Dijital radyografi sistemlerinde gürültünün konum ve frekans uzayında irdelenmesi

Year 2017, Volume: 21 Issue: 6, 1360 - 1366, 01.12.2017

Turan Olğar, Ph.d.

https://doi.org/10.16984/saufenbilder.302423

Abstract

Dijital radyografi
görüntüsündeki gürültü miktarı, düşük kontrasttaki lezyonların saptanmasına
önemli ölçüde sınırlama getirir. Bu çalışmanın amacı bir dijital radyografi
görüntüsünde, gürültü bileşenlerinin hem konum hem de frekans uzayında
saptanmasıdır. Konum uzayında gürültü analizi bağıl gürültü varyansı analiz
yöntemi ile, frekans uzayında gürültü analizi ise normalize gürültü güç
spektrumunun ölçülmesi aracılığıyla gerçekleştirilmiştir.

Keywords

Gürültü, Varyans, Gürültü Güç Spektrumu

Investigation of the noise in spatial and frequency domain for digital radiography systems

Abstract

Noise amount in digital radiographic image puts a
limitation on detection of low contrast lesions. The aim of this study is to
investigate of the noise component in digital radiographic image in both
spatial and frequency domain. Noise analysis in spatial and frequency domain was
performed by using relative noise variance and noise power spectra measurement
methods, respectively.  

Keywords

Noise, Variance, Noise Power Spectra

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