QUANTIZATION CONTROL METHOD FOR IMAGE COMPRESSION APPARATUS

摘要

initializing the quantization step as a preset quantization step; generating new quantization step increased or decreased as much as preset step number by successively varying the preset quantization step as preset step unit according to the compared result with present detected fullness information and earlier prestored fullness by detecting present fullness of the transfer buffer when the information for deciding quantization step is inputted from the transfer buffer; generating the quantized DCT transform coefficient by quantizing the DCT transform coefficient according to the new quantization step or previous preset quantization step.