Abstract

This Letter proposes light-field multi-spectral radiation thermometry based on an unfocused light-field camera, which can simultaneously record directions and intensities of incident rays. In this method, the direction information of rays is substituted by radiation spectrums via placing an array of filters in front of camera main lens, such that the image sensor can simultaneously acquire spectrums and intensities of rays. By decoupling a raw multi-spectral light-field (MSLF) image and utilizing traditional multi-wavelength pyrometer algorithms, the scalar field of surface temperature distribution can be achieved. To verify the method, measurement errors of different temperature levels on several typical areas of MSLF images are analyzed. In addition, the validation experiment demonstrates that accurate surface temperature measurement can be achieved with a single lens, single monochromatic image sensor, and just one snapshot in the proposed method.

© 2020 Optical Society of America

Computational simulation of multi-wavelength light-field thermometry based on a chromatic meta-lens

Yulun He, Shengxian Shi, Chunhui Yao, Zhou Zhao, Mu Ku Chen, and Fei Qi
Opt. Lett. 49(4) 961-964 (2024)

High-precision multi-spectral radiation thermometry method based on the improved grey wolf optimization algorithm inversion

Zhijun Zhao, Danyuan Chen, Jingzheng Dong, and Haijing Zhou
Opt. Lett. 49(4) 957-960 (2024)

Snapshot hyperspectral light field imaging using image mapping spectrometry

Qi Cui, Jongchan Park, R. Theodore Smith, and Liang Gao
Opt. Lett. 45(3) 772-775 (2020)

Snapshot spectral polarimetric light field imaging using a single detector

Xiaobo Lv, Yiwei Li, Shuaishuai Zhu, Xinmin Guo, Jianlong Zhang, Jie Lin, and Peng Jin
Opt. Lett. 45(23) 6522-6525 (2020)

Chameleon swarm algorithm for data processing of a light-field multi-wavelength pyrometer

Chunhui Yao, Shengxian Shi, Hua Fang, and T. H. New
Opt. Express 31(12) 20200-20211 (2023)