Accurate estimation of camera response function forhigh dynamic range measurement

2021 ◽  
Author(s):  
Ji Li ◽  
Jingtian Guan ◽  
Yukun Wang ◽  
Xiaobo Chen ◽  
Juntong Xi
Keyword(s):  
Response Function ◽  
Dynamic Range ◽  
Accurate Estimation ◽  
Range Measurement ◽  
Camera Response Function

A Fast Calibration Method of Camera Response Function for High Dynamic Range Image

2013 ◽  
Vol 42 (6) ◽  
pp. 737-741 ◽  
Author(s):  
方华猛 FANG Hua-meng ◽  
易本顺 YI Ben-shun ◽  
甘良才 GAN Liang-cai ◽  
文闯 WEN Chuang ◽  
黄太奇 HUANG Tai-qi
Keyword(s):  
Response Function ◽  
Dynamic Range ◽  
High Dynamic Range ◽  
Calibration Method ◽  
Range Image ◽  
High Dynamic Range Image ◽  
High Dynamic ◽  
Camera Response Function

scholarly journals Optimizing the CMOS Sensor-Mode for Extreme Linear Dynamic Range MEMS-based CAOS Smart Camera Imaging

2020 ◽  
Vol 238 ◽  
pp. 12007
Author(s):  
Nabeel A. Riza ◽  
Nazim Ashraf ◽  
Mohsin Mazhar
Keyword(s):  
Response Function ◽  
Dynamic Range ◽  
Smart Camera ◽  
Linear Dynamic Range ◽  
Linear Dynamic ◽  
Camera Imaging ◽  
Cmos Sensor ◽  
Camera Response Function

Experimentally highlighted are the limitations & optimizations of the CMOS sensor-mode engaged for the CAOS smart camera. Demonstrated is an optimized method for finding the Camera Response Function (CRF) using a calibrated target.

On calibration of camera response function free from the impact of dynamic problem

2016 ◽  
Vol 24 (6) ◽  
pp. 1510-1519
Author(s):  
都 琳 DU Lin ◽  
孙华燕 SUN Hua-yan ◽  
张廷华 ZHANG Ting-hua ◽  
王 帅 WANG Shuai
Keyword(s):  
Response Function ◽  
Dynamic Problem ◽  
The Impact ◽  
Camera Response Function

scholarly journals Adaptive Binocular Fringe Dynamic Projection Method for High Dynamic Range Measurement

Sensors ◽  
2019 ◽  
Vol 19 (18) ◽  
pp. 4023 ◽  
Author(s):  
Changzhi Yu ◽  
Fang Ji ◽  
Junpeng Xue ◽  
Yajun Wang
Keyword(s):  
Projection Method ◽  
Dynamic Range ◽  
Three Dimensional ◽  
High Dynamic Range ◽  
Fringe Projection ◽  
Range Measurement ◽  
Optimal Projection ◽  
Three Dimensional Measurement ◽  
High Dynamic ◽  
Adaptively Adjusting

Three-dimensional measurement with fringe projection sensor has been commonly researched. However, the measurement accuracy and efficiency of most fringe projection sensors are still seriously affected by image saturation and the non-linear effects of the projector. In order to solve the challenge, in conjunction with the advantages of stereo vision technology and fringe projection technology, an adaptive binocular fringe dynamic projection method is proposed. The proposed method can avoid image saturation by adaptively adjusting the projection intensity. Firstly, the flowchart of the proposed method is explained. Then, an adaptive optimal projection intensity method based on multi-threshold segmentation is introduced to adjust the projection illumination. Finally, the mapping relationship of binocular saturation point and projection point is established by binocular transformation and left camera–projector mapping. Experiments demonstrate that the proposed method can achieve higher accuracy for high dynamic range measurement.

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