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Joint Distortion-Energy control for energy harvesting video sensor nodes

A joint Distortion-Energy (D-E) control method for perpetual energy harvesting video sensor node is proposed. Its objective is to minimize the average distortion of compressed video without energy depletion by exploring D-E relation and energy harvesting prediction method. The proposed method is performed by controlling some D-E control parameters such as the quantization parameter, frame rate, and operating frequency under the delay and energy constraints for perpetual operation. The performance of the proposed method was compared with those of various modes with the fixed frame rate and the perfect harvested energy prediction. The proposed method guaranteed perpetual operation of a video sensor node with acceptable video quality for several days.