{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,16]],"date-time":"2026-06-16T12:55:18Z","timestamp":1781614518566,"version":"3.54.5"},"reference-count":35,"publisher":"Association for Computing Machinery (ACM)","issue":"1","license":[{"start":{"date-parts":[[2005,1,1]],"date-time":"2005-01-01T00:00:00Z","timestamp":1104537600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.acm.org\/publications\/policies\/copyright_policy#Background"}],"content-domain":{"domain":["dl.acm.org"],"crossmark-restriction":true},"short-container-title":["ACM Trans. Graph."],"published-print":{"date-parts":[[2005,1]]},"abstract":"<jats:p>Arguably, the most vexing problem remaining for multi-projector displays is that of photometric (brightness) seamlessness within and across different projectors. Researchers have strived for &lt;i&gt;strict photometric uniformity&lt;\/i&gt; that achieves identical response at every pixel of the display. However, this goal typically results in displays with severely compressed dynamic range and poor image quality.<\/jats:p>\n          <jats:p>In this article, we show that strict photometric uniformity is not a requirement for achieving photometric seamlessness. We introduce a general goal for photometric seamlessness by defining it as an optimization problem, balancing &lt;i&gt;perceptual uniformity&lt;\/i&gt; with &lt;i&gt;display quality&lt;\/i&gt;. Based on this goal, we present a new method to achieve &lt;i&gt;perceptually seamless high quality displays&lt;\/i&gt;. We first derive a model that describes the photometric response of projection-based displays. Then we estimate the model parameters and modify them using perception-driven criteria. Finally, we use the graphics hardware to reproject the image computed using the modified model parameters by manipulating only the projector inputs at interactive rates.<\/jats:p>\n          <jats:p>Our method has been successfully demonstrated on three different practical display systems at Argonne National Laboratory, made of 2 \u00d7 2 array of four projectors, 2 \u00d7 3 array of six, projectors, and 3 \u00d7 5 array of fifteen projectors. Our approach is efficient, automatic and scalable---requiring only a digital camera and a photometer. To the best of our knowledge, this is the first approach and system that addresses the photometric variation problem from a perceptual stand point and generates truly seamless displays with high dynamic range.<\/jats:p>","DOI":"10.1145\/1037957.1037964","type":"journal-article","created":{"date-parts":[[2005,1,26]],"date-time":"2005-01-26T16:35:53Z","timestamp":1106757353000},"page":"118-139","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":77,"title":["Perceptual photometric seamlessness in projection-based tiled displays"],"prefix":"10.1145","volume":"24","author":[{"given":"Aditi","family":"Majumder","sequence":"first","affiliation":[{"name":"University of California, Irvine, CA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rick","family":"Stevens","sequence":"additional","affiliation":[{"name":"University of Chicago, Argonne National Laboratory, Argonne, IL"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"320","published-online":{"date-parts":[[2005,1]]},"reference":[{"key":"e_1_2_1_1_1","unstructured":"Binns J. 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