Study on Noise Correction Algorithm of Infrared Emissivity of Rock under Uniaxial Compression

Dongping Shi, Jinmiao Wang () and Lichun Xiong
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Dongping Shi: School of Environment and Resources, Xiangtan University, Xiangtan 411105, China
Jinmiao Wang: School of Environment and Resources, Xiangtan University, Xiangtan 411105, China
Lichun Xiong: Hunan Red Solar Photoelectricity Science and Technology Co., Ltd., Changsha 410002, China

Sustainability, 2022, vol. 14, issue 19, 1-14

Abstract: In the process of uniaxial loading of rocks, the original temperature information of infrared radiation is easily submerged in the noise signal, which leads to distortion of the obtained infrared radiation response information. In this paper, we propose a multi-band pseudo-emissivity denoising algorithm. Based on the basic theory of infrared radiation, by separating the infrared temperature measurement from the emissivity of the measured object, we constructed an infrared multi-band temperature measurement vector group that does not involve the emissivity to reduce the noise interference caused by the infrared temperature measurement results and the emissivity. Under a loading experiment of rock under uniaxial compression, the change of infrared radiation (IR) characteristics with loading was observed. The research results show that the multi-band pseudo-emissivity algorithm could effectively denoise infrared images and, using the denoised rock surface MIRT, AIRT and IRV as indicators, the characteristics of infrared radiation change in the process of uniaxial compression loading and fracturing of real rocks were analyzed.

Keywords: rock mechanics; infrared radiation; denoising algorithm; emissivity (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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