关键词: 彩色结构光, De Bruijn编码, 聚类分析, 动态规划, 结构光解码

Abstract: A new method is proposed aiming at decoding De Bruijn color encoded structured light images with high precision.This method is composed of the central color stripe identification based on gradient analysis,the color classification based on clustering analysis and the feature point matching based on double-gradient and multi-pass dynamic programming.The method can be applied to avoid color interference effectively in the encoded structured light images containing parallel pixel lines with different colors.Moreover,by making full use of local neighborhood information,the method can match every feature point.Experimental results show that the proposed method effectively improves the decoding accuracy without assuming that the surface of the target object is monotonous or restricting its continuity,and also exhibits good robustness.

Key words: color structured light, De Bruijn coding, clustering analysis, dynamic programming, decoding structured light