Colour in Context
Research group
Computer Vision Center

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81 publications
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Journals
Chromatic settings and the structural color constancy index   RPV2013.pdf
Jordi Roca-Vila, C. Alejandro Parraga, Maria Vanrell
Journal of Vision, Volume 13, Number 4(3), page 1--2 - 2013
IF: 2.727. area: OPHTHALMOLOGY. Quartile: 1.
Low-level Spatio-Chromatic Grouping for Saliency Estimation   pami2013.pdf
Naila Murray, Maria Vanrell, Xavier Otazu, C. Alejandro Parraga
IEEE Transaction on Pattern Analysis and Machine Intelligence - June 2013
IF: 5.694. area: COMPUTER SCIENCE, ARTIFICIAL I. Quartile: 1.
 
Toward a unified chromatic induction model   JoV_2010.pdf Psychophysics_results.pdf
Xavier Otazu, C. Alejandro Parraga, Maria Vanrell
Journal of Vision, Volume 10(12), Number 6 - 2010
IF: 3.022. area: OPHTHALMOLOGY. Quartile: 1.
 
Color Constancy Algorithms: Psychophysical Evaluation on a New Dataset   VPVB09.pdf
Javier Vazquez-Corral, C. Alejandro Parraga, Maria Vanrell, Ramon Baldrich
Journal of Imaging Science and Technology , Volume 53, Number 3 - May-June 2009
IF: 0.707. area: IMAGING SCIENCE & PHOTOGRAPHIC. Quartile: 3.
Psychophysical measurements to model inter-colour regions of colour-naming space   JIST09colourcategorization.pdf
C. Alejandro Parraga, Robert Benavente, Maria Vanrell, Ramon Baldrich
Journal of Imaging Science and Technology , Volume 53, Number 3, page 031106-(8) - 2009
IF: 0.391. area: IMAGING SCI. & PHOTO. TECHN.. Quartile: Q4.
 
Multiresolution Wavelet Framework Models Brightness Induction Effects   otazu_et_al_visres(in press).pdf
Xavier Otazu, Maria Vanrell, C. Alejandro Parraga
Vision Research , Volume 48, Number 5, page 733--751 - 2008
IF: 2.051. area: OPHTHALMOLOGY. Quartile: 2.
Mutiresolution wavelet Framework models brigthness induction effects   VR_biwam_2008.pdf
Xavier Otazu, Maria Vanrell, C. Alejandro Parraga
Vision Research , Volume 48, page 733--751 - Feb 2008
IF: 2.05. area: ophtalmology. Quartile: 2 14/45.
 
