全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

面向WMSN的图像分层采样多描述编码研究

Keywords: 无线多媒体传感器网络(WMSNs),多描述编码,小波变换

Full-Text   Cite this paper   Add to My Lib

Abstract:

针对数据包出错及丢失的情况下无线多媒体传感器网络(wirelessmediasensornetworks,WMSNs)图像传输的鲁棒性问题,提出一种图像分层采样多描述编码(multipledescriptioncoding,MDC)方法.该方法以小波变换为基础,充分利用小波系数的结构特征,按分解层不同选择不同模板的采样方式,实现图像数据的多描述编码传输.同时,在接收端收到单个描述情况下运用非线性相关算法重建原图像.实验结果表明,与典型的梅花采样方法相比,所提出的算法在相同码率下可降低编码时间24.06%,并可在接收端获得良好的重建图像质量.

References

[1]  Akyildiz I F, Melodia T, Chowdury K R. Wireless multimedia sensor networks: a survey[J]. IEEE on Wireless Communications, 2007,14(6):32-39.
[2]  Zhou Liang,Geller B,Zheng Baoyu. System scheduling for multi-description video streaming over wireless multi-hop networks[J]. IEEE Transactions on Broadcasting, 2009,5(4):731-741.
[3]  张炜,蒋刚毅,汪增福,等.图像信号的多描述编码方法[J].中国图象图形学报,2004,9(3):257-264. Zhang Wei,Jiang Gangyi,Wang Zengfu,et al. Research on image multiple description coding[J]. Journal of Image and Graphics, 2004,9(3):257-264. (in Chinese)
[4]  Khelil K, Bekka R E H, Djebari A, et al. Multiple description wavelet-based image coding using correlating transforms[J]. AEU-International Journal of Electronics and Communications, 2007,61(6):411-417.
[5]  Nan Z, Yan L, Feng W, et al. Efficient multiple-description image coding using directional lifting-based transform[J]. IEEE Transactions on Circuits and Systems for Video Technology, 2008,18(5):646-656.
[6]  Huihui B, Ce Z, Yao Z. Optimized multiple description Lattice vector quantization for wavelet image coding[J]. IEEE Transactions on Circuits and Systems for Video Technology, 2007,17(7):912-917.
[7]  Lukin A, Kubasov D. High-quality algorithm for Bayer pattern interpolation[J]. Programming and Computer Software, 2004,30(6):347-358.
[8]  El-Khamy S E, Hadhoud M M, Dessouky M I, et al. Efficient implementation of image interpolation as an inverse problem[J]. Digital Signal Processing, 2005,15(2):137-152.
[9]  庞博,张旭东,徐小红.自适应图像插值在超分辨率图像重建中的应用[J].合肥工业大学学报:自然科学版,2006(7):825-829. Pang Bo,Zhang Xudong,Xu Xiaohong. Super-resolution image reconstruction using adaptive interpolation method[J]. Journal of Hefei University of Technology: Natural Science, 2006(7):825-829. (in Chinese)
[10]  Vaishampayan V A. Design of multiple description scalar quantizers[J]. IEEE Transactions on Information Theory, 1993,39(3):821-834.
[11]  Orchard M T, Wang Y, Vaishampayan V, et al. Redundancy rate-distortion analysis of multiple description coding using pairwise correlating transforms[C]//Proceedings of International Conference on Image Processing. Santa Barbara, CA:, 1997:608-611.
[12]  Goyal V K, Vetterli M, Kovacevic J. Multiple description transform coding: robustness to erasures using tight frame expansions[C]//Proceedings of 1998 IEEE International Symposium on Information Theory. Cambridge, MA, USA: MIT, 1998:408.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133