JP2008016289A - Lighting control system - Google Patents

Abstract

Lighting control can be performed without moving near an operation panel for lighting, storage and management of a remote control device are unnecessary, and lighting control is performed with simple operation and gestures.
An image of a face or hand is photographed, the presence or absence of a face image, an image of a hand shape, an image of an upward or downward movement of a face or hand, or an upward or downward direction indicated by a hand Illumination that recognizes and identifies multiple types of image information, such as image information, and outputs illumination control information for illuminance setting, illuminance increase, or illuminance decrease based on the multiple types of identification results Control system.
[Selection] Figure 1

Description

  The present invention relates to an illumination control system, and more particularly, to an illumination control system that performs setting of illuminance, luminous intensity, and the like by a gesture or gesture of a setting instructor.

  Conventionally, lighting control is performed by operating switches and knobs on an operation panel installed on a wall. Also known is a method of controlling illuminance or luminous intensity with a remote control device. In the former case, the setting instructor needs to move to the operation panel in order to change the illuminance or the light intensity. In the latter case, there is no restriction on the operation position, but it is necessary to manage the remote control device and hand it to the setting instructor. In the lighting control of a facility such as a conference room used by an unspecified number of people, it is necessary to lend, collect and manage the remote control device, and there is a concern that it may be lost.

  On the other hand, various methods are known as techniques for recognizing human faces and hands.

  For example, as a technique for realizing highly accurate face image recognition, there is a method in which a face template is registered, a coordinate distribution of facial feature points is extracted from a photographed face image, and compared with the feature of the face template. (Patent Document 1 etc.)

  In addition, two types of hand shape recognition images, a hand region extraction image and a hand region thin line image, are generated from an input image by a camera or the like. From the region thin line image, the skeletal features of the hand such as the direction of the hand and the base coordinates of the finger are extracted as image features, the number of fingers is recognized, and the obtained image features and the structural features of the hand are used. The method of recognizing which finger is stretched by determining the direction of the hand, extracting the finger area, analyzing the obtained finger area extracted image and the hand shape recognition image, and obtaining image features It has been known.

There is also a technique for facilitating recognition of hand movements by extracting a skin color area, coding finger shapes, and coding movements in the left and right hand spaces. That is, the skin color region is extracted from the time series image of the hand movement photographed by the photographing device, the center of gravity of the face, the right hand, and the left hand is extracted, and the spatial positions of the left and right palms are calculated by the spatial position calculation device. A finger shape code string is created by the finger shape code creating device. A group including the recognition target hand movement is specified by the use state of the hand, static movement, and finger shape change. The motion code generator creates motion codes for the left and right hands. The start position code creating device creates a start position code for manual operation. The manual motion word matching device determines a manual motion word corresponding to the captured manual motion from the manual motion words in the identified group based on the motion code, the start position code, and the finger shape code. (Patent Document 2 etc.)
JP-A-2005-149302 (first page, FIG. 1 etc.) Japanese Unexamined Patent Publication No. 07-282235 (first page, FIG. 1 etc.)

  However, in the illumination device according to the above-described prior art, when it is desired to change the illuminance or the light intensity, the illumination setting instructor needs to move to the operation panel. In the illumination control method using the remote control device, there is no restriction on the operation position, but it is necessary to manage the remote control device and hand it to the setting instructor. Remote control devices can often be lost.

  On the other hand, although various techniques for recognizing human faces and hands are known, none have been used for lighting control. Although the above-mentioned Patent Document 1 discloses a face image recognition technique, it is an application for personal identification and is not suitable for lighting control. Patent Document 2 is a technique for recognizing a motion of a face or a hand and generating a code corresponding to the state of the motion, but does not disclose what motion is applied and how.

  If the lighting setting instructor can adjust the lighting to a desired brightness by touching the control panel without touching the operation panel or using a remote control device, for example, the lighting can be changed during a lecture. In such cases, the lecture will not be interrupted and it will be convenient, and such a lighting control system is expected.

  The present invention makes it possible for a general person to easily control lighting on the spot by gesture without using a remote control device in a lighting area such as a conference room, a hall, a general household room, and an outdoor room. An object of the present invention is to provide a lighting control system.

In order to solve the above problems, the illumination control system of the present invention employs the following means and procedures.
(1) The present invention identifies a lighting unit that captures an image of a lighting setting instructor and outputs image information, and outputs lighting control information by identifying a lighting instruction performed by the lighting setting instructor based on the image information. An illumination control system comprising image recognition means and illumination control means for controlling illuminance or light intensity based on the illumination control information.

According to the lighting control system of the present invention, it is not necessary to operate the switch on the operation panel by directing the face toward the photographing means, or by directing the face or hand toward the photographing means so as to have a predetermined shape or operation. Therefore, management of the remote control device becomes unnecessary.
(2) The present invention identifies an imaging unit that captures an image including a face or hand of a lighting setting instructor and outputs image information, and a lighting instruction to be performed by the lighting setting instructor based on the image information. The illumination control system comprises image recognition means for outputting illumination control information and illumination control means for controlling illuminance or light intensity based on the illumination control information. Identification is performed on image information of a state of two or more faces or hands.

According to the illumination control system of the present invention, the operation of the switch on the operation panel is unnecessary, and the management of the remote control device is also unnecessary.
(3) In the present invention, the image recognition means identifies the upward or downward movement of the face and outputs illumination control information for increasing or decreasing the illuminance or luminous intensity.

In this way, the illumination control of the present invention can be controlled by the movement of the face, and there is no need to store a complicated control method.
(4) In the present invention, the image recognition means identifies the number of fingers of the hand indicated by the illumination setting instructor, and outputs illumination control information for setting, increasing, or decreasing illuminance or luminous intensity.

In this way, the present invention can perform illumination control with a simple hand shape, and does not need to store a complicated control method.
(5) In the present invention, the image recognizing means identifies the upward direction or the downward direction indicated by the hand, and outputs illumination control information for setting, increasing, or decreasing the illuminance or luminous intensity.

In this way, the present invention can perform illumination control with a simple hand shape, and does not need to store a complicated control method.
(6) In the present invention, the image recognition means identifies the upward or downward movement of the hand and outputs illumination control information for setting, increasing, or decreasing the illuminance or luminous intensity.

In this way, according to the present invention, illumination control can be performed with a simple hand movement, and there is no need to store a complicated control method.
(7) In the present invention, the image recognition means identifies whether the palm is in the upward direction or the palm is in the downward direction, and performs illumination control for setting, increasing, or decreasing the illuminance or luminous intensity. Output information.

