利用改进的8 方向链码编码对视频对象运动 轨迹进行编码，重点突出了对象运动的变化特征，同时采用归一化编码技术，增强了改进编码方法对尺度和旋转变换的鲁棒性。最...

利用改进的8 方向链码编码对视频对象运动 轨迹进行编码，重点突出了对象运动的变化特征，同时采用归一化编码技术，增强了改进编码方法对尺度和旋转变换的鲁棒性。最后采用编辑距离来度量运动轨迹的相似性测度.-8 the direction of improved chain code encoding of video object trajectories encode highlighted changes in the characteristics of the object movement, while the use of the normalized coding techniques to enhance the coding method to improve the scale and rotation transformation of robustness. Finally the use of edit distance to measure the trajectory of the similarity measure.