Image quality and lifetime co-optimization in wireless multi-camera surveillance systems

Abstract

We proposed a scheme to improve the lifetime of multi-camera system and the quality of its captured image by appropriate sharing of such resources among camera nodes as battery and memory based on low power wireless communication links among camera nodes. The proposed scheme determines which camera node captures the event and which camera node stores the captured event by jointly considering residual battery charge, remaining memory space, wireless communication overhead, and the image quality captured by each camera node. Experimental result has shown that the proposed scheme achieves up to 4x lifetime extension as well as 53.32% improvement of the image quality (as measured by the face detection rate) compared to a conventional method.