In this way, according to the present invention, illumination control can be performed in the form of a simple palm, and there is no need to store a complicated control method.
(8) In the present invention, the image recognition means identifies whether the palm is in the upward direction or the palm is in the downward direction, identifies the vertical movement of the palm, and sets the illuminance or light intensity. Lighting control information for increasing or decreasing is output.

In this way, according to the present invention, illumination control can be performed with a simple hand shape and operation, and there is no need to store a complicated control method.
(9) In the present invention, if the image pickup means is installed on the wall surface of the room, the lighting control can be performed with a simple gesture that is easy to understand intuitively without moving to the position of the switch on the operation panel. There is no need to remember the method.
(10) In the present invention, if the imaging means is installed on the ceiling of a room or in the vicinity of a light source that controls the light intensity, illuminance, or light intensity, the illumination control can be performed with a simple hand shape or gesture. This is advantageous in that it is not necessary to memorize complicated control methods, and the illuminance or light intensity at any place in the room can be set separately.

  According to the illumination control system of the present invention, it is possible to perform illumination control without moving in front of the operation panel, and it becomes unnecessary to use the remote control device, and storage and management of the remote control device become unnecessary. In addition, it is possible to perform lighting control with operations and gestures that are easy to understand intuitively.

An embodiment of a lighting control system of the present invention will be described with reference to the drawings. In addition, when the component which attached | subjected the same code | symbol performed in embodiment performs the same operation | movement, description may be abbreviate | omitted again.
(Embodiment 1)

  In the first embodiment, a description will be given of an illumination control system in which the illumination setting instructor 1 controls the brightness of illumination in three ways by changing the shape of the finger of the hand to one of 1, 2, or 3 as an illumination instruction. .

  FIG. 1 shows a configuration block diagram of a lighting control system according to Embodiment 1 of the present invention. The illumination control system includes an imaging unit 2, an image recognition unit 3, an illumination control unit 4, and a light source 5.

  The image pickup means 2 is an image pickup means, and has a function of shooting the hand of the illumination setting instruction person 1 and supplying the image information to the image recognition means 3, and is usually a CCD camera or the like.

  The image recognition means 3 is a means for recognizing an image. The image recognition means 3 receives image information taken by the image pickup means 2, extracts a hand portion described later from the image information, and has one, two, three fingers. Or the like. For example, when the image recognizing unit 3 identifies that there is one finger of the hand, it supplies the illumination control unit 4 with illumination control information that indicates an illuminance of 40% as illumination control information. For example, when the image recognizing unit 3 identifies that there are two fingers of the hand, it supplies the illumination control information indicating 70% illuminance as the illumination control information to the illumination control unit 4 that is the illumination control unit. For example, when the image recognizing unit 3 identifies that there are three fingers of the hand, it supplies the illumination control unit 4 with illumination control information indicating 100% illuminance as illumination control information. The illumination control information is information and instructions for controlling illumination, and the data structure is not limited.

  The illumination control unit 4 controls the illuminance value emitted from the light source 5 to be 40%, 70%, and 100% of the maximum value according to the received illumination control information. The illumination control information may be numerical information indicating 40%, 70%, 100% or the like, or may be code information indicating 40%, 70%, 100%, or the like, as long as the illumination control unit 4 accepts the information. Good. The illumination control means 4 can be realized by a known pulse width control circuit that controls the lighting time rate of the light source 5 such as a fluorescent lamp to 40%, 70%, 100%, or the like. One or a plurality of light sources 5 may be provided on the ceiling of the room or the like, but in a conference room or the like, a plurality of light sources 5 are usually installed. In this case, the illuminance control unit 4 is provided in the vicinity of the light source 5. Provided.

  Note that the brightness of the light source is usually expressed in terms of luminous intensity (candela). The illumination control means 4 is generally a circuit that controls the luminous intensity of the light source 5. If the luminous intensity is controlled, the illuminance (look) that is the brightness at hand is also controlled. For controlling the illuminance or light intensity of the light without controlling the light intensity of the light source, a light fixture such as a louver is provided in the lighting fixture, and the light intensity can be changed by controlling the light shield. It is done. In the present invention, the light intensity may be controlled, or the illuminance or the light intensity may be controlled to control the illumination. Therefore, in each embodiment of the present invention, illuminance may be read as luminous intensity, and vice versa.

  When the image recognition means 3 receives the hand image as shown in FIG. 2, the image recognition means 3 identifies the number of fingers of the hand image according to the flowchart shown in FIG. First, in (Step S10), image information is acquired from the imaging means 2. In (step S11), an image of a hand region is extracted from the image information. Next, in (Step S12), the outline of the hand is extracted. When extracting the contour line, the shading of the image information may be used, or the skin color portion may be extracted. Next, in (Step S13), the number of fingers is identified. To identify the number of fingers, the convex part and concave part of the contour line of the hand are extracted by changing the direction of the contour line, the shape of the contour line is converted into a polygonal shape with protrusions, and the number of protrusions Can be counted. The number of protrusions can be calculated by drawing an arbitrary line segment that bisects the polygon by the contour line on the polygon and counting the number of times of crossing the protrusion as the number of fingers. . For example, the number of crossings may be counted for each of nine directions in which the direction of the line segment is changed every 20 degrees as an example, and the maximum value may be set as the number of fingers. Further, among the protrusions, those having a small distance between the tip of the protrusion and the bottom of the recess between the protrusions may be ignored, and the number of protrusions may be counted by selecting a large protrusion. When the number of fingers as the identification result is one, Yes is obtained in (Step S14), and in (Step S15), illumination control information for setting the illuminance or luminous intensity to 40% is output to the illumination control means 4. If the number of fingers is two, the answer is Yes in (Step S16), and in (Step S17), the illumination control information for setting the illuminance or luminous intensity to 70% is output to the illumination control means 4. When the number of fingers is three, the answer is Yes in (Step S18), and in (Step S19), the illumination control information with 100% illuminance or luminous intensity is output to the illumination control means 4. If the number of fingers of the identification result is other than one, two, or three, or if the number of fingers cannot be recognized, there is no illumination control instruction, and the process ends without changing the illumination. Return to start. By repeating such a procedure, when the illumination setting instructor 1 indicates the number of fingers toward the imaging means 2, the illuminance or luminous intensity of the light source 5 is set to 40%, 70%, 100 according to the instruction based on the number of fingers. % Can be controlled. As described above, in this embodiment, a total of four types of identification are performed in addition to the three types of hand shapes.

