基于双色反射模型的彩色结构光颜色识别的研究
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摘要
为了快速准确地识别出彩色结构光系统中的投射光颜色信息,该文提出了基于双色反射模型的投射光颜色识别算法.首先通过对数码相机和投影设备进行色度标定,以消除两者之间的耦合性差异;接着通过估计物体三颜色通道光谱反射率以及分离镜面反射成分和漫反射成分,来修正物体本身颜色和镜面反射对投射光源颜色的影响.实验结果表明,该文提出的投射光颜色识别算法对于双色反射模型条件下的彩色结构光颜色识别具有鲁棒性高、计算速度快、识别准确度高等优点.
In order to identify projection light color information of the color structured light system rapidly and accurately,aprojection light color correction algorithm based on color reflection model is proposed in this paper.Firstly,the two coupling difference is eliminated by chromaticity calibration of projector and camera.Then,the effect on projection light color caused by the color of the object surface and height light is revised by estimating three-channel spectral reflectance of the object while separating specular component and diffuse component.The experiment result shows that the proposed projection light color correction algorithm for color recognition of color structured light with color reflection model has some advantages,such as high robustness,fast calculation and high recognition accuracy.
In order to identify projection light color information of the color structured light system rapidly and accurately,aprojection light color correction algorithm based on color reflection model is proposed in this paper.Firstly,the two coupling difference is eliminated by chromaticity calibration of projector and camera.Then,the effect on projection light color caused by the color of the object surface and height light is revised by estimating three-channel spectral reflectance of the object while separating specular component and diffuse component.The experiment result shows that the proposed projection light color correction algorithm for color recognition of color structured light with color reflection model has some advantages,such as high robustness,fast calculation and high recognition accuracy.
引文
[1]Salvi J.Pattern codification strategies in structured light systems.Pattern Recognition,2004,37(4):827-849
[2]Zhang L.Rapid shape acquisition using color structured light and multi-pass dynamic programming//Proceedings of the 1st International Symposium 3DData Processing,Visualization,and Transmission.Padova,Italy,2002:24-36
[3]Liu Wei-Yi.Color-coded grating projection of 3D contour technique for color separation.Acta Optica Sinica,2001,21(4):454-458(in Chinese)(刘维一.彩色编码投影光栅三维轮廓术中分色问题的研究.光学学报,2001,21(4):454-458)
[4]Sato T.Multispectral pattern projection range finder//Proceedings of the Conference on Three-Dimensional Image Capture and Application II.San Jose,CA,1999:28-37
[5]Pan J.Color-coded binary fringe projection technique for 3-D shape measurement.Optical Engineering,2005,44(2):023606
[6]Wegiel M G.Fast 3Dshape measurement based on color structure light projection.Optical metrology for Arts and Multimedia,2003,51(4):112-129
[7]Tajima J.Illumination chromaticity estimation based on dichromatic reflection model and imperfect segmentation//Proceedings of the 2nd International Computation Color Imaging Workshop.Saint Etienne,France,2009:51-61
[8]Caspi D.Range imaging with adaptive color structured light.Pattern Analysis and Machine Intelligence,1998,20(5):470-480
[9]Cai Qing-Yuan.The recovery of reflectance properties of 3D object surface[M.S.dissertation].Zhejiang University,Hangzhou,2010(in Chinese)(蔡清源.三维物体表面的反射特性恢复[硕士学位论文].浙江大学,杭州,2010)
[10]Shen Hui-Liang.Estimation of spectral reflectance using color scanner.Spectroscopy and Spectral Analysis,2007,27(11):2160-2163(in Chinese)(沈会良.彩色扫描仪的光谱反射率估计方法.光谱学与光谱分析,2007,27(11):2160-2163)
[11]Yang Ping,Liao Ning-Fang,Song Hong.Research on reconstruction of spectral reflectivity based on color digital camera.Spectroscopy and Spectral Analysis,2009,29(5):1176-1180(in Chinese)(杨萍,廖宁放,宋宏.基于彩色数字相机的光谱反射率重建方法研究.光谱学与光谱分析,2009,29(5):1176-1180)
[12]Tan R T,Ikeuchi K.Separating reflection components of textured surfaces using a single image.The IEEE Transactions on Pattern Analysis and Machine Intelligence,2005,27(2):178-193
[2]Zhang L.Rapid shape acquisition using color structured light and multi-pass dynamic programming//Proceedings of the 1st International Symposium 3DData Processing,Visualization,and Transmission.Padova,Italy,2002:24-36
[3]Liu Wei-Yi.Color-coded grating projection of 3D contour technique for color separation.Acta Optica Sinica,2001,21(4):454-458(in Chinese)(刘维一.彩色编码投影光栅三维轮廓术中分色问题的研究.光学学报,2001,21(4):454-458)
[4]Sato T.Multispectral pattern projection range finder//Proceedings of the Conference on Three-Dimensional Image Capture and Application II.San Jose,CA,1999:28-37
[5]Pan J.Color-coded binary fringe projection technique for 3-D shape measurement.Optical Engineering,2005,44(2):023606
[6]Wegiel M G.Fast 3Dshape measurement based on color structure light projection.Optical metrology for Arts and Multimedia,2003,51(4):112-129
[7]Tajima J.Illumination chromaticity estimation based on dichromatic reflection model and imperfect segmentation//Proceedings of the 2nd International Computation Color Imaging Workshop.Saint Etienne,France,2009:51-61
[8]Caspi D.Range imaging with adaptive color structured light.Pattern Analysis and Machine Intelligence,1998,20(5):470-480
[9]Cai Qing-Yuan.The recovery of reflectance properties of 3D object surface[M.S.dissertation].Zhejiang University,Hangzhou,2010(in Chinese)(蔡清源.三维物体表面的反射特性恢复[硕士学位论文].浙江大学,杭州,2010)
[10]Shen Hui-Liang.Estimation of spectral reflectance using color scanner.Spectroscopy and Spectral Analysis,2007,27(11):2160-2163(in Chinese)(沈会良.彩色扫描仪的光谱反射率估计方法.光谱学与光谱分析,2007,27(11):2160-2163)
[11]Yang Ping,Liao Ning-Fang,Song Hong.Research on reconstruction of spectral reflectivity based on color digital camera.Spectroscopy and Spectral Analysis,2009,29(5):1176-1180(in Chinese)(杨萍,廖宁放,宋宏.基于彩色数字相机的光谱反射率重建方法研究.光谱学与光谱分析,2009,29(5):1176-1180)
[12]Tan R T,Ikeuchi K.Separating reflection components of textured surfaces using a single image.The IEEE Transactions on Pattern Analysis and Machine Intelligence,2005,27(2):178-193