Koninklijke Philips Corporation N.v.

Martin Hammer

Mark Jozef Willem Mertens

Chris Damkat

Philip Steven Newton

Gerard De Haan

Remco Muijs

Wilhelmus Hendrikus Alfonsus Bruls

Remco Theodorus Johannes Muijs

Cornelis Wilhelmus Kwisthout

To allow better quality rendering of video on any display, a method is proposed of encoding, in addition to video data (VID), additional data (DD) comprising at least one change time instant (TMA_) indicating a change in time of a characteristic luminance (CHRLUM) of the video data, which characteristic luminance summarizes the set of luminances of pixels in an image of the video data, the method comprising:

Apparatuses and methods for improved encoding of images for better handling by displays

A method is proposed of encoding a change time The change time indicates a change in time of a characteristic luminance of the video data. The characteristic luminance summarizes the set of luminances of pixels the video data. The encoding of the time variation of the characteristic luminance provides a more compact and accurate storage and transmission of content.

A method and apparatus analyze a difference of at least two gradings of an image on the basis of: obtaining a first graded picture (LDR) with a first luminance dynamic range; obtaining data encoding a grading of a second graded picture (HDR) with a second luminance dynamic range, different from the first luminance dynamic range; and determining a grading difference data structure (DATGRAD) on the basis of at least the data encoding the grading of the second graded picture (HDR), which allows more intelligently adaptive encoding of the imaged scenes, and consequently also better use of those pictures, such as higher quality rendering under various rendering scenarios.

Apparatus and methods for analyzing image gradings

This invention provides a process which allows better quality rendering of video on any display. The process proposes encoding, video data and additional data. The additional data includes a change time instant. The change time instant can be used to indicate a change in time of a characteristic luminance. The characteristic luminance summarizes the set of luminances of pixels in an image of the video data. The process includes generating on descriptive data based on the video data and encoding and outputting the descriptive data as additional data.

The method of analyzing a difference of at least two gradings of an image on the basis of: obtaining a first graded picture (LDR) with a first luminance dynamic range; obtaining data encoding a grading of a second graded picture (HDR) with a second luminance dynamic range, different from the first luminance dynamic range; determining a grading difference data structure (DATGRAD) on the basis of at least the data encoding the grading of the second graded picture (HDR), allows more intelligently adaptive encoding of the imaged scenes, and consequently also better use of those pictures, such as higher quality rendering under various rendering scenarios.

Apparatuses and methods for analyzing image gradings

A system and method of processing video data: produce, on the basis of the video data, descriptive data regarding a variation in a characteristic luminance of the video data, wherein the characteristic luminance summarizes the set of luminances of pixels in an image of the video data, wherein the descriptive data identifies the at least one change time instant, wherein the change time instant indicates a time at which a change of the characteristic luminance occurs; and encode and output the descriptive data.

To allow better quality rendering of video on any display, a method is proposed of encoding, in addition to video data (VID), additional data (DD), wherein the additional data includes at least one change time instant (TMA_) indicating a change in time of a characteristic luminance (CHRLUM) of the video data, which characteristic luminance summarizes a set of luminances of pixels in an image of the video data, the method:

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Arendonk, Belgium

Martin Hammer