不变矩 matlab程序，有图例，可以运行，可供学不变矩的同学参考。-unchanged moment Matlab procedures, a legend, to run for school students the same moment reference.

实现基于形状的图像检索，使用不变矩的特征提取的方法，并对结果进行分析-Implementation shape-based image retri using moment invariants feature extraction, and the results were analyzed

Hu矩具有旋转、平移、尺度等特性的不变特征，实验采用这个方法提取图像的7个不变矩特征(Hu moment has the invariant characteristics of rotation, translation, scale and other characteristics, the experiment uses this method to extract the image of the seven invariant moments)