Patent ID: 11863777
Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A prediction decoding method, comprising:
determining first multiple neighbouring reference samples of a coding block, wherein the first multiple neighbouring reference samples comprise reference samples in a reference row or a reference column neighbouring the coding block;
for the reference row, determining a value of K according to a length of a top side of the coding block and a first preset proportion, or for the reference column, determining the value of K according to a length of a left side of the coding block and a second preset proportion;
determining, from a starting position of the reference row or the reference column, positions corresponding to K reference samples, wherein K is a positive integer;
determining reference sample positions for the second multiple neighbouring reference samples based on sampling intervals, wherein a sampling starting position corresponding to the sampling intervals is indicated by the value of K;
determining second multiple neighbouring reference samples according to the determined positions corresponding to the K reference samples, wherein the second multiple neighbouring reference samples comprise neighbouring reference samples among the first multiple neighbouring reference samples; and
performing prediction decoding on the coding block according to the second multiple neighbouring reference samples,
wherein determining, from the starting position of the reference row or the reference column, the positions corresponding to the K reference samples comprises:
for the reference row, determining, from a leftmost position of the reference row to the right, positions corresponding to K consecutive reference samples; or
for the reference column, determining, down from a topmost position of the reference column, positions corresponding to K consecutive reference samples.