Thomson Licensing

Hasan Sheikh Faridul

Jurgen Stauder

Emmanuel Jolly

Vincent Demoulin

Jürgen Stauder

The present invention generally relates to a method and arrangement for estimating said at least one cross-channel color mapping model from a set of tuples of corresponding colors relative to at least two images. The method is characterized in that it uses a processor for selecting at least one intermediate tuple of corresponding colors from the set of tuples of corresponding colors by using at least one channel-wise color mapping model, and for estimating the at least one cross-channel color mapping model from the at least one intermediate selected tuple of corresponding colors.

Method and arrangement for estimating at least one cross-channel colour mapping model from an set of tuples of corresponding colours relative to at least two images

A method and an arrangement for color transfer between images for compensating color differences between at least two images as a first and a second image represented by pixel data are recommended, wherein for corresponding feature points of the images a color map and a geometric map are calculated for compensating a first image by applying said geometric map and said color map to the first image resulting in a compensated first image for detecting regions where a compensation fails by comparing the compensated first image with the second image to perform a color transfer excluding image regions where the compensation failed. The method can be performed on the fly and is applicable for equalizing color differences between images different in geometry and color.

Method and apparatus for color transfer between images

In accordance with an exemplary embodiment, a method is provided to generate a color look up table for multiple images. The method includes selecting color points from a first image. The first color points comprise weak image texture. The method also includes identifying feature points in a spatial neighborhood of each first color point. Additionally, the method includes identifying feature points from a second image. The second feature points correspond to the first feature points. The method also includes determining a color points in the second image. The second color points correspond to the first color points, and are determined using a spatial interpolation of the first plurality of color points from the first plurality of feature points and then applying the obtained spatial interpolation to the second plurality of feature points. Further, the method includes generating the color lookup table.

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Cesson-Sevigne, France

Hasan Sheikh Faridul