Antônio L. Apolinário

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—In this paper we present an extension to the Kinect-Fusion algorithm that allows a robust real-time face tracking. This is achieved altering the original algorithm such that when the tracking algorithm fails, it uses a head pose estimation to give an initial guess to the Iterative Closest Point (ICP) algorithm. We show that this approach can handle more(More)
The past two decades showed a rapid growing of physically-based modeling of fluids for computer graphics applications. In this area, a common top down approach is to model the fluid dynamics by Navier-Stokes equations and apply a numerical techniques such as Finite Differences or Finite Elements for the simulation. In this paper we focus on fluid modeling(More)
—In general, augmented reality (AR) applications use polygonal models to augment a real scene. However, most of the medical applications have volumetric data to be visualized. Therefore, it is desirable to the medical AR systems to provide the visualization of these volumes into the real scene in real-time. In this paper we introduce a real-time(More)
Fig. 1. Some results of the proposed methods: Focus+context visualization based on smooth contours (left) and visible background with Computed Tomography (CT) (middle) and Magnetic Resonance Imaging (MRI) data (right). Each one of these methods takes advantage from the volume clipping to improve the visual perception of the augmented reality scene.(More)
Figure 1: Sequence of images showing an example of the results achieved with our method for a falling water scene simulated through smoothed particle hidrodynamics. Notice the presence of silhouette edges and foam, as well as the absence of striped artifacts common to the separated bilateral filter smoothing results. Abstract We present an extension to a(More)
Augmented Reality is a technology in which the user's view of a real scene is augmented with virtual information. To provide real-time performance, the major of its applications only support rigid interaction with the fiducial marker (i.e. marker-based augmented reality) or the part of the real scene being used as a natural marker (i.e. markerless augmented(More)