{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,5]],"date-time":"2026-02-05T23:45:57Z","timestamp":1770335157833,"version":"3.49.0"},"reference-count":17,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2012,5,3]],"date-time":"2012-05-03T00:00:00Z","timestamp":1336003200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>In this study, a camera to infrared diode (IRED) distance estimation problem was analyzed. The main objective was to define an alternative to measures depth only using the information extracted from pixel grey levels of the IRED image to estimate the distance between the camera and the IRED. In this paper, the standard deviation of the pixel grey level in the region of interest containing the IRED image is proposed as an empirical parameter to define a model for estimating camera to emitter distance. This model includes the camera exposure time, IRED radiant intensity and the distance between the camera and the IRED. An expression for the standard deviation model related to these magnitudes was also derived and calibrated using different images taken under different conditions. From this analysis, we determined the optimum parameters to ensure the best accuracy provided by this alternative. Once the model calibration had been carried out, a differential method to estimate the distance between the camera and the IRED was defined and applied, considering that the camera was aligned with the IRED. The results indicate that this method represents a useful alternative for determining the depth information.<\/jats:p>","DOI":"10.3390\/s120505687","type":"journal-article","created":{"date-parts":[[2012,5,3]],"date-time":"2012-05-03T11:02:37Z","timestamp":1336042957000},"page":"5687-5704","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Using the Standard Deviation of a Region of Interest in an Image to Estimate Camera to Emitter Distance"],"prefix":"10.3390","volume":"12","author":[{"given":"Angel E.","family":"Cano-Garc\u00eda","sequence":"first","affiliation":[{"name":"Telecommunication Department, University of Oriente, Av. de las Am\u00e9ricas, SN, Santiago de Cuba 90100, Cuba"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5048-7134","authenticated-orcid":false,"given":"Jos\u00e9 Luis","family":"L\u00e1zaro","sequence":"additional","affiliation":[{"name":"Electronics Department, University of Alcal\u00e1, Superior Polytechnic School, University Campus, Alcal\u00e1 de Henares 28871, Madrid, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Arturo","family":"Infante","sequence":"additional","affiliation":[{"name":"Telecommunication Department, University of Oriente, Av. de las Am\u00e9ricas, SN, Santiago de Cuba 90100, Cuba"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pedro","family":"Fern\u00e1ndez","sequence":"additional","affiliation":[{"name":"Electronics Department, University of Alcal\u00e1, Superior Polytechnic School, University Campus, Alcal\u00e1 de Henares 28871, Madrid, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yamilet","family":"Pompa-Chac\u00f3n","sequence":"additional","affiliation":[{"name":"Telecommunication Department, University of Oriente, Av. de las Am\u00e9ricas, SN, Santiago de Cuba 90100, Cuba"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Felipe","family":"Espinoza","sequence":"additional","affiliation":[{"name":"Electronics Department, University of Alcal\u00e1, Superior Polytechnic School, University Campus, Alcal\u00e1 de Henares 28871, Madrid, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2012,5,3]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Hartley, R., and Zisserman, A. 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Basler A620f, User's Manual, Interactive Frontiers."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/12\/5\/5687\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T21:50:05Z","timestamp":1760219405000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/12\/5\/5687"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2012,5,3]]},"references-count":17,"journal-issue":{"issue":"5","published-online":{"date-parts":[[2012,5]]}},"alternative-id":["s120505687"],"URL":"https:\/\/doi.org\/10.3390\/s120505687","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2012,5,3]]}}}