作者：贺嘉伟1, 许新科1, 孔明1, 张波2, 王道档1, 郭天太1, 赵军1
作者单位：1. 中国计量大学计量测试工程学院，浙江 杭州 310018;
2. 上海市计量测试技术研究院，上海 201203
关键词：结构光;高光抑制;条纹投影;单色光;图像处理
摘要：
为解决小视场金属物体表面高光对于结构光三维测量的影响，在颜色空间转换法基础上进行针对性改进，提出一种适用于面结构光的金属表面高光抑制方法，利用偏振镜对单色偏振光的选通性消除大面积高光，并实现一种基于色度亮度分离与像素填补的强化消光算法消除残余高光点。利用对比实验分别对硬币、钥匙及金属塞尺三组被测物进行三维重构，高光点降低为原来的6.35%、4.48%、6.22%，表面该方法可有效抑制金属表面高光，大幅度减少高光点数，得到较好三维重构结果，效果优于颜色空间转换法，为消除金属表面高光对结构光三维测量的影响提供参考。
Research on highlight suppression method of metal surface based on surface structured light
HE Jiawei1, XU Xinke1, KONG Ming1, ZHANG Bo2, WANG Daodang1, GUO Tiantai1, ZHAO Jun1
1. College of Metrology and Measurement Engineering, China Jiliang University, Hangzhou 310018, China;
2. Shanghai Institute of Measurement and Testing Technology, Shanghai 201203, China
Abstract: In order to solve the influence of metal surface specular light on the 3D measurement of structured light in small visual field, based on the color space conversion method, a metal surface specular light suppression method suitable for surface structured light was proposed. The selectivity of the polarizer to monochromatic polarized light is used to eliminate large areas of specular highlights, and an enhanced extinction algorithm based on chromaticity brightness separation and pixel filling is implemented to eliminate residual specular highlights. Comparison experiments were used to reconstruct the three groups of measured objects, namely, coins, keys and metal feelers. The highlight points were reduced to about 6.35%, 4.48% and 6.22% of the original ones, which proved that this method could effectively suppress the metal surface highlights, greatly reduce the highlight points, and the result of 3D reconstruction is better than that of color space conversion method, which provides a reference for eliminating the influence of metal surface specular light on 3d measurement of structured light.
Keywords: structured light;highlight suppression;fringe projection;monochromatic light;image processing
2021, 47(10):12-18 收稿日期: 2020-12-24;收到修改稿日期: 2021-01-11
基金项目: 国家自然科学基金项目（52076200）；浙江省自然科学基金项目（LY19F050008）
作者简介: 贺嘉伟（1995-），男，浙江舟山市人，硕士研究生，专业方向为面结构光三维测量技术
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