Abstract
Patternless binary coding strategies have been a challenge for ultra-fast 3D imaging with structured light. This Letter proposes a big codewords space division multiplexing binary coding method. From the third to the multiple order, a special spatial binary coding instead of the Gray code is created for the first time, to the best of our knowledge, to achieve an ultra-wide unambiguous range with only one auxiliary pattern. Advantageously, a connection domain segmentation technique with anomaly detection is proposed to achieve decoding of the fringe order, which cleverly avoids the misalignment problem. Additionally, a center of gravity method is applied to compensate for the codewords of the residual connected domain. The robustness and effectiveness of the proposed method for complex, isolated, and non-uniform reflectivity objects, as well as the ultra-fast 3D imaging of dynamic measurements, are experimentally verified.
© 2023 Optica Publishing Group
Full Article | PDF ArticleMore Like This
Jian Wang, Yiping Cao, Haitao Wu, and Zhimi Wei
Opt. Express 31(25) 41952-41966 (2023)
Yajun Wang and Song Zhang
Opt. Lett. 37(11) 2067-2069 (2012)
Xingyang Qi, Canlin Zhou, Yixiao Wang, and Hui Li
Appl. Opt. 62(4) 997-1008 (2023)