作者
Hui Lin, Jian Gao, Qing Mei, Yunbo He, Junxiu Liu, Xingjin Wang
发表日期
2016/3
期刊
Optics Express
卷号
24
期号
7
页码范围
7703-7718
出版商
OSA Publishing
简介
It is a challenge for any optical method to measure objects with a large range of reflectivity variation across the surface. Image saturation results in incorrect intensities in captured fringe pattern images, leading to phase and measurement errors. This paper presents a new adaptive digital fringe projection technique which avoids image saturation and has a high signal to noise ratio (SNR) in the three-dimensional (3-D) shape measurement of objects that has a large range of reflectivity variation across the surface. Compared to previous high dynamic range 3-D scan methods using many exposures and fringe pattern projections, which consumes a lot of time, the proposed technique uses only two preliminary steps of fringe pattern projection and image capture to generate the adapted fringe patterns, by adaptively adjusting the pixel-wise intensity of the projected fringe patterns based on the saturated pixels in the …
学术搜索中的文章
H Lin, J Gao, Q Mei, Y He, J Liu, X Wang - Optics express, 2016