Garcia-Arteaga J.D.Brieva J.Lepore N.2020-03-262020-03-262015Proceedings of SPIE - The International Society for Optical Engineering; Vol. 968197816284191600277786Xhttps://hdl.handle.net/20.500.12585/9025Retinal images are used for diagnostic purposes by ophthalmologists. However, despite controlled conditions in acquisition retinal images often suffer from non-uniform illumination which hinder their clinical use. In this work we propose the compensation of the illumination by modeling the intensity as a sum of non-stationary signals using bidimensional empirical mode decomposition (BEMD). We compare the estimation and compensation of the background illumination with a widely used technique based retinal image pixel classification. The proposed method has shown to provide a better estimation of the background illumination, particularly in complicated areas such as the optic disk (usually bright) and the periphery of fundus images (usually dim). © 2015 SPIE.Recurso electrónicoapplication/pdfenghttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/conferenceObject10.1117/12.2211464Empirical mode decompositionFundus photographyIllumination compensationImage enhancementMedical imagePOphthalmologyRetinal imageBioinformaticsDiagnosisImage enhancementInformation scienceOphthalmologyBi dimensional empirical mode decomposition (BEMD)Bi-dimensional empirical mode decompositionsEmpirical mode decompositionEstimation and compensationFundus photographyIllumination compensationNon-uniform illuminationRetinal imageMedical imaginginfo:eu-repo/semantics/restrictedAccessAtribución-NoComercial 4.0 InternacionalUniversidad Tecnológica de BolívarRepositorio UTB2432983930057117284600571181517007201466399