The differential invariants are robust to the noise and also invariant to the translation and rotation.
微分不变量具有平移和旋转不变性，并且对噪声具有较强的鲁棒性。
We will use this theory to classify joint invariants and joint differential invariants of some transformation groups.
我们将利用该理论对一些特殊变换群的联合不变量、联合微分不变量进行分类。
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。
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。
The image differential structure information, which can be described by using the differential invariants, is an important method to characterize the image structure information.
图像的微分结构信息是图像结构的一种重要表示方法，可用微分不变量进行描述。
The image differential structure information, which can be described by using the differential invariants, is an important method to characterize the image structure information.
图像的微分结构信息是图像结构的一种重要表示方法，可用微分不变量进行描述。
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