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Improving the blind restoration of retinal images by means of point-spread-function estimation assessment
dc.contributor.author | Marrugo Hernandez, Andrés Guillermo |
dc.contributor.author | Millán Garcia-Varela, M. Sagrario |
dc.contributor.author | Šorel, Michal |
dc.contributor.author | Kotera, Jan |
dc.contributor.author | Šroubek, Filip |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Òptica i Optometria |
dc.date.accessioned | 2015-06-09T10:54:59Z |
dc.date.created | 2014 |
dc.date.issued | 2014 |
dc.identifier.citation | Marrugo Hernandez, A. [et al.]. Improving the blind restoration of retinal images by means of point-spread-function estimation assessment. A: International Symposium on Medical Information Processing and Analysis. "Proceedings of SPIE 9287, 10th International Symposium on Medical Information Processing and Analysis". Cartagena de Indias: 2014. |
dc.identifier.isbn | 978-162841362-5 |
dc.identifier.uri | http://hdl.handle.net/2117/28238 |
dc.description.abstract | 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 for the correct assessment of PSF estimation in retinal images for restoration by means of space-invariant or space-invariant blind deconvolution. Our method is based on a decomposition in Zernike coefficients of the estimated PSFs to identify valid PSFs. This significantly 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. |
dc.language.iso | eng |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Ciències de la salut::Medicina::Oftalmologia |
dc.subject.lcsh | Diagnostic Imaging |
dc.subject.lcsh | Retina--Imaging |
dc.subject.other | Deblurring |
dc.subject.other | Deconvolution |
dc.subject.other | Medical image |
dc.subject.other | Point-spread-function |
dc.subject.other | Retinal image |
dc.title | Improving the blind restoration of retinal images by means of point-spread-function estimation assessment |
dc.type | Conference report |
dc.subject.lemac | Diagnòstic per la imatge |
dc.subject.lemac | Retina -- Malalties |
dc.contributor.group | Universitat Politècnica de Catalunya. GOAPI - Grup d'Òptica Aplicada i Processament d'Imatge |
dc.identifier.doi | 10.1117/12.2073820 |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 15521074 |
dc.description.version | Postprint (published version) |
dc.date.lift | 10000-01-01 |
local.citation.author | Marrugo Hernandez, A.; Millan, M.; Šorel, M.; Kotera, J.; Šroubek, F. |
local.citation.contributor | International Symposium on Medical Information Processing and Analysis |
local.citation.pubplace | Cartagena de Indias |
local.citation.publicationName | Proceedings of SPIE 9287, 10th International Symposium on Medical Information Processing and Analysis |