像素
高动态范围
动态范围
光学
高动态范围成像
计算机视觉
人工智能
计算机科学
结构光三维扫描仪
极化(电化学)
物理
物理化学
化学
扫描仪
作者
Yonghong Wang,Qian Zhang,Hairong Yin,Huanqing Wang
出处
期刊:Optical Engineering
[SPIE - International Society for Optical Engineering]
日期:2021-08-25
卷期号:60 (08)
被引量:4
标识
DOI:10.1117/1.oe.60.8.084107
摘要
It is challenging to measure objects with a high dynamic range surface. We propose a three-dimensional measurement method of high dynamic surfaces based on multi-polarization fringe projection. The saturated pixels can be recognized to get the optimal exposure time by projecting a series of designed auxiliary patterns onto the surface of the object. It does not need to project multiple N-step phase-shifting fringe patterns for recognition, and it greatly improves the detection speed and efficiency. A multi-polarization camera captures full-resolution phase-shifting images with four polarization directions simultaneously. An appropriate polarization direction is selected by analyzing the per-pixel of auxiliary images captured by camera, and then optimal phase-shifting fringe images with high quality are obtained. The effectiveness and rapidness of this method are verified by the measurement experiments of different objects, and the method provides a new idea for rapid measurement.
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