JP5245947B2 - Imaging apparatus, imaging method, program, and recording medium - Google Patents

Description

  The present invention relates to an imaging apparatus that performs exposure adjustment, an imaging method, a program, and a recording medium.

  In recent years, digital cameras and the like that detect backlight conditions and perform exposure correction have become widespread. In such a digital camera, the backlight distribution state is determined by detecting the brightness distribution state within one angle of view or the brightness difference between the central part and the peripheral part from the brightness histogram, and the backlight scene is set according to the determination result. Optimal exposure compensation is performed.

  For example, a technique for performing exposure control adapted to backlight or excessively forward light based on the brightness of the angle of view is disclosed (for example, Patent Document 1). In the technique disclosed in Patent Document 1, first, the luminance level obtained from a predetermined block is set as a predetermined reference level, and it is determined whether or not the average luminance value of each block is within the range of the predetermined reference level. Next, the luminance in an area composed of predetermined blocks is calculated as the representative luminance according to the distance between the subjects and the relationship between the subjects, and the ratio of blocks satisfying the threshold value in the area is obtained. Then, the exposure control amount is determined based on the correction amount generated from the ratio of the blocks that satisfy the threshold condition, and exposure control is performed.

  In the technique of the above-mentioned patent document 1, when performing exposure control, the background is compared with the brightness (for example, the brightness level) of the subject to be photographed from the brightness distribution of the subject within the angle of view or the histogram distribution. A bright state (for example, high brightness) is determined as a backlight state. When it is determined that the backlight is in the backlit state, correction is performed for preset standard image sensor sensitivity, aperture value, and shutter speed settings. However, the technique disclosed in Patent Document 1 has a problem in that it may be erroneously determined to be a backlight state even when it is not backlit due to the state of the luminance distribution of the captured image. Furthermore, as a result of the above misjudgment, there are many cases where overexposure occurs, or even though the backlight is in the backlit state, the normal shooting state is often overexposed, and the backlight scene cannot be accurately determined. was there.

  The present invention has been made in view of such circumstances, an imaging apparatus and an imaging apparatus that can solve the above-mentioned problems, improve the accuracy of backlight state determination, and always perform optimum exposure correction according to the shooting state. An object is to provide a method, a program, and a recording medium.

  An image pickup apparatus according to the present invention includes an infrared detection unit that detects infrared rays, an inclination detection unit that detects an inclination of the image pickup device, an image processing unit that performs image processing on image data output from the image pickup device, and photographing by the image pickup device. Sunlight presence / absence determination means for determining whether or not sunlight is included in the angle of view, the infrared detection means outputs an electrical signal based on detection of infrared rays, and the image processing means Luminance information is output, and the sunlight presence / absence determination means includes an electrical signal output by the infrared detection stage, an inclination of the imaging device detected by the inclination detection means, and luminance information of the image data output by the image processing means. Based on the above, it is determined whether or not sunlight is included in the shooting angle of view.

  The imaging method of the present invention includes an infrared detection step for detecting infrared rays and outputting an electrical signal based on the detection of infrared rays, an inclination detection step for detecting an inclination of the imaging device, and image data output from the imaging device. An image processing step for performing processing and outputting luminance information of the image data, and a sunlight presence / absence determining step for determining whether or not sunlight is included in a shooting angle of view by the imaging device. The step is based on the electrical signal output by the infrared detection step, the tilt of the imaging device detected by the tilt detection step, and the luminance information of the image data output by the image processing step. It is characterized by determining whether sunlight is contained.

  The program of the present invention detects an infrared ray, outputs an electric signal based on the detection of the infrared ray, detects an inclination of the imaging device, performs image processing on the image data output from the imaging device, and outputs an image. Whether or not sunlight is included in the shooting angle of view by the imaging device is determined based on the process of outputting the luminance information of the data, the electrical signal, the tilt of the imaging device, and the luminance information of the image data. And causing the computer to execute the processing.

  The recording medium of the present invention is a computer-readable recording medium on which the program is recorded.

  According to the present invention, it is possible to improve the accuracy of backlight state determination.

