Examinando por Autor "Valencia-Díaz, E. (Edison)"

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    Desarrollo de la línea de Bioinstrumentación, señales e imágenes médicas en el programa de Ingeniería Biomédica de la EIA-CES
    (2014-04-20) Torres-Villa, R. A. (Róbinson Alberto); Ramírez-Giraldo, J. C. (Juan Carlos); Valencia-Díaz, E. (Edison)
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    Descripción del método log-vision de procesamiento de imágenes en color en aplicaciones a imágenes oftálmicas
    (2014-04-20) Valencia-Díaz, E. (Edison)
    This paper describes an algorithm to sharpen a colour digital image based on S-CIE LAB extension. S-CIE LAB involves a series of smoothing spatial filters in the opponent color space to approximate the contrast sensitivity functions of the human vision system. The filters are linear combinations of Gaussian masks. The algorithm combines these spatial filters with the Laplacian operator in each opponent channel to obtain the sharpened image. The resulting image is then subtracted from the original image in each opponent channel and back transformed to the device independent representation space (XYZ) to obtain the final sharpened image. This article describes two examples that use the sharpening algorithm with medical images of the ophthalmic area.
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    Diseño de prototipo de simulador para entrenamiento en cirugía laparoscópica
    (2014-04-30) García-Murillo, J. C. (Javier); Arias-Correa, M. (Mauricio); Valencia-Díaz, E. (Edison)
    The ethical constraints imposed on the training in laparoscopic surgery in humans and animals have led to the increasingly common trend of using simulation devices. Commercially available simulators for laparoscopic surgery can be improved if tailored to the specific needs of professionals. The line of Biomechatronics Simulators of the biomedical engineering research group GIBEC, has developed several prototypes of simulation for laparoscopic surgery, which have evolved based on the recommendations from health professionals at the CES University. The results presented here demonstrate the group’s progress in developing those devices.
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    Modelo de un simulador de la maniobra de la endoscopia gástrica basado en video
    (2014-04-23) Hernandez-Quiceno, V. (Vanessa); Obregon-Henao, G. (Gabriel); González-Ramírez, F. (Felipe); Valencia-Díaz, E. (Edison)
    The following paper deals with a simple model of a gastric endoscopy procedure and a plastic model of the stomach and its distension. The correct use of imaging helps in the development of virtual reality systems, and provides a greater realism to the simulation itself. The goal is to experience the possibility of building patient simulator systems in Colombia, using locally available technology, at low costs and intended for the training of medical students.