{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,13]],"date-time":"2026-05-13T01:44:41Z","timestamp":1778636681343,"version":"3.51.4"},"reference-count":53,"publisher":"MDPI AG","issue":"21","license":[{"start":{"date-parts":[[2020,11,1]],"date-time":"2020-11-01T00:00:00Z","timestamp":1604188800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["UIDB\/04650\/2020"],"award-info":[{"award-number":["UIDB\/04650\/2020"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>RGB digital cameras (RGB) compress the spectral information into a trichromatic system capable of approximately representing the actual colors of objects. Although RGB digital cameras follow the same compression philosophy as the human eye (OBS), the spectral sensitivity is different. To what extent they provide the same chromatic experiences is still an open question, especially with complex images. We addressed this question by comparing the actual colors derived from spectral imaging with those obtained with RGB cameras. The data from hyperspectral imaging of 50 natural scenes and 89 paintings was used to estimate the chromatic differences between OBS and RGB. The corresponding color errors were estimated and analyzed in the color spaces CIELAB (using the color difference formulas \u0394E*ab and CIEDE2000), Jzazbz, and iCAM06. In CIELAB the most frequent error (using \u0394E*ab) found was 5 for both paintings and natural scenes, a similarity that held for the other spaces tested. In addition, the distribution of errors across the color space shows that the errors are small in the achromatic region and increase with saturation. Overall, the results indicate that the chromatic errors estimated are close to the acceptance error and therefore RGB digital cameras are able to produce quite realistic colors of complex scenarios.<\/jats:p>","DOI":"10.3390\/s20216242","type":"journal-article","created":{"date-parts":[[2020,11,1]],"date-time":"2020-11-01T20:05:25Z","timestamp":1604261125000},"page":"6242","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["How Good Are RGB Cameras Retrieving Colors of Natural Scenes and Paintings?\u2014A Study Based on Hyperspectral Imaging"],"prefix":"10.3390","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9197-5134","authenticated-orcid":false,"given":"Jo\u00e3o M. M.","family":"Linhares","sequence":"first","affiliation":[{"name":"Centre of Physics, Gualtar Campus, University of Minho, 4710-057 Braga, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5780-956X","authenticated-orcid":false,"given":"Jos\u00e9 A. R.","family":"Monteiro","sequence":"additional","affiliation":[{"name":"Centre of Physics, Gualtar Campus, University of Minho, 4710-057 Braga, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2652-0843","authenticated-orcid":false,"given":"Ana","family":"Bail\u00e3o","sequence":"additional","affiliation":[{"name":"Faculty of Fine Arts, University of Lisbon, 1649-004 Lisboa, Portugal"},{"name":"Research Center for Science and Technology of the Arts\u2014Portuguese Catholic University, Centre Regional of Porto, 4169-005 Porto, Portugal"}]},{"given":"Liliana","family":"Cardeira","sequence":"additional","affiliation":[{"name":"Faculty of Fine Arts, University of Lisbon, 1649-004 Lisboa, Portugal"}]},{"given":"Taisei","family":"Kondo","sequence":"additional","affiliation":[{"name":"Toyohashi University of Technology, Aichi 441-8580, Japan"}]},{"given":"Shigeki","family":"Nakauchi","sequence":"additional","affiliation":[{"name":"Toyohashi University of Technology, Aichi 441-8580, Japan"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1012-6048","authenticated-orcid":false,"given":"Marcello","family":"Picollo","sequence":"additional","affiliation":[{"name":"Istituto di Fisica Applicata \u201cNello Carrara\u201d del Consiglio Nazionale delle Ricerche (IFAC-CNR), Via Madonna del piano 10, 50019 Firenze, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8534-7465","authenticated-orcid":false,"given":"Costanza","family":"Cucci","sequence":"additional","affiliation":[{"name":"Istituto di Fisica Applicata \u201cNello Carrara\u201d del Consiglio Nazionale delle Ricerche (IFAC-CNR), Via Madonna del piano 10, 50019 Firenze, Italy"}]},{"given":"Andrea","family":"Casini","sequence":"additional","affiliation":[{"name":"Istituto di Fisica Applicata \u201cNello Carrara\u201d del Consiglio Nazionale delle Ricerche (IFAC-CNR), Via Madonna del piano 10, 50019 Firenze, Italy"}]},{"given":"Lorenzo","family":"Stefani","sequence":"additional","affiliation":[{"name":"Istituto di Fisica Applicata \u201cNello Carrara\u201d del Consiglio Nazionale delle Ricerche (IFAC-CNR), Via Madonna del piano 10, 50019 Firenze, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2503-9003","authenticated-orcid":false,"given":"S\u00e9rgio Miguel Cardoso","family":"Nascimento","sequence":"additional","affiliation":[{"name":"Centre of Physics, Gualtar Campus, University of Minho, 4710-057 Braga, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2020,11,1]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Tka\u010dik, G., Garrigan, P., Ratliff, C., Mil\u010dinski, G., Klein, J.M., Seyfarth, L.H., Sterling, P., Brainard, D.H., and Balasubramanian, V. 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