APPARATUS FOR ADAPTIVELY QUANTIZING VECTORS IN IMAGE ENCODING SYSTEM

摘要

According to the present invention, an adaptive vector quantization apparatus of an image encoding system in which image data is divided into predetermined blocks to perform DCT transform, and then subjected to encoding by selectively performing scalar quantization and vector quantization according to whether the corresponding block includes edge components. An edge direction detection unit 201 for detecting an edge direction of a DCT block including an edge component, a plurality of code books storing codes corresponding to the edge direction, and a direction detected by the edge direction detection unit 201. And a vector quantization unit 205 for performing vector quantization using a code book corresponding thereto.