It is a block diagram which shows the example of schematic structure of the imaging device which concerns on this embodiment. It is a block diagram which shows the example of schematic structure of the imaging device which concerns on this embodiment. It is a block diagram for demonstrating the exposure control operation example of the imaging device which concerns on this embodiment. It is a flowchart which shows the infrared rays presence determination operation example in the imaging device which concerns on this embodiment. It is a flowchart which shows the example of inclination determination operation | movement in the imaging device which concerns on this embodiment. It is a figure which shows the example of the inclination angle of the imaging device which concerns on this embodiment. It is a flowchart which shows the high-intensity block determination operation example in the imaging device which concerns on this embodiment. It is a flowchart which shows the sun block determination operation example in the imaging device which concerns on this embodiment. It is a flowchart which shows the white balance control operation example in the imaging device which concerns on this embodiment.

  Hereinafter, examples of embodiments of the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same component and the overlapping description is abbreviate | omitted.

  FIG. 1 shows a schematic configuration example of an imaging apparatus according to the present embodiment. As shown in FIG. 1, the imaging apparatus 1 according to the present embodiment includes an infrared detection unit 10, an inclination detection unit 20, an image processing unit 30, and a control unit 75. The infrared detector 10 senses infrared rays. As the infrared detection unit 10, for example, an infrared sensor or the like can be applied. The tilt detection unit 20 detects the tilt of the imaging device 1. As the inclination detection unit 20, for example, an acceleration sensor or the like can be applied. The image processing unit 30 performs various image processes on the image data.

  FIG. 2 shows a configuration example of the imaging apparatus 1 in more detail than FIG. As shown in FIG. 2, the imaging apparatus 1 according to the present embodiment includes an optical element 40, an imaging element 50, an A / D conversion unit 60, in addition to the infrared detection unit 10, the inclination detection unit 20, and the image processing unit 30. An exposure control unit 70 is provided.

  An image of the object is formed on the image sensor 50 via the optical element 40. The imaging element 50 converts the image of the formed object into an image signal (image data) that is an electrical signal. The A / D converter 60 converts the image signal into a digital signal. The exposure control unit 70 includes a light amount control unit 71, an amplification unit 72, an image sensor driving unit 73, a luminance signal detection unit 74, and a control unit 75.

  The light amount control unit 71 is, for example, a diaphragm, and controls the amount of light incident on the image sensor 50 from the optical element 40. The amplifying unit 72 amplifies the image signal output from the image sensor 50. The image sensor driving unit 73 is, for example, a shutter and controls the exposure time. The luminance signal detection unit 74 outputs luminance signal detection based on the image signal. The control unit 75 is a central processing unit that controls the exposure control unit 70. Here, a CPU (Central Processing Unit) can be applied as the control unit 75, but the CPU in addition to the exposure control means 70, the infrared detection unit 10, the inclination detection unit 20, the image processing unit 30, and the optical element 40. The image sensor 50, the A / D converter 60, and the like are also controlled.

  FIG. 3 is a diagram for explaining an operation example of the imaging apparatus 1 according to the present embodiment. As shown in FIG. 3, an image of the object is formed on the image sensor 50 via the optical element 40. The image sensor 50 converts the image of the formed object into an image signal that is an electrical signal. The image signal output from the image sensor 50 is amplified by the amplification unit 72 and converted into a digital signal by the A / D conversion unit 60. The digitized image signal is supplied to the image processing unit 30. The luminance signal detection unit 74 to which the digital signal is input generates a luminance signal detection signal.

  Next, the control unit 75 receives the luminance signal detection signal generated by the luminance signal detection unit 74, and based on the luminance signal detection signal and the detection results input from the infrared detection unit 10 and the inclination detection unit 20, the light amount The controller 71, the amplifier 72, and the image sensor driving unit 73 are controlled. Specifically, the amount of light incident on the image sensor 50 is controlled by varying the aperture of the light amount controller 71. Then, the signal level input to the A / D converter 60 is controlled by varying the amplification factor of the amplifier 72. Further, the signal level output from the image sensor 50 is controlled by changing the exposure time (for example, shutter speed) of the image sensor drive unit 73. As described above, exposure control is performed in accordance with an EV diagram set in advance so as to always provide proper exposure.

