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

Claim 18:
19. An encoder, comprising a processor and a memory storing a computer program which, when executed by the processor, causes the processor to:
determine a video flag and a position of a last significant coefficient;
determine a last-significant-coefficient position-reverse flag when the video flag indicates that a video satisfies a preset condition;
determine coordinate information of the last significant coefficient according to the position of the last significant coefficient and the last-significant-coefficient position-reverse flag; and
encode all coefficients before the position of the last significant coefficient according to a preset scanning order, and signal bit information obtained by the encoding, the video flag, and the coordinate information of the last significant coefficient into a bitstream.