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| Author |
Danna Xue; Javier Vazquez; Luis Herranz; Yang Zhang; Michael S Brown |
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| Title |
Integrating High-Level Features for Consistent Palette-based Multi-image Recoloring |
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| Year |
2023 |
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Computer Graphics Forum |
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CGF |
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Achieving visually consistent colors across multiple images is important when images are used in photo albums, websites, and brochures. Unfortunately, only a handful of methods address multi-image color consistency compared to one-to-one color transfer techniques. Furthermore, existing methods do not incorporate high-level features that can assist graphic designers in their work. To address these limitations, we introduce a framework that builds upon a previous palette-based color consistency method and incorporates three high-level features: white balance, saliency, and color naming. We show how these features overcome the limitations of the prior multi-consistency workflow and showcase the user-friendly nature of our framework. |
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CIC; MACO |
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Admin @ si @ XVH2023 |
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3883 |
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| Author |
Jaykishan Patel; Alban Flachot; Javier Vazquez; David H. Brainard; Thomas S. A. Wallis; Marcus A. Brubaker; Richard F. Murray |
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| Title |
A deep convolutional neural network trained to infer surface reflectance is deceived by mid-level lightness illusions |
Type |
Journal Article |
| Year |
2023 |
Publication |
Journal of Vision |
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JV |
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| Volume |
23 |
Issue |
9 |
Pages |
4817-4817 |
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A long-standing view is that lightness illusions are by-products of strategies employed by the visual system to stabilize its perceptual representation of surface reflectance against changes in illumination. Computationally, one such strategy is to infer reflectance from the retinal image, and to base the lightness percept on this inference. CNNs trained to infer reflectance from images have proven successful at solving this problem under limited conditions. To evaluate whether these CNNs provide suitable starting points for computational models of human lightness perception, we tested a state-of-the-art CNN on several lightness illusions, and compared its behaviour to prior measurements of human performance. We trained a CNN (Yu & Smith, 2019) to infer reflectance from luminance images. The network had a 30-layer hourglass architecture with skip connections. We trained the network via supervised learning on 100K images, rendered in Blender, each showing randomly placed geometric objects (surfaces, cubes, tori, etc.), with random Lambertian reflectance patterns (solid, Voronoi, or low-pass noise), under randomized point+ambient lighting. The renderer also provided the ground-truth reflectance images required for training. After training, we applied the network to several visual illusions. These included the argyle, Koffka-Adelson, snake, White’s, checkerboard assimilation, and simultaneous contrast illusions, along with their controls where appropriate. The CNN correctly predicted larger illusions in the argyle, Koffka-Adelson, and snake images than in their controls. It also correctly predicted an assimilation effect in White's illusion. It did not, however, account for the checkerboard assimilation or simultaneous contrast effects. These results are consistent with the view that at least some lightness phenomena are by-products of a rational approach to inferring stable representations of physical properties from intrinsically ambiguous retinal images. Furthermore, they suggest that CNN models may be a promising starting point for new models of human lightness perception. |
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MACO; CIC |
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Admin @ si @ PFV2023 |
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3890 |
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| Author |
Trevor Canham; Javier Vazquez; D Long; Richard F. Murray; Michael S Brown |
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| Title |
Noise Prism: A Novel Multispectral Visualization Technique |
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Journal Article |
| Year |
2021 |
Publication |
31st Color and Imaging Conference |
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A novel technique for visualizing multispectral images is proposed. Inspired by how prisms work, our method spreads spectral information over a chromatic noise pattern. This is accomplished by populating the pattern with pixels representing each measurement band at a count proportional to its measured intensity. The method is advantageous because it allows for lightweight encoding and visualization of spectral information
while maintaining the color appearance of the stimulus. A four alternative forced choice (4AFC) experiment was conducted to validate the method’s information-carrying capacity in displaying metameric stimuli of varying colors and spectral basis functions. The scores ranged from 100% to 20% (less than chance given the 4AFC task), with many conditions falling somewhere in between at statistically significant intervals. Using this data, color and texture difference metrics can be evaluated and optimized to predict the legibility of the visualization technique. |
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MACO; CIC |
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Admin @ si @ CVL2021 |
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4000 |
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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 |
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Miscellaneous |
| Year |
1999 |
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Proceedings of the VIII Symposium Nacional de Reconocimiento de Formas y Analisis de Imagenes |
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ADAS;CIC |
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ADAS @ adas @ LBV1999a |
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3 |
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Xavier Roca; Jordi Vitria; Maria Vanrell; Juan J. Villanueva |
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Visual behaviours for binocular navigation with autonomous systems. |
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Miscellaneous |
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1999 |
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Proceedings of the VIII Symposium Nacional de Reconocimiento de Formas y Analisis de Imagenes |
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OR;ISE;CIC;MV |
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BCNPCL @ bcnpcl @ RVV1999a |
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13 |
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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 |
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1999 |
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Barcelona |
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OR;ISE;CIC;MV |
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BCNPCL @ bcnpcl @ RVV1999b |
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41 |
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Robert Benavente; M.C. Olive; Maria Vanrell; Ramon Baldrich |
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| Title |
