scholarly journals Rate-Distortion and Rate-Energy-Distortion Evaluations of Compressive-Sensing Video Coding

2017 ◽  
Vol 2017 ◽  
pp. 1-8
Author(s):  
Bingyu Ji ◽  
Ran Li ◽  
Changan Wu
Keyword(s):  
Energy Consumption ◽  
Video Coding ◽  
Compressive Sensing ◽  
Energy Budget ◽  
Rate Distortion ◽  
Distributed Video Coding ◽  
Experimental Results ◽  
Distinct Advantage ◽  
Limited Energy ◽  
Reconstruction Quality

Compressive-Sensing Video Coding (CSVC) is a new video coding framework based on compressive-sensing (CS) theory. This paper presents the evaluations on rate-distortion performance and rate-energy-distortion performance of CSVC by comparing it with the popular hybrid video coding standard H.264 and distributed video coding (DVC) system DISCOVER. Experimental results show that CSVC achieves a poor rate-distortion performance when compared with H.264 and DISCOVER, but its rate-energy-distortion performance has a distinct advantage; moreover, its energy consumption of coding is approximately invariant regardless of reconstruction quality. It can be concluded that, with a limited energy budget, CSVC outperforms H.264 and DISCOVER, but its rate-distortion performance still needs improvement.

Residual Wavelet-Domain DVC Using an Optimized TCQ

2011 ◽  
Vol 58-60 ◽  
pp. 2079-2084
Author(s):  
An Hong Wang ◽  
Yi Zheng ◽  
Zhi Hong Li ◽  
Yu Yang Wang
Keyword(s):  
Video Coding ◽  
Rate Distortion ◽  
Low Complexity ◽  
Distributed Video Coding ◽  
Experimental Results ◽  
Wavelet Domain ◽  
Wavelet Coefficients ◽  
Trellis Coded

Nowadays, the rate-distortion performance of distributed video coding (DVC) is not satisfied despite its distinct contribution to low-complexity encoding. This paper presents a new residual DVC using an optimized trellis coded quantization (TCQ) to improve the performance of the current schemes. H.264/AVC intra-frame coding is firstly used to obtain the referenced frame, and then the residual between Wyner-Ziv frame and the referenced frame is Wyner-Ziv encoded with a proposed optimized TCQ which consists of the improved quadtree and the improved TCQ, both considering the characters of wavelet coefficients in different sub-bands. Experimental results show that the proposed scheme outperforms the referenced in rate-distortion performance, and the goal of low-complexity encoding is achieved.

A Novel Distribution Parameter Fitting Algorithm of Correlation Noise Model for Distributed Video Coding

2014 ◽  
Vol 599-601 ◽  
pp. 1360-1363
Author(s):  
Xiang Yan Liang ◽  
Zhen Hua Tang ◽  
Ya Dan Luo ◽  
Tuan Fa Qin
Keyword(s):  
Video Coding ◽  
Euclidean Distance ◽  
Rate Distortion ◽  
Distributed Video Coding ◽  
Distribution Parameter ◽  
Noise Model ◽  
Correlated Noise ◽  
Minimum Euclidean Distance ◽  
Parameter Fitting ◽  
Fitting Algorithm

In order to improve the accuracy of correlated noise (CN) model for distributed video coding (DVC), this paper proposes a novel distribution parameter fitting algorithm based on the minimum Euclidean distance. The presented method can obtain the final fitted distribution parameter by using the minimum Euclidean distance to compare the Laplace probability density function (PDF) with the PDF computed utilizing the actual residual frame data. Experiment results show that the proposed distribution parameter fitting algorithm can improve the rate-distortion (R-D) performance of DVC significantly.

scholarly journals Fast ISP Coding Mode Optimization Algorithm Based on CU Texture Complexity for VVC

2020 ◽  
Author(s):  
Zhi Liu ◽  
Mengjun Dong ◽  
XiaoHan Guan ◽  
Mengmeng Zhang ◽  
Ruoyu Wang
Keyword(s):  
Video Coding ◽  
Optimization Algorithm ◽  
Rate Distortion ◽  
Texture Features ◽  
Experimental Results ◽  
Computation Complexity ◽  
Rate Distortion Cost ◽  
Texture Complexity ◽  
Coding Mode ◽  
Coding Unit

Abstract In lately published video coding standard Versatile Video Coding (VVC/ H.266), the intra sub-partitions (ISP) coding mode is proposed. It is efficient for frames with rich texture, but less efficient for frames that are very flat or constant. In this paper, by comparing and analyzing the rate distortion cost (RD-cost) of coding unit (CU) with different texture features for using and not using ISP(No-ISP) coding mode, it is found that CUs with simple texture can get better coding performance in No-ISP coding mode. Based on this observations, a fast ISP coding mode optimization algorithm based on CU texture complexity is proposed, which aims to determine whether CU needs to use ISP coding mode in advance by calculating CU texture complexity, so as to reduce the computation complexity of ISP. The experimental results show that under All Intra (AI) configuration, the coding time can be reduced by 7%, while the BD-rate only increase by 0.09%.

scholarly journals Rate-distortion driven decoder-side bitplane mode decision for distributed video coding

2010 ◽  
Vol 25 (9) ◽  
pp. 660-673 ◽  
Author(s):  
Jürgen Slowack ◽  
Stefaan Mys ◽  
Jozef Škorupa ◽  
Nikos Deligiannis ◽  
Peter Lambert ◽  
...  
Keyword(s):  
Video Coding ◽  
Rate Distortion ◽  
Distributed Video Coding ◽  
Mode Decision

scholarly journals Adaptive mode decision with residual motion compensation for distributed video coding

2015 ◽  
Vol 4 ◽  
Author(s):  
Huynh Van Luong ◽  
Søren Forchhammer ◽  
Jürgen Slowack ◽  
Jan De Cock ◽  
Rik Van de Walle
Keyword(s):  
Video Coding ◽  
Motion Compensation ◽  
Rate Distortion ◽  
Low Complexity ◽  
Distributed Video Coding ◽  
Mode Decision ◽  
Coding Efficiency ◽  
Residual Motion ◽  
A Current

Distributed video coding (DVC) is a coding paradigm that entails low complexity encoding by exploiting the source statistics at the decoder. To improve the DVC coding efficiency, this paper presents a novel adaptive technique for mode decision to control and take advantage of skip mode and intra mode in DVC initially proposed by Luong et al. in 2013. The adaptive mode decision (AMD) is not only based on quality of key frames but also the rate of Wyner–Ziv (WZ) frames. To improve noise distribution estimation for a more accurate mode decision, a residual motion compensation is proposed to estimate a current noise residue based on a previously decoded frame. The experimental results, integrating AMD in two efficient DVC codecs, show that the proposed AMD DVC significantly improves the rate distortion performance without increasing the encoding complexity. For a GOP size of 2 on the set of six test sequences, the average (Bjøntegaard) bitrate saving of the proposed codec is 35.5% on WZ frames compared with the DISCOVER codec. This saving is mainly achieved by AMD.

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