A system for processing digital image signals to reduce the effect of quantizing noise in the images represented by the signals. An n-bit image signal is converted into an m-bit image signal (m>n). The high frequency content of the m-bit signal is estimated and then first and second multipliers are derived...http://www.google.fr/patents/US6381373?utm_source=gb-gplus-shareBrevet US6381373 - Apparatus and method for reducing quantization error in digital image signals
Apparatus and method for reducing quantization error in digital image signals
