Wireless Multimedia Sensor Networks

Wireless multimedia sensor networks are networks of wireless, interconnected smart devices that enable retrieving video and audio streams, still images, and scalar sensor data from the environment. WMSNs are widely used in distributed sensing applications, such as surveillance, intelligent transportation, industrial process control, remote health care, and consumer electronics. There exists correlation among the visual information observed by cameras with overlapped field of views (FoVs). Correlation can help to develop efficient multimedia communication solutions for WMSNs.

We have proposed a correlation-based communication framework consisting of the following components: i) a spatial correlation model for visual information that can proactively estimate correlation using low computation and communication costs; ii) a collaborative image compression framework that can remove traffic redundancy maximize the overall compression gain in the network; iii) a correlation-based scheduling scheme that finds the optimal transmission schedule among correlated cameras to maximize network lifetime; and iv) a correlation-aware QoS routing protocol that optimizes energy consumption while providing QoS support in delay and reliability.
 

Related Publications

1. P. Wang, R. Dai, and I. F. Akyildiz, "A Differential Coding-Based Scheduling for Wireless Multimedia Sensor Networks", IEEE Transactions on Multimedia, vol. 15, no. 3, pp. 684-697, Apr. 2013.
2. R. Dai, P. Wang, and I. F. Akyildiz, "Correlation-Aware QoS Routing with Differential Coding for Wireless Video Sensor Networks", IEEE Transactions on Multimedia, vol. 14, no. 5, pp. 1469-1479, Oct. 2012.
3. P. Wang, R. Dai, and I. F. Akyildiz, "A Spatial Correlation-Based Image Compression Framework for Wireless Multimedia Sensor Networks", IEEE Transactions on Multimedia, vol. 13, no. 2, pp. 338-401, Apr. 2011.
4. R. Dai and I. F. Akyildiz, "A Spatial Correlation Model for Visual Information in Wireless Multimedia Sensor Networks", IEEE Transactions on Multimedia, vol. 11, no. 6, pp. 1148 - 1159, Oct. 2009.
5. P. Wang, R. Dai, and I. F. Akyildiz, "Visual Correlation-Based Image Gathering for Wireless Multimedia Sensor Networks", IEEE International Conference on Computer Communications (INFOCOM), Apr. 2011.
6. R. Dai, P. Wang, and I. F. Akyildiz, "Correlation-Aware QoS Routing for Wireless Video Sensor Networks", IEEE Global Communications Conference (GLOBECOM), Dec. 2010.
7. P. Wang, R. Dai, and I. F. Akyildiz, "Collaborative Data Compression using Clustered Source Coding for Wireless Multimedia Sensor Networks", IEEE INFOCOM, Mar. 2010.
8. R. Dai and I. F. Akyildiz, "Joint Effect of Multiple Correlated Cameras in Wireless Multimedia Sensor Networks", IEEE International Conference on Communications (ICC), Jun. 2009.