Patent ID: 11917168
Assignee: ZTE CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. An image decoding method, applied to an application scenario where a multiple palette and pixel string copying manner combining at least two different palette and pixel string copying decoding manners is used to perform copying decoding on an image, wherein a palette and pixel string copying decoding manner is one mixed copying manner that a pixel string copying manner is adopted for part of pixels of a current coding block and a palette coding manner is adopted for part of all pixels of the current coding block, the at least two different palette and pixel string copying coding manners are selected from a group consisting at least two of: a number of sorts of strings, a value range of a parameter, a value range of a copying parameter, a value range of a copying position, a position of a current index or a current pixel, a position of a current sample segment, a position of a reference index or a reference pixel, a position of a reference sample segment, or a copying shape; wherein the method comprises:
parsing a video bitstream to acquire at least one of: a copying manner for palette and pixel string copying decoding, a copying parameter and a new palette color;
generating a palette used when palette and pixel string copying decoding is performed on the current decoding block by using the copying manner, according to the new palette color and a palette color candidate set shared by the at least two different palette and pixel string copying decoding manners; and
performing palette and pixel string copying decoding by using the palette for the current decoding block.