发明名称 |
REGION-OF-INTEREST TRACKING METHOD AND DEVICE FOR WAVELET-BASED VIDEO CODING |
摘要 |
A method and device for tracking a region-of-interest in a sequence of image frames, wherein the boundary of the target region of a previous frame is projected onto the current frame so that a search area in the current frame can be established. For every pixel in the search area in the current frame, a search window is established in the previous frame so as to find a matched pixel within the search window. If the matched pixel is within the ROI of the previous frame, then the corresponding pixel in the current frame is preliminarily considered as a pixel within the ROI of the current frame. This backward matching is carried out using a low pass subband in the wavelet domain. The preliminary ROI in the current frame is then refined using edge detection in a high frequency subband. |
申请公布号 |
EP1570413(A4) |
申请公布日期 |
2010.03.24 |
申请号 |
EP20030772435 |
申请日期 |
2003.11.07 |
申请人 |
NOKIA CORPORATION |
发明人 |
MILED, MOHAMED KHAMES BEN HADJ;CHEBIL, FEHMI |
分类号 |
G06K9/00;G06K9/36;G06T7/20;G06T9/00;H04B1/66;H04N5/225;H04N7/24;H04N7/26 |
主分类号 |
G06K9/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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