US 12,238,462 B2
Projection position guiding method
Chung-Lung Yang, Hsin-Chu (TW); Chien-Chun Peng, Hsin-Chu (TW); Hsun-Cheng Tu, Hsin-Chu (TW); and Kang-Shun Hsu, Hsin-Chu (TW)
Assigned to Coretronic Corporation, Hsin-Chu (TW)
Filed by Coretronic Corporation, Hsin-Chu (TW)
Filed on Jan. 9, 2023, as Appl. No. 18/151,476.
Claims priority of application No. 202210022225.1 (CN), filed on Jan. 10, 2022.
Prior Publication US 2023/0224443 A1, Jul. 13, 2023
Int. Cl. H04N 9/31 (2006.01)
CPC H04N 9/3185 (2013.01) [H04N 9/3182 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A projection position guiding method, adapted to a projection system, the projection system comprising a projection target, an image capturing device and a projector, and the projection position guiding method comprising:
projecting a projection content to the projection target through the projector to generate a projection image, wherein the projection content comprises a plurality of positioning grid points arranged at intervals;
capturing the projection target by the image capturing device to generate a captured image, wherein the captured image comprises at least a part of the projection image; and
determining whether the plurality of positioning grid points satisfy a plurality of recognizable conditions according to the projection image in the captured image, wherein
when it is determined that the plurality of positioning grid points comprise at least one unrecognizable grid point that does not satisfy at least one of the plurality of recognizable conditions, adjusting a color of the at least one unrecognizable grid point in the projection content,
wherein the step of adjusting the color of the at least one unrecognizable grid point in the projection content comprises:
adjusting the color of the at least one unrecognizable grid point in the projection content to a second color, wherein the second color is different from a first color of the plurality of positioning grid points, and
adjusting a color of at least one boundary grid point adjacent to the at least one unrecognizable grid point in the projection content to a third color, wherein the third color is different from the first color and the second color.