VECTOR QUANTIZATION METHOD, IMAGE INFORMATION COMPRESSION METHOD, SOUND INFORMATION COMPRESSION METHOD, COMPRESSED IMAGE INFORMATION RECORDING MEDIUM, COMPRESSED IMAGE INFORMATION REPRODUCING DEVICE AND COMPRESSED IMAGE INFORMATION COMMUNICATION EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To obtain the vector quantization method, image information compression method or the like for compressing image information, especially image information at a high compression rate by adopting the method capable of generating a general-purpose code book practically and to obtain the medium and equipment for recording, reproducing and communicating the compressed image information using the method. SOLUTION: Each image frame constituting moving image information is divided into a key frame and a motion compensation frame, a block of the key frame is divided and an image pattern of each block is subject to vector quantization by using a self-organization characteristic mapping algorithm. Furthermore, as to the motion compensation frame, the motion vector is decided to each block and the motion vector pattern of the block being a component of a large block is normalized by using the self-organization characteristic mapping algorithm to conduct vector quantization. On the other hand, a representative vector representing the obtained motion vector is decided and a general-purpose code book for vector quantization of the motion compensation frame is generated.