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Express"],"published-print":{"date-parts":[[2021,8,16]]},"abstract":"<jats:p>Snapshot microlens array microscopic hyperspectral imaging systems do not require a scanning process and obtain (<jats:italic>x<\/jats:italic>,<jats:italic>y<\/jats:italic>,<jats:italic>\u03bb<\/jats:italic>) three-dimensional data cubes in one shot. Currently, the three-dimensional spectra image data are interleaved on a charge-coupled device detector, which increases subsequent data processing difficulty. The optical design software cannot simulate actual engineering installation and adjustment results accurately and the tracking results cannot guide precise rapid online calibration of the snapshot microlens array microscopic hyperspectral imaging system. To solve these problems, we propose an accurate spectral image reconstruction model based on optical tracing, derive spatial dispersion equations for the prisms and gratings, establish an algorithm model for the correspondence between the microlens array\u2019s surface dispersion spectral distribution and its imaging position, and propose a three-dimensional spectral image reconstruction algorithm. Experimental results show that this algorithm\u2019s actual spectral calibration error is better than 0.2\u2005nm. This meets the image processing requirements of snapshot microlens array microscopic hyperspectral systems.<\/jats:p>","DOI":"10.1364\/oe.433498","type":"journal-article","created":{"date-parts":[[2021,7,21]],"date-time":"2021-07-21T15:30:09Z","timestamp":1626881409000},"page":"26713","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["Research on spectral reconstruction algorithm for snapshot microlens array micro-hyperspectral imaging system"],"prefix":"10.1364","volume":"29","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0038-8597","authenticated-orcid":true,"given":"Changben","family":"Yu","sequence":"first","affiliation":[{"name":"Chinese Academy of Sciences"},{"name":"University of Chinese Academy of Sciences"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jin","family":"Yang","sequence":"additional","affiliation":[{"name":"Chinese Academy of Sciences"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mingjia","family":"Wang","sequence":"additional","affiliation":[{"name":"Chinese Academy of Sciences"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ci","family":"Sun","sequence":"additional","affiliation":[{"name":"Chinese Academy of Sciences"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nan","family":"Song","sequence":"additional","affiliation":[{"name":"Chinese Academy of Sciences"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jicheng","family":"Cui","sequence":"additional","affiliation":[{"name":"Chinese Academy of Sciences"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2175-7750","authenticated-orcid":true,"given":"Shulong","family":"Feng","sequence":"additional","affiliation":[{"name":"Chinese Academy of Sciences"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2021,8,3]]},"reference":[{"key":"oe-29-17-26713-R1","doi-asserted-by":"publisher","first-page":"1060111","DOI":"10.1117\/1.JBO.17.10.106011","volume":"17","author":"Maeder","year":"2012","journal-title":"J. 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