Recovering camera response function for structural light reconstruction

Haihua Cui; Zhaojie Li; Xiaodi Zhang; Wei Tian; Xiaosheng Cheng; Wenhe Liao

doi:10.1117/12.2501361

2 November 2018 Recovering camera response function for structural light reconstruction

Haihua Cui, Zhaojie Li, Xiaodi Zhang, Wei Tian, Xiaosheng Cheng, Wenhe Liao

Author Affiliations +

Proceedings Volume 10819, Optical Metrology and Inspection for Industrial Applications V; 108191T (2018) https://doi.org/10.1117/12.2501361
Event: SPIE/COS Photonics Asia, 2018, Beijing, China

Abstract

This article presents an algorithm to avoid camera overexposure or underexposure by calculating and analyzing the camera response function. First, the range of intensity value and time is set to ensure that the intensity value of each image pixel is within the measurement range when the camera's exposure time is within the time range. Then, the reference image which has the maximum number of pixel intensity values within the intensity value range is selected. Third, the camera response function will be calculated based on the variation of the reference point intensity value with the exposure time. Finally, the whole exposure times will be recovered based on the computed response function, and used in the process of structured light measurement. The experimental results verify the performance and feasibility of the proposed method.

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Haihua Cui, Zhaojie Li, Xiaodi Zhang, Wei Tian, Xiaosheng Cheng, and Wenhe Liao "Recovering camera response function for structural light reconstruction", Proc. SPIE 10819, Optical Metrology and Inspection for Industrial Applications V, 108191T (2 November 2018); https://doi.org/10.1117/12.2501361

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KEYWORDS

Cameras

Optical testing

Reflectivity

Structured light

Image fusion

3D image reconstruction

3D metrology

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