Rate Control for Hevc Intra-Coding Based on Piecewise Linear Approximations

Abstract

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Model-Independent Rate Control for Intra-Coding Based on Piecewise Linear Approximations

“…These linear relations are used to compute the QP value of the current block and drive the encoding process. The algorithm is implemented in the High-Efficiency Video Coding (H.265/HEVC) standard (HM16.8 [1]) and compared against its current R-λ algorithm and our work in [2]. We use the AI profile and a largest coding unit (LCU) of 64×64 samples on the Luma component of various 8-bpp sequences.…”

Rate Control for Predictive Transform Screen Content Video Coding Based on RANSAC

“…R Ate control (RC) methods are important to efficiently constraint the bit rate during video coding to satisfy any channel bandwidth, end-to-end delay or storage requirements [1][2][3]. In essence, RC aims at minimizing the distortion of the coded video data subject to a bit rate constraint.…”

“…This paper proposes a low-complexity RC method that leverages the availability of information about the R-D characteristics of previously coded blocks within a frame based on the promising results obtained in [3]. Our RC method Copyright ©20xx IEEE.…”

“…The method then linearly approximates the R-D and Rate-QP (R-QP) curves of each block based on a set of control points and computes the appropriate QP value to attain a target bit rate with the minimum distortion possible. Compared to our previous work in [3], our RC method presents four main contributions. First, it incorporates a frame-level bit allocation strategy specifically tailored for SC sequences.…”

Universal Modeling of Monoscopic and Multiview Video Codecs with Applications to Encoder Control

“…For other approaches to rate control, a rate model was proposed, linking ρ with the bitrate (ρ-R model) in [14,15], where ρ is the percentage of zeroes among quantized transform coefficients. In [16,17], an R-λ model was used, where λ denotes the slope of the R-D (rate-distortion) curve.…”