Once the interest points were detected, the image matching process in an image sequence is performed using local gray-value differential invariants.
在获得了兴趣点之后，利用兴趣点处的局部灰度差分不变量进行序列图像的点特征匹配。
Objective To study the enhancement phases of focal liver lesions with dynamic gray scale sonography and evaluate its value in differential diagnosis of hepatic lesions.
目的：应用动态灰阶超声造影技术研究肝脏占位性病变造影增强的时相变化，评价其在肝肿瘤鉴别诊断中的价值。
Firstly, we detect the points of interest in a pair of images in image sequence, and then match the point set using the gray value differential invariants.
首先在序列的两幅图像中检测兴趣点，并运用灰度差分不变量进行两点集之间的匹配。
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