发明名称 |
Key frame selection |
摘要 |
A system and method that processes video to extract a keyframe-based adequate visual representation. The method utilizes a hierarchical processing technique. The first stage in the hierarchy extracts a chromatic difference metric from a pair of video frames. An initial set of frames is chosen based on the chromatic metric and a threshold. A structural difference measurement is extracted from this initial set of frames. A second threshold is used to select key frames from the initial set. The first and second thresholds are user selectable. The output of this process is the visual representation. The method is extensible to any number of metrics and any number of levels. |
申请公布号 |
US8107015(B1) |
申请公布日期 |
2012.01.31 |
申请号 |
US19970870836 |
申请日期 |
1997.06.06 |
申请人 |
HAMPAPUR ARUN;GORKANI MOJGAN MONIKA;SHU CHIAO-FE;GUPTA AMARNATH;VIRAGE, INCORPORATED |
发明人 |
HAMPAPUR ARUN;GORKANI MOJGAN MONIKA;SHU CHIAO-FE;GUPTA AMARNATH |
分类号 |
H04N7/18;G11B27/28;H04N5/14 |
主分类号 |
H04N7/18 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|