Region-of-interest tracking method and device for

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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