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：Mohamed Khames Ben Hadj Miled,Fehmi

Chebil

申请号：US10293976申请日：20021112

公开号：US20040091158A1公开日：20040513

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

更多信息请下载全文后查看