توسعه یک الگوریتم برای کاهش پراکندگی نوری در تصاویر فلورسانس بازتابی با استفاده از فیلتر وینر در حوزه موجک

نجف زاده, ابراهیم and حجازی, مرجانه and محمدرضا, هانیه and رودین, مارکوس and استوکر, فولورین and شیرکوند, افشان (1388) توسعه یک الگوریتم برای کاهش پراکندگی نوری در تصاویر فلورسانس بازتابی با استفاده از فیلتر وینر در حوزه موجک. در: World Congress on Medical Physics and Biomedical Engineering, September 7 - 12, 2009 , Munich, Germany.

Text - Published Version

Official URL: http://link.springer.com/chapter/10.1007/978-3-642...


Development of an algorithm for reducing scatter distribution in fluorescence reflectance images using Wiener filter in Wavelet domain

English Abstract

Fluorescent reflectance imaging (FRI) is a diagnostic method with the high specificity which is based on spatial distribution of fluorescence intensity at the surface of a biological tissue. The contribution of scattering effects to the fluorescence intensity prevents the detection of deep seated tumors. The aim of this paper is to develop an image processing algorithm for reducing the scattering effects in FRI images. For this purpose, an experimental setup was implemented using a cooled CCD camera and a near infrared (NIR) laser. We used the setup to obtain FRI images of fluorescent point source inside a tissue like phantom. The acquired images were deblurred by the proposed algorithm which includes a Wiener filter in Wavelet domain. The deblurring method was evaluated qualitatively by full width at half maximum intensity (FWHM) and signal to noise ratio (SNR). In comparison with the conventional blind deconvolution method, the FWHM and CNR were reduced 5 pixels and 2 db. In conclusion the proposed algorithm can be used in wide range of optical imaging modalities for detecting subtle and deep lesions.

Item Type:Conference or Workshop Item (Speech)
زبان سند : انگلیسی
نویسنده اول :ابراهیم نجف زاده
نویسنده مسئول :مرجانه حجازی
نویسنده :هانیه محمدرضا
نویسنده :مارکوس رودین
نویسنده :فولورین استوکر
نویسنده :افشان شیرکوند
کلیدواژه ها (انگلیسی):Fluorescent molecular imaging, bandpass filter, Wiener filter, boxcar function, morphology process, deconvolution method.
Subjects:WN Radiology . Diagnostic Imaging
WW Ophthalmology
Divisions:Faculty of Medicine > Department of Basic Sciences > Department of Medical Physics
ID Code:4944
Deposited By: Mr Ebrahim najafzadeh
Deposited On:02 Sep 1392 13:28
Last Modified:02 Sep 1392 13:28

Repository Staff Only: item control page

Document Downloads

More statistics for this item...