Compressive sensing-based infrared image super-resolution method for rapid NDT of CFRP components

Xianyu Wu; Bin Zhou; Feng Huang; Peng Lin; Rongjin Cao

doi:10.1117/12.2616074

15 February 2022 Compressive sensing-based infrared image super-resolution method for rapid NDT of CFRP components

Xianyu Wu, Bin Zhou, Feng Huang, Peng Lin, Rongjin Cao

Proceedings Volume 12166, Seventh Asia Pacific Conference on Optics Manufacture and 2021 International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2021); 121662Y (2022) https://doi.org/10.1117/12.2616074
Event: Seventh Asia Pacific Conference on Optics Manufacture and 2021 International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2021), 2021, Hong Kong, Hong Kong

Abstract

In the field of non-destructive testing (NDT), low-cost uncooled infrared (IR) sensors cannot generate high-speed thermography detection results with low levels of noise and high sensitivity. Hence, this paper proposes a compressive sensing-based postprocessing method for the results of uncooled IR sensors to obtain high-quality and super-resolution NDT imaging results. Super-resolution IR images are generated using low-resolution IR images and sparse dictionaries generated from randomly sampled raw patches of training images. Super-resolution IR images and pulsed phase thermography (PPT) are combined to improve the NDT results for carbon fiber-reinforced polymer (CFRP) specimens with artificial defects engraved on them. The results of the PPT experiments show that the compressive sensing-based super-resolution algorithm can be used to double the resolution of PPT phase images. The reconstructed PPT phase images further show that the proposed method can produce sharp defect edges while preserving the original texture, which will enable the use of uncooled IR sensors in a wider range of NDT applications.

Citation Download Citation

Xianyu Wu, Bin Zhou, Feng Huang, Peng Lin, and Rongjin Cao "Compressive sensing-based infrared image super-resolution method for rapid NDT of CFRP components", Proc. SPIE 12166, Seventh Asia Pacific Conference on Optics Manufacture and 2021 International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2021), 121662Y (15 February 2022); https://doi.org/10.1117/12.2616074

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KEYWORDS

Super resolution

Infrared imaging

Thermography

Nondestructive evaluation

Infrared cameras

Lawrencium

Image compression

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