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Author (up) Olivier Penacchio; C. Alejandro Parraga; Maria Vanrell
Title Natural Scene Statistics account for Human Cones Ratios Type Journal Article
Year 2010 Publication Perception. ECVP Abstract Supplement Abbreviated Journal PER
Volume 39 Issue Pages 101
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Abstract In two previous experiments [Parraga et al, 2009 J. of Im. Sci. and Tech 53(3) 031106; Benavente et al,2009 Perception 38 ECVP Supplement, 36] the boundaries of basic colour categories were measured.
In the first experiment, samples were presented in isolation (ie on a dark background) and boundaries were measured using a yes/no paradigm. In the second, subjects adjusted the chromaticity of a sample presented on a random Mondrian background to find the boundary between pairs of adjacent colours.
Results from these experiments showed significant di erences but it was not possible to conclude whether this discrepancy was due to the absence/presence of a colourful background or to the di erences in the paradigms used. In this work, we settle this question by repeating the first experiment (ie samples presented on a dark background) using the second paradigm. A comparison of results shows that
although boundary locations are very similar, boundaries measured in context are significantly di erent(more di use) than those measured in isolation (confirmed by a Student’s t-test analysis on the subject’s answers statistical distributions). In addition, we completed the mapping of colour name space by measuring the boundaries between chromatic colours and the achromatic centre. With these results we completed our parametric fuzzy-sets model of colour naming space.
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Notes CIC Approved no
Call Number CAT @ cat @ PPV2010 Serial 1357
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Author (up) Ramon Baldrich; Maria Vanrell; Robert Benavente; Anna Salvatella
Title Color Enhancement based on perceptual sharpening Type Miscellaneous
Year 2003 Publication Proceedings of the IEEE International Conference on Image Processing Abbreviated Journal
Volume Issue Pages
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Address Barcelona
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Notes CIC Approved no
Call Number CAT @ cat @ BVB2003 Serial 370
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Author (up) Ramon Baldrich; Ricardo Toledo; Ernest Valveny; Maria Vanrell
Title Perceptual Colour Image Segmentation. Type Miscellaneous
Year 2002 Publication Proceeding of the Second IASTED International Conference Visualization, Imaging and Image Proceesing VIIP 2002: 145–150. Abbreviated Journal
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Notes DAG;CIC;ADAS Approved no
Call Number CAT @ cat @ BTV2002 Serial 290
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Author (up) Robert Benavente; C. Alejandro Parraga; Maria Vanrell
Title Colour categories boundaries are better defined in contextual conditions Type Journal Article
Year 2009 Publication Perception Abbreviated Journal PER
Volume 38 Issue Pages 36
Keywords
Abstract In a previous experiment [Parraga et al, 2009 Journal of Imaging Science and Technology 53(3)] the boundaries between basic colour categories were measured by asking subjects to categorize colour samples presented in isolation (ie on a dark background) using a YES/NO paradigm. Results showed that some boundaries (eg green – blue) were very diffuse and the subjects' answers presented bimodal distributions, which were attributed to the emergence of non-basic categories in those regions (eg turquoise). To confirm these results we performed a new experiment focussed on the boundaries where bimodal distributions were more evident. In this new experiment rectangular colour samples were presented surrounded by random colour patches to simulate contextual conditions on a calibrated CRT monitor. The names of two neighbouring colours were shown at the bottom of the screen and subjects selected the boundary between these colours by controlling the chromaticity of the central patch, sliding it across these categories' frontier. Results show that in this new experimental paradigm, the formerly uncertain inter-colour category boundaries are better defined and the dispersions (ie the bimodal distributions) that occurred in the previous experiment disappear. These results may provide further support to Berlin and Kay's basic colour terms theory.
