Dijital radyografi sistemlerinde gürültünün konum ve frekans uzayında irdelenmesi

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.

Anahtar Kelimeler:

Gürültü, Varyans, Gürültü Güç Spektrumu

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

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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