Extraction of correspondences in color coded pattern for the 3D reconstruction using structured light

Abstract

This paper presents a methodology to extract correspondences on images of color patterns based on the De Bruijn sequence projected on static objects and surfaces with no specular highlights, decreasing in great number the problems with occlusions which appear with this pattern. The methodology aims to capture and process the image, the detection of changes in intensity between stripes of the pattern for each color channel R, G, B, a selective contextual algorithm and finally the comparison of neighbors to determine the similar regions. Experimental tests demonstrate that the proposed methodology identifies large number of correspondences in the images with a low error rate.