Listar por autor "Tello, Alejandro"
Mostrando ítems 1-6 de 6
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Assessing Fuchs Corneal Endothelial Dystrophy Using Artificial Intelligence-Derived Morphometric Parameters From Specular Microscopy Images
Prada, Angelica M.; Quintero, Fernando; Mendoza, Kevin; Galvis, Virgilio; Tello, Alejandro; Romero, Lenny A; Marrugo, Andres G. (Cartagena de Indias, 2024-09-09)Purpose: The aim of this study was to evaluate the efficacy of artificial intelligence–derived morphometric parameters in characterizing Fuchs corneal endothelial dystrophy (FECD) from specular microscopy images. Methods: ... -
Automated corneal endothelium image segmentation in the presence of cornea guttata via convolutional neural networks
Sierra, Juan S.; Pineda, Jesus; Viteri, Eduardo; Rueda, Daniela; Tibaduiza, Beatriz; Berrospi, Rúben D.; Tello, Alejandro; Galvis, Virgilio; Volpe, Giovanni; Millán, María S.; Romero, Lenny A.; Marrugo Hernández, Andrés Guillermo (Cartagena de Indias, 2020-08)Automated cell counting in in-vivo specular microscopy images is challenging, especially in situations where single-cell segmentation methods fail due to pathological conditions. This work aims to obtain reliable cell ... -
Corneal endothelium assessment in specular microscopy images with Fuchs’ dystrophy via deep regression of signed distance maps
Sierra, Juan S.; Pineda, Jesus; Rueda, Daniela; Tello, Alejandro; Prada, Angélica M.; Galvis, Virgilio; Volpe, Giovanni; Millan, Maria S.; Romero, Lenny A.; Marrugo, Andres G. (Cartagena de Indias, 2023)Specular microscopy assessment of the human corneal endothelium (CE) in Fuchs’ dystrophy is challenging due to the presence of dark image regions called guttae. This paper proposes a UNet-based segmentation approach that ... -
Generating density maps for convolutional neural network-based cell counting in specular microscopy images
Sierra, J S; Pineda, J; Viteri, E; Tello, Alejandro; Millán, M S; Galvis, V; Romero, L A; Marrugo Hernández, Andrés Guillermo (Cartagena de Indias, 2020)Accurate endothelial cell density with specular microscopy is essential for correct clinical assessment of the cornea. Commercial specular microscopes incorporate automated cell segmentation methods to estimate cell density. ... -
Generative Adversarial Networks for Cell Segmentation in Human Corneal Endothelium
Mendoza, Kevin D.; Sierra, Juan S; Tello, Alejandro; Galvis, Virgilio; Romero, Lenny A.; Marrugo, Andrés G. (Cartagena de Indias, 2022)We generate synthetic images with a generative adversarial network (GAN) model trained with image patches from specular microscopy corneal endothelial cells. Preliminary results show it may be a suitable approach for ... -
Self-supervised Deep-Learning Segmentation of Corneal Endothelium Specular Microscopy Images
Sanchez, Sergio; Quintero, Fernando; Mendoza, Kevin; Prada, Prada; Tello, Alejandro; Galvis, Virgilio; Romero, Lenny A; Marrugo, Andres G (Cartagena de Indias, 2023)Computerized medical evaluation of the corneal endothelium is challenging because it requires costly equipment and specialized personnel, not to mention that conventional techniques require manual annotations that are ...
Universidad Tecnológica de Bolívar - 2017 Institución de Educación Superior sujeta a inspección y vigilancia por el Ministerio de Educación Nacional. Resolución No 961 del 26 de octubre de 1970 a través de la cual la Gobernación de Bolívar otorga la Personería Jurídica a la Universidad Tecnológica de Bolívar.