Patent ID: 9479780
Filing Date: 2016-10-25
CPC Classification: H04N

Claim Text:
1. A method for encoding video data comprising: receiving, by a computing device, an array of transform coefficients corresponding to a luma component or a chroma component of the video data; selecting, by the computing device, using a shared L1 context derivation process that applies to both the luma component and the chroma component, L1 context models wherein the L1 context models are selected from a shared set of L1 context models that apply to both the luma component and the chroma component and the selecting includes, for each sub-block in the array: encoding, by the computing device, an L1 significance map that includes L1 significance values for sub-blocks in the array using the context models; selecting, by the computing device, using a shared L0 context derivation process that applies to both the luma component and the chroma component, L0 context models wherein the L0 context models are selected from a shared set of L0 context models that apply to both the luma component and the chroma component and the selecting includes, for each sub-block in the array: encoding, by the computing device, an L0 significance map that includes L0 significance values for sub-blocks in the array using the L0 context models.