US 10,891,750 B2
Projection control device, marker detection method, and storage medium
Masaki Kobayashi, Higashiyamato (JP)
Assigned to CASIO COMPUTER CO., LTD., Tokyo (JP)
Filed by CASIO COMPUTER CO., LTD., Tokyo (JP)
Filed on Feb. 24, 2019, as Appl. No. 16/283,803.
Claims priority of application No. 2018-057994 (JP), filed on Mar. 26, 2018.
Prior Publication US 2019/0295277 A1, Sep. 26, 2019
Int. Cl. G06T 7/564 (2017.01); G03B 21/56 (2006.01); G03B 21/14 (2006.01)
CPC G06T 7/564 (2017.01) [G03B 21/145 (2013.01); G03B 21/567 (2013.01); G06T 2207/30204 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A projection control device comprising:
a projection module configured to project a correcting image onto a projection target, the correcting image including an image position identifying marker which includes a first polygon and a second polygon positioned inside the first polygon and which is arranged in a predetermined position, and the correcting image being projected onto the projection target for pickup by an image pickup device,
wherein at least one of sides of the first polygon is non-parallel to sides of the second polygon, and
wherein the second polygon has as many vertices as the first polygon or has fewer vertices than the first polygon.