Beta scale dynamic display mapping
AssigneeDolby Laboratories Licensing Corporation
InventorsAjit Ninan, Gregory John Ward
Life of this patent
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Abstract
An input image to be coded into a video signal and a target image are received. The input image and the target image depict same visual content. One or more beta scaling method indicators and one or more sets of one or more beta scale parameters are generated. The one or more beta scaling method indicators indicate one or more beta scaling methods that use the one or more sets of beta scale parameters to perform beta scaling operations on the input image to generate a reconstructed image to approximate the target image. The input image, along with the one or more beta scaling method indicators and the one or more sets of beta scale parameters, is encoded into the video signal for allowing a recipient device of the video signal to generate the reconstructed image.
Claims20
A method comprising:
- receiving an input image to be coded into a video signal and a target image, wherein the input image and the target image depict same visual content;
- generating one or more beta scaling method indicators and one or more sets of one or more beta scale parameters, wherein the one or more beta scaling method indicators indicate one or more beta scaling methods that use the one or more sets of one or more beta scale parameters to perform beta scaling operations on the input image to generate a reconstructed image to approximate the target image and wherein the one or more beta scaling methods and/or the one or more sets of one or more beta scale parameters are individually selected for scaling pixel values or codeword values in different spatial regions of the input image;
- encoding the input image, along with the one or more beta scaling method indicators and the one or more sets of one or more beta scale parameters, into the video signal for allowing a recipient device of the video signal to generate the reconstructed image.
A method comprising:
- decoding, from a video signal, an input image;
- decoding, from the video signal, one or more beta scaling method indicators and one or more sets of one or more beta scale parameters, wherein the one or more beta scaling method indicators indicate one or more beta scaling methods;
- performing beta scaling operations on the input image as specified with the one or more beta scaling method indicators and the one or more sets of one or more beta scale parameters to generate a reconstructed image, wherein the one or more beta scaling methods and/or the one or more sets of one or more beta scale parameters are individually selected for scaling pixel values or codeword values in different spatial regions of the input image;
- causing a display image derived from the reconstructed image to be rendered on a target image display.
Dependencies are inferred from the claim text.