Evaluation of a Multiscale Color Model for Visual Difference Prediction   Lovell_et_al_ACMTransactions3(3)2006.pdf
P. George Lovell, C. Alejandro Parraga, Tom Troscianko, C. Ripamonti, D.J. Tolhurst
ACM Transactions on Applied Perception, Volume 3, Number 3, page 155-178 - 2006
IF: 1.447. area: COMPUTER SCI., SOFTW. ENGIN.. Quartile: Q2 (2009).
Use of a vision model to quantify the significance of factors effecting target conspicuity   Gilmore et al SPIE_draft.pdf
M.A. Gilmore, C.K. Jones, A.W. Haynes, D.J. Tolhurst, M. To, Tom Troscianko, P. George Lovell, C. Alejandro Parraga, K. Pickavance
Proceedings of SPIE, the International Society for Optical Engineering , Volume 6239, page 62390R - April 2006
IF: 0.348. area: Electrical and Electronic Eng.. Quartile: Q3.
Using digital photography to study animal coloration   Stevens_et_al_BJLinnSoc()2007.pdf
Martin Stevens, C. Alejandro Parraga, Innes Cuthill, Tom Troscianko
Biological journal of the linnean society, Number 90, page 11--237 - 2006
IF: 2.445. area: Evolutionary Biology . Quartile: Q3.
Disruptive coloration and background pattern matching   Nature434(7029)2005.pdf
Innes Cuthill, Martin Stevens, Jenna Sheppard, Tracey Maddocks, C. Alejandro Parraga, Tom Troscianko
Nature, Number 434, page 72--74 - 2005
IF: 29.27. area: MULTIDISCIPLINARY SCIENCES. Quartile: Q1.
Myoclonus induced by cathode ray tube screens and low-frequency lighting in the European starling (Sturnus vulgaris)   Smith et al Veterinary Record 2005.pdf
E.L. Smith, J.E. Evans, C. Alejandro Parraga
Veterinary Record, Number 157, page 148--150 - 2005
IF: 1.017. area: VETERINARY SCIENCES. Quartile: Q2.
Stability of the color-opponent signals under changes of illuminant in natural scenes   Lovell_et_al_JOSA22(10)2005.pdf
P. George Lovell, D.J. Tolhurst, C. Alejandro Parraga, R. Baddeley, U. Leonards, Tom Troscianko
Journal of the Optical Society of America A, Volume 22, Number 10, page 2060--2071 - 2005
IF: 1.764. area: OPTICS. Quartile: Q2.
The effects of amplitude-spectrum statistics on foveal and peripheral discrimination of changes in natural images, and a multi-resolution model   Parraga_et_al_VisRes45()2005.pdf
C. Alejandro Parraga, Tom Troscianko, D.J. Tolhurst
Vision Research , Number 45, page 3145--3168 - 2005
IF: 2.027. area: Neurosciences. Quartile: Q3.
Spatiochromatic Properties of Natural Images and Human Vision   CurrentBiology12()2002.pdf
C. Alejandro Parraga, Tom Troscianko, D.J. Tolhurst
Current Biology, Volume 12, Number 6, page 483--487 - 2002
IF: 7.007. area: BIOCHEMISTRY & MOLE. BIOLOGY.
The effect of contrast randomisation on the discrimination of changes in the slopes of the amplitude spectra of natural scenes   p2904.pdf
C. Alejandro Parraga, D.J. Tolhurst
Perception, Volume 29, Number 9, page 1101--1116 - 2000
IF: 1.193. area: PSYCHOLOGY.
The human visual system is optimised for processing the spatial information in natural visual images   currbiol2000.pdf
C. Alejandro Parraga, Tom Troscianko, D.J. Tolhurst
Current Biology, Volume 10, Number 1, page 35--38 - 2000
IF: 8.393. area: BIOCHEMISTRY & MOLE. BIOLOGY.
Color and luminance information in natural scenes   (JOSA 15, 1998).pdf
C. Alejandro Parraga, Gavin Brelstaff, Tom Troscianko
Journal of the Optical Society of America A, Volume 15, Number 3, page 563--569 - 1998
IF: 1.645. area: OPTICS.
 
