Back to results
US 2016/0255360 A1Published application
Decoding device and decoding method, and coding device and coding method
AssigneeSony Corporation
InventorsShinobu HATTORI, Kenichi KANAI, Toshiya HAMADA, Takumi TSURU, Hiroaki ETO
Life of this patent
Estimating the term…
Abstract
There is provided a decoding device including circuitry configured to receive coded data and conversion information, the coded data pertaining to an image having luminance in a first dynamic range and the conversion information pertaining to a conversion of dynamic range of the luminance of the image from the first dynamic range into a second dynamic range; and decode the received coded data so as to generate the image, wherein the conversion uses a knee function.
Claims13
A decoding device comprising:
- circuitry configured to
- receive coded data and conversion information, the coded data pertaining to an image having luminance in a first dynamic range and the conversion information pertaining to a conversion of dynamic range of the luminance of the image from the first dynamic range into a second dynamic range;
- and
- decode the received coded data so as to generate the image,
- wherein the conversion uses a knee function that is defined by at least one knee point, and
- wherein the conversion information includes
- unconverted luminance range information indicating a permilliage of peak luminance level for the image prior to the conversion relative to a normalized luminance level,
- unconverted display luminance information indicating an expected display brightness of peak luminance level for the image prior to the conversion,
- converted luminance range information indicating a permillage of peak luminance level for the image after the conversion relative to the normalized luminance level, and
- converted display luminance information indicating an expected display brightness of peak luminance level for the image after the conversion.
7 more elements
A decoding method of causing a decoding device to perform:
- receiving coded data and conversion information, the coded data pertaining to an image having luminance in a first dynamic range and the conversion information pertaining to a conversion of dynamic range of the luminance of the image from the first dynamic range into a second dynamic range;
- and
- decoding the received coded data so as to generate the image,
- wherein the conversion uses a knee function that is defined by at least one knee point, and
- wherein the conversion information includes
- unconverted luminance range information indicating a permillage of peak luminance level for the image prior to the conversion relative to a normalized luminance level,
- unconverted display luminance information indicating an expected display brightness of peak luminance level for the image prior to the conversion,
- converted luminance range information indicating a permillage of peak luminance level for the image after the conversion relative to the normalized luminance level, and
- converted display luminance information indicating an expected display brightness of peak luminance level for the image after the conversion.
6 more elements
A coding device comprising:
- circuitry configured to
- set conversion information pertaining to a conversion of dynamic range of a luminance of an image from a first dynamic range into a second dynamic range;
- and
- code the image having luminance in the first dynamic range so as to generate coded data,
- wherein the conversion uses a knee function that is defined by at least one knee point, and
- wherein the conversion information includes
- unconverted luminance range information indicating a permillage of peak luminance level for the image prior to the conversion relative to a normalized luminance level,
- unconverted display luminance information indicating an expected display brightness of peak luminance level for the image prior to the conversion,
- converted luminance range information indicating a permillage of peak luminance level for the image after the conversion relative to the normalized luminance level, and
- converted display luminance information indicating an expected display brightness of peak luminance level for the image after the conversion.
7 more elements
A non-transitory computer-readable medium having stored thereon coded data and conversion information, the coded data pertaining to an image having luminance in a first dynamic range and the conversion information pertaining to a conversion of dynamic range of the luminance of the image from the first dynamic range into a second dynamic range, wherein
- when a decoding device decodes the coded data, the decoding device is caused to generate the image based on the decoded data, and also caused to convert, using a knee function that is defined by at least one knee point and based on the conversion information, the dynamic range of the luminance of the image from the first dynamic range into a second dynamic range, and
- wherein the conversion information includes
- unconverted luminance range information indicating a permillage of peak luminance level, for the image prior to the conversion relative to a normalized luminance level,
- unconverted display luminance information indicating an expected display brightness of peak luminance level for the image prior to the conversion,
- converted luminance range information indicating a permillage of peak luminance level for the image after the conversion relative to the normalized luminance level, and
- converted display luminance information indicating an expected display brightness of peak luminance level for the image after the conversion.
3 more elements
Dependencies are inferred from the claim text.