Colour Perception: A Simple Method for Colour Naming. |
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Miscellaneous |
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1999 |
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Girona |
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CIC |
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CAT @ cat @ BOV1999 |
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47 |
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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. |
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Miscellaneous |
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2001 |
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Teledeteccion, Medio Ambiente y Cambio Global, IX Congreso Nacional de Teledeteccion, 546–550. |
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CIC |
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CAT @ cat @ FON2001 |
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94 |
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Felipe Lumbreras; Joan Serrat; Ramon Baldrich; Maria Vanrell; Juan J. Villanueva |
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| Title |
Color Texture Recognition Through Multiresolution Features |
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Miscellaneous |
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2001 |
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QCAV 2001 International Conference on Quality Control by Artificial Vision, France, 1:114–121. |
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ADAS;CIC |
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ADAS @ adas @ LSB2001 |
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124 |
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Xavier Otazu; J. Nuñez |
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Algoritmo de Clasificacion no Supervisada Basado en Wavelets. |
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Miscellaneous |
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2001 |
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Teledeteccion, Medio Ambiente y Cambio Global, IX Congreso Nacional de Teledeteccion, 437–440. |
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CIC |
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CAT @ cat @ ONu2001 |
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147 |
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Maria Vanrell; Jordi Vitria; Xavier Roca |
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A General Morphological Framework for Perceptual Texture Discrimination based on Granulometries. |
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1993 |
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Technical Workshop on Mathematical Morphology and its Applications to Signal Processing. |
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Barcelona |
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OR;ISE;CIC;MV |
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BCNPCL @ bcnpcl @ VVR1993 |
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154 |
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Maria Vanrell; Felipe Lumbreras; A. Pujol; Ramon Baldrich; Josep Llados; Juan J. Villanueva |
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Colour Normalisation Based on Background Information. |
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2001 |
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Proceeding ICIP 2001, IEEE International Conference on Image Processing |
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ICIP 2001 |
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1 |
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874–877 |
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Grecia. |
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ADAS;DAG;CIC |
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ADAS @ adas @ VLP2001 |
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167 |
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Maria Vanrell; Jordi Vitria |
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Mathematical Morphology, Granulometries and Texture Perception. |
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1993 |
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SPIE International Symposium on Optical Instrumentation and Applied Science (Conference on image Algebra and Morphological image Processing IV). |
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OR;CIC;MV |
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BCNPCL @ bcnpcl @ VaV1993 |
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178 |
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Robert Benavente; Gemma Sanchez; Ramon Baldrich; Maria Vanrell; Josep Llados |
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Normalized colour segmentation for human appearance description. |
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2000 |
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15 th International Conference on Pattern Recognition, 3:637–641. |
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Barcelona. |
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DAG;CIC |
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CAT @ cat @ BSB2000 |
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223 |
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Robert Benavente; Ramon Baldrich; M.C. Olive; Maria Vanrell |
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Colour Naming Considering the Colour Variability Problem. |
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2000 |
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Computacion y Sistemas, 4(1):30–43. |
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CIC |
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CAT @ cat @ BBO2000 |
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242 |
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Xavier Roca; Jordi Vitria; Maria Vanrell; Juan J. Villanueva |
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Visual behaviours for binocular navigation with autonomous systems. |
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Miscellaneous |
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2000 |
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Pattern Recognition and Applications, IOS Press, 134–143. |
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OR;ISE;CIC;MV |
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BCNPCL @ bcnpcl @ RVV2000 |
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245 |
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X. Binefa; Jordi Vitria; Maria Vanrell |
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Reconstruccion tridimensional de imagenes Microscopicas. |
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1992 |
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V Simposium Nacional de Reconocimiento de Formas y Analisis de Imagenes |
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OR;CIC;MV |
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BCNPCL @ bcnpcl @ BVV1992b |
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255 |
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Robert Benavente; Francesc Tous; Ramon Baldrich; Maria Vanrell |
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Statical Modelling of a Colour Naming Space. |
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Miscellaneous |
| Year |
2002 |
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Proceedings of the 1st. European Conference on Colour in Graphics Imaging and Vision: 406–411. |
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no |
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| Call Number |
CAT @ cat @ BTB2002 |
Serial |
289 |
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