Spatial Images Feature Extraction Based on Bayesian Nonlocal Means Filter and Improved Contourlet Transform

المؤلفون المشاركون

Du, Junping
Han, Pengcheng

المصدر

Journal of Applied Mathematics

العدد

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

الناشر

Hindawi Publishing Corporation

تاريخ النشر

2012-04-24

دولة النشر

مصر

عدد الصفحات

16

التخصصات الرئيسية

الرياضيات

الملخص EN

Spatial images are inevitably mixed with different levels of noise and distortion.

The contourlet transform can provide multidimensional sparse representations of images in a discrete domain.

Because of its filter structure, the contourlet transform is not translation-invariant.

In this paper, we use a nonsubsampled pyramid structure and a nonsubsampled directional filter to achieve multidimensional and translation-invariant image decomposition for spatial images.

A nonsubsampled contourlet transform is used as the basis for an improved Bayesian nonlocal means (NLM) filter for different frequencies.

The Bayesian model adds a sigma range in image a priori operations, which can be more effective in protecting image details.

The NLM filter retains the image edge content and assigns greater weight to similarities for edge pixels.

Experimental results both on standard images and spatial images confirm that the proposed algorithm yields significantly better performance than nonsubsampled wavelet transform, contourlet, and curvelet approaches.

نمط استشهاد جمعية علماء النفس الأمريكية (APA)

Han, Pengcheng& Du, Junping. 2012. Spatial Images Feature Extraction Based on Bayesian Nonlocal Means Filter and Improved Contourlet Transform. Journal of Applied Mathematics،Vol. 2012, no. 2012, pp.1-16.
https://search.emarefa.net/detail/BIM-993277

نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)

Han, Pengcheng& Du, Junping. Spatial Images Feature Extraction Based on Bayesian Nonlocal Means Filter and Improved Contourlet Transform. Journal of Applied Mathematics No. 2012 (2012), pp.1-16.
https://search.emarefa.net/detail/BIM-993277

نمط استشهاد الجمعية الطبية الأمريكية (AMA)

Han, Pengcheng& Du, Junping. Spatial Images Feature Extraction Based on Bayesian Nonlocal Means Filter and Improved Contourlet Transform. Journal of Applied Mathematics. 2012. Vol. 2012, no. 2012, pp.1-16.
https://search.emarefa.net/detail/BIM-993277

نوع البيانات

مقالات

لغة النص

الإنجليزية

الملاحظات

Includes bibliographical references

رقم السجل

BIM-993277