Seeing and sensing temporal variations in natural daylight

Autor: Ruben, Pastilha, Anya, Hurlbert

Publikováno v: Progress in brain research. 273(1)

Natural illumination is a mixture of sunlight and skylight, modified by interactions with atmospheric particles and interreflections between physical surfaces. Unlike traditional artificial light sources, natural illumination is spectrally dynamic, c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::e0d8afad8e7b8e6b3705f53b076a793f
https://pubmed.ncbi.nlm.nih.gov/35940720

Describing natural colors with Munsell and NCS color systems

Autor: Ana I. Rodrigues, Ruben Pastilha, João M. M. Linhares, Sérgio M. C. Nascimento

Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP

The Munsell Color System and the Natural Color System are widely used but they have some limitations due to the manufacturing process and sampling choices. To estimate quantitatively these limitations we compared the colors of natural scenes with the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::afd382319e7f7a4b6c658ef1ff309882
https://doi.org/10.1002/col.22355

Chromatic changes in paintings of Adriano de Sousa Lopes after the removal of aged varnish

Autor: Liliana Querido Cardeira, Sérgio M. C. Nascimento, Ruben Pastilha, Ana Bailão, João M. M. Linhares

Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Conservar Património; Vol. 34 (2020): II Colloquium Investigations in Heritage Conservation; 50-64
Conservar Património; vol. 34 (2020): II Colóquio Investigações em Conservação do Património; 50-64

The ability to digitally remove the varnish layer during the pre-conservation diagnostic of a painting, without any chemical or physical intervention, could be an advantage because it enables the prediction of the outcome of the cleaning procedure of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15d4c43744d1cb1b2d080161422eb650
https://hdl.handle.net/10400.14/31467

Neighboring chromaticity influences how white a surface looks

Autor: Eli Brenner, Ruben Pastilha, Sérgio M. C. Nascimento

Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Nascimento, S M C, Pastilha, R C & Brenner, E 2019, ' Neighboring chromaticity influences how white a surface looks ', Vision research, vol. 165, pp. 31-35 . https://doi.org/10.1016/j.visres.2019.09.007
Vision research, 165, 31-35. Elsevier

To identify surface properties independently of the illumination the visual system must make assumptions about the statistics of scenes and their illumination. Are assumptions about the intensity of the illumination independent of assumptions about i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5121070ccf9cf949882b1c9fe4ace7fb

Temporal dynamics of daylight perception: Detection thresholds

Autor: Anya Hurlbert, Naomi Gross, Gaurav Gupta, Ruben Pastilha

Publikováno v: Journal of Vision

Temporal changes in illumination are ubiquitous; natural light, for example, varies in color temperature and irradiance throughout the day. Yet little is known about human sensitivity to temporal changes in illumination spectra. Here, we aimed to det

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5f7a47e9a593066b00fa2b3e56059ded
https://doi.org/10.1167/jov.20.13.18