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Novel Rate-Quantization Model-Based Rate Control With Adaptive Initialization for Spatial Scalable Video Coding

Sudeng Hu, Hanli Wang, Sam Kwong, C.-C. Jay Kuo
2012 IEEE transactions on industrial electronics (1982. Print)  
Index Terms-Initial quantization parameter, rate control, rate-quantization (R-Q) model, scalable video coding (SVC), spatial scalability.  ...  First, by analyzing the relationship among the best initial quantization parameter (Q p ), channel bandwidth, and the initial frames' complexity measure, an adaptive Q p -initialization model is introduced  ...  Therefore, it is necessary to explore the impact of initial complexity on determining the initial Q p value.  ... 
doi:10.1109/tie.2011.2157282 fatcat:ebid3ilyenaffn74u2az766sym

Optimal Bit Allocation Strategy Based On Spatial Complexity And Temporal Correlation

Seung-Hwan Kim, Geun-Yong Kim, Jin Heo, Yo-Sung Ho
2005 Zenodo  
The purpose of measuring the spatial complexity of the intra frame is to estimate coding bits for the intra frame with the given quantization parameter.  ...  Since H.264/AVC determine the QP value before transform coding, we cannot measure the spatial complexity of the intra QP.  ... 
doi:10.5281/zenodo.38937 fatcat:o4zqsli44fgovohlqq4neyozgi

Rate-Distortion Optimization of Rate Control for H.264 With Adaptive Initial Quantization Parameter Determination

Hanli Wang, Sam Kwong
2008 IEEE transactions on circuits and systems for video technology (Print)  
Index Terms-H.264, initial quantization parameter, rate control, rate-distortion optimization.  ...  First, a linear distortion-quantization (D-Q) model is introduced and thus a close-form solution is developed to derive optimal quantization parameters ( ) for encoding each macroblock.  ...  Secondly, for determining the initial we utilize an entropy information and an INTRA16 dc mode [15] based complexity measure of the first encoded frame.  ... 
doi:10.1109/tcsvt.2007.913757 fatcat:pitmw6yo4zc2na7lxxlkpk6hba

Bit allocation for spatial scalability in H.264/SVC

Jiaying Liu, Yongjin Cho, Zongming Guo, C.-C. Jay Kuo
2008 2008 IEEE 10th Workshop on Multimedia Signal Processing  
Finally, a low complexity spatial layer bit allocation scheme is developed using the proposed GOP-based R-D models.  ...  We propose a model-based spatial layer bit allocation algorithm for H.264/SVC in this work.  ...  Finally, we can determine the encoder input parameters, QP 1 and QP 2 , using the one-to-one correspondence between quantization step size Q and quantization parameter QP . V.  ... 
doi:10.1109/mmsp.2008.4665089 dblp:conf/mmsp/LiuCGK08 fatcat:srvv3aglnze2zklld3gbjzpqk4

Single Pass Dependent Bit Allocation For Spatial Scalability Coding Of H.264/Svc

Amera Abd-AlRahem, Rehab Abdel-Kader, Randa Atta
2014 Zenodo  
It is obvious from (1) that the rate and distortion of the BL is primarily determined by its own quantization step-size .  ...  Once the BL and EL R-D models are selected, the objective is to obtain the optimal quantization step-size for each spatial layer that minimizes the total distortion under a given bitrate constraint.  ... 
doi:10.5281/zenodo.43832 fatcat:xdgojtj33zffxnzfz5vb72hi4i

Adaptive Spatial and Transform Domain FGS Coding

Li Zhang, Xiangyang Ji, Wen Gao, Debin Zhao
2007 Multimedia and Expo, 2007 IEEE International Conference on  
Transform operation is only needed when there are non-zero reconstructed coefficients in spatially co-located block in base layer.  ...  In this paper, an adaptive prediction error coding method in spatial and frequency domain with lower complexity is considered for FGS layer coding.  ...  parameters are determined by formulas (8) and (9).  ... 
doi:10.1109/icme.2007.4284903 dblp:conf/icmcs/ZhangJGZ07 fatcat:dhm4zg3mtzdavaq4rhxw6jve3e

Bit Allocation for Spatial Scalability Coding of H.264/SVC With Dependent Rate-Distortion Analysis

Jiaying Liu, Yongjin Cho, Zongming Guo, Jay Kuo
2010 IEEE transactions on circuits and systems for video technology (Print)  
Finally, we compare the performance of group of pictures-based and frame-based spatial layer bit allocation schemes at a fixed temporal resolution.  ...  To solve it, we first focus on the case of two spatial layers, derive the distortion and rate models of the dependent layer analytically, and develop a low-complexity bit allocation algorithm.  ...  We can determine quantization parameters, QP 1 and QP 2 , using the one-to-one correspondence between quantization step-size Q and quantization parameter QP [15] .  ... 
doi:10.1109/tcsvt.2010.2045924 fatcat:2eehvp4jovaudp2h6mezrphfum

