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

Claim 17:
18. A non-transitory computer readable storage medium storing program codes which, when executed by a computer, are operable with the computer to perform the following operations:
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 the operations further include:
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.