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Author ![]() |
Jordi Vitria; Petia Radeva; X. Binefa; A. Pujol; Ernest Valveny; Robert Benavente; Craig Von Land | ||||
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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Address | CVC (UAB) | ||||
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Notes | OR;MILAB;DAG;CIC;MV | Approved | no | ||
Call Number | BCNPCL @ bcnpcl @ VRB1999b | Serial | 54 | ||
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Author ![]() |
Jordi Vitria; Petia Radeva; X. Binefa | ||||
Title | EigenHistograms: using low dimensional models of color distribution for real time object recognition | Type | Conference Article | ||
Year | 1999 | Publication | Computer Analysis of Images and Patterns | Abbreviated Journal | |
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Address | Ljubliana, Slovenia, Springer-Verlag | ||||
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Notes | OR;MILAB;MV | Approved | no | ||
Call Number | BCNPCL @ bcnpcl @ VRB1999a | Serial | 29 | ||
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Author ![]() |
Jordi Vitria; Petia Radeva; I. Aguilo | ||||
Title | Recent Advances in Artificial Intelligence Research and Development | Type | Book Chapter | ||
Year | 2004 | Publication | Frontiers in Artificial Intelligence and Applications, 113, J. Vitria, P. Radeva, I. Aguilo (Eds.), ISBN: 1–58603–466–9 | Abbreviated Journal | |
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Address | Amsterdam | ||||
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Notes | OR;MILAB;MV | Approved | no | ||
Call Number | BCNPCL @ bcnpcl @ VRA2004 | Serial | 509 | ||
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Author ![]() |
Jordi Vitria; M. Bressan; Petia Radeva | ||||
Title | Bayesian classification of cork stoppers using class-conditional independent component analysis | Type | Journal | ||
Year | 2006 | Publication | IEEE Transactions on Systems, Man and Cybernetics (Part C), 36(6) | Abbreviated Journal | |
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Notes | OR;MILAB;MV | Approved | no | ||
Call Number | BCNPCL @ bcnpcl @ VBR2006 | Serial | 723 | ||
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Author ![]() |
Jordi Vitria; M. Bressan; Petia Radeva | ||||
Title | Bayesian classification of cork stoppers using class-conditional independent component analysis | Type | Journal | ||
Year | 2007 | Publication | IEEE Transactions on Systems, Man and Cybernetics (Part C), 37(1): 32–38 (ISI 0,482) | Abbreviated Journal | |
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Notes | OR;MILAB;MV | Approved | no | ||
Call Number | BCNPCL @ bcnpcl @ VBR2007 | Serial | 795 | ||
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Author ![]() |
Jordi Vitria; Joao Sanchez; Miguel Raposo; Mario Hernandez | ||||
Title | Pattern Recognition and Image Analysis | Type | Book Whole | ||
Year | 2011 | Publication | 5th Iberian Conference Pattern Recognition and Image Analysis | Abbreviated Journal | |
Volume | 6669 | Issue | Pages | ||
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Address | Las Palmas de Gran Canaria. Spain | ||||
Corporate Author | Thesis | ||||
Publisher | Springer-Verlag | Place of Publication | Berlin | Editor | J. Vitrià; J. Sanchez; M. Raposo; M. Hernandez |
Language | Summary Language | Original Title | |||
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ISSN | ISBN | 978-3-642-2125 | Medium | ||
Area | Expedition | Conference | IbPRIA | ||
Notes | OR;MV | Approved | no | ||
Call Number | Admin @ si @ VSR2011 | Serial | 1730 | ||
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Author ![]() |
Jordi Vitria; J. Llacer | ||||
Title | Reconstructing 3D light microscopic images using the EM algorithm | Type | Journal | ||
Year | 1996 | Publication | Pattern Recognition Letters | Abbreviated Journal | |
Volume | 17 | Issue | 14 | Pages | 1491–1498 |
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Notes | OR;MV | Approved | no | ||
Call Number | BCNPCL @ bcnpcl @ ViL1996 | Serial | 74 | ||
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Author ![]() |
Jordi Vitria; J. Llacer | ||||
Title | Recovering brightness and depth from focus using the Expectation-Maximization Algorithm. | Type | Miscellaneous | ||
Year | 1995 | Publication | VI National Simposium on Pattern Recognition and image Analysis | Abbreviated Journal | |
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Address | Cordoba | ||||
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Notes | OR;MV | Approved | no | ||
Call Number | BCNPCL @ bcnpcl @ ViL1995 | Serial | 134 | ||
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Author ![]() |
Jordi Vitria; J. Llacer | ||||
Title | Recovering Depth from Focus Using Iterative image Estimation Techniques. | Type | Miscellaneous | ||
Year | 1993 | Publication | Tech.Report BL–35158, Lawrence Berkeley Laboratory. | Abbreviated Journal | |
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Address | University of California; Berkeley; USA; | ||||
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Notes | OR;MV | Approved | no | ||
Call Number | BCNPCL @ bcnpcl @ ViL1993 | Serial | 142 | ||
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Author ![]() |
Jordi Vitria; C. Gratin; D. Seron; F. Moreso | ||||
Title | Morphological image analysis for quantification of renal damage | Type | Report | ||
Year | 1995 | Publication | CVC Technical Report #02 | Abbreviated Journal | |
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Address | CVC (UAB) | ||||
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Notes | OR;MV | Approved | no | ||
Call Number | BCNPCL @ bcnpcl @ VGS1995 | Serial | 117 | ||
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Author ![]() |
Jordi Vitria | ||||
Title | Disseny de sistemes (intel.ligents) de visio. | Type | Miscellaneous | ||
Year | 1996 | Publication | Abbreviated Journal | ||
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Notes | OR;MV | Approved | no | ||
Call Number | BCNPCL @ bcnpcl @ Vit1996a | Serial | 88 | ||
