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- W1577532874 abstract "As the concept of block level adaptivity becomes an important feature in recent video CODECs, block level adaptive quantization (BLAQ) is being considered in the High Efficiency Video Coding (HEVC) standard. The BLAQ is based on the assumption that each block should have its own quantization parameter (QP), which can adapt to the local content of video sequences much better, and hence the video encoder with adaptive QP can perform a better perceptual quality. However, in the HEVC reference software, the BLAQ is required to obtain a proper QP for each block by the rate distortion optimization (RDO) scheme and so the computational complexity of the encoder increases significantly. In this paper, an improved BLAQ algorithm is proposed to obtain the adaptive QP for each block. The simulation results show that the proposed method can save more bits as well as require lower computational complexity, compared to the traditional method." @default.
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- W1577532874 date "2015-05-01" @default.
- W1577532874 modified "2023-10-05" @default.
- W1577532874 title "Improved block level adaptive quantization for high efficiency video coding" @default.
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- W1577532874 doi "https://doi.org/10.1109/iscas.2015.7168682" @default.
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