  In the case of one finger, the lighting intensity of the light sources of all lighting fixtures is set to 30%. In the case of two fingers, the lighting intensity of the light sources of all lighting fixtures is set to 100%. In the case of four fingers, a flowchart may be adopted in which lighting control is performed so that the lighting intensity of the light sources of all the lighting fixtures is 70%. The lighting pattern at the time of presentation is a pattern in which the lighting at the position where the speaker stands is brighter than other lighting, or the vicinity of the podium is darkened for projector display.

  In the hand region image detection process (step S11), face image recognition is also performed, line of sight is further detected, and it is detected that the illumination setting instructor 1 is staring at the imaging means 2, and in that case In addition, the luminous intensity and illuminance of the illumination may be increased or decreased. The risk of accidental lighting control is reduced by the action of a person's hand that is not intended for lighting control. Various methods of face image recognition and line-of-sight detection processing are known and will not be described in detail. For eye gaze detection, as a simple method, if the position coordinates of the white and black eyes of the eye are detected for both eyes and it is determined whether the black eye is located in the center of the white eye, it is roughly It can be determined whether or not the line of sight is directed to the imaging means 2. When the line of sight is not directed to the image pickup means 2, the black-eye portion is usually at a position that is offset vertically and horizontally from the central portion of the white eye.

  According to the present embodiment, the lighting setting instructor 1 changes the shape of the hand in the vicinity of the image pickup means 2 without going to a place such as a lighting control switch, so that the desired brightness of the lighting can be obtained. It becomes possible to indicate. Moreover, the trouble of searching for a remote control is not required.

  Note that the image recognition means 3 can usually be realized by an MPU, a memory, or the like. The processing procedures such as the image processing of the image recognition means 3 and the determination of the number of fingers described in FIG. 3 are usually realized by software, and the software is recorded on a recording medium such as a ROM. However, it may be realized by a dedicated circuit using hardware. The same applies to the following embodiments.

In the present embodiment, the hand shape and the brightness of the illumination correspond to each other on a one-to-one basis. However, for example, the same hand shape (par, goo, one finger that is presented, etc.) is photographed. By turning to 2, the illumination mode (ON, OFF, sleep mode, etc.) may be switched. That is, the illumination control system identifies an imaging unit that captures an image of the hand of the illumination setting instructor to acquire image information, and an illumination instruction by the hand that the illumination setting instructor performs using the image information. The image recognition unit that acquires the illumination control information and the illumination control unit that controls the illuminance or the light intensity based on the illumination control information may be used.
(Embodiment 2)

  Next, an embodiment in which the illumination setting instructor 1 controls illumination by giving an illumination instruction based on the up and down movement of the face will be described. The configuration of the illumination control system according to the present embodiment is basically the same as that described with reference to FIG. 1, but the operation of the image recognition unit 3 is different, and different points will be described.

  The image recognition means 3 of the present embodiment extracts the face image of the lighting setting instruction person 1 as shown in FIG. 4 from the image information output from the imaging means 2, detects the eye portion, Y coordinate value which is the position of the eye in the vertical direction is calculated, and illumination control information for changing the brightness of the illumination is generated and output by moving the coordinate value Y up and down.

  The illumination setting instruction person 1 faces the image pickup means 2 and first faces the direction of the image pickup means 2, that is, the front direction, as shown in FIG. When it is desired to make the illumination brighter, the illumination setting instructor 1 turns the face as shown in (b upward) in FIG. 4 and then turns upward, and then in the front direction as shown in (c front) in FIG. Return to. Next, when it is desired to darken the illumination, the illumination setting instructor 1 turns the face downward and then returns to the front direction as shown in (d downward) in FIG. The procedure for controlling the illumination by performing such operations will be described with reference to the flowchart of FIG.

  In (step S30), the image recognition unit 3 acquires image information supplied by the imaging unit 2, and in (step S31), performs image analysis of the image information to recognize a face portion and detect an eye portion. To do. For this purpose, well-known processing can be used for face image extraction, such as edge extraction processing, comparison processing with a standard face template, and skin color extraction processing. For the detection of the eye portion, edge detection of the shape of the eye in the face, density distribution at the position of white eyes and black eyes, and the like can be used. Next, in (step S32), a coordinate value Y in the y direction (vertical direction) of the eye is calculated from the image information. It is assumed that the procedures of (Step S30), (Step S31), and (Step S32) are repeated every predetermined time, for example, every 200 ms. The calculated eye coordinate value Y is averaged in (step S33), and an average value {Y} is calculated. Averaging is performed on a new sample value of the calculated coordinate value Y of 10 samples. The number of samples may be other numbers. The averaging is performed each time a new sample value of the coordinate value Y is calculated. By averaging, it is possible to stably calculate a rough face stationary position. Next, in (step S34), it is determined whether Y> {Y} + α. In the case of Yes, it is determined that the face is turned up, and the process proceeds to (Step S35). In step S35, it is determined whether or not Y <{Y} + β. α and β are constants of α> β> 0. In (Step S35), in the case of No, it is determined that the face remains facing up, and (Step S35) is repeated. If (Yes in Step S35), it is determined that the face has returned to the front, and the process proceeds to (Step S36), where the image recognition means 3 gives the illumination control information to the illumination control means 4 the illuminance or luminous intensity increased by one step. Then, the process proceeds to (Step S37). Next, in (Step S37), it is determined whether or not Y <{Y} -α. In the case of Yes, it is determined that the face is turned downward, and the process proceeds to (Step S38). In (step S38), it is determined whether or not Y> {Y} -β. In (step S38), in the case of No, it is determined that the face remains facing down, and (step S38) is repeated. If (Yes in Step S38), it is determined that the face has returned to the front, and the process proceeds to (Step S39), where the image recognition means 3 provides the illumination control information with the illumination control information obtained by reducing the illuminance or luminous intensity by one step. Then, the series of processes is terminated, and the process returns to (Step S30). Note that when the illumination setting instruction person 1 finishes the illumination control instruction and moves from the front of the imaging unit 2 and the face portion is not included in the image information, the coordinate value Y is not calculated. As described above, when the face is not detected in (Step S31) and the coordinate value Y is not calculated in (Step S32), it is determined as No in (Step S34) and (Step S37). When the illumination setting instructor 1 finishes the illumination control instruction and moves from the front of the imaging unit 2, the illumination is maintained without change. One stage of illumination control may be a constant value of change such as ± 20% of luminous intensity or illuminance, or a certain amount of change of candela or looks. For example, the maximum value is ± 5%, ± 10% ± 20%, or the like. Therefore, the illumination control information may be information obtained by adding these change values to the current value. Note that it is possible to reliably capture the change in Y by comparing the magnitude of the change in Y of the current value with reference to the average value {Y}.

