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基于这些旋转不变量给出了一种形状相似性度量。
A shape similarity measure is defined on the extracted rotation invariants.
它最初作为一种关键点的特征提出来的，其主要思想是在尺度空间寻找极值点，提取位置，尺度，旋转不变量；
The main idea is to find extreme value in the scale space, extracting location, scale and rotation invariant.
矩不变量在图像进行平移、旋转和尺度变换时保持定值，因此被广泛使用在目标识别、图像分类、图像压缩和场景匹配等各种领域。
The invariable moment, which is invariable to the translation, scaling and rotation of image, is widely used in object recognition, image classification, image condensation, scene matching and so on.
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