摘要: We propose a new framework termed Keyblock for content-based image retrieval, which is generalization of the text-based information retrieval technology in domain. In this framework, methods extracting comprehensive features are provided, based on frequency representative blocks, keyblocks, database. Keyblocks, analogous to index terms text document can be constructed by exploiting vector quantization (VQ) method has been used compression. By comparing performance our approach with existing techniques using color feature and wavelet texture feature, experimental results demonstrate effectiveness retrieval.