发明名称 |
Methods and systems for determining data-adaptive weights for motion estimation in a video sequence |
摘要 |
Aspects of the present invention are related to systems and methods for determining local-analysis-window size and weighting parameters in a gradient-based motion estimation system. |
申请公布号 |
US9307251(B2) |
申请公布日期 |
2016.04.05 |
申请号 |
US200912543597 |
申请日期 |
2009.08.19 |
申请人 |
Sharp Laboratories of America, Inc. |
发明人 |
Van Beek Petrus J. L.;Xu Xinyu |
分类号 |
H04N7/12;H04N19/14;G06T7/00;G06T7/20;H04N19/196;H04N19/17;H04N19/57 |
主分类号 |
H04N7/12 |
代理机构 |
Law Office of Gerald Maliszewski |
代理人 |
Law Office of Gerald Maliszewski ;Maliszewski Gerald |
主权项 |
1. A method for determining data-adaptive weights in a motion
estimation system, said method comprising: selecting, in a computing system associated with a motion estimation system, a size of a local analysis window based on a local structural variation in a current image and a noise estimate associated with said current image; receiving a plurality of image pixel values associated with said local analysis window in said current image; identifying a window-center image pixel value associated with a window center location in said local analysis window; calculating a weight associated with a first location in said local analysis window based on a difference between said window-center image pixel value and an image pixel value associated with said first location; and performing gradient-based motion estimation using said weight to estimate a motion vector at said window center location. |
地址 |
Camas WA US |