摘要
本文从一般特征矩的定义入手,导出极坐标系下图像的小波矩,进而给出对图像进行多分辨小波变换后,利用任一尺度下的逼近系数构造小波矩和基于小波模极大值边界图像构造小波矩两种方法。最后,经实验验证了本文构造图像小波矩方法的有效性。
Beginning with the definition of the common character moment, image wavelet moment in polar coordinates is given, and two algorithms is presented, from which one is to express the wavelet moment with the coefficients of wavelet approximation at each scale and the other is to extract image wavelet moment through multi-scale edge images with wavelet modulus maximum. At last, the effectiveness of these algorithms is verified by some experiments.
出处
《电路与系统学报》
CSCD
北大核心
2005年第6期132-136,共5页
Journal of Circuits and Systems
关键词
小波矩
矩不变量
小波变换
多分辨分析
wavelet moment
moment invariants
wavelet transform
multiresolution analysis
