コンポーネントTV信号の適応的DPCM符号化に.おけるレート制御法の検討 :

概要

論文の詳細を見る
Formerly we proposed prebuffering-control-based adaptive DPCM coding which extracted statistics of component TV signals from only eight lines in the current field. This paper describes three kinds of new rate control methods, all of which extract statistics from TV signals in one field. The first and the second ones conduct the rate control in every field and in every eight lines respectively by utilizing TV signals in the whole current field. On the other hand, the third one conducts the rate control in every eight lines by utilizing not only the current field but the next field. Simulation results confirm us that the third one has superiority over the others in SNR and degree of accordance between the average coding rate and the designated coding rate, especially in the case of scene changes.
社団法人映像情報メディア学会の論文
1992-07-10