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<span id="openzim-page-title" class="mw-page-title-main"><span class="mw-page-title-main">Analog image processing</span></span>
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</style><div role="note" class="hatnote navigation-not-searchable">Not to be confused with <a href="Digital_image_processing" title="Digital image processing">Digital image processing</a>.</div>
<p><b>Analog image processing</b> is the use of an <a href="Optical_computing" title="Optical computing">optical computer</a> to process physical, <a href="Image" title="Image">optical images</a><sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> formed by light waves coming from an object, as opposed to the <a href="Digital_image_processing" title="Digital image processing">digital image processing</a><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> and its use of <a href="Computer" title="Computer">digital computers</a> to process pixelated, <a href="Digital_image" title="Digital image">digital images</a>. Correspondingly, a range of digital image processing techniques possess direct physical analogs. For example, <a href="Fast_Fourier_transform" title="Fast Fourier transform">fast Fourier transform algorithms</a> are commonly implemented in digital <a href="Phase_correlation" title="Phase correlation">phase correlation</a> and other digital image processing techniques.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> These digital <a href="Fourier_transform" title="Fourier transform">Fourier transforms</a> can be considered to be the digitized approximation of methods utilizing <a href="Fourier_optics#Fourier_transforming_property_of_lenses" title="Fourier optics">Fourier transforming properties of an ideal lens</a>.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup>
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<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>
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</style><cite id="CITEREFMomeniRouhiFleury2022" class="citation journal cs1">Momeni, Ali; Rouhi, Kasra; Fleury, Romain (2022-01-01). <a rel="nofollow" class="external text" href="https://infoscience.epfl.ch/record/289300/files/1-s2.0-S0008622321009738-main.pdf">"Switchable and simultaneous spatiotemporal analog computing with computational graphene-based multilayers"</a> <span class="cs1-format">(PDF)</span>. <i>Carbon</i>. <b>186</b>: <span class="nowrap">599–</span>611. <a href="ArXiv_(identifier)" class="mw-redirect" title="ArXiv (identifier)">arXiv</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://arxiv.org/abs/2104.10801">2104.10801</a></span>. <a href="Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2022Carbo.186..599M">2022Carbo.186..599M</a>. <a href="Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.1016%2Fj.carbon.2021.10.001">10.1016/j.carbon.2021.10.001</a></span>. <a href="ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0008-6223">0008-6223</a>.</cite></span>
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<li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><cite id="CITEREFBurgerBurge2022" class="citation journal cs1">Burger, Wilhelm; Burge, Mark J. (2022). <span class="id-lock-subscription" title="Paid subscription required"><a rel="nofollow" class="external text" href="https://link.springer.com/book/10.1007/978-3-031-05744-1">"Digital Image Processing"</a></span>. <i>Texts in Computer Science</i>. <a href="Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1007%2F978-3-031-05744-1">10.1007/978-3-031-05744-1</a>. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>978-3-031-05743-4</bdi>. <a href="ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/1868-0941">1868-0941</a>.</cite></span>
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<li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><cite id="CITEREFPreibischSaalfeldTomancak2009" class="citation journal cs1">Preibisch, Stephan; Saalfeld, Stephan; Tomancak, Pavel (2009-04-03). <a rel="nofollow" class="external text" href="https://academic.oup.com/bioinformatics/article/25/11/1463/332497">"Globally optimal stitching of tiled 3D microscopic image acquisitions"</a>. <i>Bioinformatics</i>. <b>25</b> (11): <span class="nowrap">1463–</span>1465. <a href="Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1093%2Fbioinformatics%2Fbtp184">10.1093/bioinformatics/btp184</a>. <a href="ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/1367-4811">1367-4811</a>. <a href="PMC_(identifier)" class="mw-redirect" title="PMC (identifier)">PMC</a> <span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2682522">2682522</a></span>. <a href="PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/19346324">19346324</a>.</cite></span>
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<li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><cite id="CITEREFKyeremahLaGharbiYelleswarapu2022" class="citation journal cs1">Kyeremah, Charlotte; La, Jeffrey; Gharbi, Mohamed Amine; Yelleswarapu, Chandra S. (2022-03-01). <span class="id-lock-subscription" title="Paid subscription required"><a rel="nofollow" class="external text" href="https://linkinghub.elsevier.com/retrieve/pii/S0030399221007192">"Exploring different textures of a nematic liquid crystal for quantitative Fourier phase contrast microscopy"</a></span>. <i>Optics & Laser Technology</i>. <b>147</b>: 107631. <a href="Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2022OptLT.14707631K">2022OptLT.14707631K</a>. <a href="Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2Fj.optlastec.2021.107631">10.1016/j.optlastec.2021.107631</a>. <a href="ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0030-3992">0030-3992</a>.</cite></span>
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<li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><cite id="CITEREFLugt1964" class="citation journal cs1">Lugt, A.V. (April 1964). <a rel="nofollow" class="external text" href="https://dx.doi.org/10.1109/tit.1964.1053650">"Signal detection by complex spatial filtering"</a>. <i>IEEE Transactions on Information Theory</i>. <b>10</b> (2): <span class="nowrap">139–</span>145. <a href="Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1109%2Ftit.1964.1053650">10.1109/tit.1964.1053650</a>. <a href="Hdl_(identifier)" class="mw-redirect" title="Hdl (identifier)">hdl</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://hdl.handle.net/2027.42%2F8080">2027.42/8080</a></span>. <a href="ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0018-9448">0018-9448</a>.</cite></span>
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