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Author | Javier Vazquez; C. Alejandro Parraga; Maria Vanrell |
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Title | Ordinal pairwise method for natural images comparison | Type | Journal Article | |||
Year | 2009 | Publication | Perception | Abbreviated Journal | PER | |
Volume | 38 | Issue | Pages | 180 | ||
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Abstract | 38(Suppl.)ECVP Abstract Supplement
We developed a new psychophysical method to compare different colour appearance models when applied to natural scenes. The method was as follows: two images (processed by different algorithms) were displayed on a CRT monitor and observers were asked to select the most natural of them. The original images were gathered by means of a calibrated trichromatic digital camera and presented one on top of the other on a calibrated screen. The selection was made by pressing on a 6-button IR box, which allowed observers to consider not only the most natural but to rate their selection. The rating system allowed observers to register how much more natural was their chosen image (eg, much more, definitely more, slightly more), which gave us valuable extra information on the selection process. The results were analysed considering both the selection as a binary choice (using Thurstone's law of comparative judgement) and using Bradley-Terry method for ordinal comparison. Our results show a significant difference in the rating scales obtained. Although this method has been used in colour constancy algorithm comparisons, its uses are much wider, eg to compare algorithms of image compression, rendering, recolouring, etc. |
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Notes | CIC | Approved | no | |||
Call Number | CAT @ cat @ VPV2009b | Serial | 1191 | |||
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Author | Jordi Roca; A.Owen; G.Jordan; Y.Ling; C. Alejandro Parraga; A.Hurlbert |
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Title | Inter-individual Variations in Color Naming and the Structure of 3D Color Space | Type | Abstract | |||
Year | 2011 | Publication | Journal of Vision | Abbreviated Journal | VSS | |
Volume | 12 | Issue | 2 | Pages | 166 | |
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Abstract | 36.307
Many everyday behavioural uses of color vision depend on color naming ability, which is neither measured nor predicted by most standardized tests of color vision, for either normal or anomalous color vision. Here we demonstrate a new method to quantify color naming ability by deriving a compact computational description of individual 3D color spaces. Methods: Individual observers underwent standardized color vision diagnostic tests (including anomaloscope testing) and a series of custom-made color naming tasks using 500 distinct color samples, either CRT stimuli (“light”-based) or Munsell chips (“surface”-based), with both forced- and free-choice color naming paradigms. For each subject, we defined his/her color solid as the set of 3D convex hulls computed for each basic color category from the relevant collection of categorised points in perceptually uniform CIELAB space. From the parameters of the convex hulls, we derived several indices to characterise the 3D structure of the color solid and its inter-individual variations. Using a reference group of 25 normal trichromats (NT), we defined the degree of normality for the shape, location and overlap of each color region, and the extent of “light”-“surface” agreement. Results: Certain features of color perception emerge from analysis of the average NT color solid, e.g.: (1) the white category is slightly shifted towards blue; and (2) the variability in category border location across NT subjects is asymmetric across color space, with least variability in the blue/green region. Comparisons between individual and average NT indices reveal specific naming “deficits”, e.g.: (1) Category volumes for white, green, brown and grey are expanded for anomalous trichromats and dichromats; and (2) the focal structure of color space is disrupted more in protanopia than other forms of anomalous color vision. The indices both capture the structure of subjective color spaces and allow us to quantify inter-individual differences in color naming ability. |
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ISSN | 1534-7362 | ISBN | Medium | |||
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Notes | CIC | Approved | no | |||
Call Number | Admin @ si @ ROJ2011 | Serial | 1758 | |||
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Author | Felipe Lumbreras; Ramon Baldrich; Maria Vanrell; Joan Serrat; Juan J. Villanueva |
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Title | Multiresolution colour texture representations for tile classification | Type | Miscellaneous | |||
Year | 1999 | Publication | Proceedings of the VIII Symposium Nacional de Reconocimiento de Formas y Analisis de Imagenes | Abbreviated Journal | ||
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Address | Bilbao | |||||
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Notes | ADAS;CIC | Approved | no | |||
Call Number | ADAS @ adas @ LBV1999a | Serial | 3 | |||
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Author | Xavier Roca; Jordi Vitria; Maria Vanrell; Juan J. Villanueva |
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Title | Visual behaviours for binocular navigation with autonomous systems. | Type | Miscellaneous | |||
Year | 1999 | Publication | Proceedings of the VIII Symposium Nacional de Reconocimiento de Formas y Analisis de Imagenes | Abbreviated Journal | ||
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Address | Bilbao | |||||
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Notes | OR;ISE;CIC;MV | Approved | no | |||
Call Number | BCNPCL @ bcnpcl @ RVV1999a | Serial | 13 | |||
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Author | A. Pujol; Jordi Vitria; Petia Radeva; Xavier Binefa; Robert Benavente; Ernest Valveny; Craig Von Land |
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Title | Real time pharmaceutical product recognition using color and shape indexing. | Type | Conference Article | |||
Year | 1999 | Publication | Proceedings of the 2nd International Workshop on European Scientific and Industrial Collaboration (WESIC´99), Promotoring Advanced Technologies in Manufacturing. | Abbreviated Journal | ||
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Address | Wales | |||||
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Notes | OR;MILAB;DAG;CIC;MV | Approved | no | |||
Call Number | BCNPCL @ bcnpcl @ PVR1999 | Serial | 24 | |||
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Author | Maria Vanrell; Jordi Vitria; Xavier Roca |
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Title | A multidimensional scaling approach to explore the behavior of a texture perception algorithm. | Type | Journal Article | |||