(Infrared detector)
Next, the infrared detection unit 10 will be described in detail. In the present embodiment, an infrared sensor having sensitivity only to infrared rays and having high directivity can be applied as the infrared detection unit 10. In particular, a phototransistor having a narrow light receiving angle is suitable, but is not limited thereto.

  The infrared detection unit 10 as described above has a large difference between an output level in a state where there is sunlight in the shooting target direction and infrared is detected and an output level (Voff) in a state where no infrared is detected. Further, when the sun is in the light receiving direction of the infrared detecting unit 10, the difference in output level becomes larger.

  FIG. 4 shows an operation example for determining whether or not the sun is in the shooting target direction in the imaging apparatus 1 according to the present embodiment. Hereinafter, an example of an infrared presence / absence determination operation in the light receiving direction of the infrared detection unit 10 will be described with reference to the flowchart shown in FIG.

  First, the output level of the infrared detector 10 is acquired (step S401). Next, filter processing is performed (step S402), and the difference between the output level (Vir) acquired in step S401 and the output level (Voff) of the infrared detection unit 10 in a state where no infrared is detected is equal to or greater than the determination threshold α. It is determined whether or not there is (step S403). If the difference between the output level (Vir) and the output level (Voff) in the state where no infrared rays are detected is greater than or equal to the determination threshold value α, that is, if | Vir−Voff |> α (step S403 / YES), infrared rays It is determined that there is infrared light in the light receiving direction of the detection unit 10, and it is determined that the sun is in the shooting target direction (step S404).

  On the other hand, when the difference between the output level (Vir) and the output level (Voff) in the state where no infrared rays are detected is equal to or smaller than the determination threshold value α, that is, when | Vir−Voff | ≦ α (step S403 / NO). Then, it is determined that there is no infrared ray in the light receiving direction of the infrared detecting unit 10, and it is determined that there is no sun in the shooting target direction (step S405).

(Tilt detector)
Next, the tilt detection unit 20 will be described in detail. In the present embodiment, an acceleration sensor can be applied as the inclination detection unit 20. In particular, a triaxial acceleration sensor is suitable, but is not limited to this. Such a tilt detection unit 20 calculates the tilt angle of the imaging device 1 at the time of shooting.

  FIG. 5 shows an operation example for detecting the inclination with respect to the horizontal reference of the imaging apparatus 1 according to the present embodiment. Below, the operation example which detects the inclination with respect to the horizontal reference | standard of the imaging device 1 which concerns on this embodiment is demonstrated using the flowchart shown in FIG. In the present embodiment, as shown in FIG. 6, the angle A is the angle from the horizontal reference to the vertical direction with respect to the shooting direction.

  First, the tilt information of the imaging device 1 at the time of shooting is calculated and acquired from the output level of each axis of the tilt detector 20 (step S501). Next, filter processing is performed (step S502), and from the information acquired in step S501, the angle A indicating the inclination of the imaging device 1 with respect to the horizontal reference is upward, that is, a certain angle β or more in the direction opposite to the gravitational direction. It is determined whether or not there is (step S503). When the angle A is equal to or larger than the certain angle β upward (step S503 / YES), it is determined that there is a possibility that the sun exists in the imaging range (step S504). On the other hand, when the angle A is not more than a certain angle β upward (step S503 / NO), it is determined that there is no possibility that the sun exists in the imaging range (step S505).

  Here, when the imaging apparatus body is tilted and shooting is performed, for example, in vertical shooting, the angle of the shooting state obtained from the level is detected, and the imaging apparatus 1 is directed upward by a certain angle β with respect to the shooting angle. It is determined whether or not there is the above, and as described above, it is determined whether or not there is a possibility that the sun exists in the photographing range.

(Luminance signal detector)
Next, the luminance signal detector 74 will be described in detail. The luminance signal detection unit 74 includes a calculation unit that divides one angle of view into a total of 1024 blocks of 32 vertical blocks and 32 horizontal blocks and calculates the luminance value in each block. The calculation unit calculates the luminance average value of each block obtained by dividing the video signal of one angle of view into 1024 (= 32 × 32) blocks using the luminance average value of all the pixels in each block as the block luminance value, and outputs it. To do. Here, the luminance average value of each block is Yn (n = 0 to 1023).

