A new algorithm for image denoising based on tetrolet transform

Cai-lian Li; Ji-xiang Sun; Yao-hong Kang

doi:10.1117/12.866702

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19 August 2010 A new algorithm for image denoising based on tetrolet transform

Cai-lian Li; Ji-xiang Sun; Yao-hong Kang

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Proceedings Volume 7820, International Conference on Image Processing and Pattern Recognition in Industrial Engineering; 78201L (2010) https://doi.org/10.1117/12.866702
Event: International Conference on Image Processing and Pattern Recognition in Industrial Engineering, 2010, Xi'an, China

Abstract

This paper introduces a new class of denoising function that has continuous derivative for image denoising. And a new algorithm are presented. First, we apply tetrolet transform to noise image and obtained tetrolet coefficient. Second, by using the new denoising function, we present an adaptive method based on SURE Risk. Instead of the global hard-thresholding algorithm for image denoising, we minimize an estimate of the mean square error by using adaptive genetic algorithm. At last Numerical experiments show that the proposed new algorithm can significantly outperform the original hard-thresholding method both in terms of PSNR and in visual quality.

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Cai-lian Li, Ji-xiang Sun, and Yao-hong Kang "A new algorithm for image denoising based on tetrolet transform", Proc. SPIE 7820, International Conference on Image Processing and Pattern Recognition in Industrial Engineering, 78201L (19 August 2010); https://doi.org/10.1117/12.866702

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