Title: Closed-loop method to improve image PSNR in pyramidal CMAC networks

Authors: Hung-Ching Lu, Ted Tao

Addresses: Department of Electrical Engineering, Tatung University, No. 40, Sec. 3, Chung Shan North Road, Taipei 104, Taiwan. ' Department of Electrical Engineering, Kuang Wu Institute of Technology, No. 151, I-te Street, Taipei 112, Taiwan

Abstract: A closed-loop method to improve image the peak signal to noise ratio (PSNR) in pyramidal cerebellar model arithmetic computer (CMAC) networks is proposed in this paper. We propose a novel coding procedure, which can make the CMAC network learn the feature of the transmitted image with only one-shot training, so some sampled data of the original image can quickly be sent to reconstruct a coarse image. In the meantime, differential codes are transmitted to improve the image quality using the closed-loop method in pyramidal CMAC networks. As a result, the quality of the reconstructed image can be improved at the bottom of the pyramidal CMAC networks. Finally, the experimental results demonstrate that the proposed method can give higher PSNR at a lower bit rate after reconstruction, when it is applied to JPEG compression.

Keywords: CMAC networks; image compression; pyramid; PSNR; peak signal to noise ratio; coding; image quality; multimedia.

DOI: 10.1504/IJCAT.2006.008641

International Journal of Computer Applications in Technology, 2006 Vol.25 No.1, pp.22 - 29

Published online: 13 Jan 2006 *

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