Back to results
US 10,944,976 B2Granted
Systems and methods for coding video data using adaptive component scaling
AssigneesSharp Kabushiki Kaisha, FG Innovation Company Limited
InventorsJie Zhao, Seung-Hwan Kim, Kiran Mukesh Misra, Christopher Andrew Segall
Life of this patent
Estimating the term…
Abstract
A method of encoding and decoding video data is described. According to an aspect of an invention, luma and chroma components may have separate quadtree plus binary tree (QTBT) structures and a scaling parameter for a chroma coding block is determined based on one or more properties of a luma component.
Claims4
A method of decoding video data, the method comprising:
- parsing a slice level flag indicating chroma scaling is applied to a current chroma coding block, wherein the current chroma coding block has a width and a height that are not required to be equal;
- determining an average luma value for reconstructed luma sample values;
- determining a chroma scaling parameter according to a look-up table, wherein the look-up table provides the chroma scaling parameter by using the average luma value;
- scaling residual data corresponding to a chroma component of the current chroma coding block by using the determined chroma scaling parameter.
1 more element
A device for decoding video data, the device comprising one or more processors configured to:
- parse a slice level flag indicating chroma scaling is applied to a current chroma coding block, wherein the current chroma coding block has a width and a height that are not required to be equal;
- determine an average luma value for reconstructed luma sample values;
- determine a chroma scaling parameter according to a look-up table, wherein the look-up table provides the chroma scaling parameter by using the average luma value;
- scale residual data corresponding to a chroma component of the current chroma coding block by using the determined chroma scaling parameter.
1 more element
Dependencies are inferred from the claim text.