轮廓扩张技术用来追踪变形的轮廓边缘。
Contour relaxation is used to deal with the object deformation frame by frame.
根据玻璃棒图像的特点，使用图像处理技术提取玻璃棒的轮廓边缘信息；
Secondly, based on the characteristics of the image, the image edge of the glass rod is detected.
最后，采用启发式搜索方法连接视频对象轮廓边缘点，进而提取出视频对象。
Finally, we applied heuristic search method to link video object contour's edge points, sequentially extracted video object.
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