Noise Estimation for Single-Slice Sinogram of Low-Dose X-Ray Computed Tomography Using Homogenous Patch

المؤلفون المشاركون

Li, Ming
Liao, Zhiwu
Chen, Wufan
Hu, Shaoxiang

المصدر

Mathematical Problems in Engineering

العدد

المجلد 2012، العدد 2012 (31 ديسمبر/كانون الأول 2012)، ص ص. 1-16، 16ص.

الناشر

Hindawi Publishing Corporation

تاريخ النشر

2011-09-28

دولة النشر

مصر

عدد الصفحات

16

التخصصات الرئيسية

هندسة مدنية

الملخص EN

We present a new method to estimate noise for a single-slice sinogram of low-dose CT based on the homogenous patches centered at a special pixel, called center point, which has the smallest variance among all sinogram pixels.

The homogenous patch, composed by homogenous points, is formed by the points similar to the center point using similarity sorting, similarity decreasing searching, and variance analysis in a very large neighborhood (VLN) to avoid manual selection of parameter for similarity measures.Homogenous pixels in the VLN allow us find the largest number of samples, who have the highest similarities to the center point, for noise estimation, and the noise level can be estimated according to unbiased estimation.Experimental results show that for the simulated noisy sinograms, the method proposed in this paper can obtain satisfied noise estimation results, especially for sinograms with relatively serious noises.

نمط استشهاد جمعية علماء النفس الأمريكية (APA)

Liao, Zhiwu& Hu, Shaoxiang& Li, Ming& Chen, Wufan. 2011. Noise Estimation for Single-Slice Sinogram of Low-Dose X-Ray Computed Tomography Using Homogenous Patch. Mathematical Problems in Engineering،Vol. 2012, no. 2012, pp.1-16.
https://search.emarefa.net/detail/BIM-1029717

نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)

Liao, Zhiwu…[et al.]. Noise Estimation for Single-Slice Sinogram of Low-Dose X-Ray Computed Tomography Using Homogenous Patch. Mathematical Problems in Engineering No. 2012 (2012), pp.1-16.
https://search.emarefa.net/detail/BIM-1029717

نمط استشهاد الجمعية الطبية الأمريكية (AMA)

Liao, Zhiwu& Hu, Shaoxiang& Li, Ming& Chen, Wufan. Noise Estimation for Single-Slice Sinogram of Low-Dose X-Ray Computed Tomography Using Homogenous Patch. Mathematical Problems in Engineering. 2011. Vol. 2012, no. 2012, pp.1-16.
https://search.emarefa.net/detail/BIM-1029717

نوع البيانات

مقالات

لغة النص

الإنجليزية

الملاحظات

Includes bibliographical references

رقم السجل

BIM-1029717