2014 IEEE 16th International Workshop on Multimedia Signal Processing (MMSP)最新文献_第4页

Video super-resolution via dynamic texture synthesis 视频超分辨率通过动态纹理合成

2014 IEEE 16th International Workshop on Multimedia Signal Processing (MMSP) Pub Date : 2014-11-20 DOI: 10.1109/MMSP.2014.6958795

Chih-Chung Hsu, Li-Wei Kang, Chia-Wen Lin

{"title":"Video super-resolution via dynamic texture synthesis","authors":"Chih-Chung Hsu, Li-Wei Kang, Chia-Wen Lin","doi":"10.1109/MMSP.2014.6958795","DOIUrl":"https://doi.org/10.1109/MMSP.2014.6958795","url":null,"abstract":"This paper addresses the problem of hallucinating the missing high-resolution (HR) details of a low-resolution (LR) video while maintaining the temporal coherence of the hallucinated HR details by using dynamic texture synthesis (DTS). Most existing multi-frame-based video super-resolution (SR) methods suffer from the problem of limited reconstructed visual quality due to inaccurate sub-pixel motion estimation between frames in a LR video. To achieve high-quality reconstruction of HR details for a LR video, we propose a texture-synthesis-based video super-resolution method, in which a novel DTS scheme is proposed to render the reconstructed HR details in a time coherent way, so as to effectively address the temporal incoherence problem caused by traditional texture synthesis based image SR methods. To further reduce the complexity of the proposed method, our method only performs the DTS-based SR on a selected set of key-frames, while the HR details of the remaining non-key-frames are simply predicted using the bi-directional overlapped block motion compensation. Experimental results demonstrate that the proposed method achieves significant subjective and objective quality improvement over state-of-the-art video SR methods.","PeriodicalId":164858,"journal":{"name":"2014 IEEE 16th International Workshop on Multimedia Signal Processing (MMSP)","volume":"2005 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116769744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Stable pose tracking from a planar target with an analytical motion model in real-time applications 基于解析运动模型的平面目标稳定位姿跟踪在实时应用中

2014 IEEE 16th International Workshop on Multimedia Signal Processing (MMSP) Pub Date : 2014-11-20 DOI: 10.1109/MMSP.2014.6958793

Po-Chen Wu, Yao-Hung Hubert Tsai, Shao-Yi Chien

引用次数: 6

Skeleton-guided vectorization of Chinese calligraphy images 中国书法图像的骨架引导矢量化

2014 IEEE 16th International Workshop on Multimedia Signal Processing (MMSP) Pub Date : 2014-11-20 DOI: 10.1109/MMSP.2014.6958805

W. Pan, Z. Lian, Yingmin Tang, Jianguo Xiao

引用次数: 6

Local stereo matching algorithm using rotation-skeleton-based region 基于旋转骨架区域的局部立体匹配算法

2014 IEEE 16th International Workshop on Multimedia Signal Processing (MMSP) Pub Date : 2014-11-20 DOI: 10.1109/MMSP.2014.6958812

Xing Li, Yao Zhao, Chunyu Lin, Chao Yao

{"title":"Local stereo matching algorithm using rotation-skeleton-based region","authors":"Xing Li, Yao Zhao, Chunyu Lin, Chao Yao","doi":"10.1109/MMSP.2014.6958812","DOIUrl":"https://doi.org/10.1109/MMSP.2014.6958812","url":null,"abstract":"This paper proposes a local stereo matching algorithm for accurate disparity estimation by using 45° rotation-skeleton-based region (RSBR). For local stereo matching, an adaptive local region is important for the performance of the disparity estimation. In order to generate more accurate regions, we use a skeleton with 45° rotation to divide an initial window that achieved by mean-shift segmentation into four parts. All the pixels in the same height level are judged simultaneously, and the valid pixels in the four parts construct the 45° RSBR. Compared with the common local support region based on orthogonal skeleton, 45° RSBR enables to maintain the consistency in images and have the advantage of error tolerance. The local stereo matching algorithm with RSBR is improved in two aspects. First, the hybrid cost aggregation using the RSBR helps to remove some noise caused by outliers and improve the subjective performance. Second, the candidate values in the refinement step are selected from the RSBR, which ensures the validity of candidates. The experiment results demonstrate a good performance in Middlebury Stereo datasets, both in objective and subjective performance.","PeriodicalId":164858,"journal":{"name":"2014 IEEE 16th International Workshop on Multimedia Signal Processing (MMSP)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134214956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Correlation modeling for a distributed scalable video codec based on the HEVC standard 基于HEVC标准的分布式可扩展视频编解码器的关联建模

2014 IEEE 16th International Workshop on Multimedia Signal Processing (MMSP) Pub Date : 2014-11-20 DOI: 10.1109/MMSP.2014.6958830

