Quantization Process:Bit Allocation To assign different numbers of bits to represent transform coefficients based on importance of each coefficient: More importance coefficeitns>assign a large number of bits Less importance coefficients>assign a small number of bits or not assign at all 2 Popular bit allocation methods 1.Zonal coding allocate bits based on the basis of maximum variance 2.Threshold coding allocate bits based on maximum magnitudes of coefficients Quantization Process: Bit Allocation To assign different numbers of bits to represent transform coefficients based on importance of each coefficient: - More importance coefficeitns  assign a large number of bits - Less importance coefficients  assign a small number of bits or not assign at all 2 Popular bit allocation methods 1. Zonal coding : allocate bits based on the basis of maximum variance 2. Threshold coding : allocate bits based on maximum magnitudes of coefficients