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Recently, computational imaging, which avoids direct imaging, has been investigated for its potential in the visible field. However, it has been rarely studied in the infrared domain, as it suffers from inconsistency in spectral response and reconstruction. To address this, we propose a novel mid-wave infrared snapshot compressive spectral imager (MWIR-SCSI). This design scheme provides a high degree of randomness in the measurement projection, which is more conducive to the reconstruction of image information and makes spectral correction implementable. Furthermore, leveraging the explainability of model-based algorithms and the high efficiency of deep learning algorithms, we designed a deep infrared denoising prior plug-in for the optimization algorithm to perform in terms of both imaging quality and reconstruction speed. The system calibration obtains 111 real coded masks, filling the gap between theory and practice. Experimental results on simulation datasets and real infrared scenarios prove the efficacy of the designed deep infrared denoising prior plug-in and the proposed acquisition architecture that acquires mid-infrared spectral images of 640 pixels \u00d7 512 pixels \u00d7 111 spectral channels at an acquisition frame rate of 50 fps.<\/jats:p>","DOI":"10.3390\/rs15010280","type":"journal-article","created":{"date-parts":[[2023,1,4]],"date-time":"2023-01-04T02:15:42Z","timestamp":1672798542000},"page":"280","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Mid-Wave Infrared Snapshot Compressive Spectral Imager with Deep Infrared Denoising Prior"],"prefix":"10.3390","volume":"15","author":[{"given":"Shuowen","family":"Yang","sequence":"first","affiliation":[{"name":"School of Optoelectronic Engineering, Xidian University, Xi\u2019an 710071, China"}]},{"given":"Hanlin","family":"Qin","sequence":"additional","affiliation":[{"name":"School of Optoelectronic Engineering, Xidian University, Xi\u2019an 710071, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4184-1300","authenticated-orcid":false,"given":"Xiang","family":"Yan","sequence":"additional","affiliation":[{"name":"School of Optoelectronic Engineering, Xidian University, Xi\u2019an 710071, China"}]},{"given":"Shuai","family":"Yuan","sequence":"additional","affiliation":[{"name":"School of Optoelectronic Engineering, Xidian University, Xi\u2019an 710071, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3493-5117","authenticated-orcid":false,"given":"Qingjie","family":"Zeng","sequence":"additional","affiliation":[{"name":"Xi\u2019an Institute of Modern Control Technology, Xi\u2019an 710065, China"}]}],"member":"1968","published-online":{"date-parts":[[2023,1,3]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"3176","DOI":"10.1364\/AO.20.003176","article-title":"Broadband reflectance and emissivity of specular and rough water surfaces","volume":"20","author":"Sidran","year":"1981","journal-title":"Appl. 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