Technique for eliminating vertical parallax of multi-viewpoint stereo image

Abstract

The invention provides a technique for eliminating vertical parallax of multi-viewpoint stereo image. The technique comprises the steps of putting a reference flat plate with a rectangle pattern in a photographing scene, using a camera array to photograph the reference flat plate and calibrating four vertexes of the rectangle, calculating the coordinate mapping relationship of the same object point corresponding to different image photographing points one point by one point according to the four vertexes of the rectangle photographed by each camera, then moving the reference flat plate away and photographing other scenes by the camera array, rearranging the pixel of the image photographed by each camera according to the coordinate mapping relationship, so as to obtain the image of each viewpoint with vertical parallax eliminated. The technique is also used for multi-viewpoint free stereo display.

Description

1. Technical field [0001] The invention relates to stereo shooting technology and digital image processing technology. 2. Background technology [0002] The multi-viewpoint autostereoscopic display based on binocular parallax is an important stereoscopic display, which is formed by adding a slit grating or a cylindrical lens grating to a two-dimensional flat display. Its display content comes from images of the display scene captured from multiple directions. These images cannot have vertical parallax, so the cameras used to capture them are calibrated so that their optical axes are parallel and coplanar to each other. Because the traditional camera calibration technology is cumbersome and requires high adjustment accuracy, and to apply the image captured by the camera to a multi-view autostereoscopic display, multiple cameras need to be calibrated at the same time, which will increase the difficulty of calibration exponentially. Therefore, the vast majority of multi-view ...

AI Technical Summary

Problems solved by technology

Because the traditional camera calibration technology is cumbersome and requires high adjustment accuracy, and to apply the image captured by the camera to a multi-view autostereoscopic display, multiple cameras need to be calibrated at the same time, which will increase the difficulty of calibration exponentially

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