Title :
Weighted optimum bit allocations to orthogonal transforms for picture coding
Author_Institution :
Philips Res. Lab. Belgium, Louvain-La-Neuve, Belgium
fDate :
6/1/1992 12:00:00 AM
Abstract :
The classical optimization criterion used is the signal-to-(quantization) noise ratio (SNR). A general quantization methodology is developed which is based on the optimization of a frequency-weighted SNR: first, a quality criterion based on the weighted SNR is derived from the CCIR (Comite Consultatif International de Radiodiffusion) curves for analog TV: then, a methodology for optimizing the quantization is derived in a general form
Keywords :
encoding; picture processing; transforms; CCIR; analog TV; frequency-weighted SNR; orthogonal transforms; picture coding; weighted optimum bit allocations; Bit rate; Discrete cosine transforms; Filtering; Fourier transforms; Frequency; Optimization methods; Quantization; Signal to noise ratio; TV; Transform coding;
Journal_Title :
Selected Areas in Communications, IEEE Journal on
