结构光三维扫描仪
光学
投影(关系代数)
校准
二进制数
相(物质)
系列(地层学)
理想(伦理)
补偿(心理学)
滤波器(信号处理)
傅里叶级数
傅里叶变换
计算机科学
作者
Jingcheng Hu,Shaohui Zhang,Yao Hu,Qun Hao
出处
期刊:Applied Optics
[The Optical Society]
日期:2021-11-10
卷期号:60 (32): 10047-10054
摘要
The binary defocus fringe projection is a widely adopted way to increase the speed of fringe projection profilemotry. However, the projected patterns may deviate from ideal ones at some depths. We propose a theoretical model and a corresponding compensation method to explain and calibrate the phase error of defocus-projected patterns. We first low-pass filter the projected patterns at different depths to obtain corresponding ideal ones. Then, we calibrate the model coefficients based on the errors between the original and ideal fringe patterns. The calibrated phase error model can be used to compensate the phase error at arbitrary depths within the calibration volume. Experiments are conducted to verify the feasibility and performance of the proposed method.
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