Low complexity image compression for wireless multimedia sensor networks

The problem of compression of video-surveillance sequences collected by a wireless multimedia sensor networks is studied. To reduce computation complexity, a low-complexity image compression scheme based on change detection and adapted JPEG is proposed. Change detection is used to locate the region of interest and cut down the data for transmission, fast DCT is used to reduce the computation complexity. Such an image compression scheme provides a graceful trade-off between the reconstructed images quality and the lifetime of sensor nodes. Simulations on the parking lot images are conducted to show the performance of our work.