Published abstracts
Which Tone-Mapping is the best? A Comparative Study of Tone-Mapping Perceived Quality   ECVP Proofs_319.pdf
Xim Cerda-Company, C. Alejandro Parraga, Xavier Otazu
Perception - 2014
Predicting categorical colour perception in successive colour constancy   p187.pdf
Jordi Roca-Vila, C. Alejandro Parraga, Maria Vanrell
Perception, Volume 41, Number (Suppl.), page 138--138 - 2012
IF: 1.31. area: PSYCHOLOGY. Quartile: 3.
Categorical focal colours are structurally invariant under illuminant changes   p040.pdf
Jordi Roca-Vila, C. Alejandro Parraga, Maria Vanrell
Perception, European Conference on Visual Perception (ECVP´11), Volume 40, page 196 - 2011
IF: 1.313. area: PSYCHOLOGY. Quartile: 3.
Do basic colors influence chromatic adaptation?   p091.pdf
C. Alejandro Parraga, Jordi Roca-Vila, Maria Vanrell
Journal of Vision, Vision Sciences Society, Volume 11, page 349 - 2011
IF: 3.376. area: OPHTHALMOLOGY. Quartile: 1.
Inter-individual variations in color naming and the structure of 3D color space   p127.pdf
Jordi Roca-Vila, A. Owen, G. Jordan, Y. Ling, C. Alejandro Parraga, A. Hurlbert
Journal of Vision, Vision Sciences Society, Volume 11, page 386 - 2011
IF: 3.376. area: OPHTHALMOLOGY. Quartile: 1.
Retinal filtering matches natural image statistics at low luminance levels   p199.pdf
C. Alejandro Parraga, Olivier Penacchio, Maria Vanrell
Perception, European Conference on Visual Perception (ECVP´11), Volume 40, page 96 - 2011
IF: 1.313. area: PSYCHOLOGY. Quartile: 3.
What is the best criterion for an efficient design of retinal photoreceptor mosaics?   p258.pdf
Olivier Penacchio, C. Alejandro Parraga
Perception, European Conference on Visual Perception (ECVP´11), Volume 40, page 197 - 2011
IF: 1.313. area: PSYCHOLOGY. Quartile: 3.
Natural Scenes Statistics account for Human Cones Ratios   18.pdf
Olivier Penacchio, C. Alejandro Parraga, Maria Vanrell
Perception, European Conference on Visual Perception (ECVP 2010), Number 39, page 101 - 2010
IF: 1.293. area: PSYCHOLOGY. Quartile: 3.
Towards a general model of colour categorization which considers context   p241.pdf
C. Alejandro Parraga, Robert Benavente, Maria Vanrell
Perception, European Conference on Visual Perception (ECVP´10), Volume 39, page 86 - Aug 2010
IF: 1.293. area: PSYCHOLOGY. Quartile: 3.
A new cone activation-based natural images dataset.   PVV09.pdf
C. Alejandro Parraga, Javier Vazquez-Corral, Maria Vanrell
Perception, European Conference on Visual Perception (ECVP´09), Volume 38, page 180 - Aug 2009
IF: 1.462. area: PSYCHOLOGY. Quartile: 3.
Colour categories boundaries are better defined in contextual conditions   ECVP2009_preprint_web.pdf
Robert Benavente, C. Alejandro Parraga, Maria Vanrell
Perception, European Conference on Visual Perception (ECVP 2009), Volume 38, page 36 - Aug 2009
IF: 1.462. area: PSYCHOLOGY. Quartile: 3.
Ordinal pairwise method for natural images comparison   VPV09.pdf
Javier Vazquez-Corral, C. Alejandro Parraga, Maria Vanrell
Perception, European Conference on Visual Perception (ECVP´09), Volume 38, page 180 - 2009
IF: 1.462. area: PSYCHOLOGY. Quartile: 3.
Colour induction effects are modelled by a low-level multiresolution wavelet framework  
Xavier Otazu, Maria Vanrell, C. Alejandro Parraga
European Conference on Visual Perception (ECVP'08) - May 2008
IF: 1.61. area: psychology, experimental. Quartile: 2 32/72.
Modelling colour-naming space with fuzzy sets   ECVP07_preprint_web.pdf
C. Alejandro Parraga, Robert Benavente, Maria Vanrell, Ramon Baldrich
European Conference on Visual Perception (ECVP'07), Volume 36, page 198 - Aug 2007
IF: 1.61. area: Experimental Psychology. Quartile: 2 32/72.
Multiresolution Wavelet Framework Reproduces Induction Efects   p153.pdf
Xavier Otazu, Maria Vanrell, C. Alejandro Parraga
Perception, European Conference on Visual Perception (ECVP´07), Volume 36, page 167 - Aug 2007
IF: 1.617. area: PSYCHOLOGY. Quartile: 3.
Colour vision and illumination noise in primates and birds   p066.pdf
Tom Troscianko, P. George Lovell, C. Alejandro Parraga, R. Baddeley, D.J. Tolhurst
Perception, European Conference on Visual Perception (ECVP´06), Volume 35, page 227 - 2006
IF: 1.585. area: PSYCHOLOGY. Quartile: 3.
Detection of cryptic targets in avian vision: A field study   p081.pdf
Tom Troscianko, Innes Cuthill, Martin Stevens, L. Graham, S. Richardson, C. Alejandro Parraga
Perception, European Conference on Visual Perception (ECVP´05), Volume 34, page 47b - 2005
IF: 1.391. area: PSYCHOLOGY. Quartile: 3.
Modelling red-green and blue-yellow colour vision   p149.pdf
C. Alejandro Parraga, P. George Lovell, Tom Troscianko, D.J. Tolhurst
Perception, European Conference on Visual Perception (ECVP´05), Volume 34, page 155--156b - 2005
IF: 1.391. area: PSYCHOLOGY. Quartile: 3.
Opponent channel responses to changes in the illuminant of natural scenes for primates and birds   p167.pdf
P. George Lovell, D.J. Tolhurst, C. Alejandro Parraga, R. Baddeley, U. Leonards, Tom Troscianko
Perception, European Conference on Visual Perception (ECVP´05), Volume 34, page 59b - 2005
IF: 1.391. area: PSYCHOLOGY. Quartile: 3.
