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Journal from gdlhub / 2021-01-20 15:23:52
Oleh : Yasin Yousif Al-Aboosi, Radhi Sehen Issa, Ali Khalid Jassim, Telkomnika
Dibuat : 2021-01-13, dengan 1 file

Keyword : colored noise, denoising, estimation; PSNR, wavelet transform
Url : http://journal.uad.ac.id/index.php/TELKOMNIKA/article/view/14381
Sumber pengambilan dokumen : Web

In many applications, Image de-noising and improvement represent essential processes in presence of colored noise such that in underwater. Power spectral density of the noise is changeable within a definite frequency range, and autocorrelation noise function is does not like delta function. So, noise in underwater is characterized as colored noise. In this paper, a novel image de-noising method is proposed using multi-level noise power estimation in discrete wavelet transform with different basis functions. Peak signal to noise ratio (PSNR) and mean squared error represented performance measures that the results of this study depend on it. The results of various bases of wavelet such as: Daubechies (db), biorthogonal (bior.) and symlet (sym.), show that denoising process that uses in this method produces extra prominent images and improved values of PSNR than other methods.

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