Image indexing using moments and wavelets

被引:114
作者
Mandal, MK
Aboulnasr, T
Panchanathan, S
机构
[1] Department of Electrical Engineering, University of Ottawa, Ottawa, Ont.
基金
加拿大自然科学与工程研究理事会;
关键词
D O I
10.1109/30.536156
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Histogram comparison is a popular technique for image and video indexing, The complexity of the technique can be reduced by representing the histogram by its moments. In this paper, we propose two techniques to improve the performance of basic histogram/moment-based technique. First, we propose to use orthogonal Legendre moments for representing histograms. Since Legendre moments are orthogonal, they provide superior indexing performance compared to regular moments at a similar complexity. Secondly, we propose to compare the histograms of wavelet coefficients at different scales. The wavelet coefficients provide important directional information, and hence improve the performance of the basic histogram-based technique. The proposed scheme can be easily extended to color images and also be integrated into a wavelet-based image coder.
引用
收藏
页码:557 / 565
页数:9
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