Rate-Distortion Modeling for Efficient H.264/AVC Encoding

Yu-Kuang Tu, Jar-Ferr Yang, Ming-Ting Sun
2007 IEEE transactions on circuits and systems for video technology (Print)  
Furthermore, with quantization-based thresholding to determine the number, the absolute sum, and the squared sum of transform coefficients, the simplified transform-domain R-D measurement is introduced  ...  Modeling the rate and distortion functions accurately in acceptable complexity helps to make the optimization more practical.  ...  With the spatial-domain R-D functions, improved rate control can be achieved in the determination of the quantization parameter.  ... 
doi:10.1109/tcsvt.2007.894041 fatcat:yvkbels62fesxerzihmvrtmqiy

FEATURE VECTOR CONSTRUCTION METHOD FOR IRIS RECOGNITION

G. Odinokikh, A. Fartukov, M. Korobkin, J. Yoo
2017 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
The approach consists of two steps: iris feature extraction using Gabor filtering with optimal parameters and quantization with separated preliminary optimized fragility thresholds.  ...  There are two characteristics which determine the vector element utility: fragility and discriminability.  ...  In this particular work the methods based on complex Gabor filtering are taken as a basis.  ... 
doi:10.5194/isprs-archives-xlii-2-w4-233-2017 fatcat:vkqk6myaj5fgbgpmm7b7sxwdha

Optimal Adaptive Quantization based on Temporal Distortion Propagation model for HEVC

Maxime Bichon, Julien Le Tanou, Michael Ropert, Wassim Hamidouche, Luce Morin
2019 IEEE Transactions on Image Processing  
of optimal block quantizers search.  ...  Optimal adaptive quantization is one of the key points to optimize the coding efficiency of video encoders.  ...  Given that, BQTerrace is highly uniform in terms of temporal complexity but not in terms of spatial complexity, it explains why more quality is affected to spatially complex areas, such as the terrace  ... 
doi:10.1109/tip.2019.2919180 fatcat:kgkki6lnezazvmvjxjgfj624eq

Optimization of DMD-based independent amplitude and phase modulation: a spatial resolution and quantization [article]

Alexandra Georgieva, Andrey Belashov, Nikolay V. Petrov
2020 arXiv   pre-print
The dependence of the best DMD-pattern generation parameters on the type of target complex wavefront is discussed in terms of spatial resolution and quantization degree.  ...  The increase of carrier frequency results in higher spatial resolution of the modulated complex wave but decreases its quantization.  ...  The variation of these two parameters enables the optimization of the quality of complex wave modulation and the achievement of either high spatial resolution or high image quantization.  ... 
arXiv:2010.00955v1 fatcat:s6a3gkighngwhh74vnsrrgmrcq

Rate Control in Video Coding [chapter]

Zongze Wu, Shengli Xie, Kexin Zhang, Rong Wu
2011 Recent Advances on Video Coding  
The core of TM5 rate control algorithm is, under the situation that buffer is not overflow or overflow, distributing bits and determining the reference value of quantitative parameter by estimating the  ...  rule by Lagrange optimization.  ...  Adaptive quantization This step tries to refine the quantization parameter calculated in Step 2 based on the complexity of the macroblock.  ... 
doi:10.5772/14585 fatcat:u5k3zyytrjhkxdjflajwakze2y

MINMAX rate control with a perceived distortion metric

Yegnaswamy Sermadevi, Mark Masry, Sheila S. Hemami, Sethuraman Panchanathan, Bhaskaran Vasudev
2004 Visual Communications and Image Processing 2004  
Lagrangian optimization is employed within each frame to assign macroblock-level quantization step-sizes that minimize this frame-level distortion.  ...  This paper presents a Rate-Distortion based optimization procedure for video coding that explicitly incorporates a perceptual distortion measure.  ...  Starting with an initial MPEG-2 TM5 allocation, the optimization procedure is used to determine a macroblock-level quantizer step-size allocation that minimizes the maximum (MINMAX) distortion across all  ... 
doi:10.1117/12.527254 dblp:conf/vcip/SermadeviMH04 fatcat:mrov3gm3ovdw7cfdjr7ffh4cwu

MPEG-4 rate control for multiple video objects

A. Vetro, Huifang Sun, Yao Wang
1999 IEEE transactions on circuits and systems for video technology (Print)  
Based on the new individual targets and rate-quantizer relation for texture, appropriate quantization parameters are calculated.  ...  In the preencoding stage, an initial target estimate is made for each object.  ...  Quantization Level Calculation: The object-based QP's are determined in the same manner as before.  ... 
doi:10.1109/76.744285 fatcat:h5xhzhfuz5fltc3sf3tmiwnqny

Joint temporal-spatial bit allocation for video coding with dependency

Shan Liu, C.-C.J. Kuo
2005 IEEE transactions on circuits and systems for video technology (Print)  
Frames to be skipped in the coding process and quantization parameters (QPs) exploited in coded frames are adaptively and jointly determined to reach a proper tradeoff between temporal and spatial qualities  ...  Index Terms-Bit-rate budget, frame skipping (FS), quantization parameters (QPs), temporal-spatial bit allocation, rate-distortion (R-D).  ...  Traditional still image compression methods based on DCT and quantization are adopted to reduce spatial redundancy within each frame.  ... 
doi:10.1109/tcsvt.2004.839996 fatcat:5gkammnec5gv7isy6ich7gndtm
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