  FIG. 4 shows changes in the coordinate value Y of the eye and the average value {Y} when the face direction is changed in order of (a) front, (b) upward, (c) front, (d) downward. Examples of determination threshold values {Y} + α, {Y} + β, {Y} −α, and {Y} −β are shown. In the flowchart of FIG. 5, since the average value is not calculated while the face is facing upward and downward, the average value {Y} during that time does not change significantly, and the eye when facing the front for the first time. The average value {Y} of the coordinate values Y is substantially maintained. In the present embodiment, each time the face is changed upward or downward once, the light is increased or decreased by one level. As described above, the present embodiment recognizes and identifies the movement of the face in the vertical direction, and controls the increase / decrease of the illumination according to the identification result. Two types of face movement and no face movement are performed. A total of three types of identification are performed.

In the eye part extraction process (step S31), the line of sight is also detected, and it is detected that the illumination setting instructor 1 is staring at the image pickup means 2, and in that case, the intensity of illumination and the increase or decrease in illuminance are detected. May be performed. Due to the movement of the face of a person who does not intend to control lighting, the risk of erroneous lighting control is reduced.
(Embodiment 3)

  In the second embodiment, it is necessary to move the face up and down many times for lighting control. However, in this embodiment, the lighting instruction is given by the length of time the face is turned up and down, and the lighting is performed. Let control.

  The configuration of the illumination control system according to the present embodiment is the same as that in FIG. 1, but the operation of the image recognition means 3 is different. The image recognition means 3 performs an operation as shown in the flowchart of FIG.

  In the flowchart of FIG. 6, (Step S50), (Step S51), (Step S52), and (Step S53) are (Step S30), (Step S31), (Step S32), and (Step S33) of FIG. It is the same. In addition, the procedures of (Step S50), (Step S51), and (Step S52) are repeatedly performed every predetermined time, for example, every 200 ms. Next, in (Step S54), it is determined whether Y> {Y} + α. In the case of Yes, it is determined that the face is turned up, and the process proceeds to (Step S55). In (Step S55), the image recognition unit 3 supplies the illumination control information with slightly increased illuminance or luminous intensity to the illumination control unit 4. Next, the process proceeds to (step S56), and it is determined whether or not Y <{Y} + β. α and β are constants of α> β> 0. In (Step S56), in the case of No, it is determined that the face remains facing up, and (Step S55) is repeated. If (Yes in Step S56), it is determined that the face has returned to the front, and the process proceeds to (Step S57). Next, in (Step S77), it is determined whether or not Y <{Y} -α. In the case of Yes, it is determined that the face is turned down, and the process proceeds to (Step S58). In (Step S58), the image recognition unit 3 supplies the illumination control unit 4 with the illumination control information in which the illuminance or the light intensity is slightly reduced. Next, the process proceeds to (step S59), and it is determined whether or not Y> {Y} -β. In (Step S59), in the case of No, it is determined that the face remains facing down, and (Step S58) is repeated. If the result is Yes in (Step S59), it is determined that the face has returned to the front, the series of processing ends, and the process returns to (Step S50). Note that when the illumination setting instruction person 1 finishes the illumination control instruction and moves from the front of the imaging unit 2 and the face portion is not included in the image information, the coordinate value Y is not calculated. As described above, when the face is not detected in (Step S51) and the coordinate value Y is not calculated in (Step S52), it is determined as No in (Step S54) and (Step S57). When the illumination setting instructor 1 finishes the illumination control instruction and moves from the front of the imaging unit 2, the illumination is maintained without change. The increase or decrease of the illumination control information in (Step S55) and (Step S58) is a relatively small value such as ± 5% of luminosity or illuminance, or a certain amount of change in candela or looks. And it is sufficient. It may be a value such as ± 5% or ± 10% of the maximum value of luminosity or illuminance. Therefore, the illumination control information may be information obtained by adding these change values to the current value.

  In this embodiment, in FIG. 4, the illumination gradually increases while the face is facing upward, and the illumination gradually decreases while the face is facing downward. Just turn your face to the front. If the step of increasing / decreasing illumination control information in (Step S55) and (Step S58) is set to a small value, the luminous intensity and illuminance change slowly. Similarly, even if the processing speed of the loop in (Step S55) and (Step S56) is decreased, the luminous intensity and illuminance change slowly. As described above, the present embodiment recognizes and identifies the vertical direction of the face, and controls the increase / decrease of illumination based on the identification result. There are two kinds of face shapes and the other three kinds in total. It will be made to identify.

  In the eye part extraction process (step S51), the line of sight is also detected, and it is detected that the illumination setting instructor 1 is staring at the image pickup means 2, and in that case, the illumination intensity and illuminance increase / decrease May be performed. Due to the movement of the face of a person who does not intend to control lighting, the risk of erroneous lighting control is reduced.

In the second and third embodiments, the position of the eye in the face is detected, and an instruction to increase or decrease illumination intensity or illuminance is given by upward or downward movement from the average position. In addition to the position of the eyes, the position of the nose or mouth may be detected, and an instruction to increase or decrease the intensity of illumination or the illuminance may be issued by moving the position up and down. Also, for recognition processing of the face position, use skin color recognition or calculate the center of gravity of the face part to detect the vertical movement of the center of gravity position and give instructions to increase or decrease the intensity of illumination and illuminance May be. The technique of Patent Document 2 may be applied to skin color recognition and face center-of-gravity position recognition and calculation methods.
(Embodiment 4)

  Next, an embodiment in which illumination control is performed by giving an illumination instruction in the form of a hand instead of a face will be described. In this embodiment, as shown in FIG. 7 (A), when the index finger of the hand is directed upward, the light intensity is controlled, and as shown in FIG. 7 (B), when the index finger of the hand is directed downward. Controls dimming.

  The configuration of the illumination control system according to the present embodiment is the same as that in FIG. 1, but the operation of the image recognition means 3 is different. The image recognition means 3 performs an operation as shown in the flowchart of FIG.

  In the flowchart of FIG. 7, the image recognizing unit 3 performs (Step S10), (Step S11), and (Step S12) described in Embodiment 1 in (Step S70), (Step S71), and (Step S72), respectively. ) The same processing procedure is executed. Next (Step S73), the image recognition means 3 performs a recognition process of the shape of the hand with the index finger extended and a detection process of whether the index finger of the hand is upward or downward. It should be noted that the procedures of (Step S70), (Step S71), (Step S72), and (Step S73) are repeatedly performed every predetermined time, for example, every 200 ms.

