专利名称:Region-of-interest tracking method and
device for wavelet-based video coding
发明人:Miled, Mohamed Khames Ben Hadj,Chebil,
Fehmi
申请号:EP11183179.8申请日:20031107公开号:EP2405382A1公开日:20120111
专利附图:
摘要:A method and device for tracking a region-of-interest in a sequence of imageframes, 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 everypixel in the search area in the current frame, a search window is established in theprevious frame so as to find a matched pixel within the search window. If the matchedpixel is within the ROI of the previous frame, then the corresponding pixel in the currentframe is preliminarily considered as a pixel within the ROI of the current frame. Thisbackward matching is carried out using a low pass subband in the wavelet domain. Thepreliminary ROI in the current frame is then refined using edge detection in a highfrequency subband.
申请人:Nokia Corporation
地址:Keilalahdentie 4 02150 Espoo FI
国籍:FI
代理机构:Cohausz & Florack
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