An Energy Efficient and Load Balancing Distributed Image Compression Algorithm in WMSNs
Feng Tian, Jia Liu, Enyan Sun, Chuanyun Wang · Procedia Engineering · 2011
Abstract According to the problem that resource-constrained always restricts image transmission in the wireless multimedia sensor networks (WMSNs), this paper combines with theory of parallel computing and puts forward a kind of energy efficient and load balancing distributed image compression algorithm based on the JPEG2000. The algorithm introduces node competitive factor and communication cost function for the purpose of making the most of the limited resource to transmit more images and maintaining load balancing in the image compression process. In addition, the algorithm encodes the information separately which is divided accord to the frequency after wavelet transform, in order to relieve the load of the cluster head and prolong the network life time. Further simulations demonstrate that the algorithm can ensure a certain quality of the reconstructed image, reduce 30% energy consumption of the cluster head node, greatly balance the load of network nodes and effectively prolong 15% of the network life time.