  Next, in (Step S74), it is determined whether or not the detection result of the index finger direction is upward. If the result is Yes, it is determined that an instruction to increase light intensity is given, and the process proceeds to (Step S75). In (step S75), the image recognition means 3 supplies the illumination control information with slightly increased illuminance or luminous intensity to the illumination control means 4, and returns to (step S74). In the case of No in (Step S74), the process proceeds to (Step S76), and it is determined whether or not the detection result of the index finger direction is downward. If Yes, it is determined that a dimming instruction has been issued, and the process proceeds to (Step S77). In (Step S77), the image recognizing unit 3 supplies the illumination control information in which the illuminance or the light intensity is slightly reduced to the illumination control unit 4, and returns to (Step S76). When the hand portion is not detected from the image information, or when the index finger of the hand is neither upward nor downward, the result is No in (Step S74) and (Step S76), and neither light increase nor light reduction is performed. In the case of No in (Step S76), the series of processing ends, and the process returns to (Step S70). The increase or decrease of the illumination control information in (Step S75) and (Step S77) is a change in a relatively small value such as ± 5% of luminous intensity or illuminance, or a certain amount of change in candela or looks. The minute value may be increased or decreased. Further, it may be a value such as ± 5% or ± 10% of the maximum value of luminous intensity or illuminance. Therefore, the illumination control information may be information obtained by adding these change values to the current value.

  In the present embodiment, the illumination is gradually brightened while the index finger is pointing upward, and the illumination is gradually darkened while the index finger is pointing downward. When the desired brightness is obtained, the illumination setting instructor 1 moves his / her hand out of the field of view of the imaging means 2 or forms a hand that does not extend the index finger.

  Note that the finger region image extraction process (step S71), the contour line extraction process (step S72), and the recognition process of the hand shape with the index finger extended (step S73) include the finger described in the first embodiment. The number of identification methods can be used. Also, prepare an upward template and a downward template for the hand with the index finger extended, calculate the similarity between the extracted hand / finger contour data and the two templates, and which template is similar. If it is determined whether it is, the direction of the finger of the hand, that is, the determination and detection of the upward and downward of the index finger can be performed. If the degree of similarity is small, it can be determined that the index finger is not stretched out and is neither upward nor downward. When the image pickup means 2 supplies image information other than the hand to the image recognition means 3, it is not possible to extract the contour line of the hand or finger, but in this case as well, it is determined that it is neither upward nor downward. No in (Step S74) and (Step S76), neither light increase nor light reduction is performed.

  A finger shape other than the index finger may be applied. The luminous intensity and illuminance may be increased or decreased depending on whether the direction indicated by the entire hand is upward or downward. As described above, this embodiment recognizes and identifies whether the hand is upward or downward, and controls the increase / decrease of illumination based on the identification result. In other words, a total of three types of identification are performed.

Further, in the hand region image extraction process (step S71), the face region is extracted and the line of sight is also detected, and it is detected that the illumination setting instructor 1 is staring at the imaging means 2, and in that case, the illumination The intensity and illuminance of the light may be increased or decreased. The risk of accidental lighting control is reduced by the action of a person's hand that is not intended for lighting control.
(Embodiment 5)

  Next, an embodiment in which illumination control is performed in accordance with an illumination instruction by a vertical movement of the hand will be described. In this embodiment, as shown in FIG. 9 (A), the brightening is controlled by moving the palm up and down to move the palm up and down as shown in FIG. 9 (B). The dimming is controlled by the movement of. The orientation of the hand can be realized either horizontally as shown in FIG. 9 or front as shown in FIG.

  The configuration of the illumination control system according to the present embodiment is the same as that in FIG. 1, but the operation of the image recognition means 3 is different. The image recognition means 3 performs an operation as shown in the flowchart of FIG.

  In the flowchart of FIG. 10, the image recognizing unit 3 performs (Step S10), (Step S11), and (Step S12) described in Embodiment 1 in (Step S90), (Step S91), and (Step S92), respectively. ) The same processing procedure is executed. Next (step S93), the image recognition means 3 performs a hand shape recognition process, a detection process of whether the palm direction is upward or downward, and a detection process of the vertical movement of the palm. It should be noted that the procedures of (Step S90), (Step S91), (Step S92), and (Step S93) are repeatedly performed every predetermined time, for example, every 200 ms.

  Next, in (Step S94), it is determined whether or not the palm is upward and accompanied by vertical movement. If Yes, it is determined that an instruction to increase light intensity is given, and the process proceeds to (Step S95). In (Step S95), the image recognition means 3 supplies the illumination control information with slightly increased illuminance or luminous intensity to the illumination control means 4, and returns to (Step S94). In the case of No in (Step S94), the process proceeds to (Step S96), and it is determined whether or not the palm is downward and accompanied by vertical movement. If Yes, it is determined that a dimming instruction has been issued, and the process proceeds to (Step S97). In (Step S97), the image recognition means 3 supplies the illumination control information with slightly reduced illuminance or luminous intensity to the illumination control means 4, and returns to (Step S96). When the hand portion is not detected from the image information, or when the palm is neither upward nor downward, or when the palm does not move up and down, the result is No in (Step S94) and (Step S96), and the light intensity is also reduced. Also not done. In the case of No in (Step S96), the series of processing ends, and the process returns to (Step S90). The increase and decrease of the illumination control information in (Step S95) and (Step S97) are as described in the fourth embodiment.

  In the present embodiment, the illumination is gradually brightened while the palm is moved up and down, and the illumination is gradually darkened while the palm is moved up and down. When the desired brightness is reached, the illumination setting instructioner 1 moves the hand out of the field of view of the imaging means 2, stops the vertical movement, or changes the shape so that the palm does not point up or down (step). No in S94) and (Step S96), and then the desired illumination is maintained.

  The technique of Patent Document 2 is used for the hand region image extraction process (step S91), the contour line extraction process (step S92), and the hand shape recognition process (step S93) with the palm facing up and down. Is available. Also, prepare an upward template of the palm shape and a downward template of the palm shape, calculate the similarity between the extracted hand / finger contour data and the two templates, and which template is more similar. The direction of the palm can be detected. If the degree of similarity is small, it can be determined that the palm is neither upward nor downward. When the image pickup means 2 supplies image information other than the hand to the image recognition means 3, it is not possible to extract the outline of the hand, but in this case as well, it is determined that the palm is neither upward nor downward. No in (Step S94) and (Step S96), neither light increase nor light reduction is performed. In addition, the detection method of the vertical movement of the face in the above embodiment can be used for detecting the vertical movement of the palm in (Step S93). As described above, the present embodiment recognizes and identifies the movement in the vertical direction of the hand, and controls the increase / decrease in lighting based on the identification result. Three types of identification are performed.

