TWI488069B - Optical painting method - Google Patents

Description

Optical drawing method

This invention relates to an optical mapping method and, more particularly, to an optical mapping method for a handheld device.

In recent years, two Japanese designers, Nageta Takeshi and Monno Kazue, used the camera's exposure function in a dark environment to capture the light and shadow of a flashlight and present a trajectory pattern of light and shadow. This method of presenting the light and shadow trajectory is currently called the light shadow graffiti (PiKAPiKA).

The implementation of PiKAPiKA requires the preparation of a camera and a flashlight, with one person acting as a photographer and the other using a flashlight as a painter. When the photographer starts the camera for long exposure, the painter starts to draw the picture facing the camera, the camera records the trajectory of the flashlight and the end of the exposure, and completes a PiKAPiKA painting.

Since the camera is a pattern of recorded images, when the painter starts to paint the photographer, he or she first draws the pattern to be expressed in a mirror image. In this way, the camera records a pattern that has been mirrored twice, which is the pattern in the correct direction that the painter wants to express. However, such a complicated painting method is quite difficult for beginners who have not been practiced.

The present invention relates to an optical mapping method. By inverting the image of the input information, the user is prompted to move the handheld device according to the mirror inversion pattern. To achieve the purpose of optical mapping.

According to an aspect of the invention, an optical mapping method is proposed, the method comprising the following steps. A handheld device is provided. The handheld device includes an input unit, a processor and a light source. An input information is received by the input unit. The image is inversely mirrored by the algorithm by the algorithm to obtain a mirror inversion pattern. The processor outputs a prompt message to prompt the user to move the handheld device according to the mirror inversion pattern such that the light beam of the light source forms an optical track at a time interval.

In order to better understand the above and other aspects of the present invention, the preferred embodiments are described below, and in conjunction with the drawings, the detailed description is as follows:

1 is a schematic diagram of an optical mapping system in accordance with an embodiment of the present invention. Referring to FIG. 1 , the optical mapping system 10 includes a handheld device 100 and a camera device 120 . The handheld device 100 has a light source 102, such as a flash light source or other illumination unit, for providing a light beam L. The camera 120 is, for example, a camera or a camera, having an exposure function, particularly a Long Exposure photography, which can take a long time to open the shutter to capture the trajectory of the light beam L of the light source 102 at a time interval.

FIG. 2 is a schematic diagram showing the internal structure of the handheld device 100 according to an embodiment of the invention. As shown in FIG. 2, the handheld device 100 includes a processor 104, a display unit 106, an input unit 108, and a sensing unit 110 in addition to the light source 102.

In an embodiment, the input unit 108 is, for example, a touch screen and a slide. A mouse or keyboard for providing an interface to receive user input information. The processor 104 is, for example, a central processing unit (CPU) or a computer that can perform algorithm functions or other arithmetic processing functions. The display unit 106 is, for example, a liquid crystal screen, an organic light emitting diode screen, an electronic paper, a touch screen, a projection screen or any other screen capable of displaying images, and the display unit 106 is selectively disposed to provide image information. The sensing unit 110 is, for example, an accelerometer or other gravity sensing unit for detecting the gravitational acceleration value of the handheld device in at least two directions.

FIG. 3 is a schematic flow chart showing the steps of an optical drawing method according to an embodiment of the invention. Referring to FIGS. 1 to 3 simultaneously, first, in step S1, the input unit 108 of the handheld device 100 receives input information input by the user, for example, the user desires to optically depict one of the images or characters.

Next, step S2 is performed. The processor 104 of the handheld device 100 can use the algorithm to mirror invert the input information to obtain a mirror image inversion pattern, and provide the user with the basis for optical drawing.

Then, when step S3 is performed, the user can move the light source of the handheld device 100 according to the mirror inversion pattern for optical drawing. At the same time, the sensing unit 110 continuously detects the position coordinates of the handheld device 100 to obtain a position information.

In one embodiment, the method for continuously detecting the position coordinates of the handheld device 100 is, for example, detecting the plurality of gravitational accelerations of the handheld device 100 in at least two directions by the sensing unit 110 (eg, a gravity sensing unit). Value to get a location information. And, by the operation of the processor 104, the displacement trajectory of the handheld device is determined. The method for judging the displacement trajectory is, for example, by an algorithm unit (not shown) of the processor 104, according to the acceleration of gravity The value or the position information obtained by the operation is converted into a corresponding displacement trajectory.

Then, step S4 is performed. The processor 104 performs an algorithm operation to add a displacement trajectory to the input information (eg, an image or text) to provide a prompt message based on the displacement trajectory. The prompt message can be used to prompt the user to move the handheld device 100 in accordance with the mirror inversion pattern such that the light beam of the light source forms an optical track at a time interval.