  FIG. 7 shows an operation example for determining whether a block within a shooting angle of view is a high-intensity block in the imaging apparatus according to the present embodiment. Hereinafter, in the imaging apparatus according to the present embodiment, an operation example for determining whether a block within a shooting angle of view is a high-intensity block will be described with reference to a flowchart shown in FIG.

  First, the luminance signal detection unit 74 divides a video signal of one angle of view into 1024 (= 32 × 32) blocks, calculates a luminance average value Yn of each divided block, and outputs the luminance average value Yn to the control unit 75 ( Step S701). The control unit 75 that has acquired the average luminance value Yn of each divided block calculates the average luminance value Yavg of all blocks (step S702), and the average luminance value Yn of the divided blocks acquired from the luminance signal detection unit 74 and all the blocks. The difference from the luminance average value Yavg is calculated. Then, the control unit 75 determines whether or not the difference between the average luminance value Yn of the divided blocks and the average luminance value Yavg of all the blocks is equal to or larger than the determination threshold γ (step S703).

  When the difference between the average luminance value Yn of the divided blocks and the average luminance value Yavg of all the blocks is equal to or larger than the determination threshold γ (step S703 / YES), the control unit 75 determines that the divided block is a high luminance block. (Step S704). On the other hand, when the difference between the luminance average value Yn of the divided block and the luminance average value Yavg of all the blocks is equal to or less than the determination threshold γ (step S703 / NO), the control unit 75 does not determine the divided block as a high luminance block. (Step S705).

  In the present embodiment, the example in which the control unit 75 calculates the luminance average value Yavg of all blocks has been described. However, the present invention is not limited to this. For example, the luminance signal detection unit 74 may calculate the luminance average value Yavg of all blocks and output the luminance average value Yn of the divided blocks and the luminance average value Yavg of all blocks to the control unit 75.

(Exposure control)
Next, exposure control of the imaging apparatus 1 according to the present embodiment will be described. In this embodiment, exposure control is performed based on the presence or absence of a block determined as a sun block. FIG. 8 shows an operation example for determining whether or not there is a sun block within the shooting angle of view in the imaging apparatus 1 according to the present embodiment. Hereinafter, in the imaging device 1 according to the present embodiment, an operation example for determining whether or not there is a sun block within the shooting angle of view will be described with reference to the flowchart shown in FIG.

  First, by performing the process shown in FIG. 4, the above-described infrared presence / absence determination is performed based on the output of the infrared detection unit 10 (step S801), and it is determined whether or not the sun is in the shooting target direction (step S802). ). When it is determined that the sun is in the shooting target direction (step S802 / YES), the inclination of the imaging device 1 is determined (step S803). On the other hand, when it is determined that there is no sun in the shooting target direction (step S802 / NO), the control unit 75 determines that there is no sun block (step S804) and ends the operation.

  In step S803, whether the upward tilt of the imaging device 1 is equal to or greater than a certain angle by performing the processing shown in FIG. 5 and performing the tilt determination of the imaging device 1 based on the detection information of the tilt detection unit 20 described above. It is determined whether or not (step S805). When it is determined that the upward tilt of the imaging apparatus 1 is equal to or greater than a certain angle (step S805 / YES), high-intensity block determination is performed (step S806). On the other hand, when it determines with the upward inclination of the imaging device 1 not being beyond a fixed angle (step S805 / NO), the control part 75 determines with there being no sun block (step S804), and complete | finishes operation | movement.

  In step S806, the processing shown in FIG. 7 is performed, and the luminance signal detection unit 74 and the control unit 75 perform the above-described high-luminance block determination, whereby each video signal having one angle of view is divided into 1024 blocks. It is determined whether or not the divided block is a high luminance block (step S807). If it is determined that the divided block is a high luminance block (step S807 / YES), the control unit 75 determines that the divided block is a sun block (step S808). On the other hand, when it determines with a division | segmentation block not being a high-intensity block (step S807 / YES), the control part 75 determines with the division | segmentation block not being a sun block (step S804).

