PROJECTOR KEYSTONE CORRECTION METHOD, APPARATUS, AND SYSTEM, AND READABLE STORAGE MEDIUM

摘要

Disclosed is a projector keystone correction method, including: obtaining first coordinate values of a plurality of position points on a projective plane through an RGBD (Red, Green, Blue-Depth) camera in a first coordinate system; determining second coordinate values of the position points according to a predetermined conversion relation and the first coordinate values in a second coordinate system; and using an included angle between a fitted plane obtained by fitting according to the second coordinate values of the plurality of position points and a coordinate plane of the second coordinate system to achieve keystone correction. In this application, since the RGBD camera can obtain information of relative position between each point in a projection area and the RGBD camera, in conjunction with the principle that relative attitude of a projection optical engine and the RGBD camera does not change, the projector is subjected to keystone correction. Thus, keystone correction of the projector can be accurately and efficiently achieved. Further disclosed are a projector keystone correction apparatus, a projector keystone correction system, and a computer-readable storage medium all having the above beneficial effects.