Fast renormalization for H.264/MPEG4-AVC arithmetic coding
Detlev Marpe, Heiner Kirchhoffer, Gunnar Dipl.-Ing. Marten · 2006
We propose a fast, standard-compliant realization of the computationally expensive renormalization part of the bi-nary arithmetic coder in H.264/MPEG4-AVC. Our tech-nique allows to replace time-consuming, bitwise-operating input and output procedures as well as bitwise carry-over handling in a conventional implementation with correspond-ing operations in units of multiple bits. Experimental results demonstrate that the proposed method enables a consider-able speed-up of both arithmetic encoding and decoding in the range of 24–53 % of their corresponding run time. 1.