  As described above, the control unit 75 performs exposure calculation by removing the luminance information of the block determined to be the sun block. Here, in the exposure calculation, the luminance evaluation value Yev of the exposure calculation is obtained by multiplying each block by a specific coefficient and dividing the total integrated value of the blocks by the integrated value of the coefficients. In the brightness evaluation value calculation, when it is determined that there is a sun block at the shooting angle of view, the control unit 75 performs the calculation with the sun block coefficient set to 0 and the number of blocks reduced. The luminance evaluation value Yev is calculated using the following formula (1).

  Yev = Σ (kn × Yn) / Σkn (n = 0 to 1023) (1)

  In the above formula (1), kn represents the weight in each block. For example, kn is set to a value with a large central portion and a small peripheral portion, that is, a value with an emphasis on the central portion, but is not limited thereto. For the block determined to be a sun block, the brightness evaluation value Yev is calculated with kn = 0. By using the luminance evaluation value acquired in this way, accurate exposure control can be performed in a backlight state where the sun is within the shooting angle of view.

(Auto focus control)
Next, autofocus (automatic focus) control that applies the above-described exposure control will be described. The processing shown in FIG. 8 is performed to determine the presence or absence of the sun block by performing the sun block determination. When there is a block determined to be the sun block, the sun block is removed and the detection signal for focusing is detected. Perform the operation. Thereby, the false focus by the high-intensity signal of a solar part can be reduced, and a more accurate autofocus can be implement | achieved.

(White balance control)
Next, white balance control will be described. In the present embodiment, the position of the sun, for example, the height is determined from the position of the sun block within the shooting angle of view and the tilt information of the imaging device 1, and the white balance is controlled. FIG. 9 shows an operation example of auto white balance control in the imaging apparatus 1 according to the present embodiment. Hereinafter, an operation example of auto white balance control in the imaging apparatus 1 according to the present embodiment will be described with reference to a flowchart shown in FIG.

  First, by performing the process shown in FIG. 4, the above-described infrared presence / absence determination is performed based on the output from the infrared detection unit 10 (step S901), and it is determined whether or not the sun is in the shooting target direction (step S901). S902). When it is determined that the sun is in the shooting target direction (step S902 / YES), the inclination of the imaging device 1 is determined (step S903). On the other hand, when it is determined that there is no sun in the shooting target direction (step S902 / NO), a correction value is output by normal white balance calculation (step S904), and the operation is terminated.

  In step S903, the process shown in FIG. 5 is performed, and the above-described inclination determination of the imaging apparatus 1 is performed based on the detection information of the inclination detection unit 20, so that the upward inclination of the imaging apparatus 1 is greater than a certain angle. It is determined whether or not (step S905). When it is determined that the upward inclination of the imaging apparatus 1 is equal to or greater than a certain angle (step S905 / YES), high-intensity block determination is performed (step S906). On the other hand, when it is determined that the upward inclination of the imaging apparatus 1 is not equal to or greater than a certain angle (step S905 / NO), a correction value is output by normal white balance calculation (step S904), and the operation is terminated.

  In step S906, the processing shown in FIG. 7 is performed, and the luminance signal detection unit 74 and the control unit 75 perform the above-described high luminance block determination, so that the video signal of one angle of view is divided into 256 of 16 × 16. It is determined whether or not the divided block is a high luminance block (step S907). If it is determined that the divided block is not a high luminance block (step S907 / YES), a correction value is output by normal white balance calculation (step S904), and the operation is terminated. In the present embodiment, an example in which a video signal of an angle of view is divided into 16 × 16 256 has been described. However, the present invention is not limited to this.

  On the other hand, if it is determined in step S907 that the divided block is a high luminance block (step S907 / YES), it is determined that there is sunlight at the position of the high luminance block. Then, the sun angle and height are calculated from the high luminance block and the inclination of the imaging device 1 (step S908). Furthermore, the color temperature of sunlight under a shooting condition (for example, the height of the sun) is estimated from a color temperature table stored in association with the angle of sunlight and the color temperature prepared in advance (step S909). A correction value is output by white balance calculation so as to achieve an optimum correction for the estimated color temperature (step S910). As a result, malfunction of auto white balance due to chromatic color information of the object to be photographed can be suppressed, and more accurate auto white balance control can be realized.

