An Efficient Rate-Distortion Optimization Method for Low-Delay Configuration in H.265/HEVC Based on Temporal Layer Rate and Distortion Dependence

Yang, Kaifang; Yan, Gao; Ma, Ming; Wu, Hong Ren

doi:10.1109/tcsvt.2019.2896664

Cited by 7 publications

(5 citation statements)

References 19 publications

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“…Specifically, the original HM16.7, the proposed method, the MQP-5 [16], the TD-LMA [23], and the TD-RDO [25] set the input QP as 22, 27,32, and 37. The λ-OBA [34] and the OBA-F [35] set the target bit rate as the four bit rates generated by the original HM16.7 with four different input QPs (22,27,32,37).…”

Section: : For I ← 1 To N Domentioning

confidence: 99%

“…Such a MQP optimization definitely increases the coding complexity substantially depending on the number of QP candidates attempted. Some recently improved RDO methods [18][19][20][21][22] focus on Lagrange multiplier adaptation according to the temporal R-D dependency. In [18], an efficient Lagrange multiplier selection method is presented for HEVC under the RA configuration according to analyze the temporal relationship between distortion and rate.…”

Section: Introductionmentioning

confidence: 99%

“…In [18], an efficient Lagrange multiplier selection method is presented for HEVC under the RA configuration according to analyze the temporal relationship between distortion and rate. In [22], a temporal dependence based RDO method is proposed for HEVC under the LD configuration, where the optimal Lagrange multiplier is estimated by adaptively selecting the scaling factor according to the video motion characteristics at different temporal layers. By only considering the direct distortion propagation, Guo et al [23] proposed a Lagrange multiplier adaptation method based on pre-encoding for HEVC under the LD configuration.…”

Section: Introductionmentioning

confidence: 99%

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Rate-Distortion Optimization Based on Two-Pass Encoding for HEVC

et al. 2021

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Rate-distortion optimization (RDO) is a crucial technique in block-based hybrid video encoders, which determines the coding option for a certain coding unit to achieve optimal rate-distortion (R-D) performance. However, the current RDO, which is implemented into High Efficiency Video Coding (HEVC) test model, i.e., HM, is far from being global optimal as it ignores the interaction among coding options. Recent studies have shown that the dependent RDO methods can improve the coding efficiency of encoders by exploring the R-D dependency among coding units, but these methods do not consider the R-D characteristics of coding units. In this paper, we proposed a two-pass encoding based RDO method, which combines both the R-D dependency and R-D characteristics, to further improve the coding efficiency. First, a frame is encoded with the original HEVC scheme to obtain the R-D model of coding tree units (CTU) and the bit budget of the frame. Second, an optimal equation combines the R-D model and R-D dependency is established to adaptively determine the Lagrange multiplier and quantization parameter (QP) for each CTU. Finally, the current frame is encoded with a new scheme again. Experimental results show that compared with the original HM, the proposed method obtains R-D performance improvements of 5.3% and 5.6% on average under configurations of low-delay B and P frames, respectively.INDEX TERMS Rate-distortion optimization, high efficiency video coding, adaptive Lagrange multiplier, rate-distortion model, temporal dependency.

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Section: : For I ← 1 To N Domentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Rate-Distortion Optimization Based on Two-Pass Encoding for HEVC

et al. 2021

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“…Equation 20is the general rule to describe impact of distortion of one frame on distortion of the other frame. Comparing (16), (18) and (19), the total impact of distortion of p 0 on distortion of its following frames is a combination of direct impact DI dis . In a similar way, TI dis p 1 ,p x is also a combination of direct impact.…”

Section: A Direct Inter-frame Dependencymentioning

confidence: 99%

“…In [16], a dynamic programming based approach was proposed to search for the optimal λ, which showed considerable coding performance. Yang et al [17]- [19] related distortion and bits of L0 with distortion and bits of other layers, and then solved the optimal QP for other layers based on QP of L0. Zhao et al [20] formulated the content adaptive optimal QP problem as a non-linear programming problem and solved it by adaptively updating the RD models for each GOP.…”

Section: Introductionmentioning

confidence: 99%

Sub-Frame Layer Rate Distortion Optimization for High Efficiency Video Coding

Wei

Zhou

et al. 2020

IEEE Access

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This paper proposes a sub-frame layer RDO algorithm to further improve coding performance of low-delay hierarchical prediction structure in High Efficiency Video Coding. In the proposed algorithm, each frame is segmented into two sub-frames according to motion intensity, and a sub-frame layer is taken as a basic optimizing unit. An inter-frame dependency model is proposed to quantify inter-frame dependency of a frame or a sub-frame. The proposed inter-frame dependency model is composed of two parts, Laplace distribution based direct inter-frame dependency model and distortion propagation chain. The direct inter-frame dependency model is used to evaluate dependency caused by direct reference, and the distortion propagation chain shows the relationship between direct reference and indirect reference. With quantified inter-frame dependency, Lagrange optimization is then used to solve the optimal λ-QP pair for each sub-frame layer in frame layer 1 (L1) to frame layer 4 (L4). For frame layer 0 (L0), additional L0 frames are adaptively inserted according to inter-frame dependency of the previous L0 frame, and the optimal λ-QP pair for each sub-frame in L0 is solved using Lagrange optimization. When peak signal to noise ratio is used as quality criterion, the proposed algorithm achieves 7.0% and 7.0% bit-rate reduction with lowdelay_P_main (LDP) and lowdelay_main (LDB) configurations respectively; when structural similarity is used as quality criterion, the proposed algorithm achieves 13.3% and 13.1% bit-rate reduction with LDP and LDB configurations respectively. INDEX TERMS High efficiency video coding, hierarchical prediction structure, rate distortion optimization, sub-frame layer.

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QoE Analysis of Real-Time Video Streaming over 4G-LTE for UAV-Based Surveillance Applications

Naveed

Qazi

2020

Communications in Computer and Information Science

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An Efficient Rate-Distortion Optimization Method for Low-Delay Configuration in H.265/HEVC Based on Temporal Layer Rate and Distortion Dependence

Cited by 7 publications

References 19 publications

Rate-Distortion Optimization Based on Two-Pass Encoding for HEVC

Rate-Distortion Optimization Based on Two-Pass Encoding for HEVC

Sub-Frame Layer Rate Distortion Optimization for High Efficiency Video Coding

QoE Analysis of Real-Time Video Streaming over 4G-LTE for UAV-Based Surveillance Applications

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