If the movement is drastic, adopt the wavelet transformation first, then use this method to search block match, which can reduce a great deal of complicated calculating.
在运动非常激烈时，则首先采用小波变换，然后再用本方法进行块匹配搜索，可减少大量复杂的运算量。
Secondly, the method of block-match is used to track the critical feature points.
用块匹配法跟踪了特征区域的关键点；
Secondly, the method of block-match is used to track the critical feature points.
用块匹配法跟踪了特征区域的关键点；
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