US 11,818,516 B2
Information generation method using projection image and taken image, information generation system, and non-transitory computer-readable storage medium storing program
Ippei Kurota, Matsumoto (JP)
Assigned to SEIKO EPSON CORPORATION, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Sep. 9, 2021, as Appl. No. 17/470,760.
Claims priority of application No. 2020-151908 (JP), filed on Sep. 10, 2020.
Prior Publication US 2022/0078384 A1, Mar. 10, 2022
Int. Cl. H04N 9/31 (2006.01); G06F 3/04883 (2022.01)
CPC H04N 9/3185 (2013.01) [G06F 3/04883 (2013.01); H04N 9/3176 (2013.01); H04N 9/3194 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An information generation method comprising:
identifying a correspondence relationship between a projector coordinate system representing a position on a projection image projected by a projector and a camera coordinate system representing a position on a taken image taken by a camera, the correspondence relationship identified based on a first image and a second image, the first image projected on a projection target from the projector, and the second image obtained by imaging the projection target using the camera in a state in which the first image is projected on the projection target;
displaying, by a display device, the taken image of the projection target which is taken by the camera;
receiving a first operation which designates a display area in the camera coordinate system; and
generating information for making the projector project the projection image in which a projection object is disposed in the display area designated by the first operation based on the correspondence relationship and information representing the display area designated by the first operation, wherein
the information representing the display area is information representing a plurality of points on an outline of the display area, and
the first operation is an operation of drawing the outline on the taken image displayed by the display device, coordinates on a trajectory drawn by the first operation are obtained at regular time intervals, and the coordinates obtained are taken as points on the outline.