Improving the blind restoration of retinal images by means of point-spread-function estimation assessment

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985556%3A_____%2F15%3A00442676" target="_blank" >RIV/67985556:_____/15:00442676 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1117/12.2073820" target="_blank" >http://dx.doi.org/10.1117/12.2073820</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1117/12.2073820" target="_blank" >10.1117/12.2073820</a>

Result language
angličtina
Original language name
Improving the blind restoration of retinal images by means of point-spread-function estimation assessment
Original language description
Retinal images often suffer from blurring which hinders disease diagnosis and progression assessment. The restoration of the images is carried out by means of blind deconvolution, but the success of the restoration depends on the correct estimation of the point-spread-function (PSF) that blurred the image. The restoration can be space-invariant or space-variant. Because a retinal image has regions without texture or sharp edges, the blind PSF estimation may fail. In this paper we propose a strategy forthe correct assessment of PSF estimation in retinal images for restoration by means of space-invariant or space-variant blind deconvolution. Our method is based on a decomposition in Zernike coe cients of the estimated PSFs to identify valid PSFs. This signicantly improves the quality of the image restoration revealed by the increased visibility of small details like small blood vessels and by the lack of restoration artifacts.
Czech name
—
Czech description
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Project
<a href="/en/project/GA13-29225S" target="_blank" >GA13-29225S: Image Blind Deconvolution in Demanding Conditions</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of 10th International Seminar on Medical Information Processing and Analysis (SIPAIM) 2014
ISBN
978-1-62841-362-5
ISSN
0277-786X
e-ISSN
—
Number of pages
6
Pages from-to
—
Publisher name
SPIE
Place of publication
Washington
Event location
Cartagena de Indias
Event date
Oct 10, 2014
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000349328300046

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