Projeção interativa estereoscópica: visualização de modelos de objetos reais em ambiente virtual

Abstract

Simulations aim to provide realism into real digitalized objects observation, although the standard method used is the tridimensional objects reconstruction based on mesh points or cloud points, with color and texture rendering. Conversely, there is the tridimensional visualization, that makes no reconstruction, but instead uses techniques to search objects projection simulating how human beings’ eyes capture images. Eyes capture two distinct images, one for the left eye and one for the right eye, forcing the brain to interpret them, resulting into depth notion (stereoscopy), what is understood as tridimensional in real life. This is called as binocular vision, also called stereo vision. In order to obtain a visualization that allows completely observing an object with depth and proportion notion, both techniques, tridimensional and stereoscopy must be applied. As well giving to the observer freedom to manipulate all acquired perspectives, by means, manipulate the stereoscopy tridimensional visualization is the same to provide interactivity. This work presents the results of an applied research, which has exploratory objectives and experimental proceedings that had the purpose of developing a stereoscopy visualization which enables observers to manipulate it, in other words, interact with a visualization to observe it by all possible angles, simulating observation of a real object. Using Full Frames Semi-Spherical Scanner acquirements, it is possible to acquire an object which allows stereoscopy interactive visualization generation of it, without needing treatment or epipolar geometry adjustments into the stereo pair. The amount of acquired data can overpass third thousand images, that said, an images memory loading and management algorithm was elaborated to assure visualization with no interruptions or delays. The acquired objects to stereoscopy generation have different sizes, textures, colors and materials in order to enable algorithms performance verification. This visualization enables learning objects development, that nowadays are debated and pointed by scientific community as supporting tools into teach/learning process. This way, it was made the projection through Digital Light Processing (DLP) projector using active polarized eyeglasses and keyboard interaction, to all these objects.