Rapid exposure time estimation method for high-dynamic range surface

被引：1
|
作者：
Zhu, Zhenmin [1 ,6 ]
Dong, Yawen [1 ]
Xiang, Peng [1 ]
Sun, Xiang [1 ]
Zhou, Guoping [2 ]
Zheng, Weihua [3 ]
Chen, Guanghui [4 ,5 ]
Cai, Chenglong [3 ]
机构：
[1] East China Jiaotong Univ, State Key Lab Performance Monitoring Protecting Ra, Nanchang, Peoples R China
[2] East China Jiao Tong Univ, Sch Elect & Automation Engn, Nanchang, Peoples R China
[3] Jiangxi Water Investment Construction Grp Co Ltd, Nanchang 330200, Peoples R China
[4] Jiangxi Vocat & Tech Coll Commun, Dept Rd & Bridge Engn, Nanchang 330013, Peoples R China
[5] Jiangxi Fang Xing Technol Co Ltd, Nanchang, Peoples R China
[6] East China Jiaotong Univ, State Key Lab Performance Monitoring Protecting Ra, Nanchang, Peoples R China
来源：
OPTIK | 2023年 / 273卷
基金：
中国国家自然科学基金;
关键词：
Structured light projection; Exposure time; Reflectivity; High-dynamic range object; 3-DIMENSIONAL SHAPE MEASUREMENT; PROJECTION; SATURATION;
D O I：
10.1016/j.ijleo.2022.170467
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In structured light projection method, complex reflectivity distribution of high-dynamic range object surface is an important factor affecting the measurement accuracy. Image will be over-exposed and underexposed with the complex reflectivity distribution of high-dynamic range object surface. Therefore, this paper proposed a method to estimate the reflectivity and exposure time distribution by only projecting two images with one exposure time. Then the optimal exposure time of different reflectivity region can be calculated accurately. The experiment result shows that the image quality is improved in the calculated exposure time, and the surface is reconstructed. It proved the proposed method is accurate and rapid in high-dynamic range sur-face measurement.
引用
收藏
页数：8
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