Research on the Integer-to-Integer WT-Based Color Image Retrieval Method
基于整数小波变换的彩色图象检索技术的研究

This paper presents a method of image multi scale retrieval. That is by means of wavelet transform, which firstly decomposes an image in multi scale, which yields a scalable coefficient matrix; secondly determines the F norms of all the ordinal sub matrixes of the scalable coefficient matrix; and then defines the features and similarities of images by the F norms; finally uses these similarities index images. But in order to speed up the computation, this paper only deals with the Integer to Integer Wavelet Transform, the main advantages of which are: all the calculations can be done in place; the input and output values are all integers; and only a small memory is required. Additionally, the feature vector based on F norm is low in dimension, and efficient in retrieval. The experimental results of a database of about 200 color images of flower and mount show this algorithm can well capture the scale and color information of images and can lead to better results.