Patent ID: 11924455
Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A coefficient decoding method, applied to a decoder and comprising:
parsing a bitstream to obtain a video flag;
parsing the bitstream to obtain a last-significant-coefficient position-reverse flag and coordinate information of a last significant coefficient when the video flag indicates that a video satisfies a preset condition;
determining a position of the last significant coefficient by calculation with the coordinate information of the last significant coefficient when the last-significant-coefficient position-reverse flag indicates that the position of the last significant coefficient is reversed for a current block; and
decoding, according to a preset scanning order, all coefficients before the position of the last significant coefficient to determine coefficients of the current block.