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- W2008655579 abstract "In this paper, we apply dynamic voltage scaling (DVS) to the matching metric computation (MMC) used within motion estimation (ME) in typical video encoders. Our approach is based on soft DSP concepts. We analyze the effect of ME errors (due to DVS) in overall coding performance. We propose a model for the resulting rate increase (at a given fixed quantization parameter) as a function of input characteristics and input voltage, for given ME algorithm and MMC architecture. This model is validated using simulations. We then compare ME algorithms and MMC architectures, and propose a method for power saving of the ME process that depend on input characteristics and desired coding performance. As an illustration of the potential benefits of allowing computation errors, we show that allowing errors that lead to a small rate increase (about 3%) produces 37% power savings in the ME process, as compared to not using DVS. An essentially error-free DVS approach (no rate penalty) can achieve around 10% power savings." @default.
- W2008655579 created "2016-06-24" @default.
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- W2008655579 date "2007-01-01" @default.
- W2008655579 modified "2023-09-27" @default.
- W2008655579 title "Dynamic Voltage Scaling Algorithms for Power Constrained Motion Estimation" @default.
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- W2008655579 doi "https://doi.org/10.1109/icassp.2007.366182" @default.
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