  In the color temperature table, average color temperature information based on the position of the sun and appropriate correction data information according to the color temperature information are stored in advance. As the color temperature information, for example, the color temperature can be about 6000 K in the daytime, that is, when the sun is high, and the color temperature can be about 4500 K in the evening, that is, when the sun is low, It is not limited to this.

  As described above, in the present embodiment, the infrared ray detection unit determines the presence or absence of sunlight directed to the imaging device, and the inclination detection unit detects the tilt angle of the imaging device, so that the sun within the shooting field angle is detected. The presence or absence of is determined. Also, the luminance distribution state in the shooting angle of view is analyzed based on each luminance value of the block obtained by dividing the one angle of view obtained from the luminance signal detection unit, and the position of sunlight in the shooting angle of view is detected. . And a control part calculates the brightness | luminance evaluation value Yev for exposure calculation based on the brightness distribution state and the presence or absence of sunlight of each block.

  Adjustment of parameters for determining exposure control based on the brightness evaluation value Yev calculated as described above, such as an aperture, an amplification factor, and a shutter, is performed. This makes it possible to obtain a stable and appropriate exposure without being influenced by the sun in a backlight state where the sun is included in the shooting angle of view. That is, it is possible to improve the accuracy of the backlight state determination and always perform the optimum exposure correction according to the shooting state.

  Further, by using the position information of sunlight in the image signal, it is possible to reduce false focusing due to a high luminance signal of the sun portion, and it is possible to realize autofocus with higher accuracy. Furthermore, by using the position information of sunlight in the image signal, it is possible to suppress malfunction of auto white balance due to chromatic color information of the object to be photographed and to realize more accurate auto white balance control. Become.

  Note that a program for the CPU to execute the processing shown in the flowcharts of the respective drawings constitutes a program according to the present invention. As a computer-readable recording medium for recording the program, a semiconductor storage unit, an optical and / or magnetic storage unit, or the like can be used. By using such a program and a recording medium in a system having a configuration different from that of each of the above-described embodiments and causing the CPU to execute the program, substantially the same effect as the present invention can be obtained.

  Although specifically described based on the preferred embodiments, the present invention is not limited to the above-described imaging apparatus, imaging method, program, and recording medium, and various modifications can be made without departing from the scope of the invention. Needless to say.

  The present invention can be applied not only to an imaging apparatus but also to various electronic devices.

DESCRIPTION OF SYMBOLS 1 Imaging device 10 Infrared detection part 20 Inclination detection part 30 Image processing part 40 Optical element 50 Imaging element 60 A / D conversion part 70 Exposure control part 71 Light quantity control part 72 Amplification part 73 Imaging element drive part 74 Luminance signal detection part 75 Control Part

JP 2000-050153 A

Claims (15)

