Patent ID: 11950028
Assignee: SEIKO EPSON CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method of controlling a projector comprising:
projecting a correction image having a rectangular shape on a projection surface from a projector, the rectangular shape having four vertexes at different distances from a projection lens of the projector when projected on the projection surface, the correction image including
a first side which is one of two sides of the correction image forming a vertex located farthest from the projection lens out of the four vertexes of the correction image, and
correction points arranged on the first side, a number of the correction points arranged on the first side being larger than a number of correction points arranged on a second side that is different from the two sides and that does not form the vertex located farthest from the projection lens;

receiving an operation of moving a first correction point included in the correction points arranged on the first side; and
projecting an output image obtained by applying a distortion correction based on the operation to an input image on the projection surface.