| Records |
| Author |
Eduard Vazquez; Francesc Tous; Ramon Baldrich; Maria Vanrell |
| Title |
n-Dimensional Distribution Reduction Preserving its Structure |
Type |
Book Chapter |
| Year |
2006 |
Publication |
Artificial Intelligence Research and Development, M. Polit et al. (Eds.), 146: 167–175 |
Abbreviated Journal |
|
| Volume |
|
Issue |
|
Pages |
|
| Keywords |
|
| Abstract |
|
| Address |
IOS Press |
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor  |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
CIC |
Approved |
no |
| Call Number |
CAT @ cat @ VTB2006a |
Serial |
681 |
| Permanent link to this record |
| |
|
| |
| Author |
Eduard Vazquez; Ramon Baldrich; Javier Vazquez; Maria Vanrell |
| Title |
Topological histogram reduction towards colour segmentation |
Type |
Book Chapter |
| Year |
2007 |
Publication |
3rd Iberian Conference on Pattern Recognition and Image Analysis (IbPRIA 2007), J. Marti et al. (Eds.) LNCS 4477:55–62 |
Abbreviated Journal |
|
| Volume |
|
Issue |
|
Pages |
|
| Keywords |
|
| Abstract |
|
| Address |
Gerona (Spain) |
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
CIC |
Approved |
no |
| Call Number |
CAT @ cat @ VBV2007 |
Serial |
809 |
| Permanent link to this record |
| |
|
| |
| Author |
Javier Vazquez; Maria Vanrell; Anna Salvatella; Eduard Vazquez |
| Title |
A colour space based on the image content |
Type |
Book Chapter |
| Year |
2007 |
Publication |
Artificial Intelligence Research and Development, C. Angulo and L. Godo, pp 205–212 IOS Press |
Abbreviated Journal |
|
| Volume |
|
Issue |
|
Pages |
|
| Keywords |
|
| Abstract |
|
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
CIC |
Approved |
no |
| Call Number |
CAT @ cat @ VVS2007 |
Serial |
829 |
| Permanent link to this record |
| |
|
| |
| Author |
Xavier Otazu; Maria Vanrell; C. Alejandro Parraga |
| Title |
Mutiresolution Wavelet Framework Reproduces Induction Effects |
Type |
Journal |
| Year |
2007 |
Publication |
Perception 36:167–167, supp |
Abbreviated Journal |
|
| Volume |
|
Issue |
|
Pages |
|
| Keywords |
|
| Abstract |
|
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
CIC |
Approved |
no |
| Call Number |
CAT @ cat @ OVP2007 |
Serial |
842 |
| Permanent link to this record |
| |
|
| |
| Author |
C. Alejandro Parraga; Robert Benavente; Maria Vanrell |
| Title |
Modeling Colour-Naming Space with Fuzzy Sets |
Type |
Journal |
| Year |
2007 |
Publication |
Perception 36:198–198, supp |
Abbreviated Journal |
|
| Volume |
|
Issue |
|
Pages |
|
| Keywords |
|
| Abstract |
|
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
CIC |
Approved |
no |
| Call Number |
CAT @ cat @ PBV2007 |
Serial |
843 |
| Permanent link to this record |
| |
|
| |
| Author |
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 |
| Keywords |
|
| Abstract |
|
| Address |
Madrid (Spain) |
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
CNC’07 |
| Notes |
CAT;CIC |
Approved |
no |
| Call Number |
CAT @ cat @ BeV2007 |
Serial |
905 |
| Permanent link to this record |
| |
|
| |
| Author |
Xavier Otazu; Maria Vanrell; C. Alejandro Parraga |
| Title |
Multiresolution Wavelet Framework Models Brightness Induction Effects |
Type |
Journal |
| Year |
2008 |
Publication |
Vision Research |
Abbreviated Journal |
VR |
| Volume |
48 |
Issue |
5 |
Pages |
733–751 |
| Keywords |
|
| Abstract |
|
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
CIC |
Approved |
no |
| Call Number |
CAT @ cat @ OVP2008a |
Serial |
927 |
| Permanent link to this record |
| |
|
| |
| Author |
Javier Vazquez; Maria Vanrell; Ramon Baldrich |
| Title |
Towards a Psychophysical Evaluation of Colour Constancy Algorithms |
Type |
Conference Article |
| Year |
2008 |
Publication |
4th European Conference on Colour in Graphics, Imaging and Vision Proceedings |
Abbreviated Journal |
|
| Volume |
|
Issue |
|
Pages |
372–377 |
| Keywords |
|
| Abstract |
|
| Address |
Terrassa (Spain) |
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
CGIV08 |
| Notes |
CAT;CIC |
Approved |
no |
| Call Number |
CAT @ cat @ VVB2008a |
Serial |
968 |
| Permanent link to this record |
| |
|
| |
| Author |
C. Alejandro Parraga; Robert Benavente; Maria Vanrell; Ramon Baldrich |
| Title |
Modelling Inter-Colour Regions of Colour Naming Space |
Type |
Conference Article |
| Year |
2008 |
Publication |
4th European Conference on Colour in Graphics, Imaging and Vision Proceedings |
Abbreviated Journal |
|
| Volume |
|
Issue |
|
Pages |
218–222 |
| Keywords |
|
| Abstract |
|
| Address |
Terrassa (Spain) |
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
CGIV08 |
| Notes |
CAT;CIC |
Approved |
no |
| Call Number |
CAT @ cat @ PBV2008 |
Serial |
969 |
| Permanent link to this record |
| |
|
| |
| Author |
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 |
| Keywords |
|
| Abstract |
|
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
CIC |
Approved |
no |
| Call Number |
CAT @ cat @ BVB2008 |
Serial |
1004 |
| Permanent link to this record |
| |
|
| |
| Author |
