Print Email Facebook Twitter If painters give you lemons, squeeze the knowledge out of them Title If painters give you lemons, squeeze the knowledge out of them: A study on the visual perception of the translucent and juicy appearance of citrus fruits in paintings Author Di Cicco, F. (TU Delft Human Information Communication Design) Wijntjes, M.W.A. (TU Delft Human Information Communication Design) Pont, S.C. (TU Delft Human Information Communication Design) Date 2020 Abstract Citrus fruits are characterized by a juicy and translucent interior, important properties that drive material recognition and food acceptance. Yet, a thorough understanding of their visual perception is still missing. Using citrus fruits depicted in 17th-century paintings as stimuli, we ran three rating experiments. In Experiment 1, participants rated the perceived similarity in translucency or juiciness of the fruits. In Experiment 2, different groups of participants rated one image feature from a list obtained in a preliminary experiment. In Experiment 3, translucency and juiciness were rated. We constructed two-dimensional perceptual spaces for both material properties and fitted the ratings of the image features into the spaces to interpret them. "Highlights," "peeled side," "bumpiness," and "color saturation" fit the juiciness space best and were high for the highly juicy stimuli. "Peeled side," "intensity of light gradient," "highlights," and "color saturation" were the most salient features of the translucency space, being high for the highly translucent stimuli. The same image features were also indicated in a 17th-century painting manual for material depiction (Beurs, 1692; Beurs, in press). Altogether, we disclosed the expertise of painters with regard to material perception by identifying the image features that trigger a visual impression of juiciness and translucency in citrus fruits. Subject OA-Fund TU Delft To reference this document use: http://resolver.tudelft.nl/uuid:e8d93b0c-b008-4d90-ad9a-d38eb6a795f5 DOI https://doi.org/10.1167/jov.20.13.12 ISSN 1534-7362 Source Journal of vision, 20 (13) Part of collection Institutional Repository Document type journal article Rights © 2020 F. Di Cicco, M.W.A. Wijntjes, S.C. Pont Files PDF i1534_7362_20_13_12_16085 ... .33942.pdf 1.75 MB Close viewer /islandora/object/uuid:e8d93b0c-b008-4d90-ad9a-d38eb6a795f5/datastream/OBJ/view