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Notes CIC Approved no
Call Number CAT @ cat @ BPV2009 Serial 1192
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Author (up) Robert Benavente; C. Alejandro Parraga; Maria Vanrell
Title La influencia del contexto en la definicion de las fronteras entre las categorias cromaticas Type Conference Article
Year 2010 Publication 9th Congreso Nacional del Color Abbreviated Journal
Volume Issue Pages 92–95
Keywords Categorización del color; Apariencia del color; Influencia del contexto; Patrones de Mondrian; Modelos paramétricos
Abstract En este artículo presentamos los resultados de un experimento de categorización de color en el que las muestras se presentaron sobre un fondo multicolor (Mondrian) para simular los efectos del contexto. Los resultados se comparan con los de un experimento previo que, utilizando un paradigma diferente, determinó las fronteras sin tener en cuenta el contexto. El análisis de los resultados muestra que las fronteras obtenidas con el experimento en contexto presentan menos confusión que las obtenidas en el experimento sin contexto.
Address Alicante (Spain)
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ISSN ISBN 978-84-9717-144-1 Medium
Area Expedition Conference CNC
Notes CIC Approved no
Call Number CAT @ cat @ BPV2010 Serial 1327
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Author (up) Robert Benavente; Francesc Tous; Ramon Baldrich; Maria Vanrell
Title Statical Modelling of a Colour Naming Space. Type Miscellaneous
Year 2002 Publication Proceedings of the 1st. European Conference on Colour in Graphics Imaging and Vision: 406–411. Abbreviated Journal
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Notes CIC Approved no
Call Number CAT @ cat @ BTB2002 Serial 289
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Author (up) Robert Benavente; Gemma Sanchez; Ramon Baldrich; Maria Vanrell; Josep Llados
Title Normalized colour segmentation for human appearance description. Type Miscellaneous
Year 2000 Publication 15 th International Conference on Pattern Recognition, 3:637–641. Abbreviated Journal
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Address Barcelona.
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Notes DAG;CIC Approved no
Call Number CAT @ cat @ BSB2000 Serial 223
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Author (up) Robert Benavente; M.C. Olive; Maria Vanrell; Ramon Baldrich
Title Colour Perception: A Simple Method for Colour Naming. Type Miscellaneous
Year 1999 Publication Abbreviated Journal
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Address Girona
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Notes CIC Approved no
Call Number CAT @ cat @ BOV1999 Serial 47
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Author (up) Robert Benavente; Maria Vanrell
Title A colour naming experiment Type Report
Year 2001 Publication CVC Technical Report #56 Abbreviated Journal
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Address CVC (UAB)
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Notes CIC Approved no
Call Number CAT @ cat @ BeV2001 Serial 78
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Author (up) Robert Benavente; Maria Vanrell
Title Fuzzy Colour Naming Based on Sigmoid Membership Functions. Type Miscellaneous
Year 2004 Publication CGIV 2004 Second European Conference on Colour in Graphics, Imaging and Vision, 135:139 Abbreviated Journal
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Address Aachen (Germany)
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Notes CIC Approved no
Call Number CAT @ cat @ BeV2004 Serial 441
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Author (up) Robert Benavente; Maria Vanrell
Title Parametrizacion del Espacio de Categorias de Color Type Miscellaneous
Year 2007 Publication Proceedings del VIII Congreso Nacional del Color Abbreviated Journal
Volume Issue Pages 77–78
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Address Madrid (Spain)
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Area Expedition Conference CNC’07
Notes CAT;CIC Approved no
Call Number CAT @ cat @ BeV2007 Serial 905
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Author (up) Robert Benavente; Maria Vanrell; Ramon Baldrich
Title Estimation of Fuzzy Sets for Computational Colour Categorization Type Journal
Year 2004 Publication Color Research and Application, 29(5):342–353 (IF: 0.739) Abbreviated Journal
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Notes CIC Approved no
Call Number CAT @ cat @ BVB2004 Serial 484
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Author (up) Robert Benavente; Maria Vanrell; Ramon Baldrich
Title A data set for fuzzy colour naming Type Journal
Year 2006 Publication Color Research & Application, 31(1):48–56 Abbreviated Journal
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Notes CIC Approved no
Call Number CAT @ cat @ BVB2006 Serial 590
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Author (up) Robert Benavente; Maria Vanrell; Ramon Baldrich
Title Parametric Fuzzy Sets for Automatic Color Naming Type Journal
Year 2008 Publication Journal of the Optical Society of America A Abbreviated Journal
Volume 25 Issue 10 Pages 2582–2593
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Notes CIC Approved no
Call Number CAT @ cat @ BVB2008 Serial 1004
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