发明名称 |
Video coding apparatus, video coding method and storage medium containing video coding program |
摘要 |
In a video coding apparatus coding a motion picture while switching a coding mode between an INTER coding mode and an INTRA coding mode, a motion information management part determines whether or not there is motion exceeding a prescribed threshold in an object in each region of m groups of blocks in each frame of the motion picture during a lapse of a prescribed time T from a prescribed point. On the basis of the result of this determination, a whole-group refresh part performs whole-group refresh (INTRA coding in one frame) on a group of blocks of a region having motion exceeding the threshold, and a dispersed refresh part performs dispersed refresh (INTRA coding in frames varying with the block) on a group of blocks of a region having no motion exceeding the threshold. Thus, appearance of a disturbance line is avoided and influence by a transmission error is eliminated in a short time while reducing increase of a coding quantity resulting from refresh.
|
申请公布号 |
US6333948(B1) |
申请公布日期 |
2001.12.25 |
申请号 |
US19990247081 |
申请日期 |
1999.02.09 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
KUROBE AKIO;MASAKI SHOICHI |
分类号 |
H04N7/26;H04N7/36;H04N7/50;(IPC1-7):H04N7/36 |
主分类号 |
H04N7/26 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|