A multi-resolution model for human chromatic and achromatic local-contrast discrimination   p017.pdf
C. Alejandro Parraga, Tom Troscianko, D.J. Tolhurst
Perception, European Conference on Visual Perception (ECVP´04), Volume 33, page 118b - 2004
IF: 1.271. area: PSYCHOLOGY. Quartile: 3.
Disruptive coloration and background pattern matching in insect crypsis   p090.pdf
Martin Stevens, Innes Cuthill, Jenna Sheppard, Tracey Maddocks, Tom Troscianko, C. Alejandro Parraga
Perception, European Conference on Visual Perception (ECVP´04), Volume 33, page 35b - 2004
IF: 1.271. area: PSYCHOLOGY. Quartile: 3.
Natural illumination, shadows, and primate colour vision   p161.pdf
Tom Troscianko, C. Alejandro Parraga, P. George Lovell, D.J. Tolhurst, R. Baddeley, U. Leonards
Perception, European Conference on Visual Perception (ECVP´04), Volume 33, page 45b - 2004
IF: 1.271. area: PSYCHOLOGY. Quartile: 3.
Leaves, fruit, shadows, and lighting in Kibale Forest   p137.pdf
Tom Troscianko, C. Alejandro Parraga, U. Leonards, R. Baddeley, D.J. Tolhurst
Perception, European Conference on Visual Perception (ECVP´03), Volume 32, page 51b - 2003
IF: 1.259. area: PSYCHOLOGY. Quartile: 3.
Performing a naturalistic visual task when the spatial structure of colour in natural scenes is changed   p181.pdf
C. Alejandro Parraga, Tom Troscianko, D.J. Tolhurst
Perception, European Conference on Visual Perception (ECVP´03), Volume 32, page 168b - 2003
IF: 1.259. area: PSYCHOLOGY. Quartile: 3.
Visual discrimination of natural-scene stimuli by amblyopic people   p252.pdf
D.J. Tolhurst, C. Alejandro Parraga
Journal of Physiology, Volume 548P, page O75 - 2003
Complex scenes, simple neurons, and complex applications   p068.pdf
Tom Troscianko, D.J. Tolhurst, C. Alejandro Parraga
Perception, European Conference on Visual Perception (ECVP´02), Volume 31, page 383b - 2002
IF: 1.314. area: PSYCHOLOGY.
Limitations of a low-level model of discrimination of changes between images   p138.pdf
C. Alejandro Parraga, Tom Troscianko, D.J. Tolhurst
Perception, European Conference on Visual Perception (ECVP´02), Volume 31, page 140b - 2002
IF: 1.314. area: PSYCHOLOGY.
Spatiochromatic information in natural scenes   p210.pdf
Tom Troscianko, C. Alejandro Parraga, D.J. Tolhurst
Perception, European Conference on Visual Perception (ECVP´02), Volume 31, page 149b - 2002
IF: 1.314. area: PSYCHOLOGY.
Fourier statistics of fruit in foliage - a match with human contrast sensitivity?   p106.pdf
C. Alejandro Parraga, Tom Troscianko, D.J. Tolhurst
Perception, European Conference on Visual Perception (ECVP´01), Volume 30, page 109b - 2001
IF: 1.31. area: PSYCHOLOGY.
Human red-green chrominance contrast sensitivity is matched to the spatiochromatic Fourier spectra of images of fruit in foliage   p117.pdf
C. Alejandro Parraga, Tom Troscianko, D.J. Tolhurst
Journal of Physiology, Volume 536, page 42P - 2001
Discrimination thresholds for morphed objects in peripheral vision   p086.pdf
C. Alejandro Parraga, Tom Troscianko, D.J. Tolhurst
Perception, European Conference on Visual Perception (ECVP´00), Volume 29, page 58b - 2000
IF: 1.193. area: PSYCHOLOGY.
Perceived contrast of natural images is mediated by higher- order image statistics   p173.pdf
Tom Troscianko, M. Chirimuuta, C. Alejandro Parraga, D.J. Tolhurst
Perception, European Conference on Visual Perception (ECVP´00), Volume 29, page 82b - 2000
IF: 1.193. area: PSYCHOLOGY.
Stimuli based on natural scenes for studying the contributions of luminance and colour to human spatial vision   p218.pdf
D.J. Tolhurst, C. Alejandro Parraga, Tom Troscianko
Journal of Physiology, Volume 527, page 4P - 2000
A computational model predicts discrimination thresholds for morphed objects in natural scenes   p012.pdf
C. Alejandro Parraga, D.J. Tolhurst, Tom Troscianko
Perception, European Conference on Visual Perception (ECVP´99), Volume 28, page 127b - 1999
IF: 1.033. area: PSYCHOLOGY.
Discrimination of changes in the slope of the amplitude spectra of complex visual images by human observers may require comparison of contrast between different spatial-frequency bands   p085.pdf
C. Alejandro Parraga, D.J. Tolhurst, J.T.C. Lee
Journal of Physiology, Volume 506, page 86P--86P - 1998
How amblyopic vision uses phase and amplitude information in natural images   p115.pdf
C. Alejandro Parraga, G.M. Kennedy, D.J. Tolhurst
European Conference on Visual Perception (ECVP'98), Volume 27(2), page 239-240 - 1998
Natural image statistics and visual processing. Are they matched?   p162.pdf
C. Alejandro Parraga, D.J. Tolhurst, Tom Troscianko
Perception, European Conference on Visual Perception (ECVP´98), Volume 25, page 152b-153b - 1998
IF: 0.882. area: PSYCHOLOGY.
The human visual system is optimised for discriminating the spatial structure of scenes with natural second-order statistics   p250.pdf
C. Alejandro Parraga, D.J. Tolhurst, Tom Troscianko
Journal of Physiology, Volume 512, page 102P - 1998
The use of morphed images in the quantitative study of human spatial vision   p235.pdf
D.J. Tolhurst, Tom Troscianko, P.J. Benson, C. Alejandro Parraga
Journal of Physiology, Volume 506, page 11P--12P - 1997
 
