Energy Efficient Image Transmission with Security in Wireless Sensor Networks

A wireless sensor network (WSN) consists of spatially distributed autonomous sensors to monitor physical or environmental conditions, such as temperature, sound, pressure etc. and to cooperatively pass their data through the network to a main location. Transmission of large sized images can be a bottleneck for a Wireless Multimedia Sensor Nodes due to its limited resources. Energy of the individual sensor and Security is also a major constraint in Wireless Multimedia Sensor Networks. In the proposed system the problem of security is overcome by sending the sensitive data through multiple node disjoint-paths so that it is impossible for an adversary to get the entire information by compromising a single path. The Images are transmitted within a low energy budget over the Wireless Sensor Networks by using unequal error protection. In addition, acknowledgements are used, to recover from the loss of image fractions and retransmitting it through an alternate path. Keywords-Wireless Sensor Networks, Network Security, Correlation, Unequal Error Protection, Image Quality.