Quality Evaluation Method for Underwater Image Communication

A simulation based on Gilbert-Elliot packet loss model is developed to simulate an image transmitting system in underwater acoustic channel. This developed system is applied as a platform to study the relation between image quality assessment parameter PSNR, image activity measure (IAM) and channel ’ s packet loss rate. A group of sample images were transmitted in this communication system and a formula of PSNR, the initial value of IAM, and packet loss rate was fitted by the data from the degra ded sample images . With the help of the fitted formula, then we are able to predict the possible quality of image transmi ssion, and beforehand choices of channel or source processing techniques in the communication system becomes possible, too. Experimental results indicate that the predicting method of underwater image transmitting quality based on Gilbert-Elliot model can provide certain references for establishing strategies of underwater image transmission.

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