Xiem HoangVan, J. Ascenso, F. Pereira

{"title":"Correlation modeling for a distributed scalable video codec based on the HEVC standard","authors":"Xiem HoangVan, J. Ascenso, F. Pereira","doi":"10.1109/MMSP.2014.6958830","DOIUrl":"https://doi.org/10.1109/MMSP.2014.6958830","url":null,"abstract":"The growing heterogeneity of networks, devices and consumption conditions asks for flexible and adaptive video coding solutions. The compression power of the HEVC standard and the benefits of the distributed video coding paradigm allow designing novel scalable coding solutions with improved error robustness and low encoding complexity while still achieving competitive compression efficiency. In this context, this paper proposes a novel scalable video coding scheme using a HEVC Intra compliant base layer and a distributed coding approach in the enhancement layers (EL). This design inherits the HEVC compression efficiency while providing low encoding complexity at the enhancement layers. The temporal correlation is exploited at the decoder to create the EL side information (SI) residue, an estimation of the original residue. The EL encoder sends only the data that cannot be inferred at the decoder, thus exploiting the correlation between the original and SI residues; however, this correlation must be characterized with an accurate correlation model to obtain coding efficiency improvements. Therefore, this paper proposes a correlation modeling solution to be used at both encoder and decoder, without requiring a feedback channel. Experiments results confirm that the proposed scalable coding scheme has lower encoding complexity and provides BD-Rate savings up to 3.43% in comparison with the HEVC Intra scalable extension under development.","PeriodicalId":164858,"journal":{"name":"2014 IEEE 16th International Workshop on Multimedia Signal Processing (MMSP)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114717437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Extrinsic calibration for wide-baseline RGB-D camera network 宽基线RGB-D摄像机网络的外部标定

2014 IEEE 16th International Workshop on Multimedia Signal Processing (MMSP) Pub Date : 2014-11-20 DOI: 10.1109/MMSP.2014.6958798

Ju Shen, Wanxin Xu, Ying Luo, Po-Chang Su, S. Cheung

引用次数: 17

Robust mixed noise removal with non-parametric Bayesian sparse outlier model 基于非参数贝叶斯稀疏离群模型的鲁棒混合噪声去除

2014 IEEE 16th International Workshop on Multimedia Signal Processing (MMSP) Pub Date : 2014-11-20 DOI: 10.1109/MMSP.2014.6958792

Peixian Zhuang, Wei Wang, Delu Zeng, Xinghao Ding

引用次数: 3

Iterative hierarchical true motion estimation for temporal frame interpolation 时间帧插值的迭代层次真运动估计

2014 IEEE 16th International Workshop on Multimedia Signal Processing (MMSP) Pub Date : 2014-11-20 DOI: 10.1109/MMSP.2014.6958822

A. Veselov, M. Gilmutdinov

引用次数: 17

Design of extrafine complex directional wavelet transform and application to image denoising 超细复方向小波变换的设计及其在图像去噪中的应用

2014 IEEE 16th International Workshop on Multimedia Signal Processing (MMSP) Pub Date : 2014-11-20 DOI: 10.1109/MMSP.2014.6958794

Shrishail S. Gajbhar, M. Joshi

引用次数: 0

A fast intermode decision algorithm based on analysis of inter prediction residual 基于互预测残差分析的快速互模决策算法

2014 IEEE 16th International Workshop on Multimedia Signal Processing (MMSP) Pub Date : 2014-11-20 DOI: 10.1109/MMSP.2014.6958827

Luheng Jia, O. Au, C. Tsui, W. Dai, Pengfei Wan

{"title":"A fast intermode decision algorithm based on analysis of inter prediction residual","authors":"Luheng Jia, O. Au, C. Tsui, W. Dai, Pengfei Wan","doi":"10.1109/MMSP.2014.6958827","DOIUrl":"https://doi.org/10.1109/MMSP.2014.6958827","url":null,"abstract":"Rate-distortion-optimized (RDO) intermode decision is one of the most effective tools that greatly improves the coding performance of modern coding standards, for example, H.264/AVC and HEVC. However, RDO intermode decision also leads to extremely intense computation. To reduce the complexity, a fast intermode decision algorithm is presented in this paper. Mathematical analysis of inter prediction residual is performed which explicitly shows the impact of edge information and motion characteristics to the prediction accuracy. Moreover, It is shown that with fixed quantization step that minimizing of R-D costs over different partition types is equivalent to minimizing the variance of transformed residual which can be expressed by motion vector and edge gradient components. In consequence, the complex calculation of rate and distortion is replaced by simple pre-analysis of video content. The repetition of motion estimation (ME) and entropy coding process are avoided. Inspired by the theoretical analysis, a fast inter mode decision algorithm is proposed. Experimental results show that the fast method achieves considerable complexity reduction with negligible coding performance degradation.","PeriodicalId":164858,"journal":{"name":"2014 IEEE 16th International Workshop on Multimedia Signal Processing (MMSP)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124820446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0