IMAGE ADJUSTMENT SYSTEM, IMAGE ADJUSTMENT METHOD, AND IMAGE ADJUSTMENT DEVICE
An image adjustment system includes: an image projection device that projects a projected image onto a projection target; an imaging device that acquires a first image by capturing an image of a first region including a part of the projected image and a second image by capturing an image of a second region including another part of the projected image, the second region including an overlapping region in which the first region and the second region overlap; and a controller that controls a projection position of the projected image. The controller converts a first and a second coordinate systems of the first and the second images into a combined coordinate system common to the first image and the second image, generates correction information including position information indicating a projection area of the image projection device in the combined coordinate system, and generates the projected image based on the correction information.
1 . An image adjustment system comprising:
an image projection device that projects a projected image onto a projection target;
an imaging device that acquires a first image by capturing an image of a first region including a part of the projected image and a second image by capturing an image of a second region including another part of the projected image, the second region including an overlapping region in which the first region and the second region overlap; and
a controller that controls a projection position of the projected image, wherein
the controller is configured to:
convert a first coordinate system of the first image and a second coordinate system of the second image into a combined coordinate system common to the first image and the second image;
generate correction information including position information indicating a projection area of the image projection device in the combined coordinate system; and
generate the projected image based on the correction information.
2 . The image adjustment system according to claim 1 , wherein the controller generates the projected image by converting coordinates indicating the position information in the combined coordinate system into coordinates in the first coordinate system and the second coordinate system, and further converting the coordinates in the first coordinate system and the second coordinate system into coordinates into a projector coordinate system of the image projection device.
3 . The image adjustment system according to claim 1 , wherein
the controller generates a composite image of the first image and the second image, based on the overlapping region, and
the composite image have coordinates indicated by the combined coordinate system.
4 . The image adjustment system according to claim 3 , wherein the controller superimposes an adjustment image indicating the projection area, over the composite image.
5 . The image adjustment system according to claim 4 , wherein a plurality of the image projection devices project a plurality of the projected images onto the projection target, respectively, and
the controller is configured to:
generate a plurality of the adjustment images corresponding to number of the plurality of projected images; and
superimpose the plurality of adjustment images over the composite image.
6 . The image adjustment system according to claim 5 , wherein the controller is configured to:
detect a shape of the projection target in the composite image;
superimpose the plurality of adjustment images over the composite image based on the detected shape of the projection target.
7 . The image adjustment system according to claim 6 , wherein the controller is configured to:
perform a projective transformation of the detected shape of the projection target;
determine tentative positions of the plurality of adjustment images based on a shape resultant of the projective transformation;
determine positions of the plurality of adjustment images in the composite image by performing inverse projective transformation of the tentative positions of the plurality of adjustment images; and
superimpose the plurality of adjustment images over the composite image based on the positions of the plurality of adjustment images in the composite image.
8 . The image adjustment system according to claim 1 , wherein the image projection device is configured to further project an adjustment image indicating the projection area onto the projection target.
9 . The image adjustment system according to claim 1 , wherein the controller is configured to determine the projection area based on the first image and the second image.
10 . An image adjustment method comprising:
a step of acquiring a first image by capturing an image of a first region including a part of a projected image projected onto a projection target, and a second image by capturing an image of a second region including another part of the projected image, the second region including an overlapping region in which the first region and the second region overlap;
a step of converting a first coordinate system of the first image and a second coordinate system of the second image into a combined coordinate system common to the first image and the second image;
a step of generating correction information including position information indicating a projection area of the projected image in the combined coordinate system; and
a step of generating the projected image based on the correction information.
11 . The image adjustment method according to claim 10 , wherein the step of generating the correction information includes:
converting coordinates indicating the position information in the combined coordinate system into coordinates in the first coordinate system and the second coordinate system; and
converting the coordinates in the first coordinate system and the second coordinate system into coordinates in a projector coordinate system of an image projection device that projects the projected image.
12 . The image adjustment method according to claim 10 , wherein the step of converting the first coordinate system and the second coordinate system includes generating a composite image of the first image and the second image, based on the overlapping region.
13 . An image adjustment device that generates a projected image that is to be projected onto a projection target by an image projection device, the image adjustment device comprising:
an image acquisition unit that acquires a first image by capturing an image of a first region including a part of the projected image and a second image by capturing an image of a second region including another part of the projected image, the second region including an overlapping region in which the first region and the second region overlap;
a coordinate converter that converts a first coordinate system of the first image and a second coordinate system of the second image into a combined coordinate system common to the first image and the second image;
a correction information generator that generates correction information including position information indicating a projection area of the image projection device in the combined coordinate system; and
a video generator that generates the projected image based on the correction information.
14 . The image adjustment device according to claim 13 , wherein the correction information generator generates the correction information by converting coordinates indicating the position information in the combined coordinate system into coordinates in the first coordinate system and the second coordinate system, and further converting the coordinates in the first coordinate system and the second coordinate system into coordinates into a projector coordinate system of the image projection device.
15 . The image adjustment device according to claim 13 , wherein the coordinate converter generates a composite image of the first image and the second image, based on the overlapping region.