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Author ![]() |
Jordi Vitria | ||||
Title | Introduccio a la Morfologia Matematica | Type | Report | ||
Year | 1996 | Publication | CVC Technical Report #06 | Abbreviated Journal | |
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Address | CVC (UAB) | ||||
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Notes | OR;MV | Approved | no | ||
Call Number | BCNPCL @ bcnpcl @ Vit1996b | Serial | 90 | ||
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Author ![]() |
Jordi Roca; Maria Vanrell; C. Alejandro Parraga | ||||
Title | What is constant in colour constancy? | Type | Conference Article | ||
Year | 2012 | Publication | 6th European Conference on Colour in Graphics, Imaging and Vision | Abbreviated Journal | |
Volume | Issue | Pages | 337-343 | ||
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Abstract | Color constancy refers to the ability of the human visual system to stabilize
the color appearance of surfaces under an illuminant change. In this work we studied how the interrelations among nine colors are perceived under illuminant changes, particularly whether they remain stable across 10 different conditions (5 illuminants and 2 backgrounds). To do so we have used a paradigm that measures several colors under an immersive state of adaptation. From our measures we defined a perceptual structure descriptor that is up to 87% stable over all conditions, suggesting that color category features could be used to predict color constancy. This is in agreement with previous results on the stability of border categories [1,2] and with computational color constancy algorithms [3] for estimating the scene illuminant. |
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ISSN | ISBN | 9781622767014 | Medium | ||
Area | Expedition | Conference | CGIV | ||
Notes | CIC | Approved | no | ||
Call Number | RVP2012 | Serial | 2189 | ||
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Author ![]() |
Jordi Roca; C. Alejandro Parraga; Maria Vanrell | ||||
Title | Categorical Focal Colours are Structurally Invariant Under Illuminant Changes | Type | Conference Article | ||
Year | 2011 | Publication | European Conference on Visual Perception | Abbreviated Journal | |
Volume | Issue | Pages | 196 | ||
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Abstract | The visual system perceives the colour of surfaces approximately constant under changes of illumination. In this work, we investigate how stable is the perception of categorical \“focal\” colours and their interrelations with varying illuminants and simple chromatic backgrounds. It has been proposed that best examples of colour categories across languages cluster in small regions of the colour space and are restricted to a set of 11 basic terms (Kay and Regier, 2003 Proceedings of the National Academy of Sciences of the USA 100 9085\–9089). Following this, we developed a psychophysical paradigm that exploits the ability of subjects to reliably reproduce the most representative examples of each category, adjusting multiple test patches embedded in a coloured Mondrian. The experiment was run on a CRT monitor (inside a dark room) under various simulated illuminants. We modelled the recorded data for each subject and adapted state as a 3D interconnected structure (graph) in Lab space. The graph nodes were the subject\’s focal colours at each adaptation state. The model allowed us to get a better distance measure between focal structures under different illuminants. We found that perceptual focal structures tend to be preserved better than the structures of the physical \“ideal\” colours under illuminant changes. | ||||
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Series Editor | Series Title | Perception 40 | Abbreviated Series Title | ||
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ISSN | ISBN | Medium | |||
Area | Expedition | Conference | ECVP | ||
Notes | CIC | Approved | no | ||
Call Number | Admin @ si @ RPV2011 | Serial | 1867 | ||
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Author ![]() |
Jordi Roca; C. Alejandro Parraga; Maria Vanrell | ||||
Title | Chromatic settings and the structural color constancy index | Type | Journal Article | ||
Year | 2013 | Publication | Journal of Vision | Abbreviated Journal | JV |
Volume | 13 | Issue | 4-3 | Pages | 1-26 |
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Abstract | Color constancy is usually measured by achromatic setting, asymmetric matching, or color naming paradigms, whose results are interpreted in terms of indexes and models that arguably do not capture the full complexity of the phenomenon. Here we propose a new paradigm, chromatic setting, which allows a more comprehensive characterization of color constancy through the measurement of multiple points in color space under immersive adaptation. We demonstrated its feasibility by assessing the consistency of subjects' responses over time. The paradigm was applied to two-dimensional (2-D) Mondrian stimuli under three different illuminants, and the results were used to fit a set of linear color constancy models. The use of multiple colors improved the precision of more complex linear models compared to the popular diagonal model computed from gray. Our results show that a diagonal plus translation matrix that models mechanisms other than cone gain might be best suited to explain the phenomenon. Additionally, we calculated a number of color constancy indices for several points in color space, and our results suggest that interrelations among colors are not as uniform as previously believed. To account for this variability, we developed a new structural color constancy index that takes into account the magnitude and orientation of the chromatic shift in addition to the interrelations among colors and memory effects. | ||||
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Notes | CIC; 600.052; 600.051; 605.203 | Approved | no | ||
Call Number | Admin @ si @ RPV2013 | Serial | 2288 | ||
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