Projector distortion correction method and device and projector

Abstract

The invention discloses a projector distortion correction method and device and a projector. The method comprises the following steps: projecting a standard grid image on a projection plane by using an optical machine lens, and shooting the projection plane by using a camera to obtain a projection point cloud image; according to the pixel point corresponding relation between the standard grid image and the projection point cloud image and the three-dimensional projection model, obtaining three-dimensional coordinates of grid points on the projection surface based on an optical-mechanical lenscoordinate system; obtaining a reference projection plane and projection points of the grid points on the projection plane on the reference projection plane by utilizing the three-dimensional coordinates of the grid points on the projection plane, and obtaining texture sampling coordinates corresponding to each pixel point of the grating pixel plane; and performing texture mapping on the image tobe projected by using the texture sampling coordinates, and outputting the image subjected to texture mapping to the grating pixel surface for projection. According to the technical scheme provided bythe invention, the image projected to the non-flat projection surface by the projector presents a non-distortion effect.

Description

technical field [0001] The invention relates to a projector 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 increasing the illu...

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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