Quantized DCT coefficients Rvu are inputted to a pre-processing unit, in which pre-processed DCT coefficients are obtained by multiplying a quantization/multiplying-term table and the quantized DCT coefficients. The quantization/multiplying-term table are generated by multiplying a multiplying-term corresponding...http://www.google.fr/patents/US6097846?utm_source=gb-gplus-shareBrevet US6097846 - Image processing device with inverse quantization and two dimensional inverse discrete cosine transformation
Image processing device with inverse quantization and two dimensional ...