International conferences
Colour categorization from colour opponency   ECVPabstractPR.pdf
C. Alejandro Parraga, Ivet Rafegas
European Conference on Visual Perception (ECVP) - 2013
IF: 1.114. Quartile: 4.
Computation of Saliency Maps using Psychophysical Measurements of Colour Induction   VMO2012.pdf
Maria Vanrell, Naila Murray, Xavier Otazu, C. Alejandro Parraga
Applied Vision Association (AVA 2012) - 2012
What is constant in colour constancy?   p257.pdf
Jordi Roca-Vila, Maria Vanrell, C. Alejandro Parraga
6th European Conference on Colour in Graphics, Imaging, and Vision and 12th International Symposium on Multispectral Colour Science, page 337--343 - May 2012
Saliency Estimation Using a Non-Parametric Low-Level Vision Model   Murray2011.pdf
Naila Murray, Maria Vanrell, Xavier Otazu, C. Alejandro Parraga
Computer Vision and Pattern Recognition (CVPR), page 433--440 - 2011
 
Accurate mapping of natural scenes radiance to cone activation space: a new image dataset   07.pdf
C. Alejandro Parraga, Ramon Baldrich, Maria Vanrell
5th European Conference on Colour in Graphics, Imaging, and Vision - Proceedings of the CGIV 2010, page 50-57 - 2010
Modelling Inter-Colour Regions of Colour Naming Space   CGIV2008_preprint_web.pdf
C. Alejandro Parraga, Robert Benavente, Maria Vanrell, Ramon Baldrich
European Conference on Colour in Graphics, Imaging and Vision (CGIV'08), page 218--222 - Jun 2008
Towards a Psychophysical Evaluation of Colour Constancy Algorithms   CGIV2008.pdf
Javier Vazquez-Corral, Maria Vanrell, Ramon Baldrich, C. Alejandro Parraga
European Conference on Colour in Graphics, Imaging and Vision (CGIV'08), page 372--377 - Jun 2008
A multiresolution color model for visual difference prediction   tolhurst-etal.pdf
D.J. Tolhurst, C. Alejandro Parraga, P. George Lovell, C. Ripamonti, Tom Troscianko
International conference proceeding series, Volume 95, page 135--138 - 2005
A multiresolution colour model for visual difference prediction   APGV_paper_final.pdf
D.J. Tolhurst, C. Alejandro Parraga, P. George Lovell, C. Ripamonti, Tom Troscianko
Perception in graphics and visualization - Aug 2005
Performing a naturalistic task when the spatial structure of colour in natural scenes is changed   p181.pdf
C. Alejandro Parraga, Tom Troscianko, D.J. Tolhurst
Applied Vision Association (AVA'03) - Sep 2003
Spatiochromatic properties of images of fruits and leaves from Kibale Forest, Uganda  
C. Alejandro Parraga, Tom Troscianko, D.J. Tolhurst, U. Leonards
Vision Sciences Society - May 2003
Spatiochromatic properties of natural images in Kibale Forest, Uganda  
C. Alejandro Parraga, Tom Troscianko, D.J. Tolhurst
Function and Evolution of the Primate Visual System - Jul 2003
Visual encoding of green leaves in primate vision  
Tom Troscianko, R. Baddeley, C. Alejandro Parraga, U. Leonards
Vision Sciences Society - May 2003
Visual encoding stability of green leaves in primate vision  
Tom Troscianko, R. Baddeley, C. Alejandro Parraga, U. Leonards
Function and Evolution of the Primate Visual System - Jul 2003
Spatiochromatic properties of natural images and human vision   CurrentBiology12()2002.pdf
C. Alejandro Parraga, Tom Troscianko, D.J. Tolhurst
Third Forum of European Neuroscience - Jul 2002
Perceived contrast of filtered natural images   p172.pdf
Tom Troscianko, M. Chirimuuta, C. Alejandro Parraga, D.J. Tolhurst
Applied Vision Association (AVA'99) - Dec 1999
Hyperspectral camera system: acquisition and analysis.   17.pdf
Gavin Brelstaff, C. Alejandro Parraga, Tom Troscianko, Derek Carr
SPIE - Human vision, visual processing and digital displays. Geographic information systems, photogrammetry, and geological/geophysical remote sensing., Volume 2587, page 150--159 - 1995
 
