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Ítem Un método de compresión de mallas basado en una representación simplicial(Universidad Icesi, 2008-12-18) Navarro Newball, Andrés Adolfo; Herrera Botero, Francisco Julián; Múnera Salazar, Luis EduardoPolygonal meshes, which approximate the surface of an object, are the most common method for representing three dimensional objects. Here, in order to attain efficiency, the triangle is the most used polygon. However, the number of required triangles increases as more realism is needed in a complex form. For this reason, mesh optimization techniques have been created that keep resolution and enhances performance. This way, the polygonal mesh occupies less memory space. This paper presents a mesh compression technique which is based on mathematical topology and the simplicial representation. This technique was developed in order to compress meshes that were going to be sent through Internet.Ítem Aplicando métodos cualitativos y cuantitativos para mejorar la interfaz gráfica de usuario del simulador de cirugía WESST-OT(Universidad Icesi, 2009-08-18T20:53:57Z) Navarro Newball, Andrés Adolfo; Herrera Botero, Francisco Julián; Ríos Katto, Carlos F.; Peñeñori, Víctor M.The graphic interface (GUI) from the WESST-OT Simulator was validated using quantitative and qualitative human computer interaction (HCI) methods. In order to achieve this, surveys were applied. Also, GUI design principles were analyzed in the context of WESST-OT. Finally, the goals, objects, methods and rule selection quantitative model (GOMS) was applied. The information acquired was used to enhance WESST-OT’s GUI and at the end was validated following the same methodology.Ítem Incorporación de un módulo para la práctica de la habilidad de ubicación espacial al simulador de otorrinolaringología - WESST -OT(Universidad Icesi, 2006-10-11) Mazuera Grisales, Eduardo; Vélez Beltrán, Jorge Alberto; Gamboa , Carlos A.; Herrera Botero, Francisco Julián; Navarro Newball, Andrés Adolfo; Cardona Aristizabal, AndreaWith the development of this project, a great aide is presented to the user of the prototype «Análisis, diseño e implementación del prototipo de un entorno de práctica de habilidades quirúrgicas en Otorrinolaringología». This aide will help the user to acquire the space-anatomic positioning ability, which allows the user to associate what he sees on 2D radiological slices with what he sees through the virtual endoscope of the simulation environment. To achieve the cited ability, the user is presented with radiological images (tomography slices) with red marks that represent the current position of the endoscope he is using in the simulation environment.Ítem Entorno para el intercambio de instrumentos quirúrgicos en un simulador de otorrinolaringología WESST-ST(Universidad Icesi, 2006-10-11) Ramírez Vélez, Andrés Felipe; Roldán Correa, Fernando José; Herrera Botero, Francisco Julián; Navarro Newball, Andrés Adolfo; Vélez Beltrán, Jorge AlbertoIn this paper the development of a complementary module for the WESST - OT simulator is presented. The module allows the interchange of surgical instruments used in a nasal sinus surgery. This module was developed taking into account that in the original simulator it was possible to interact only with an endoscope and that the nasal sinus surgery requires more surgical instruments such as the Blakesley and Kerrison forceps, useful to support other techniques in addition to the orientation skill.Ítem Incorporación de la habilidad de coordinación y del módulo de personalización de sesiones al simulador de otorrinolaringología Wesst-OT(Universidad Icesi, 2007-08-01) Ramírez, Oscar Darío; Ospina C., Angélica María; Hurtado, Lina María; Herrera Botero, Francisco Julián; Castrillón S., Mauricio; Vélez Beltrán, Jorge Alberto; Navarro Newball, Andrés AdolfoThis paper describes the process of incorporating a virtual environment for the practice of the coordination skill to the Web Environment for Surgical Skills in Training in Otolaryngology, WESST - OT. Additionally, a complementary module which allows session customization and the inclusion of anomalies and pathologies in the paranasal region is presented.Ítem Implementación de una API para la interacción del guante P5 con entornos de realidad virtual desarrollados en Java y Java 3D(Universidad Icesi, 2008-03-27) Marín Tobón, César Augusto; Parra S., Ricardo Antonio; Herrera Botero, Francisco Julián; Navarro Newball, Andrés Adolfo; Escallón D., Antonio JoséThis paper presents a specifific API’s implementation process, this API allows the interaction of the P5 glove with virtual reality environments implemented in the programming language Java and its tool Java 3D. Also, an example program is implemented using the API. Then, a CPU and physical memory consumption tests is performed with the example. Finally, the conclusions obtained are specified.Ítem Lentes mágicas : Una herramienta de apoyo para la visualización en 3D(Universidad Icesi, 2008-03-27) Ortiz, Carlos Humberto; Popó, José Ricardo; Herrera Botero, Francisco Julián; Navarro Newball, Andrés AdolfoMagic lenses are tools which allow changing a work area according to specific selections and properties. This paper describes the work done aimed to extend the concept of magic lenses to allow seeing inside 3D models which are uploaded from an example application. In order to implement the lenses a ray tracing algorithm for image synthesis was used.Ítem Anatomy guided bottom up creature skinning(Universidad Icesi, 2011-07-13T22:40:32Z) Loaiza Buitrago, Diego Fernando; Navarro Newball, Andrés Adolfo; Herrera Botero, Francisco JuliánIt is possible to guide skin construction from the creature’s inner anatomy. This paper introduces a method where is provided the system with bones, a set of muscles and a set of subsidiary organs in order to generate the mesh of the skin. The method generates a set of feature points from the inner anatomy. Then, it projects the feature points on a mirror plane which cuts the creature in the middle. Once in the plane, triangulate and reflect the points and adjust the skin’s mesh inflating it and deflating it until all skin vertices are within some threshold of the underlying anatomy. Finally, fur is generated with offsets calculated from the skin’s mesh. Feature point generation and automatic mesh generation strongly rely on the anatomical knowledge provided to the algorithm. However, it eliminates the need of a preexisting skin mesh. The resulting mesh is consistent with the underlying anatomy.