In an embodiment, the step of providing a prompt message according to the displacement trajectory is displayed on the display unit 106 to display a mirror reverse pattern, and at the same time, a message such as a color or a cursor is displayed to display a displacement that the user should move when drawing the mirror reverse pattern. Tracks and paths.

In an embodiment, the prompt message (color or cursor) may be displayed according to a preset speed, which may be set by the user or preset by the system. In this way, the user can move the handheld device 100 according to the color or the changing speed of the cursor to improve the correctness of the system to determine whether the optical drawing is completed or not. Of course, in other embodiments, the handheld device 100 may further include a speaker or a micro motor. In this case, the prompt message may also be presented in a non-image manner such as sound or vibration. In other words, the prompt message is not limited to the color or the cursor as long as the user is prompted to move the handheld device 100 in accordance with the mirror inversion pattern.

Finally, in step S5, after the step of providing the prompt message, the processor 104 determines whether the user has rendered the input information initially input. If not, the process returns to step S3, and the prompt message is further provided according to the displacement track to assist the user in completing the drawing of the input information. If so, the long exposure function of the light source 102 and the camera 120 can be turned off, and the flow of the optical drawing can be ended.

In summary, the optical drawing method of the above embodiment of the present invention uses an algorithm to mirror inversion of input information to obtain a mirror inversion pattern. Moreover, the user is given a message to clearly and unambiguously instruct the user to move the drawing path of the light source of the handheld device according to the mirror inversion pattern, thereby facilitating the user to complete the optical drawing more easily. Also, increase the chances of success in optical mapping. In one embodiment, the optical trajectory formed by the light beam of the light source on the drawing path can be captured by the long exposure function performed by the camera at a time interval.

In conclusion, the present invention has been disclosed in the above preferred embodiments, and is not intended to limit the present invention. A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

10‧‧‧ optical mapping system

100‧‧‧Handheld devices

102‧‧‧Input unit

104‧‧‧Processor

106‧‧‧Display unit

108‧‧‧Light source

110‧‧‧Sensor unit

120‧‧‧photographing device

L‧‧‧beam

S1‧‧‧ receives an input data

S2‧‧‧Inverted input information by algorithm

S3‧‧‧Sensor unit receives 3D information and turns to displacement track

S4‧‧‧Adding the displacement trajectory to the input information by algorithm

S5‧‧‧Judge whether the input information has been scanned and completed

1 is a schematic diagram of an optical mapping system in accordance with an embodiment of the present invention.

2 is a schematic block diagram of a handheld device in accordance with an embodiment of the present invention.

FIG. 3 is a schematic flow chart of an optical drawing method according to an embodiment of the invention.

S1‧‧‧ receives an input data

S2‧‧‧Inverted input information by algorithm

S3‧‧‧Sensor unit receives 3D information and turns to displacement track

S4‧‧‧Adding the displacement trajectory to the input information by algorithm

S5‧‧‧Judge whether the input information has been scanned and completed

Claims (9)

An optical drawing method includes: providing a handheld device, the handheld device comprising an input unit, a processor and a light source; receiving an input information by the input unit; and inputting the information by an algorithm by the processor Mirroring inversion to obtain a mirror inversion pattern; and outputting a prompt message by the processor to prompt the user to move the handheld device according to the mirror inversion pattern, so that the light beam of the light source forms a time interval Optical trajectory. The optical drawing method of claim 1, wherein after the step of providing the prompt message, the method further comprises: the processor determining whether the input information has been rendered, and if so, ending the optical drawing method, if not , continue to provide the prompt message. The optical drawing method of claim 1, wherein the handheld device further comprises a sensing unit, and the step of providing the prompting information comprises: continuously detecting position information of the handheld device by the sensing unit; Converting the position information into a displacement trajectory by the processor; and providing the prompt message according to the displacement trajectory. The optical drawing method of claim 3, wherein the sensing unit is a gravity sensing unit, and the step of continuously detecting the position information of the handheld device comprises: detecting by the gravity sensing unit The handheld device has a plurality of gravitational acceleration values in at least two dimensions. The optical drawing method of claim 4, wherein the step of converting the position information into the displacement trajectory comprises: determining, by the algorithm unit of the processor, the handheld device according to the gravity acceleration values The displacement trajectory. The optical drawing method of claim 3, wherein the handheld device further comprises a display unit, and the step of providing the prompt message according to the displacement track comprises: displaying the image inversion pattern on the display unit and simultaneously displaying The color or cursor corresponding to the displacement track. The optical drawing method of claim 6, wherein the color or the cursor is displayed according to a preset speed, and the preset speed is set by a user. An optical drawing method as described in claim 3, The prompt message is a sound, a vibration or an image. The optical drawing method of claim 1, further comprising: providing a phase capturing device having a long exposure function; and performing the long exposure function at the time interval to capture the light beam of the light source The optical trajectory formed.