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- W2000933082 abstract "Previous research has shown that downsampling prior to encoding and upsampling after decoding can improve the rate-distortion (R-D) performance compared with directly coding the original video using standard coding technologies, e.g., JPEG and H.264/AVC, especially at low bit rates. This paper proposes a practical algorithm to find the optimal downsampling ratio that balances the distortions caused by downsampling and coding, thus achieving the overall optimal R-D performance. Given the optimal sampling ratio, dedicated filters for down- and up-sampling are also designed. Simulations show this algorithm improves the R-D performance over a wide range of bit rates, e.g., from 1.0 dB at high bit rates to 2.5 dB at low bit rates." @default.
- W2000933082 created "2016-06-24" @default.
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- W2000933082 date "2012-09-01" @default.
- W2000933082 modified "2023-09-26" @default.
- W2000933082 title "Adaptive downsampling for high-definition video coding" @default.
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- W2000933082 doi "https://doi.org/10.1109/icip.2012.6467512" @default.
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