Blind restoration of retinal images degraded by space-variant blur with adaptive blur estimation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985556%3A_____%2F13%3A00422848" target="_blank" >RIV/67985556:_____/13:00422848 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1117/12.2025134" target="_blank" >http://dx.doi.org/10.1117/12.2025134</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1117/12.2025134" target="_blank" >10.1117/12.2025134</a>
Alternative languages
Result language
angličtina
Original language name
Blind restoration of retinal images degraded by space-variant blur with adaptive blur estimation
Original language description
Retinal images are often degraded with a blur that varies across the eld view. Because traditional deblurring algorithms assume the blur to be space-invariant they typically fail in the presence of space-variant blur. In this work we consider the blur tobe both unknown and space-variant. To carry out the restoration, we assume that in small regions the space-variant blur can be approximated by a space-invariant point-spread function (PSF). However, instead of deblurring the image on a per-patch basis,we extend individual PSFs by linear interpolation and perform a global restoration. Because the blind estimation of local PSFs may fail we propose a strategy for the identication of valid local PSFs and perform interpolation to obtain the space-variant PSF. The method was tested on articial and real degraded retinal images. Results show signicant improvement in the visibility of subtle details like small blood vessels.
Czech name
—
Czech description
—
Classification
Type
D - Article in proceedings
CEP classification
JD - Use of computers, robotics and its application
OECD FORD branch
—
Result continuities
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
Others
Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Proceedings ot the 8th Iberoamerican Optics Meeting and 11th Latin American Meeting on Optics, Lasers, and Applications
ISBN
978-0-8194-9601-0
ISSN
0277-786X
e-ISSN
—
Number of pages
8
Pages from-to
"8785D1 "-" 1-8785D1 - 8"
Publisher name
SPIE
Place of publication
Bellingham
Event location
Porto
Event date
Jul 22, 2013
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000328616100190