Predictive multistage vector quantizer design using asymptotic closed-loop optimization

Abstract

This correspondence builds on the asymptotic closed-loop approach to predictive vector quantizer design (Khalil et al. 2001), and extends it to the design of predictive multistage vector quantizers for low bit rate video coding. The design approach resolves longstanding shortcomings, in particular, design stability and empty-cell problems. Simulation results show substantial gains over traditional design approaches.