What is the TM rate control and adaptive quantization technique ?
A. The Test model (MPEG-2) and Simulation Model (MPEG-1) were not, by any stretch of the imagination, meant to epitomize state-of-the art encoding quality. They were, however, designed to exercise the syntax, verify proposals, and test the relative compression performance of proposals in a timely manner that could be duplicated by co-experimenters. Without simplicity, there would have been no doubt endless debates over model interpretation. Regardless of all else, more advanced techniques would probably trespass into proprietary territory. The final test model for MPEG-2 is TM version 5b, a.k.a. TM version 6, produced in March 1993 (the time when the MPEG-2 video syntax was “frozen”). The final MPEG-1 simulation model is version 3 (“SM-3”). The MPEG-2 TM rate control method offers a dramatic improvement over the SM method. TM adds more accurate estimation of macroblock complexity through use of limited a priori information. Macroblock quantization adjustments are computed on a macroblo
Test model was not by any stretch of the imagination meant to be the show-stopping, best set of algorithm. It was designed to exercise the syntax, verify proposals, and test the *relative* performance of proposals in a way that could be duplicated by co-experimentors in a timely fashion. Otherwise there would be more endless debates about model interpretation than actual time spent in verification. [MPEG-2 Test model is frozen as v5b] The MPEG-2 Test Model (TM) rate control method offers a dramatic improvement to the Simulation Model (SM) method used for MPEG-1. TM’s improvements are due to more sophistication pre-analysis and post-analysis routines.
A. The Test model (MPEG-2) and Simulation Model (MPEG-1) were not, by any stretch of the imagination, meant to epitomize state-of-the art encoding quality. They were, however, designed to exercise the syntax, verify proposals, and test the *relative* compression performance of proposals in a timely manner that could be duplicated by co- experimenters. Without simplicity, there would have been no doubt endless debates over model interpretation. Regardless of all else, more advanced techniques would probably trespass into proprietary territory. The final test model for MPEG-2 is TM version 5b, aka TM version 6. The final MPEG-1 simulation model is version 3. The MPEG-2 TM rate control method offers a dramatic improvement over the SM method. TM adds more accurate estimation of macroblock complexity through use of limited a priori information. Macroblock quantization adjustments are computed on a macroblock basis, instead of once-per-slice.