In the hand region image extraction process (step S91), the face region is extracted and the line of sight is detected, and it is detected that the illumination setting instructor 1 is staring at the image pickup means 2, and in that case, the illumination The intensity and illuminance of the light may be increased or decreased. The risk of accidental lighting control is reduced by the action of a person's hand that is not intended for lighting control.
(Embodiment 6)

  Next, an embodiment in which illumination control is performed by an illumination instruction in the vertical direction of the palm will be described. In this embodiment mode, as shown in FIG. 11A, the light control is performed when the palm is turned up, and the light control is performed when the palm is turned down as shown in FIG. 11B. .

  The configuration of the illumination control system according to the present embodiment is the same as that in FIG. 1, but the operation of the image recognition means 3 is different. The image recognition unit 3 performs an operation in which a part of the flowchart shown in FIG. 10 is changed.

  In the flowchart of FIG. 10 (step S93), the image recognition unit 3 performs a hand shape recognition process and a detection process of whether the palm direction is upward or downward. It should be noted that the procedures of (Step S90), (Step S91), (Step S92), and (Step S93) are repeatedly performed every predetermined time, for example, every 200 ms.

  Next, in (Step S94), it is determined whether or not the palm is upward. If it is upward, that is, Yes, it is determined that a light-intensification instruction has been issued, and the process proceeds to (Step S95). In (Step S95), the image recognition means 3 supplies the illumination control information with slightly increased illuminance or luminous intensity to the illumination control means 4, and returns to (Step S94). In the case of No in (Step S94), the process proceeds to (Step S96) and it is determined whether or not the palm is downward. If it is downward, that is, Yes, it is determined that dimming is instructed, and the process proceeds to (Step S97). In (Step S97), the image recognition means 3 supplies the illumination control information with slightly reduced illuminance or luminous intensity to the illumination control means 4, and returns to (Step S96). When the hand portion is not detected from the image information or when the palm is neither upward nor downward, the answer is No in (Step S94) and (Step S96), and neither light increase nor light reduction is performed. In the case of No in (Step S96), the series of processing ends, and the process returns to (Step S90). The increase and decrease of the illumination control information in (Step S95) and (Step S97) are as described in the fourth embodiment.

  In the present embodiment, the illumination is gradually brightened while the palm is facing upward, and the illumination is gradually darkened while the palm is facing downward. When the desired brightness is obtained, the illumination setting instructor 1 moves the hand out of the field of view of the imaging means 2 or makes the palm so that the palm does not face up and down (step S94) and (step S96). No) and the desired illumination is then maintained.

  The hand region image extraction process (step S91), the contour line extraction process (step S92), and the hand shape recognition process (step S93) with the palm facing up and down will be described in the above embodiment. And the technology of Patent Document 2 can be used. Also, prepare an upward template of the palm shape and a downward template of the palm shape, calculate the similarity between the extracted hand / finger contour data and the two templates, and which template is more similar. The direction of the palm can be detected. If the degree of similarity is small, it can be determined that the palm is neither upward nor downward. When the image pickup means 2 supplies image information other than the hand to the image recognition means 3, it is not possible to extract the outline of the hand, but in this case as well, it is determined that the palm is neither upward nor downward. No in (Step S94) and (Step S96), neither light increase nor light reduction is performed. As described above, the present embodiment recognizes and identifies whether the palm is upward or downward, and controls the increase / decrease of illumination according to the identification result. A total of three types of identification are performed.

In the hand region image extraction process (step S91), the face region is extracted and the line of sight is detected, and it is detected that the illumination setting instructor 1 is staring at the image pickup means 2, and in that case, the illumination The intensity and illuminance of the light may be increased or decreased. The risk of accidental lighting control is reduced by the action of a person's hand that is not intended for lighting control.
(Embodiment 7)

  In each of the above-described embodiments, the illumination control system in the case of increasing or decreasing the illumination illuminance or luminous intensity has been described. However, in the illumination control system of the present invention, the illumination state is turned on or off to turn on / off. You may make it perform control which switches.

  The configuration of the illumination control system according to the present embodiment is the same as that in FIG. 1, but the operation of the image recognition means 3 is different. The image recognition means 3 performs an operation as shown in the flowchart of FIG.

  In step S110, the image recognition unit 3 resets a timer provided therein. Next, in (step S111), the image information supplied by the imaging means 2 is acquired, and then in step (S112), a face portion detection process is performed. Next, in (step S113), a line-of-sight detection process is performed from the face portion. Next, proceeding to (Step S114), a face is detected, a line of sight is detected, and it is determined whether the line of sight faces the imaging means 2. When the line of sight does not face the image pickup means 2, the answer is No and the process returns to (Step S110). If it is determined that the line of sight is facing the imaging unit 2, the determination is Yes and the process proceeds to (Step S115). In (step S115), the timer is counted up by one. Next, in (step S116), it is determined whether the timer has counted 5 seconds. If No, the process returns to (Step S111). If the face and line of sight continue to face the imaging means 2 for 5 seconds or more, the result is Yes in (Step S116), and the process proceeds to (Step S117). In (step S117), the illumination is reversed from ON to OFF or from OFF to ON. In other words, the image recognition unit 3 outputs the illumination control information to the illuminance control unit 4 by inverting the illumination control information from ON to OFF or from OFF to ON.

  Next, the image recognition unit 3 proceeds to (Step S118), acquires image information supplied by the imaging unit 2, and then performs a face part detection process in (Step S119), and in (Step S120). The line of sight is detected from the face portion. Next, the process proceeds to (Step S121). When a face is detected, a line of sight is detected, and it is determined that the line of sight is facing the imaging unit 2, No is returned, and the process returns to (Step S118). If it is determined in (Step S121) that no face is detected, no line of sight is detected, and the line of sight is not facing the image pickup means 2, the series of processing ends and the process returns to the first (Step S110). The process is repeated. The processing procedure from (Step S118) to (Step S121) is the processing time from when the illumination is turned on and off to (Step S110) to (Step S117) unintentionally when the face is kept facing the imaging means 2. It is prevented from being repeated with a period of about 5 seconds. The value for 5 seconds may be another value.

  As the timer, a timer built in a one-chip microcomputer or the like can be used. Timers can also be created by software.

In addition to performing illumination ON / OFF control according to an illumination instruction by directing the face toward the imaging unit 2 or in another direction as described above, for example, the image recognition unit 3 crosses both hands and arms. For example, all the lights may be turned off when the gesture of the X mark is recognized and identified, and all the lights may be turned on when the gesture of the circle is recognized and identified with both hands. In the case of such a method, in addition to the control of lighting enhancement, reduction, and maintenance of the current status described in each of the above embodiments, the lighting setting instructor 1 gestures and the shape of the hand. The control indicated by can be combined. Recognition and identification of such gesture images can also be realized based on known image processing and image recognition techniques.
(Embodiment 8)

  Next, the installation form of the illumination control system of the present invention will be described.

