Patent ID: 11956425
Assignee: B1 INSTITUTE OF IMAGE TECHNOLOGY, INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. A method of encoding an image, comprising:
determining whether a color copy mode is supported for a current chroma block in the image and encoding first information indicating whether the color copy mode is supported;
determining, in case the color copy mode is supported, whether the color copy mode is applied for the current chroma block in the image;
down-sampling a luma block corresponding to the current chroma block in response to the determination that the color copy mode is applied for the current chroma block;
determining correlation information for the color copy mode based on a pre-determined reference region;
predicting the current chroma block by applying the correlation information to the down-sampled luma block to generate a prediction block of the current chroma block;
generating a residual block of the current chroma block based on the prediction block;
generating a transform coefficient for the current chroma block by transforming a coefficient for the current chroma block; and
encoding the transform coefficient into a bitstream,
wherein the reference region includes at least one of a neighboring region of the current chroma block or a neighboring region of the luma block, and
wherein a number of reference pixel lines belonging to the reference region used for the deriving of the correlation information is adaptively determined based on a determination of whether the current chroma block is located on a boundary of a maximum coding block.