Analysis of the efficiency of snr-scalable strategies for motion compensated video coders (original) (raw)

In this paper. an analysis of the efficiency o f three signal-to-noise ratio (SNR) scalablc strategies for motion compensated video coders and their non-scalable counterpan is presented. After assuming some models and hypotheses with respect to the signals and systems involved, we have obtained the SNR of each coding strategy as a function of the decoding rate. To validate our analysis, we have compared our theoretical results with data from encodings of real video sequences. Results show that our analysis describes qualitatively the pcrformance o f each scalable stratcgy. and therefore. i t can be useful to understand main fratures of each scalable technique and what factors inHucnce their cfficiency.