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By integrating an optical-filter-array with a near-infrared light-field camera, the system enables single-shot acquisition of two-dimensional (2D) temperature distributions of high-temperature objects. Blackbody calibration experiments demonstrated the lower temperature threshold successfully extended to 573\u00a0K compared with that of visible multispectral light-field thermography, and errors were maintained below \u00b110\u00a0K over 573\u20131873\u00a0K. Furthermore, to address the effect of intense ambient radiation on accurate temperature calculation, a three-dimensional view-factor mapping (3D-VFM) method was proposed to quantify ambient radiation. By projecting three-dimensional geometric elements onto the pixel plane, the method derives a 2D view-factor distribution, enabling pixel-level correction of ambient radiation. The reliability of the proposed NIR-MSLF thermography and 3D-VFM method was validated through turbine blade film cooling experiments. Under various coolant flow rates, in conditions where ambient radiation may exceed the radiation from turbine blade itself, the NIR-MSLF thermography measured blade surface temperatures with deviations consistently within \u00b115\u00a0K when compared to the buried thermocouples.<\/jats:p>","DOI":"10.1063\/5.0313373","type":"journal-article","created":{"date-parts":[[2026,4,16]],"date-time":"2026-04-16T12:56:37Z","timestamp":1776344197000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":1,"title":["Near-infrared multispectral light-field thermography with ambient radiation correction for wide-range temperature measurement"],"prefix":"10.1063","volume":"97","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8524-0833","authenticated-orcid":false,"given":"Chunhui","family":"Yao","sequence":"first","affiliation":[{"name":"School of Mechanical Engineering, Shanghai Jiao Tong University 1 , 800 Dongchuan Road, Shanghai 200240,","place":["China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hua","family":"Fang","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Shanghai Jiao Tong University 1 , 800 Dongchuan Road, Shanghai 200240,","place":["China"]},{"name":"Aero-Engine Corporation of China, Hunan Aviation Powerplant Research Institute 2 , Zhuzhou 412000,","place":["China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fei","family":"Zeng","sequence":"additional","affiliation":[{"name":"Aero-Engine Corporation of China, Hunan Aviation Powerplant Research Institute 2 , Zhuzhou 412000,","place":["China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0005-1285-7743","authenticated-orcid":false,"given":"Yumeng","family":"Zhao","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Shanghai Jiao Tong University 1 , 800 Dongchuan Road, Shanghai 200240,","place":["China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1950-0729","authenticated-orcid":false,"given":"Shan","family":"Gao","sequence":"additional","affiliation":[{"name":"Key Laboratory of Advanced Marine Communication and Information Technology, Ministry of Industry and Information Technology, School of Information and Communication Engineering, Harbin Engineering University 3 , 150001 Harbin,","place":["China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7136-5160","authenticated-orcid":false,"given":"Liangliang","family":"Xu","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Shanghai Jiao Tong University 1 , 800 Dongchuan Road, Shanghai 200240,","place":["China"]},{"name":"State Key Laboratory of Clean and Efficient Turbomachinery Power Equipment 4 , Deyang 618000,","place":["China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3638-714X","authenticated-orcid":false,"given":"Fei","family":"Qi","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Shanghai Jiao Tong University 1 , 800 Dongchuan Road, Shanghai 200240,","place":["China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0048-4837","authenticated-orcid":false,"given":"Shengxian","family":"Shi","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Shanghai Jiao Tong University 1 , 800 Dongchuan Road, Shanghai 200240,","place":["China"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"317","published-online":{"date-parts":[[2026,4,16]]},"reference":[{"issue":"5\u20136","key":"2026041608563044500_c1","doi-asserted-by":"publisher","first-page":"2849","DOI":"10.1007\/s00170-022-08957-z","article-title":"Cutting temperature measurement and prediction in machining processes: Comprehensive review and future perspectives","volume":"120","year":"2022","journal-title":"Int. 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