发明申请
- 专利标题: BREAKPOINT DETERMINING FOR HYBRID VARIABLE LENGTH CODING USING RELATIONSHIP TO NEIGHBORING BLOCKS
- 专利标题(中): 使用关联到相邻块的混合可变长度编码的断点确定
-
申请号: US11686898申请日: 2007-03-15
-
公开(公告)号: US20080181299A1公开(公告)日: 2008-07-31
- 发明人: Dihong Tian , Wen-hsiung Chen , Pi Sheng Chang , John A. Toebes
- 申请人: Dihong Tian , Wen-hsiung Chen , Pi Sheng Chang , John A. Toebes
- 主分类号: H04N11/04
- IPC分类号: H04N11/04
摘要:
A method, and apparatus, and logic encoded in one or more computer-readable tangible medium to carry out a method. The method is to code an ordered sequence of quantized transform coefficients of a block of image data using a hybrid coding method that includes determining a breakpoint location in the sequence between a low-frequency region and a high-frequency region; coding the low-frequency region using a selected low-frequency variable length coding method; coding the high-frequency region using a selected high-frequency variable length coding method; and coding the location of the breakpoint. The breakpoint location is determined as a function of properties of neighboring blocks such that little if any information needs to be sent to a decoder about the breakpoint of a block or multi-block partition, and the decoder can use the properties of neighboring blocks to determine the breakpoint used to code a to-be-decoded sequence or sequences of a block or a multi-block partition.
公开/授权文献
信息查询