Encoding technology of an asymmetric combined structured light for 3D measurement

doi:10.1364/ao.400307

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	Encoding technology of an asymmetric combined structured light for 3D measurement
	Z. R. Cao and H. B. Jiang
	2020
发表期刊	Applied Optics
ISSN	1559-128X
卷号	59 期号:33 页码:10253-10263
摘要	Sinusoidal phase-shifting symmetrically combined with cyclic code is one of the most important encoding methods in the field of 3D measurement. Due to the modulation of the object surface and the influence of the noise of the image acquisition system, the periods of the cyclic code and the sinusoidal phase-shifting in the intensity image do not coincide completely, and they lead to large absolute phase decoding errors near the cycle boundaries, which are called cycle dislocation errors. In order to eliminate these errors in principle, the concept and method of region encoding for four-step sinusoidal phase-shifting are proposed, and the sinusoidal phase-shifting is combined with cyclic code asymmetrically. Under the premise that the cyclic code and the region code change at different times, the cycle dislocation error is reduced from one cycle of cyclic code to one pixel by the dual constraint of cyclic code and region code. The simulation measurement results of 3 ds max and the physical measurement results show that the asymmetric combination encoding method effectively eliminates the cycle dislocation errors; the maximum measurement error is reduced by an order of magnitude, and the root mean square measurement error is reduced by 70%. (C) 2020 Optical Society of America
DOI	10.1364/ao.400307
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收录类别	SCI ; EI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/64489
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Z. R. Cao and H. B. Jiang. Encoding technology of an asymmetric combined structured light for 3D measurement[J]. Applied Optics,2020,59(33):10253-10263.
APA	Z. R. Cao and H. B. Jiang.(2020).Encoding technology of an asymmetric combined structured light for 3D measurement.Applied Optics,59(33),10253-10263.
MLA	Z. R. Cao and H. B. Jiang."Encoding technology of an asymmetric combined structured light for 3D measurement".Applied Optics 59.33(2020):10253-10263.

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