首先，利用二进小波变换检测建筑物边缘，然后通过计算基于小渡的仿射不变量识别建筑物，最后构建了建筑物轮廓模式数据库。
Firstly, dyadic wavelet was used to extract the edge, and then buildings were recognized by computing the affine invariants, In addition, a building recognition pattern database was constructed.
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.
图像不变量特征的提取与构造是模式识别和计算机视觉领域中的关键技术之一。
Extracting or construction of the invariant features is one of the key technologies in the field of pattern recognition and computer vision.
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