Interdigital Vc Holdings, Inc.

Interdigital Ce Patent Holdings, Sas

Thomson Licensing

Guillaume Poirier

David Touze

Mozhdeh Seifi

Erik Reinhard

Tania Pouli

Marie-Jean Colaitis

Laurent Cauvin

Frederic Plissonneau

A method for correcting a SDR video in a SL-HDR1 system comprising identifying samples of a SDR picture the chroma components values of which risking to be clipped during a SL-HDR1 process; and, correcting the identified samples to prevent from the clipping before a generation of a HDR picture from the SDR picture.

Method for correcting SDR pictures in a SL-HDR1 system

Aspects of present principles are directed to methods and apparatus for tone mapping a high dynamic range image. The apparatus includes a processor for performing the following and the method includes the following: obtaining a luminance component of the high dynamic range image; determining an HDR to HDR tone mapper curve; determining a tone compressed image by applying the HDR to HDR tone mapper curve to the luminance component of the high dynamic range image; wherein the HDR to HDR tone mapper curve comprises a first part for dark and mid-tone levels, and a second part for highlights.

Methods, apparatus, and systems for extended high dynamic range ('HDR') HDR to HDR tone mapping

The present principles relate to a method and a device for reducing noise in a component of a picture. The method includes obtaining a low-pass filtered component by low-pass filtering the component of the picture, for a current pixel in the component of the picture. For at least one current neighboring pixel of the current pixel, computing a distance, relative to the current neighboring pixel, between the value of the current pixel in the low-pass filtered component and the value of the current neighboring pixel in the low-pass filtered component. When the distances relative to the at least one neighboring pixels of the current pixel are lower than a first threshold, modifying the value of the current pixel in said component of the picture according to a linear combination of the value of the current pixel in the component of the picture and the value of the current pixel in the low-pass filtered component. Otherwise the value of the current pixel in the at least one component of the picture remains unchanged.

Method and device for reducing noise in a component of a picture

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Rennes, France

Guillaume Poirier