A wavefront coding based binocular stereo vision three-dimensional reconstruction system and method

Abstract

The present application belongs to the technical field of computer vision, and specifically relates to a three-dimensional reconstruction system and method based on wavefront coding binocular stereo vision. The system comprises two encoding cameras, an adjusting frame and a computer processing system. The encoding camera comprises a free-form surface phase plate, an optical imaging system and an image sensor. The phase plate is placed at the entrance pupil position of the optical imaging system to form the encoding camera. The image sensor transmits the collected images to the computer processing system. The two encoding cameras are fixed on the adjusting frame, and the optical axes are parallel to each other. Two encoding images with parallax are collected for three-dimensional reconstruction of binocular stereo vision. The three-dimensional reconstruction method comprises the following steps: generation and collection of the encoding image; encoding camera calibration; extraction of the feature points of the decoding image; stereo matching; depth calculation; and three-dimensional space point reconstruction. The present application can expand the depth of field of the binocular camera, improve the depth measurement accuracy, and has wide application prospects in the fields of robot navigation, automatic driving and medical imaging.

Images