POWER-AWARE VIDEO DECODING
POWER-AWARE VIDEO DECODING
复制标题
节能视频解码
DOI：
--
复制
发表时间：
2005
期刊：
影响因子：
--
通讯作者：
H. Sips
中科院分区：
文献类型：
--
作者：
J. Pouwelse;K. Langendoen;I. Lagendijk;H. Sips
Multimedia applications targeting battery-operated wearable devices must be power-aware to exploit the capabilities of variable voltage processors. This paper presents a feedback (FB) controller for video decoding that regulates the voltage for individual frames. The decoding complexity of (parts of) individual frames is estimated using a simple frame length decoding time correlation obtained from statistics gathered on the target hardware (StrongARM processor). Experiments with a modified H.263 decoder show that the FB controller closely approaches ( 10%) the optimal case in which each frame is decoded at the minimal frequency/voltage. Furthermore, we observe that incorporating additional complexity information in the video stream will only be useful when the energy consumption of the (fixed) memory subsystem is significantly reduced.
