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3-tier dynamically adaptive power-aware motion estimator for h.264/AVC video encoding

机译:3层动态自适应功率感知运动估计为H.264 / AVC视频编码

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The limitation of energy in portable communication/entertainment devices necessitates the reduction of video encoding complexity. The H.264/AVC video coding standard is one of the latest video codecs and features a complex Motion Estimation scheme that accounts for a major part of the encoder energy [2]. We therefore present a power-aware Motion Estimator for H.264 that adapts at run time according to the available energy level. We perform a set of adaptations at different Processing Stages of Motion Estimation. Our results show that in case of CIF videos (typically used in portable devices; but our approach is equally applicable to other video resolutions too), we achieve an average energy reduction of 52 times and 27 times as compared to UMHexagonS [12] and EPZS [14] respectively. This energy saving comes at the cost of an average loss of only 0.39 dB in Peak Signal to Noise Ratio (PSNR: an objective quality measure) and 23% increase in area (synthesized for 90nm technology).
机译:便携式通信/娱乐设备中的能量的限制需要减少视频编码复杂性。 H.264 / AVC视频编码标准是最新的视频编解码器之一,并具有复杂的运动估计方案,其考虑了编码器能量的主要部分[2]。因此,我们向H.264提出了一种动力感知的运动估计,根据可用能级在运行时适应。我们在运动估计的不同处理阶段执行一组适应。我们的结果表明,如果是CIF视频(通常用于便携式设备;但我们的方法也同样适用于其他视频分辨率),我们达到了与Umhexagons [12]和EPZ相比的平均能量减少了52次和27倍。 [14]分别。这种节能以平均损失的成本为仅为0.39 dB的峰值信噪比(PSNR:客观质量测量)和面积增加23%(为90nm技术合成)。

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