FIG. 13 shows an example in which the imaging means 2 is installed on a wall surface such as a classroom. The image recognition means 3 may be arranged near the imaging means 2 or on the ceiling. The illumination control means 4 is usually installed inside a lighting fixture including the light source 5, but this is not the case when a plurality of lighting fixtures are controlled collectively. The camera of the imaging means 2 has an autofocus function and a zoom function so that the hand and face of the lighting setting instructor 1 can be photographed in focus, and the hand and face appear sufficiently large on the camera screen. You may do it. Further, the direction of the camera may be controlled according to the shooting condition of the subject, and the hand or face may be shown in the center of the camera screen.
(Embodiment 9)

  Next, another example of the installation form of the illumination control system of the present invention will be described.

  FIG. 14 shows an example in which the imaging means 2 is installed between ceiling lighting fixtures. The imaging means 21 is installed facing downward at a position between the ceiling lighting fixtures L11, L12, L21, and L22. The first image information acquired by the imaging unit 21 is supplied to a first image recognition unit 31 (not shown), and the first image recognition unit 31 transmits lighting control information to the lighting fixtures L11, L12, L21, and L22. The light is supplied to four illumination control means 41 (not shown) provided inside. The imaging means 22 is installed facing downward at a position between the ceiling lighting fixtures L31, L32, L41, and L42. The second image information acquired by the imaging means 22 is supplied to a second image recognition means 32 (not shown), and the second image recognition means 32 sends the illumination control information to the lighting fixtures L31, L32, L41, L42. The light is supplied to four illumination control means 42 (not shown) provided inside. The imaging means 23 is installed facing down at a position between the ceiling lighting fixtures L51, L52, L61, and L62. The third image information acquired by the imaging unit 23 is supplied to a third image recognition unit 33 (not shown), and the third image recognition unit 33 transmits the illumination control information to the lighting fixtures L51, L52, L61, and L62. The light is supplied to four illumination control means 43 (not shown) provided inside.

  When the lighting setting instructor 1 performs the operation described in each of the above embodiments at a position below the imaging unit 21, the image recognition unit 31 performs recognition processing of the image and operation, and It detects the number of fingers, the up and down movement of the face, the direction of the fingers of the hand, the direction and movement of the palm, and outputs lighting control information. The same applies to the imaging means 22 and the image recognition means 32, and the imaging means 23 and the image recognition means 33.

  It is preferable that the imaging areas of the imaging means 21, 22, and 23 do not overlap so much.

  In this embodiment, the y direction is not uniquely determined. When using the vertical movement of the face as in the second and third embodiments, the left and right eyes are detected in the eye part detection processing (step S31) and (step S51), and the center position is determined. The vertical direction with respect to the connecting straight line is set as the y direction, and the mouth portion is further detected. In (Step S32) and (Step S52), the opposite direction of the mouth side is set as the positive direction of y. It is preferable to calculate {Y}.

  Further, in the case where the illumination intensity or illuminance is increased / decreased in the vertical direction of the index finger or the palm as in the fourth embodiment, the fifth embodiment, and the sixth embodiment, the illumination setting is performed in (step S70) and (step S90). An image portion of the face of the instructor 1 is also captured and acquired. In (Step S71) and (Step S91), the vertical direction of the face is also recognized, and the upward direction of the face is recognized as the positive direction of y. In (S73) and (Step S93), it is preferable to recognize and judge the direction of the finger, the direction of the palm, and the vertical movement. Needless to say, the direction of the finger, the direction of the palm, and the vertical movement are the direction and the vertical movement in the posture toward the imaging unit 2.

  In addition, when performing face image recognition in the present embodiment, the line of sight is detected at the time of eye part extraction, and it is detected that the illumination setting instructor 1 is staring at the imaging means 2, and in that case, You may make it perform increase / decrease in the luminous intensity and illumination intensity of illumination. There is less risk of accidental lighting control due to the movement of the face or hand of a person who does not intend lighting control.

  According to the present embodiment, when a lecturer wants to display a video image or the like with a projector in a presentation such as a lecture, the lecture program can be smoothly advanced without interruption. The lighting close to the podium and projector can be selectively darkened according to the intention of the speaker.

  (Other embodiments and supplements)

  In each of the above-described embodiments, the camera of the imaging means 2 has an autofocus function and a zoom function so that the hand and face of the illumination setting instructor 1 can be photographed in a focused state, and the camera screen has a hand. Or the face may appear large enough. Further, the direction of the camera may be controlled according to the shooting condition of the subject, and the hand or face may be shown in the center of the camera screen.

  The image pickup means 2 may have a function of a normal CCD camera. In addition, if an infrared camera is used, the gesture of the illumination setting instructor 1 can be reliably photographed even in a dark room, so that illumination control can be performed from a dark state to make it bright. Weak illumination with infrared rays that cannot be seen by human eyes may be performed. Alternatively, a human face or hand may be reliably photographed using a camera using a pyroelectric sensor. The face and hand may be photographed by thermography, and the face and hand may be recognized from the image. Also, if a small light source for illumination is provided in the image pickup means 2 to illuminate the illumination setting instructor 1, it is possible to instruct illumination control even when the light source 5 is not lit at all. Become. In this case, a light source that is not so bright is sufficient as the small light source. This small light source is also useful for notifying the illumination setting instruction person 1 where the imaging means 2 is.

  Instead of detecting the line of sight in the above description, it may be determined whether the face is facing the imaging means 2 or not. For this purpose, it is determined whether the position of the eye or nose in the face region is the center part in the vertical and horizontal directions, the lower part, the upper part, the left or the right part. It may be identified as being suitable. Further, when extracting the face, the hair portion is also extracted, and depending on the ratio of the area of the face to the area of the hair portion, whether the face is facing the imaging means 2 or above or below the imaging means 2 A determination may be made.

  In each of the above embodiments, the image recognition unit 3 can be usually realized by an MPU, a memory, or the like. 3, 5, 6, 8, 10, and 12, image processing of the image recognition means 3, determination of the number of fingers, recognition of face movement, hand shape, movement, identification processing procedure, increase / decrease in illuminance and luminous intensity Since a series of procedures, such as output processing of lighting control information for, is usually realized by software, the software may be recorded on a recording medium such as a ROM. However, it may be realized by a dedicated circuit using hardware.

