基于DCT域奇异值分解的图像检索技术

Image Retrieval Technology Based on DCT Domain Using Singular Value Decomposition

提出一种在DCT域获取图像的代数特征——SV特征矢量进行图像检索的方法。在图像解压到量化的DCT域时,提取粗糙纹理矩阵I,对I进行奇异值分解,根据图片库的特点选取部分或全部奇异值表征图像的纹理特征,试验了该特征提取技术在图像检索中的应用。

Proposes a feature extraction technology using SVD from DCT domain in image retrieval.Obtains rough textured matrix I applies SVD in the matrix,applies partial or all of SV according to the characteristic of images as texture feature in image retrieval.