Projector distortion correction method and device and projector

A projector and projection surface technology, which is applied in the field of projector and projector distortion correction, can solve the problems of cumbersome operation, uncontrollable user shooting environment, and inability to provide user experience, etc., and achieve the effect of eliminating screen distortion

Active Publication Date: 2019-08-09
LITTLE BIRD CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Projector distortion correction method and device and projector
  • Projector distortion correction method and device and projector
  • Projector distortion correction method and device and projector

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Embodiment Construction

[0021] An embodiment of the present invention provides a projector distortion correction method, using various methods of computer vision to obtain the surface distribution parameters of the projection surface, based on the distribution parameters to calculate the grid texture layout of the pre-corrected target image, and realize the input image through the GPU The texture mapping correction is used to obtain the pre-distorted projection image, so that the final image projected onto the non-flat projection surface presents an undistorted effect. Embodiments of the present invention also provide a corresponding device, a projector, and a computer-readable storage medium, which will be described in detail below.

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood, ...

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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...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06T7/80G06T15/04G06T17/00H04N9/31
CPCG06T17/00G06T15/04G06T7/80H04N9/3141H04N9/3179G06T2207/10028G06T5/80
Inventor 苏劲蔡志博
Owner LITTLE BIRD CO LTD
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