Real-time-measurement projection device and three-dimensional-projection measurement device

1. A real-time-measurement projection device comprising:

a projection device that projects pattern light including a pattern image onto a projection target;

an imaging device that electronically acquires a captured image of the projection target irradiated with the pattern light for each pixel for a predetermined exposure time; and

a calculation device that computes pixel correspondence information between each pixel of the imaging device and each pixel of the projection device by contrasting data of the captured image with data of the pattern image, converts measurement information of each pixel obtained from the imaging device into a correspondence coordinate of the projection device on the basis of the pixel correspondence information, and generates a video to be projected onto the projection target on the basis of the measurement information of each pixel converted into the correspondence coordinate of the projection device,

wherein the projection device is configured to irradiate the projection target with the video generated by the calculation device as video light in synchronization with a cycle of an exposure time in the imaging device, and

wherein the imaging device temporally deviates a start point and an end point of the predetermined exposure time for each pixel.

2. The real-time-measurement projection device of claim 1 ,

wherein the cycle of the exposure time in the imaging device is set in the frame unit of an image.

3. The real-time-measurement projection device of claim 1 ,

wherein the video light is visible light, and the pattern light is invisible light.

4. The real-time-measurement projection device of claim 1 ,

wherein each of the pattern light projection device and the video light projection device includes

a visible light source;

an invisible light source;

a dichroic mirror that aligns light beams from both of the light sources on a common optical axis;

a digital micro-mirror element that spatially modulates light from the mirror; and

a projection lens that focuses light emitted from the digital micro-mirror element on the projection target.

5. The real-time-measurement projection device of claim 1 ,

wherein the imaging device includes a visible light cutoff filter through which the invisible light is transmitted and which blocks the visible light.

6. The real-time-measurement projection device of claim 1 ,

wherein the pattern light is temporally shifted to be projected for each of a plurality of subframe regions set in each frame.

7. The real-time-measurement projection device of claim 1 ,

wherein the measurement information is distance information obtained according to trigonometry on the basis of the pixel correspondence information, position information of the imaging device, and position information of the projection device.

8. The real-time-measurement projection device of claim 1 ,

wherein the pattern light is set on the basis of a space coding method.

9. The real-time-measurement projection device of claim 1 ,

wherein the measurement information used for generation of the video is a distance, and a texture image used for generation of a video is changed according to the distance.

10. The real-time-measurement projection device of claim 1 ,

wherein the measurement information used for generation of the video is a distance, a clipping mask of a projection target object is generated according to the distance, and a video in which a color of a contour of the mask is changed is generated.

11. The real-time-measurement projection device of claim 1 ,

wherein the measurement information used for generation of the video is a distance, and a color of a video is changed according to the distance.

12. The real-time-measurement projection device of claim 1 ,

wherein the measurement information is color information imaged by the imaging device.

13. The real-time-measurement projection device of claim 12 ,

wherein the measurement information used for generation of the video is color information, and video correction is performed by using a complementary color of a color included in the color information.

14. The real-time-measurement projection device of claim 1 ,

wherein the pattern image includes a plurality of pairs of black and white inversion image patterns based on a Manchester coding method, and video content is updated every two frames.

15. The real-time-measurement projection device of claim 14 ,

wherein the pattern image is divided into a plurality of subframe regions set in each frame, and the video content of a portion of the pattern image corresponding to each subframe region is updated every two frames.

16. A three-dimensional-projection measurement device comprising:

a projection device that projects pattern light including a pattern image onto a projection target;

an imaging device that electronically acquires a captured image of the projection target irradiated with the pattern light for each pixel for a predetermined exposure time; and

a calculation device that calculates a distance to each point of the projection target by contrasting data of the captured image with data of the pattern image,

wherein the imaging device temporally deviates a start point and an end point of the predetermined exposure time for each pixel.