Adaptive mode decision with residual motion compensation for distributed video coding

Luong, Huynh Van; Forchhammer, Søren; Slowack, Jürgen; Cock, Jan De; Walle, Rik Van de

doi:10.1109/pcs.2013.6737706

Cited by 3 publications

(4 citation statements)

References 12 publications

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“…However, the quality of WZ frame in video sequences is obviously decreased in the situation of scene change. The reason is the temporal correlation between consecutive frames diminished while scene change occurs in frames [3].…”

Section: Video Codingmentioning

confidence: 99%

A GOP Size Control Method for Distributed Video Coding

Tian

Cai

Wang

2015

2015 8th International Conference on Intelligent Computation Technology and Automation (ICICTA)

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Controlling the GOP (group of picture) size in distributed video coding is an important task since it has significant impact on the video coding performance. This paper presents a method to control the GOP size in the distributed video coding based on the Distortion-Quantization optimal and frame activity. To perform GOP size control adaptively ,firstly this work compute the frame activity in current frame of video sequence, which take GOP size and frame scene changes in frame into account at the same time. Then, the GOP size control method is obtained based on the computation of the best Distortion-Quantization parameter and the frame activity. Experimental results show that the proposed method not only achieves notable video quality improvements, but also reduced the average distortion, comparisons with the conventional scheme.

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Section: Video Codingmentioning

confidence: 99%

A GOP Size Control Method for Distributed Video Coding

Tian

Cai

Wang

2015

2015 8th International Conference on Intelligent Computation Technology and Automation (ICICTA)

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“…In this paper, we continue with the decoder-side mode decision for a TDWZ codec extending the work of [15]. The mode decisions are significantly impacted by the correlation model that was enhanced by the refinement techniques proposed in DVC [6,7].…”

Section: Introductionmentioning

confidence: 99%

“…The mode decision uses estimated rate values to form an AMD and develop a residual MC to generate a more accurate correlation noise. The proposed AMD is integrated with the DVC codec in [6] to enhance the RD performance of the TDWZ scheme and evaluate the benefits of AMD as in [15]. Thereafter, the AMD technique is also integrated with a state-of-the-art, but also more complex DVC codec [7].…”

Section: Introductionmentioning

confidence: 99%

“…To sum up, in this paper we extend the presentation of AMD initially presented in [15] and additionally integrate the techniques with the advanced MORE DVC [7] to achieve state-of-the-art results by integration in two highly efficient DVC codecs and evaluate the generality of the AMD techniques presented. The rest of this paper is organized as follows.…”

Section: Introductionmentioning

confidence: 99%

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Adaptive mode decision with residual motion compensation for distributed video coding

Luong

Forchhammer

Slowack³

et al. 2015

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Re-estimation of Motion and Reconstruction for Distributed Video Coding

Luong

Rakêt

Forchhammer

2014

IEEE Trans. on Image Process.

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Transform domain Wyner-Ziv (TDWZ) video coding is an efficient approach to distributed video coding (DVC), which provides low complexity encoding by exploiting the source statistics at the decoder side. The DVC coding efficiency depends mainly on side information and noise modeling. This paper proposes a motion re-estimation technique based on optical flow to improve side information and noise residual frames by taking partially decoded information into account. To improve noise modeling, a noise residual motion re-estimation technique is proposed. Residual motion compensation with motion updating is used to estimate a current residue based on previously decoded frames and correlation between estimated side information frames. In addition, a generalized reconstruction algorithm to optimize a multihypothesis reconstruction is proposed. The proposed techniques using motion and reconstruction re-estimation (MORE) are integrated in the SING TDWZ codec, which uses side information and noise learning. For Wyner-Ziv frames using GOP size 2, the MORE codec significantly improves the TDWZ coding efficiency with an average (Bjøntegaard) PSNR improvement of 2.5 dB and up to 6 dB improvement compared with DISCOVER.

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Adaptive mode decision with residual motion compensation for distributed video coding

Cited by 3 publications

References 12 publications

A GOP Size Control Method for Distributed Video Coding

A GOP Size Control Method for Distributed Video Coding

Adaptive mode decision with residual motion compensation for distributed video coding

Re-estimation of Motion and Reconstruction for Distributed Video Coding

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