Design and evaluation of a light-field multi-wavelength pyrometer

This letter describes the design and implementation of a multi-wavelength light-field pyrometer, where six-channel radiation images were captured with one CMOS sensor. Such capability is achieved by placing a 2 x 3 filter array in front of the main lens of an unfocused light-field camera, such that discrete wavelength and radiation intensity can be simultaneously recorded. It demonstrates that through black-body furnace experiments, how multi-channel radiation images can be extracted from one raw light-field multispectral image, and how accurate 2D temperature distribution can be recovered by optimization algorithms. Published under an exclusive license by AIP Publishing.

Automated summary

This letter discusses the design and implementation of a multi-wavelength light-field pyrometer, which utilizes a CMOS sensor to capture six-channel radiation images. By placing a filter array in front of the main lens, discrete wavelength and radiation intensity can be simultaneously recorded. Experimental results demonstrate the extraction of multi-channel radiation images from a raw light-field multispectral image, and the accurate recovery of a 2D temperature distribution using optimization algorithms.