| |
Records |
Links |
|
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 |
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 |
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 |
Fahad Shahbaz Khan; Joost Van de Weijer; Maria Vanrell |
|
| |
Title |
Top-Down Color Attention for Object Recognition |
Type |
Conference Article |
| |
Year |
2009 |
Publication |
12th International Conference on Computer Vision |
Abbreviated Journal |
|
|
| |
Volume |
|
Issue |
|
Pages |
979 - 986 |
|
| |
Keywords |
|
|
| |
Abstract |
Generally the bag-of-words based image representation follows a bottom-up paradigm. The subsequent stages of the process: feature detection, feature description, vocabulary construction and image representation are performed independent of the intentioned object classes to be detected. In such a framework, combining multiple cues such as shape and color often provides below-expected results. This paper presents a novel method for recognizing object categories when using multiple cues by separating the shape and color cue. Color is used to guide attention by means of a top-down category-specific attention map. The color attention map is then further deployed to modulate the shape features by taking more features from regions within an image that are likely to contain an object instance. This procedure leads to a category-specific image histogram representation for each category. Furthermore, we argue that the method combines the advantages of both early and late fusion. We compare our approach with existing methods that combine color and shape cues on three data sets containing varied importance of both cues, namely, Soccer ( color predominance), Flower (color and shape parity), and PASCAL VOC Challenge 2007 (shape predominance). The experiments clearly demonstrate that in all three data sets our proposed framework significantly outperforms the state-of-the-art methods for combining color and shape information. |
|
| |
Address |
Kyoto, Japan |
|
| |
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 |
1550-5499 |
ISBN |
978-1-4244-4420-5 |
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
ICCV |
|
| |
Notes |
CIC |
Approved |
no |
|
| |
Call Number |
CAT @ cat @ SWV2009 |
Serial |
1196 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Jaime Moreno; Xavier Otazu; Maria Vanrell |
|
| |
Title |
Local Perceptual Weighting in JPEG2000 for Color Images |
Type |
Conference Article |
| |
Year |
2010 |
Publication |
5th European Conference on Colour in Graphics, Imaging and Vision and 12th International Symposium on Multispectral Colour Science |
Abbreviated Journal |
|
|
| |
Volume |
|
Issue |
|
Pages |
255–260 |
|
| |
Keywords |
|
|
| |
Abstract |
The aim of this work is to explain how to apply perceptual concepts to define a perceptual pre-quantizer and to improve JPEG2000 compressor. The approach consists in quantizing wavelet transform coefficients using some of the human visual system behavior properties. Noise is fatal to image compression performance, because it can be both annoying for the observer and consumes excessive bandwidth when the imagery is transmitted. Perceptual pre-quantization reduces unperceivable details and thus improve both visual impression and transmission properties. The comparison between JPEG2000 without and with perceptual pre-quantization shows that the latter is not favorable in PSNR, but the recovered image is more compressed at the same or even better visual quality measured with a weighted PSNR. Perceptual criteria were taken from the CIWaM (Chromatic Induction Wavelet Model). |
|
| |
Address |
Joensuu, Finland |
|
| |
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 |
9781617388897 |
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
CGIV/MCS |
|
| |
Notes |
CIC |
Approved |
no |
|
| |
Call Number |
CAT @ cat @ MOV2010a |
Serial |
1307 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Jaime Moreno; Xavier Otazu; Maria Vanrell |
|
| |
Title |
Contribution of CIWaM in JPEG2000 Quantization for Color Images |
Type |
Conference Article |
| |
Year |
2010 |
Publication |
Proceedings of The CREATE 2010 Conference |
Abbreviated Journal |
|
|
| |
Volume |
|
Issue |
|
Pages |
132–136 |
|
| |
Keywords |
|
|
| |
Abstract |
The aim of this work is to explain how to apply perceptual concepts to define a perceptual pre-quantizer and to improve JPEG2000 compressor. The approach consists in quantizing wavelet transform coefficients using some of the human visual system behavior properties. Noise is fatal to image compression performance, because it can be both annoying for the observer and consumes excessive bandwidth when the imagery is transmitted. Perceptual pre-quantization reduces unperceivable details and thus improve both visual impression and transmission properties. The comparison between JPEG2000 without and with perceptual pre-quantization shows that the latter is not favorable in PSNR, but the recovered image is more compressed at the same or even better visual quality measured with a weighted PSNR. Perceptual criteria were taken from the CIWaM(ChromaticInductionWaveletModel). |
|
| |
Address |
Gjovik (Norway) |
|
| |
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 |
CREATE |
|
| |
Notes |
CIC |
Approved |
no |
|
| |
Call Number |
CAT @ cat @ MOV2010b |
Serial |
1308 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
C. Alejandro Parraga; Ramon Baldrich; Maria Vanrell |
|
| |
Title |
Accurate Mapping of Natural Scenes Radiance to Cone Activation Space: A New Image Dataset |
Type |
Conference Article |
| |
Year |
2010 |
Publication |
5th European Conference on Colour in Graphics, Imaging and Vision and 12th International Symposium on Multispectral Colour Science |
Abbreviated Journal |
|
|
| |
Volume |
|
Issue |
|
Pages |
50–57 |
|
| |
Keywords |
|
|
| |
Abstract |
The characterization of trichromatic cameras is usually done in terms of a device-independent color space, such as the CIE 1931 XYZ space. This is indeed convenient since it allows the testing of results against colorimetric measures. We have characterized our camera to represent human cone activation by mapping the camera sensor's (RGB) responses to human (LMS) through a polynomial transformation, which can be “customized” according to the types of scenes we want to represent. Here we present a method to test the accuracy of the camera measures and a study on how the choice of training reflectances for the polynomial may alter the results. |
|
| |
Address |
Joensuu, Finland |
|
| |
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 |
9781617388897 |
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
CGIV/MCS |
|
| |
Notes |
CIC |
Approved |
no |
|
| |
Call Number |
CAT @ cat @ PBV2010a |
Serial |
1322 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Javier Vazquez; G. D. Finlayson; Maria Vanrell |
|
| |
Title |
A compact singularity function to predict WCS data and unique hues |
Type |
Conference Article |
| |
Year |
2010 |
Publication |
5th European Conference on Colour in Graphics, Imaging and Vision and 12th International Symposium on Multispectral Colour Science |
Abbreviated Journal |
|
|
| |
Volume |
|
Issue |
|
Pages |
33–38 |
|
| |
Keywords |
|
|
| |
Abstract |
Understanding how colour is used by the human vision system is a widely studied research field. The field, though quite advanced, still faces important unanswered questions. One of them is the explanation of the unique hues and the assignment of color names. This problem addresses the fact of different perceptual status for different colors.
Recently, Philipona and O'Regan have proposed a biological model that allows to extract the reflection properties of any surface independently of the lighting conditions. These invariant properties are the basis to compute a singularity index that predicts the asymmetries presented in unique hues and basic color categories psychophysical data, therefore is giving a further step in their explanation.
In this paper we build on their formulation and propose a new singularity index. This new formulation equally accounts for the location of the 4 peaks of the World colour survey and has two main advantages. First, it is a simple elegant numerical measure (the Philipona measurement is a rather cumbersome formula). Second, we develop a colour-based explanation for the measure. |
|
| |
Address |
Joensuu, Finland |
|
| |
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 |
9781617388897 |
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
CGIV/MCS |
|
| |
Notes |
CIC |
Approved |
no |
|
| |
Call Number |
CAT @ cat @ VFV2010 |
Serial |
1324 |
|
| Permanent link to this record |
