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US 10,567,811 B2Granted
Method and device for transmitting and receiving broadcast signal on basis of color gamut resampling
AssigneeLG Electronics Inc.
InventorsHyunmook Oh, Jongyeul Suh, Soojin Hwang
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Abstract
A method and/or a device transmits and receives a broadcast signal on the basis of color gamut resampling. The method for transmitting a broadcast signal, according to one embodiment comprises the steps of: resampling first color gamut-based content data into second color gamut-based content data: generating signaling information which includes color gamut resampling information indicating information on the resampling; respectively.
Claims12
An image encoding method, comprising:
- remapping an input image based on a first color space into an image based on a second color space;
- generating color remapping information on the remapping,
- wherein the color remapping information includes coefficients information representing three-by-three color remapping matrix coefficients used for the remapping,
- wherein the color remapping information further includes indication information whether the coefficients information is present in the color remapping information,
- encoding the generated color remapping information and the image based on the second color space,
- wherein the color remapping information further includes color primaries information for defining the second color space for the remapped image,
- wherein the color primaries information indicates red (R), green (G) and blue (B) primaries of the color space of the remapped image,
- wherein the color remapping information further includes a first mapping information for converting values of color components in a color space of the input image into values of color components in a reference color space,
- wherein the color remapping information further includes a second mapping information for converting the values of the color components in the reference color space into values of color components in the color space of the remapped image.
6 more elements
An image decoding method, comprising:
- receiving a video stream including color remapping information;
- decoding the color remapping information,
- wherein the color remapping information includes coefficients information representing three-by-three color remapping matrix coefficients,
- wherein the color remapping information further includes indication information whether the coefficients information is present in the color remapping information;
- and
- decoding an image from the video stream,
- wherein the color remapping information further includes color primaries information for defining a color space for a remapped image,
- wherein the color primaries information indicates red (R), green (G) and blue (B) primaries of the color space of the remapped image,
- wherein the color remapping information further includes a first mapping information for converting values of color components in a color space of the decoded image into values of color components in a reference color space,
- wherein the color remapping information further includes a second mapping information for converting the values of the color components in the reference color space into values of color components in the color space of the remapped image.
7 more elements
An apparatus for image decoding, comprising:
- a receiver configured to receive a video stream including color remapping information;
- and
- a decoder configured to decode the color remapping information, wherein the color remapping information includes coefficients information representing three-by-three color remapping matrix coefficients, wherein the color remapping information further includes indication information whether the coefficients information is present in the color remapping information, and to decode an image from the video stream,
- wherein the color remapping information further includes color primaries information for defining a color space for a remapped image,
- wherein the color primaries information indicates red (R), green (G) and blue (B) primaries of the color space of the remapped image,
- wherein the color remapping information further includes a first mapping information for converting values of color components in a color space of the decoded image into values of color components in a reference color space,
- wherein the color remapping information further includes a second mapping information for converting the values of the color components in the reference color space into values of color components in the color space of the remapped image.
4 more elements
Dependencies are inferred from the claim text.