Performance enhancement of H.263 encoder based on zero coefficient prediction

Abstract

In this paper, we propose a method that reduces the computational requirements of the encoder, while still upholding picture fidelity and remaining compatible with the H.263 bitstream standard. Our method is motivated by our observation that, often, a substantial number of inter-macroblocks in the encoder are reduced to all-zero values after quantization. We have developed a method of predicting when those macroblocks will quantize to zeros, which in turn allows us to eliminate the computation that would normally be required for those macroblocks. For our performance studies, we utilized the latest software version of H.263 written by Telenor Permission 10 t~~~ke digit:dhrd copies ofnll or pa11 ofthis mnterinl for