Infrared detecting means for detecting infrared;
Tilt detecting means for detecting the tilt of the imaging device;
Image processing means for performing image processing on image data output from the image sensor;
Solar light presence / absence determining means for determining whether or not sunlight is included in a field angle of view by the imaging device,
The infrared detection means outputs an electrical signal based on the detection of the infrared;
The image processing means outputs luminance information of the image data;
The sunlight presence / absence determination means includes an electrical signal output by the infrared detection stage, an inclination of the imaging device detected by the inclination detection means, and luminance information of the image data output by the image processing means. Based on the above, it is determined whether or not sunlight is included in the shooting angle of view. The sunlight presence determination means is
The difference between the electrical signal output from the infrared detection means and the output level of the infrared detection means in a state where sunlight does not exist in the direction of the image capturing object is a predetermined value or more,
The inclination of the imaging device acquired by the inclination detection means is equal to or greater than a predetermined angle in a direction opposite to the gravitational direction with respect to a horizontal reference;
When the difference between the average luminance value of the image data for one angle of view and the average luminance value of the blocks when the image data for one angle of view is divided into a predetermined number of blocks is greater than or equal to a predetermined value,
The imaging apparatus according to claim 1, wherein it is determined that sunlight is included in the shooting angle of view.   The sunlight presence / absence determining means determines that a block having an average luminance value equal to or greater than a predetermined value as a difference from an average luminance value of the image data for the one angle of view is a sunlight block containing sunlight. The imaging apparatus according to claim 2. Exposure control means for controlling exposure based on the image data;
The exposure control means removes the brightness information of the sunlight part from the brightness information of the image data when the sunlight presence / absence determination means determines that sunlight is included in the shooting angle of view. The imaging apparatus according to claim 1, wherein the imaging apparatus is controlled. A light amount control means for controlling a light amount incident on the image sensor;
Image sensor driving means for controlling the exposure time;
Amplifying means for amplifying the signal of the image data output from the image sensor;
5. The image pickup apparatus according to claim 4, wherein the exposure control unit controls the light amount control unit, the image sensor driving unit, and the amplification unit based on the determination by the sunlight presence / absence determination unit. Automatic focusing control means for controlling automatic focusing based on the image data,
The automatic focusing control means removes the information of the sunlight part from the information of the image data when the sunlight presence / absence determination means determines that sunlight is included in the shooting angle of view. The imaging apparatus according to claim 1, wherein focus is controlled. Color temperature storage means for storing the angle of sunlight and the color temperature in association with each other;
White balance control means for controlling white balance based on the image data,
The white balance control unit estimates the angle of the sunlight from the sunlight part when the sunlight presence / absence determination unit determines that sunlight is included in the shooting angle of view, and the angle of the sunlight The image pickup apparatus according to claim 1, wherein white balance is controlled based on the color temperature stored in the color temperature storage unit. An infrared detection step of detecting infrared rays and outputting an electrical signal based on the detection of the infrared rays;
A tilt detection step for detecting the tilt of the imaging device;
An image processing step of performing image processing on the image data output from the image sensor and outputting luminance information of the image data;
And a sunlight presence / absence determination step for determining whether or not sunlight is included in a field angle of view by the imaging device,
The sunlight presence / absence determination step includes an electrical signal output by the infrared detection step, a tilt of the imaging device detected by the tilt detection step, and luminance information of the image data output by the image processing step. Based on the above, it is determined whether or not sunlight is included in the shooting angle of view. The sunlight presence determination step includes
The difference between the electrical signal output in the infrared detection step and the output level in the absence of sunlight in the shooting target direction is a predetermined value or more,
The inclination of the imaging device acquired by the inclination detection step is a predetermined angle or more in a direction opposite to the gravitational direction with respect to a horizontal reference;
When the difference between the average luminance value of the image data for one angle of view and the average luminance value of the blocks when the image data for one angle of view is divided into a predetermined number of blocks is greater than or equal to a predetermined value,
The imaging method according to claim 8, wherein sunlight is determined to be included in the shooting angle of view.   In the sunlight presence / absence determining step, a block having an average luminance value that is equal to or greater than a predetermined value with respect to the average luminance value of the image data for the one angle of view is determined to be a sunlight block containing sunlight. The imaging method according to claim 9. An exposure control step of controlling exposure based on the image data;
In the exposure control step, when it is determined by the sunlight presence / absence determination step that sunlight is included in the shooting angle of view, the exposure is performed by removing the luminance information of the sunlight portion from the luminance information of the image data. The imaging method according to claim 8, wherein the imaging method is controlled. An automatic focusing control step for controlling automatic focusing based on the image data;
In the automatic focusing control step, when it is determined by the sunlight presence / absence determination step that sunlight is included in the shooting angle of view, the information on the sunlight portion is removed from the information of the image data to perform automatic focusing. The imaging method according to claim 8, wherein focus is controlled. A color temperature storage step for storing the angle of sunlight and the color temperature in association with each other;
A white balance control step for controlling white balance based on the image data, and
The white balance control step estimates the angle of sunlight from the sunlight portion when the sunlight presence / absence determination step determines that sunlight is included in the shooting angle of view, and the angle of sunlight The imaging method according to claim 8, wherein white balance is controlled based on the color temperature stored in the color temperature storage step. Detecting infrared rays and outputting an electric signal based on the detection of the infrared rays;
Processing to detect the tilt of the imaging device;
Performing image processing on image data output from the image sensor, and outputting luminance information of the image data;
Causing the computer to execute a process of determining whether or not sunlight is included in a shooting angle of view by the imaging device based on the electrical signal, the tilt of the imaging device, and the luminance information of the image data. A program characterized by   The computer-readable recording medium which recorded the program of Claim 14.

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