Eduard Vazquez; Maria Vanrell |
| Title |
Eines per al desenvolupament de competencies de enginyeria en un assignatura de Intel·ligencia Artificial |
Type |
Miscellaneous |
| Year |
2008 |
Publication |
V Jornades d’Innovacio Docent (UAB) |
Abbreviated Journal |
|
| Volume |
|
Issue |
|
Pages |
|
| Keywords |
|
| Abstract |
|
| Address |
Bellaterra (Spain) |
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
CIC |
Approved |
no |
| Call Number |
CAT @ cat @ VaV2008 |
Serial |
1011 |
| Permanent link to this record |
| |
|
| |
| Author |
Xavier Otazu; Maria Vanrell; C. Alejandro Parraga |
| Title |
Colour induction effects are modelled by a low-level multiresolution wavelet framework |
Type |
Journal |
| Year |
2008 |
Publication |
Perception 37(Suppl.): 107 |
Abbreviated Journal |
|
| Volume |
|
Issue |
|
Pages |
|
| Keywords |
|
| Abstract |
|
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
CIC |
Approved |
no |
| Call Number |
CAT @ cat @ OVP2008b |
Serial |
1055 |
| Permanent link to this record |
| |
|
| |
| Author |
C. Alejandro Parraga; Robert Benavente; Maria Vanrell; Ramon Baldrich |
| Title |
Psychophysical measurements to model inter-colour regions of colour-naming space |
Type |
Journal Article |
| Year |
2009 |
Publication |
Journal of Imaging Science and Technology |
Abbreviated Journal |
|
| Volume |
53 |
Issue |
3 |
Pages |
031106 (8 pages) |
| Keywords |
image processing; Analysis |
| Abstract |
JCR Impact Factor 2009: 0.391
In this paper, we present a fuzzy-set of parametric functions which segment the CIE lab space into eleven regions which correspond to the group of common universal categories present in all evolved languages as identified by anthropologists and linguists. The set of functions is intended to model a color-name assignment task by humans and differs from other models in its emphasis on the inter-color boundary regions, which were explicitly measured by means of a psychophysics experiment. In our particular implementation, the CIE lab space was segmented into eleven color categories using a Triple Sigmoid as the fuzzy sets basis, whose parameters are included in this paper. The model’s parameters were adjusted according to the psychophysical results of a yes/no discrimination paradigm where observers had to choose (English) names for isoluminant colors belonging to regions in-between neighboring categories. These colors were presented on a calibrated CRT monitor (14-bit x 3 precision). The experimental results show that inter- color boundary regions are much less defined than expected and color samples other than those near the most representatives are needed to define the position and shape of boundaries between categories. The extended set of model parameters is given as a table. |
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
CIC |
Approved |
no |
| Call Number |
CAT @ cat @ PBV2009 |
Serial |
1157 |
| Permanent link to this record |
| |
|
| |
| Author |
Javier Vazquez; C. Alejandro Parraga; Maria Vanrell; Ramon Baldrich |
| Title |
Color Constancy Algorithms: Psychophysical Evaluation on a New Dataset |
Type |
Journal Article |
| Year |
2009 |
Publication |
Journal of Imaging Science and Technology |
Abbreviated Journal |
|
| Volume |
53 |
Issue |
3 |
Pages |
031105–9 |
| Keywords |
|
| Abstract |
The estimation of the illuminant of a scene from a digital image has been the goal of a large amount of research in computer vision. Color constancy algorithms have dealt with this problem by defining different heuristics to select a unique solution from within the feasible set. The performance of these algorithms has shown that there is still a long way to go to globally solve this problem as a preliminary step in computer vision. In general, performance evaluation has been done by comparing the angular error between the estimated chromaticity and the chromaticity of a canonical illuminant, which is highly dependent on the image dataset. Recently, some workers have used high-level constraints to estimate illuminants; in this case selection is based on increasing the performance on the subsequent steps of the systems. In this paper we propose a new performance measure, the perceptual angular error. It evaluates the performance of a color constancy algorithm according to the perceptual preferences of humans, or naturalness (instead of the actual optimal solution) and is independent of the visual task. We show the results of a new psychophysical experiment comparing solutions from three different color constancy algorithms. Our results show that in more than a half of the judgments the preferred solution is not the one closest to the optimal solution. Our experiments were performed on a new dataset of images acquired with a calibrated camera with an attached neutral grey sphere, which better copes with the illuminant variations of the scene. |
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
CIC |
Approved |
no |
| Call Number |
CAT @ cat @ VPV2009a |
Serial |
1171 |
| Permanent link to this record |