Other conferences
La influencia del contexto en la definición de las fronteras entre las categorías cromáticas   CNC2010_preprint_web.pdf
Robert Benavente, C. Alejandro Parraga, Maria Vanrell
IX Congreso Nacional del Color (CNC'10), page 92--95 - Jun 2010
Language: Spanish
Human and Computational Color Constancy   RPV09.pdf
Jordi Roca-Vila, C. Alejandro Parraga, Maria Vanrell
New Trends and Challenges in Computer Vision: Progress of Research and Development - 2009
 
Other publications
Perception Based Representations for Computational Colour   Vanrellcciw2011.pdf
Maria Vanrell, Naila Murray, Robert Benavente, C. Alejandro Parraga, Xavier Otazu, Ramon Baldrich
Computational Color Imaging Workshop, Lecture Notes in Computer Science, Volume 6626 - 2011
 
Book chapters
Coloresia: An Interactive Colour Perception Device for the Visually Impaired   Preprint Interactive Color Perception.pdf
Abel Gonzalez, Robert Benavente, Olivier Penacchio, Javier Vazquez-Corral, Maria Vanrell, C. Alejandro Parraga
Springer-Verlag, Volume 48, page 47--66 - 2013
 
The effectiveness of disruptive coloration as a concealment strategy   15.pdf
Martin Stevens, Innes Cuthill, C. Alejandro Parraga, Tom Troscianko
Progress in Brain Research, Visual Perception Part 2 - Fundamentals of Awareness: Multi-Sensory Integration and High-Order Perception, Elsevier, Volume 155, page 49--64 - 2006
 
PhD Thesis
Is the Human visual sytem optimised for encoding the statistical information of natural scenes?   PhDThesis_final.pdf
C. Alejandro Parraga
PhD thesis from University of Bristol, England - 2003
Spatiochromatic information content of natural scenes   MSc_Thesis (Bristol 1995).pdf
C. Alejandro Parraga
Master thesis from University of Bristol, England - 1995

81 publications
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