US 2016/0105657 A1 · HARMONIZATION OF CROSS-COMPONENT PREDICTION AND ADAPTIVE COLOR TRANSFORM IN VIDEO CODING

Abstract

A video coder transforms, based on a difference between a bit depth of an initial luma sample and a bit depth of initial chroma samples, a set of initial samples to a set of modified samples. The set of initial samples may include the initial luma sample and the initial chroma samples. The initial chroma samples may include an initial Cb sample and an initial Cr sample. The set of modified samples may include a modified luma sample and modified chroma samples. The modified chroma samples may include a modified Cb sample and a modified Cr sample. Additionally, the video coder adds the modified samples to corresponding samples of a predictive block to produce reconstructed samples.

Claims23

Dependent claims

A method of decoding video data, the method comprising:

transforming, based on a difference between a bit depth of an initial luma sample and a bit depth of initial chroma samples, a set of initial samples to a set of modified samples, the set of initial samples including the initial luma sample and the initial chroma samples, the set of modified samples including a modified luma sample and modified chroma samples;
and
adding the modified samples to corresponding samples of a predictive block to produce reconstructed samples of the video data.

A device for coding video data, the device comprising:

a data storage medium configured to store the video data;
and
one or more processors configured to:
transform, based on a difference between a bit depth of an initial luma sample and a bit depth of initial chroma samples, a set of initial samples to a set of modified samples, the set of initial samples including the initial luma sample and the initial chroma samples, the set of modified samples including a modified luma sample and modified chroma samples;
and
add the modified samples to corresponding samples of a predictive block to produce reconstructed samples of the video data.

3 more elements

A device for coding video data, the device comprising:

means for transforming, based on a difference between a bit depth of an initial luma sample and a bit depth of initial chroma samples, a set of initial samples to a set of modified samples, the set of initial samples including the initial luma sample and the initial chroma samples, the set of modified samples including a modified luma sample and modified chroma samples;
and
means for adding the modified samples to corresponding samples of a predictive block to produce reconstructed samples of the video data.

A computer-readable storage medium having stored thereon instructions, that when executed, cause a device for coding video data to:

transform, based on a difference between a bit depth of an initial luma sample and a bit depth of initial chroma samples, a set of initial samples to a set of modified samples, the set of initial samples including the initial luma sample and the initial chroma samples, the set of modified samples including a modified luma sample and modified chroma samples;
and
add the modified samples to corresponding samples of a predictive block to produce reconstructed samples of the video data.

Dependencies are inferred from the claim text.

Harmonization of cross-component prediction and adaptive color transform in video coding

Life of this patent

Harmonization of cross-component prediction and adaptive color transform in video coding

Life of this patent

Abstract

Claims23