  In the description of each of the above embodiments of the present invention, the example in which the illumination is controlled by the shape of the hand, the vertical movement of the face or hand, the vertical direction of the hand, etc. has been described. Such an embodiment is easy to understand for any person and seems to require no training, but if there are countries or regions where the meaning of vertical movement and vertical direction is different, movement in the left and right direction, The left and right directions may correspond to an instruction to increase or decrease illumination. Further, shapes, directions, and movements other than these hand and face shapes, directions, and movements may be applied as recognition and identification targets of the image recognition means 3. In the present invention, the image recognition means 3 recognizes and identifies multiple types of shapes, directions, and movements, such as above and below the body part, right and left, and increases / decreases illumination, and controls control of multiple illumination states. There is a feature in the point to do. Furthermore, in addition to two types, such as above and below the body part, right and left, and other states, a total of three or more types can be identified and assigned to increase or decrease lighting and maintain the current status. There are features.

  According to the present invention, when a lecturer wants to display a video image or the like on a projector in a presentation such as a lecture, the lecture program can be smoothly advanced without interruption.

  The image pickup means 2 of the lighting control system is generally installed on the wall or ceiling of a conference room or hall. However, the camera unit of a mobile phone with a camera is configured as the image pickup means 2 to wirelessly communicate image information. You may make it transmit to the image recognition means 3 by a system. A program of the processing procedure of the image recognition unit 3 may be stored in a memory inside the mobile phone, and the illumination control information may be transmitted to the illumination control unit 4 by a wireless communication method.

  When entering the room, the program of the processing procedure of the image recognition means 3 is downloaded to the mobile phone, and the lighting control by the above-described operation is performed by performing the face and hand motion in front of the camera of the mobile phone. May be performed.

  In the above-described embodiment, it is preferable that the photographing unit exists in the vicinity of the light source. When the room is dark, the user wants to be bright and performs an operation of turning his face to the light source. Then, the illuminance or light intensity is controlled by the image recognition means and the illumination control means, and the brightness desired by the user is obtained. Similarly, when the user wants to darken the room, the user performs an operation of turning his face to the light source. Then, the illuminance or light intensity is controlled by the image recognition means and the illumination control means, and the room can be darkened.

  The present invention is not limited to the above-described embodiments, and various modifications are possible, and it goes without saying that these are also included in the scope of the present invention.

  The illumination control system according to the present invention is useful as an illumination control system for buildings inside, outside, halls, and various facilities.

The block diagram of one Embodiment of the lighting control system of this invention The figure of an example of the method of the instruction | indication used for the illumination control system of this invention The flowchart of the control procedure of the illumination control system of this invention The figure of the example of operation | movement of the image recognition means of the illumination control system of this invention The flowchart of the control procedure of the illumination control system of this invention The flowchart of the control procedure of the illumination control system of this invention The figure of the other example of the method of the instruction | indication used for the illumination control system of this invention The flowchart of the control procedure of the illumination control system of this invention The figure of the other example of the method of the instruction | indication used for the illumination control system of this invention The flowchart of the control procedure of the illumination control system of this invention The figure of the other example of the method of the instruction | indication used for the illumination control system of this invention The flowchart of the control procedure of the illumination control system of this invention The figure of the installation form of the illumination control system of this invention The figure of the other installation form of the illumination control system of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Illumination setting instruction person 2 Imaging means 3 Image recognition means 4 Illumination control means 5 Light source

Claims (12)

A photographing means for photographing an image of a lighting setting instructor and acquiring image information;
An image recognition means for identifying a lighting instruction given by the lighting setting instructor using the image information and acquiring lighting control information;
Illumination control means for controlling illuminance or luminous intensity based on the illumination control information;
A lighting control system comprising: A photographing unit that captures an image including a face of a lighting setting instructor or a hand to acquire image information;
Image recognition means for identifying lighting instructions by the face or hand performed by the lighting setting instructor using the image information and obtaining lighting control information;
Illumination control means for controlling illuminance or luminous intensity based on the illumination control information;
A lighting control system comprising: The image recognition means includes
Recognize and identify multiple types of image information, either hand-shaped images, images of upward or downward movement of the face or hand, or upward and downward image information pointed to by the hand, The illumination control system according to claim 2, wherein illumination control information for setting, increasing, or decreasing illuminance or luminous intensity is acquired based on the plurality of types of identification results. The image recognition means includes
The illumination control system according to claim 2, wherein an upward or downward movement of a face is identified, and illumination control information for setting, increasing, or decreasing illuminance or luminous intensity is acquired based on the identification result. The photographing means includes
Take a picture of the hand of the lighting setting instructor to get image information,
The image recognition means includes
The illumination control system according to claim 2, wherein the number of fingers of the hand indicated by the illumination setting instructor is identified, and illumination control information for setting, increasing, or decreasing illuminance or intensity is acquired based on the identification result. The photographing means includes
Take a picture of the hand of the lighting setting instructor to get image information,
The image recognition means includes
The illumination control system according to claim 2, wherein the illumination control system is configured to identify an upward direction or a downward direction indicated by a hand, and to acquire illumination control information for setting, increasing, or decreasing illuminance or luminous intensity based on the identification result. The photographing means includes
Take a picture of the hand of the lighting setting instructor to get image information,
The image recognition means includes
The illumination control system according to claim 2, wherein an upward or downward movement of a hand is identified, and illumination control information for setting, increasing, or decreasing illuminance or luminous intensity is acquired based on the identification result. The photographing means includes
Take a picture of the hand of the lighting setting instructor to get image information,
The image recognition means includes
3. The lighting control information for identifying whether the palm is in the upward direction or the palm is in the downward direction, and obtaining illumination control information for setting, increasing, or decreasing the illuminance or the luminous intensity based on the identification result. Lighting control system. The photographing means includes
Take a picture of the hand of the lighting setting instructor to get image information,
The image recognition means includes
Identifies whether the palm is in the upward direction or the palm is in the downward direction, identifies the vertical movement of the palm, and sets, increases, or decreases the illuminance or light intensity based on the identification result The illumination control system according to claim 2, wherein the illumination control information to be acquired is acquired. The photographing means includes
Take a picture of the face of the lighting setting instructor to obtain image information,
The image recognition means includes
The illumination according to claim 2, wherein the illumination control information for switching ON / OFF of the light source is acquired when it is determined that the direction of the face or the line of sight is identified and the direction of the face or the line of sight is directed to the imaging unit for a predetermined time. Control system. The illumination control system according to claim 1, wherein the imaging unit is installed on a wall surface of a room. The illumination control system according to any one of claims 1 to 10, wherein the illumination control unit is installed on the ceiling of a room or in the vicinity of the light source that controls illuminance or light intensity.

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