Thomson Licensing

Dolby Laboratories Licensing Corporation

Interdigital Vc Holdings, Inc.

Thomson Licensing S.a.

Interdigital Ce Patent Holdings

Dolby International Ab

Emmanuel Jolly

Philippe Bordes

Pierre Andrivon

Hassane Guermoud

Jurgen Stauder

Didier Doyen

Laurent Blonde

Jonathan Kervec

Laurent Blondé

Hasan Sheikh Faridul

Jean-Pierre Bertin

Luis Montalvo

Corinne Poree

Didler Doyen

A method for encoding a LUT defined as a lattice of vertices is disclosed. At least one value is of each vertex of the lattice. The method comprises for a current vertex:

Method for encoding and method for decoding a LUT and corresponding devices

A method includes encoding a first message including first parameters for a first color transform that transforms a video signal into a first color-mapped video signal; encoding a second message including second parameters for a second color transform that transforms the video signal into a second color-mapped video signal; and encoding the video signal, the first message, and the second message in a video bitstream. A method includes decoding the video bitstream into the video signal, the first message including the first parameters, and the second message including the second parameters, and performing at least one of the following: displaying the video signal; transforming the video signal into the first color-mapped video signal by applying the first color transform and displaying the first color-mapped video signal; and transforming the video signal into the second color-mapped video signal by applying the second color transform and displaying the second color-mapped video signal.

Method for encoding and method for decoding a color transform and corresponding devices

A method includes encoding target parameters describing characteristics for a target color space for a video picture to be displayed in the target color space and encoding color transform parameters that facilitate remapping the video picture to the target color space. A method includes decoding target parameters describing characteristics for a target color space for a video picture to be displayed in the target color space, decoding color transform parameters that facilitate remapping the video picture to the target color space, remapping the video picture to the target color space utilizing at least one of the decoded color transform parameters, and displaying the remapped video picture in the target color space. The color transform parameters represent at least three successively applied color transforms comprising a first color transform followed by a second color transform followed by a third color transform. Related apparatus for each method are described.

A method for encoding a colour transform is disclosed that comprises encoding first parameters representative of video signal characteristics of colour output decoded pictures remapped by said at least one color transform; and encoding second parameters representative of said at least one colour transform.

A method and apparatus for inverse tone mapping of an LDR image with computer generated imagery components, such components being also called visual effects, are disclosed. The disclosed method includes accessing a first LDR image, the first LDR image being obtained from at least one computer generated imagery component rendered and composited into an LDR reference image or background plate; determining an HDR lighting indication responsive to information extracted from a part of the first LDR image and a respective part of a first intermediate HDR image obtained by applying a first pass inverse tone mapping to the first LDR image; obtaining a second intermediate HDR image by applying a second pass inverse tone mapping to the LDR reference image; obtaining the first HDR image from the computer generated imagery components rendered using HDR lighting indication and composited into the second intermediate HDR image.

Method for inverse tone mapping of an image with visual effects

A method for encoding a colour transform is disclosed that comprises encoding first parameters representative of video signal characteristics of colour output decoded pictures remapped by said at least one color transform and encoding second parameters representative of said at least one colour transform.

Method for encoding and method for decoding a colour transform and corresponding devices

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

The present invention relates to a method for encoding a color transform. The method includes encoding first parameters representative of video signal characteristics of color output decoded pictures remapped by at least one color transform; and encoding second parameters representative of the at least one color transform.

The method comprises the steps of, successively for each image following a preceding image The application of this method to color clustering allows the iterative update of the colors clusters with limited computer resources.

Method of sampling colors of images of a video sequence, and application to color clustering

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

The invention relates to a method for processing a video image for a display device. In order to reduce the visibility of transition regions in the processed image, the method comprises a step of application of a third video pattern to at least one part of the image, the third video pattern resulting from the spatial interleaving of a first video pattern and at least one second video pattern according to a determined model.

Image processing method

The method comprises the following steps: The applications related to video processing using picture movement such as up-conversion of video pace, reduction of motion compensated noise.

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Rennes, France

Emmanuel Jolly