It 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. ResumenEs posible generar la malla de la piel a partir de la anatomía interna. Este artículo presenta un método que recibe huesos, un conjunto de músculos y un conjunto de órganos complementarios para generar la piel. El método inicia en el fondo de la anatomía y genera una serie de puntos clave que luego proyecta en un plano espejo que corta la criatura por la mitad. Una vez en el plano, los puntos son triangulados y reflejados. Posteriormente, la malla de la piel es ajustada expandiéndola y contrayéndola hasta que está a una distancia predeterminada de la anatomía. Finalmente, el pelo es generado con desplazamientos a partir de malla de la piel. El método depende del conocimiento anatómico para generar los puntos clave, pero elimina la necesidad de una malla de piel preexistente. La malla creada es anatómicamente consistente con la anatomía de la criatura.

We examined the views of patients and health specialists about the value of simulations of endoscopic procedures. The simulators used were the Interactive Module for Cavity Navigation (IMCA) and the Web Environment for Surgical Skills Training in Otolaryngology (WESST-OT). Fourteen patients were given an explanation about the simulations and then completed a questionnaire. The majority of patients (86%) stated that they would feel confident after an explanation with the simulation environment and most of them (93%) said that they would like to have post-procedural information available via the Web. The majority of the specialists stated that they would use the simulation environment for patient education and most of them said that they would publish post-procedural information on the Web. The present study provides preliminary evidence that the IMCA and the WESST-OT simulation environments can be used to enhance the experience of patients both pre- and post-procedure.

No abstract

Magic 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. KEYWORDSRay tracing, magic lenses, algorithm, 3D model, computer graphics, human computer interaction. RESUMENLas lentes mágicas son herramientas que permiten modificar parte de un área de trabajo de acuerdo con una selección específica y a la propiedad que dicha herramienta posea. Este artículo describe el trabajo realizado para extender el concepto de lente mágica, para permitir ver dentro de modelos en tres dimensiones (3D) que se cargan en una aplicación desarrollada como ejemplo. Para la implementación de las lentes se utilizó un algoritmo para la síntesis de imágenes denominado trazador de rayos. PALABRAS CLAVETrazador de rayos, lente mágica, algoritmo, modelos 3D, computación gráfica, interacción humano computadora.

This 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.