Naslov
Uklanjanje šuma iz biomedicinskih slika korištenjem adaptivnih algoritma temeljenih na presjecištu intervala pouzdanosti
(Denoising of biomedical images using the adaptive algorithms based on the intersection of confidence intervals)

Autori
Mandić, Ivica

Vrsta, podvrsta i kategorija rada
Ocjenski radovi, diplomski rad, diplomski

Fakultet
Tehnički fakultet

Mjesto
Rijeka

Datum
04.04

Godina
2018

Stranica
24

Mentor
Lerga, Jonatan

Ključne riječi
adaptive filtering ; relative intersection of confidence interval (RICI) algorithm ; image denoising ; medical imaging

Sažetak
Diagnostics and treatments of numerous diseases are highly dependent on the quality of captured medical images. However, noise (during both acquisition and transmission) is one of the main factors that reduce their quality. This paper proposes an adaptive image denoising algorithm applied to enhance X-ray images. The algorithm is based on the modification of the intersection of confidence intervals (ICI) rule, called relative intersection of confidence intervals (RICI) rule. For each image pixel apart, a 2D mask of adaptive size and shape is calculated and used in designing the 2D local polynomial approximation (LPA) filters for noise removal. One of the advantages of the proposed method is the fact that the estimation of the noise free pixel is performed independently for each image pixel and thus, the method is applicable for easy parallelization in order to improve its computational efficiency. The proposed method was compared to the Gaussian smoothing filters, total variation denoising and fixed size median filtering and was shown to outperform them both visually and in terms of the peak signal-to- noise ratio (PSNR) by up to 7.99 dB.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika, Računarstvo

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