Image processing apparatus and method
The present technology relates to an image processing apparatus and a method capable of performing calibration of a correction amount in brightness correction more easily. The image processing apparatus according to the present technology performs blending calculation for correcting brightness of an image in accordance with a distance from a projection unit configured to project the image to a projection surface onto which the image is projected, and in accordance with a characteristic of the projection unit. The present technology can be applied, for example, to a projector, a camera, or an electronic apparatus including both function of a projector and a camera, a computer that controls these, and to a system in which an apparatuses having a projector and a camera are operating in cooperation.
1. An image processing apparatus, comprising:
at least one processor configured to:
correct brightness of each image of a plurality of images projected by a plurality of projection units, based on mixing ratio information, wherein
the mixing ratio information is associated with a mixing ratio of each image of the plurality of images in a region in which a first image of the plurality of images partially overlaps with a second image of the plurality of images, and
the mixing ratio information comprises geometric calibration information associated with each projection unit of the plurality of projection units;
generate correction information to correct the mixing ratio information, based on a characteristic of each projection unit of the plurality of projection units; and
correct the mixing ratio information based on the generated correction information.
2. The image processing apparatus according to claim 1 , wherein the mixing ratio information is map information representing the mixing ratio for each pixel of each image of the plurality of images.
3. The image processing apparatus according to claim 1 , wherein the at least one processor is further configured to correct luminance information associated with the brightness of each image of the plurality of images for each projection unit of the plurality of projection units, based on a third image of the plurality of images for which the brightness is corrected.
4. The image processing apparatus according to claim 1 , wherein luminance information associated with the brightness of each image of the plurality of images is determined based on a distance calculated from each projection unit of the plurality of projection units to a projection surface.
5. The image processing apparatus according to claim 4 , wherein the luminance information is map information representing brightness for each pixel of each image of the plurality of images.
6. The image processing apparatus according to claim 3 , wherein the at least one processor is further configured to correct the brightness of each image of the plurality of images, based on the corrected luminance information.
7. The image processing apparatus according to claim 6 , wherein the at least one processor is further configured to correct the brightness of each image of the plurality of images, in a uniform perceptual color space.
8. The image processing apparatus according to claim 6 , wherein the at least one processor is further configured to control projection of each image of the plurality of images for which the brightness is corrected.
9. A method, comprising:
correcting brightness of each image of a plurality of images projected by a plurality of projection units, based on mixing ratio information, wherein
the mixing ratio information is associated with a mixing ratio of each image of the plurality of images in a region in which a first image of the plurality of images partially overlaps with a second image of the plurality of images, and
the mixing ratio information comprises geometric calibration information associated with each projection unit of the plurality of projection units;
generating correction information to correct the mixing ratio information, based on a characteristic of each projection unit of the plurality of projection units; and
correcting the mixing ratio information based on the generated correction information.
10. The method according to claim 9 , wherein the mixing ratio information is map information representing the mixing ratio for each pixel of each image of the plurality of images.
11. The method according to claim 9 , further comprising correcting luminance information associated with the brightness of each image of the plurality of images for each projection unit of the plurality of projection units, based on a third image of the plurality of images for which the brightness is corrected.
12. The method according to claim 9 , wherein luminance information associated with the brightness of each image of the plurality of images is determined based on a distance calculated from each projection unit of the plurality of projection units to a projection surface.
13. The method according to claim 12 , wherein the luminance information is map information representing brightness for each pixel of each image of the plurality of images.
14. The method according to claim 11 , further comprising correcting the brightness of each image of the plurality of images based on the corrected luminance information.
15. The method according to claim 14 , further comprising correcting the brightness of each image of the plurality of images in a uniform perceptual color space.
16. The method according to claim 14 , further comprising projecting each image of the plurality of images for which the brightness is corrected.
17. An image processing apparatus, comprising:
at least one processor configured to:
correct brightness of each image of a plurality of images, projected by a plurality of projection units, based on mixing ratio information,
wherein the mixing ratio information is associated with a mixing ratio of each image of the plurality of images in a region in which a first image of the plurality of images partially overlaps with a second image of the plurality of images;
generate correction information to correct the mixing ratio information, based on a characteristic of each projection unit of the plurality of projection units; and
correct the mixing ratio information based on the generated correction information.