一种快速获取物体三维形貌和纹理信息的算法  

A Fast Algorithm for Obtaining 3D Shape and Texture Information of Objects

作　　者：孙士杰[1] 翟爱平[1] 曹益平[2] 

机构地区：[1]太原理工大学物理与光电工程学院(含测控研究所),山西太原030024 [2]四川大学光电科学技术系,四川成都610064

出　　处：《光学学报》2016年第3期91-96,共6页Acta Optica Sinica

基　　金：国家自然科学基金(11404237);山西省青年基金(2013021016-4)

摘　　要：提出了一种新的快速获取物体三维形貌和纹理信息的方法。利用数字投影仪将2幅彩色编码的正弦相移光栅图投影到被测物体表面,彩色相机捕捉经物体调制后的变形条纹图。提取RGB三基色,可获得包含物体高度信息及纹理信息的条纹图和背景光。对包含物体高度信息的条纹图用改进的2+1相移算法重构物体的三维形貌。物体纹理信息则通过对背景光进行彩色编码获得,利用纹理映射技术恢复物体纹理。计算机模拟和实验结果验证了该方法的有效性和可行性。A new method for obtaining 3D shape and texture information of objects is proposed. A digital projector is used to project the two encoding color phase-shifted grating projection onto the object surface. Extracting R, G, B three primary colors, fringe patterns and background light containing object height and texture information are obtained. The three-dimensional morphology of the object is reconstructed by using the improved 2＋1 phaseshift algorithm for fringe patterns containing the object height information. Object texture information is obtained by colour coding using the background light. Texture mapping technique is used to restore the texture of the object. Computer simulation and experimental results show the validity and feasibility of the proposed method.

关 键 词：测量 图像处理 2+1相移算法 纹理映射技术 相位轮廓术 纹理信息 

分 类 号：O436[机械工程—光学工程]