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- W3033908930 abstract "This paper proposes a rate control (RC) algorithm for intra-coded sequences (I-frames) within the context of block-based predictive transform coding that departs from using trained models to approximate the rate-distortion (R-D) characteristics of the video sequence. Our algorithm employs piecewise linear approximations of the rate-distortion (R-D) curve of a frame at the block-level. Specifically, it employs information about the rate and distortion of already compressed blocks within the current frame to linearly approximate the slope of the R-D curve of each block. The proposed algorithm is implemented in the High-Efficiency Video Coding (H.265/HEVC) standard and compared with its current RC algorithm, which is based on a trained model. Evaluations on a variety of intra-coded sequences show that the proposed RC algorithm not only attains the overall target bit rate more accurately than the RC algorithm used by H.265/HEVC algorithm but is also capable of encoding each I-frame at a more constant bit rate according to the overall bit budget." @default.
- W3033908930 created "2020-06-12" @default.
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- W3033908930 date "2020-03-01" @default.
- W3033908930 modified "2023-09-24" @default.
- W3033908930 title "Model-Independent Rate Control for Intra-Coding Based on Piecewise Linear Approximations" @default.
- W3033908930 cites W2089251505 @default.
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- W3033908930 doi "https://doi.org/10.1109/dcc47342.2020.00081" @default.
- W3033908930 hasPublicationYear "2020" @default.
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