An all-zero blocks early detection method for high-efficiency video coding

Lv, Zhengguang; Dong, Shengfu; Wang, Ronggang; Xie, Xiaodong; Jia, Huizhu; Wang, Wenmin; Gao, Wen

doi:10.1117/12.2039048

Cited by 3 publications

(7 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To target the swarm intelligence rule, the cost function J is determined by two objective functions, including a reconstruction error (MSE) of visual quality and smooth L1 error of bit allocation. The cost function J can be defined as in (11):…”

Section: Lb-pso Estimatormentioning

confidence: 99%

“…To overcome the limitations of the R – Q model mentioned above, a new type of encoder control with the hierarchical bit allocation for every picture in a GOP is proposed in [ 11 ], called R –

rate control. First, the author proposed a hyperbolic function as a model to express the characteristics of the R – D relationship, as in (3):

where C and K are parameters related to video content.…”

Section: Related Workmentioning

confidence: 99%

“…Moreover, HEVC needs to have a functional encoder control, known as rate control, to determine the optimum codec parameters to accomplish minimal rate–distortion ( R – D ) score [ 11 ]. Many codec parameters include modes selection, quad-tree structure, motion estimation, and quantization parameter (

).…”

Section: Introductionmentioning

confidence: 99%

“…Many codec parameters include modes selection, quad-tree structure, motion estimation, and quantization parameter (

). In common, the rate control algorithms [ 11 , 12 ] are used to define the bit allocation and

by fixing the other parameters to accomplish the target bit with consistent visual quality. Specifically, rate control needs to manipulate the number of bits from a constant bit rate (CBR) into each coding level, including the group of picture (GOP) level, picture level, and basic units known as macroblocks (MBs) in H.264/AVC.…”

Section: Introductionmentioning

confidence: 99%

“…This assumption is not valid for the current video codec because the codec becomes progressively variable [ 4 ]. Thus, a robust rate control [ 11 ], named R –

rate control, has been released to achieve the best balance between bit rate and distortion. This rate control attempts to improve the coding efficiency and rate control accuracy by using the Lagrangian method,

, for rate–distortion optimization (RDO).…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Learning-Based Rate Control for High Efficiency Video Coding

Chen

Aramvith

Miyanaga

2023

Sensors

View full text Add to dashboard Cite

High efficiency video coding (HEVC) has dramatically enhanced coding efficiency compared to the previous video coding standard, H.264/AVC. However, the existing rate control updates its parameters according to a fixed initialization, which can cause errors in the prediction of bit allocation to each coding tree unit (CTU) in frames. This paper proposes a learning-based mapping method between rate control parameters and video contents to achieve an accurate target bit rate and good video quality. The proposed framework contains two main structural codings, including spatial and temporal coding. We initiate an effective learning-based particle swarm optimization for spatial and temporal coding to determine the optimal parameters at the CTU level. For temporal coding at the picture level, we introduce semantic residual information into the parameter updating process to regulate the bit correctly on the actual picture. Experimental results indicate that the proposed algorithm is effective for HEVC and outperforms the state-of-the-art rate control in the HEVC reference software (HM-16.10) by 0.19 dB on average and up to 0.41 dB for low-delay P coding structure.

show abstract

Section: Lb-pso Estimatormentioning

confidence: 99%

rate control. First, the author proposed a hyperbolic function as a model to express the characteristics of the R – D relationship, as in (3):

where C and K are parameters related to video content.…”

Section: Related Workmentioning

confidence: 99%

).…”

Section: Introductionmentioning

confidence: 99%

“…Many codec parameters include modes selection, quad-tree structure, motion estimation, and quantization parameter (

). In common, the rate control algorithms [ 11 , 12 ] are used to define the bit allocation and

Section: Introductionmentioning

confidence: 99%

“…This assumption is not valid for the current video codec because the codec becomes progressively variable [ 4 ]. Thus, a robust rate control [ 11 ], named R –

, for rate–distortion optimization (RDO).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations