标题：High dynamic range imaging for fringe projection profilometry with single-shot raw data of the color camera
作者：Yin, Yongkai; Cai, Zewei; Jiang, Hao; Meng, Xiangfeng; Xi, Jiangtao; Peng, Xiang
作者机构：[Yin, Yongkai; Meng, Xiangfeng] Shandong Univ, Sch Informat Sci & Engn, Dept Opt, Shandong Prov Key Lab Laser Technol & Applicat, Jinan 250100, People 更多
会议名称：1st International Symposium on 3D Imaging, Metrology, and Data Security (3DIM-DS)
来源：OPTICS AND LASERS IN ENGINEERING
关键词：Fringe projection profilometry; High dynamic range imaging (HDRI); Shiny; surface; High reflectance; Single-shot; Attenuation ratio calibration
摘要：It is a challenging issue to get satisfied results in terms of 3D imaging for shiny surface with fringe projection profilometry (FPP), as the wide variation of surface reflectance for shiny surface will lead to bad exposure, which requires the high dynamic range imaging (HDRI) technique. HDRI with monochromatic illumination and single-shot raw data of the color camera is presented in this paper. From the single-shot raw data, 4 monochrome sub-images corresponding to R, G, G and B channels can be separated respectively. After the attenuation ratios between R&G, G&B channels are calibrated, an image with higher dynamic range can be synthesized with the 4 sub-images, which can help to avoid the impact of bad exposure and improve the accuracy of phase calculation. Experiments demonstrate the validity of proposed method for shiny surface. (C) 2016 Elsevier Ltd. All rights reserved.