Year | 1997 | Publication | Machine Vision and Applications | Abbreviated Journal | ||
Volume | 9 | Issue | Pages | 262–271 | ||
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Notes | OR;ISE;CIC;MV | Approved | no | |||
Call Number | BCNPCL @ bcnpcl @ VVR1997 | Serial | 35 | |||
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Author | Xavier Roca; Jordi Vitria; Maria Vanrell; Juan J. Villanueva |
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Title | Gaze control in a binocular robot systems | Type | Miscellaneous | |||
Year | 1999 | Publication | Abbreviated Journal | |||
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Address | Barcelona | |||||
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Notes | OR;ISE;CIC;MV | Approved | no | |||
Call Number | BCNPCL @ bcnpcl @ RVV1999b | Serial | 41 | |||
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Author | Felipe Lumbreras; Ramon Baldrich; Maria Vanrell; Joan Serrat; Juan J. Villanueva |
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Title | Multiresolution texture classification of ceramic tiles. | Type | Book Chapter | |||
Year | 1999 | Publication | Recent Research developments in optical engineering, Research Signpost, 2: 213–228 | Abbreviated Journal | ||
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Address | India | |||||
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Notes | ADAS;CIC | Approved | no | |||
Call Number | ADAS @ adas @ LBV1999b | Serial | 45 | |||
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Author | Robert Benavente; M.C. Olive; Maria Vanrell; Ramon Baldrich |
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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 | Robert Benavente |
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Title | Dealing with colour variability: application to a colour naming task | Type | Report | |||
Year | 1999 | Publication | CVC Technical Report #32 | Abbreviated Journal | ||
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Address | CVC (UAB) | |||||
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Notes | CIC | Approved | no | |||
Call Number | CAT @ cat @ Ben1999 | Serial | 53 | |||
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Author | Jordi Vitria; Petia Radeva; X. Binefa; A. Pujol; Ernest Valveny; Robert Benavente; Craig Von Land |
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Title | Real time recognition of pharmaceutical products by subspace methods | Type | Report | |||
Year | 1999 | Publication | CVC Technical Report #35 | Abbreviated Journal | ||
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Notes | OR;MILAB;DAG;CIC;MV | Approved | no | |||
Call Number | BCNPCL @ bcnpcl @ VRB1999b | Serial | 54 | |||
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Author | Ramon Baldrich |
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Title | Perceptual approach to a computational colour-texture representation for surface inspection. | Type | Book Whole | |||
Year | 2001 | Publication | PhD Thesis, Universitat Autonoma de Barcelona-CVC | Abbreviated Journal | ||
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Notes | CIC | Approved | no | |||
Call Number | CAT @ cat @ Bal2001 | Serial | 73 | |||
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Author | Robert Benavente; Maria Vanrell |
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Title | A colour naming experiment | Type | Report | |||
Year | 2001 | Publication | CVC Technical Report #56 | Abbreviated Journal | ||
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Notes | CIC | Approved | no | |||
Call Number | CAT @ cat @ BeV2001 | Serial | 78 | |||
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Author | O. Fors; Xavier Otazu; J. Nuñez |
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Title | Fusion Mediante Wavelets de Imagenes Spot-pan y del Satelite Tailandes TMSAT. | Type | Miscellaneous | |||
Year | 2001 | Publication | Teledeteccion, Medio Ambiente y Cambio Global, IX Congreso Nacional de Teledeteccion, 546–550. | Abbreviated Journal | ||
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Address | Lleida | |||||
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Notes | CIC | Approved | no | |||
Call Number | CAT @ cat @ FON2001 | Serial | 94 | |||
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Author | Felipe Lumbreras; Xavier Roca; Daniel Ponsa; Robert Benavente; Judit Martinez; Silvia Sanchez; Coen Antens; Juan J. Villanueva |
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Title | Visual Inspection of Safety Belts | Type | Conference Article | |||
Year | 2001 | Publication | International Conference on Quality Control by Artificial Vision | Abbreviated Journal | ||
Volume | 2 | Issue | Pages | 526–531 | ||
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Address | France | |||||
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Area | Expedition | Conference | QCAV | |||
Notes | ADAS;ISE;CIC | Approved | no | |||
Call Number | ADAS @ adas @ LRP2001 | Serial | 122 | |||
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Author | Felipe Lumbreras; Joan Serrat; Ramon Baldrich; Maria Vanrell; Juan J. Villanueva |
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Title | Color Texture Recognition Through Multiresolution Features | Type | Miscellaneous | |||
Year | 2001 | Publication | QCAV 2001 International Conference on Quality Control by Artificial Vision, France, 1:114–121. | Abbreviated Journal | ||
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Notes | ADAS;CIC | Approved | no | |||
Call Number | ADAS @ adas @ LSB2001 | Serial | 124 | |||
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Author | Xavier Otazu; J. Nuñez |
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Title | Algoritmo de Clasificacion no Supervisada Basado en Wavelets. | Type | Miscellaneous | |||
Year | 2001 | Publication | Teledeteccion, Medio Ambiente y Cambio Global, IX Congreso Nacional de Teledeteccion, 437–440. | Abbreviated Journal | ||
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Address | Lleida | |||||
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Notes | CIC | Approved | no | |||
Call Number | CAT @ cat @ ONu2001 | Serial | 147 | |||
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Author | Maria Vanrell; Jordi Vitria; Xavier Roca |
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Title | A General Morphological Framework for Perceptual Texture Discrimination based on Granulometries. | Type | Miscellaneous | |||
Year | 1993 | Publication | Technical Workshop on Mathematical Morphology and its Applications to Signal Processing. | Abbreviated Journal | ||
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Address | Barcelona | |||||
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Notes | OR;ISE;CIC;MV | Approved | no | |||
Call Number | BCNPCL @ bcnpcl @ VVR1993 | Serial | 154 | |||
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