Projector projection distortion correction method, device and projector

Abstract

The invention discloses a projector projection distortion correction method, device and projector. The method of the present invention includes: using an optical-mechanical lens to project a standard grid image on the projection surface, and using a camera to capture the projection surface to obtain a projected point cloud image; according to the pixel point correspondence between the standard grid image and the projected point cloud image and a three-dimensional projection model to obtain the three-dimensional coordinates of the grid points on the projection surface based on the optical-mechanical lens coordinate system; using the three-dimensional coordinates of the grid points on the projection surface to obtain the reference projection plane and the projection points of the grid points on the projection surface on the reference projection plane, And obtain the texture sampling coordinates corresponding to each pixel of the grating pixel plane; use the texture sampling coordinates to perform texture mapping on the image to be projected, and output the texture-mapped image to the grating pixel plane for projection. The technical proposal of the present invention enables the image projected by the projector onto the non-flat projection surface to show the effect of no distortion.

Description

technical field [0001] The invention relates to a projector projection distortion correction method, device and projector. Background technique [0002] With the maturity of short-focus optical machine technology and the sharp drop in cost, the application of smart projectors in homes is increasing. In order to meet the requirements of home users for high-quality viewing experience, the image quality of smart projectors has been rapidly improved in terms of resolution, brightness and color. However, in a common home environment, due to cost considerations, people generally do not use a special projection screen as a projection surface, but only use an ordinary home wall as a projection surface. As for the projection surface, the quality of this wall surface is usually not ideal, and there are problems such as uneven wall surface, low reflection coefficient and non-directional reflection. The low reflection coefficient and non-directionality can be solved simply by increasi...

AI Technical Summary

Problems solved by technology

This solution has disadvantages such as low quality of mobile phone capture pictures, uncontrollable user shooting environment and cumbersome operation, and cannot provide a satisfactory user experience.

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