| Autor: |
ZHANG Zhijun, WU Qingyang, DENG Yifeng, JIANG Yifan, ZHENG Guoliang, ZHAI Jianpang |
| Zdroj: |
Laser Technology; Jul2023, Vol. 47 Issue 4, p492-499, 8p |
| Abstrakt: |
In order to accurately recover the complete shape of the measured object with partial occlusion, a system for light field 3-D imaging based on multi-line structured light marking was proposed and a structured light field 3-D imaging method based on the Hough transform was proposed for the image processing problem in this system. The extracted sub-pixel fringe center coordinates were used to Hough transform, then the voting distribution in the Hough parameter space was analyzed, and adaptive range voting and adaptive window strategies were designed. Consequently, the parameters of multiple straight lines in the epipolar plane image can be accurately determined by the proposed method, which does not need to encode the fringe level. The experimental results show that the mean deviation and standard deviation of the fitted plane are 0.0096 mm and 0.0074 mm respectively. The complete shape of measured object is accurately obtained, which utilities the occlusion of different sub-aperture images is inconsistent in light field imaging. The result is helpful for solving the occlusion problem in the 3-D measurement process, and this work provides a reference for the measurement method to obtain complete and efficient 3-D data. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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