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首页> 外文期刊>International journal of online engineering >Exploration of Wireless Multimedia Sensor Network Based on Joint Photographic Experts Group Image Coding Algorithm
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Exploration of Wireless Multimedia Sensor Network Based on Joint Photographic Experts Group Image Coding Algorithm

机译：基于联合图像专家组图像编码算法的无线多媒体传感器网络探索

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to study the performance of image coding and image transmission of wireless video sensor node in wireless multimedia sensor network, the challenges and design objectives of image coding technology in wireless multimedia sensor network are discussed, and the classification and exploration are carried out from two aspects: individual source coding and distributed source coding. The compression of video monitoring image sequence in wireless multimedia sensor network is studied and a low complexity image coding scheme based on change detection and improved Joint Photographic Experts Group (JPEG) algorithm is proposed. The moving target in the monitoring image is located with the change detection algorithm, that is, the area of interest. Only the region of interest is transmitted to reduce the quantity of data transmission and adapt to the limited storage and forwarding capability of wireless sensor nodes ; The Discrete Cosine Transform (DCT) and quantization processes in Joint Photographic Experts Group (JPEG) algorithm are improved to reduce the computational complexity and adapt to the limited computing power of wireless sensor nodes. The analysis of algorithm complexity and the results of simulation experiment show that the proposed method can effectively reduce the data communication amount of wireless sensor nodes and the energy consumption in the calculation process while ensuring the image quality required by the application. Wireless multimedia sensor network is a new and interdisciplinary subject. The study of it is also multidirectional and multi-angle. The image coding algorithm of wireless multimedia sensor network is studied deeply. Although some achievements have been made, there are still a lot of problems that need to be further studied.
机译：为了研究无线多媒体传感器网络中无线视频传感器节点的图像编码和图像传输性能，讨论了无线多媒体传感器网络中图像编码技术的挑战和设计目标，并从两个方面进行了分类和探索：单个源代码和分布式源代码。研究了无线多媒体传感器网络中视频监控图像序列的压缩，提出了一种基于变化检测和改进的联合图像专家组（JPEG）算法的低复杂度图像编码方案。监视图像中的移动目标通过变化检测算法进行定位，即关注区域。仅传输感兴趣的区域以减少数据传输量，并适应无线传感器节点有限的存储和转发能力;改进了联合图像专家组（JPEG）算法中的离散余弦变换（DCT）和量化过程，以降低计算复杂度并适应无线传感器节点有限的计算能力。通过对算法复杂度的分析和仿真实验的结果表明，该方法可以在保证应用所需图像质量的同时，有效减少无线传感器节点的数据通信量和计算过程中的能耗。无线多媒体传感器网络是一个新兴的交叉学科。对它的研究也是多方向和多角度的。对无线多媒体传感器网络的图像编码算法进行了深入研究。尽管已经取得了一些成就，但是仍然有很多问题需要进一步研究。

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