Browsing Portuguese Meeting on Computer Graphics 2011 - SIACG 2011 by Title

Now showing items 10-29 of 33

    • GPU Collision Detection in Conformal Geometric Space 

      Roa, Eduardo; Theoktisto, Víctor; Fairén, Marta; Navazo, Isabel (The Eurographics Association, 2021)
      We derive a conformal algebra treatment unifying all types of collisions among points, vectors, areas (defined by bivectors and trivectors) and 3D solid objects (defined by trivectors and quadvectors), based in a reformulation ...

    • Graph-Based Reflectance Segmentation 

      Garces, Elena; Gutierrez, Diego; Lopez-Moreno, Jorge (The Eurographics Association, 2021)
      Most of the unsupervised image segmentation algorithms use just RGB color information in order to establish the similarity criteria between pixels in the image. This leads in many cases to a wrong interpretation of the ...

    • GraphJudge: A System for Assisted Assessment of Computer Graphics Assignments 

      Rocha, Lindomar; Rodrigues, Rui (The Eurographics Association, 2021)
      We describe a system for submission, automated validation and assisted evaluation of Computer Graphics' assignments. This type of assessments has a series of specific challenges associated to it, namely the analysis of ...

    • HaloDot: Visualization of the Relevance of Off-Screen Objects 

      Gonçalves, Tiago; Afonso, Ana Paula; Carmo, Maria Beatriz; Pombinho, Paulo (The Eurographics Association, 2021)
      The increasing usage of maps on mobile devices reinforce the need to solve some visualization and usability issues that constraint the user's interaction with information visualization applications. When exploring map ...

    • High-quality Compression of Mipmapped Textures 

      Andujar, C. (The Eurographics Association, 2021)
      High-quality texture minification techniques, including trilinear and anisotropic filtering, require texture data to be arranged into a collection of prefiltered texture maps called mipmaps. In this paper we present a ...

    • Inexpensive 3D Stereo for Two Users Using a Single Display 

      Re, Armando de la; Martorell, Eduardo; Camahort, Emilio; Abad, Francisco (The Eurographics Association, 2021)
      Multiuser computer systems allow several users to collaborate on the same task. Medium sized displays, like workbenches or tabletops provide a shared view of the task and a set of input devices to interface with the system. ...

    • Interacting with Outdoor Sports Performance Data 

      Lopes, J. M. Brisson (The Eurographics Association, 2021)
      This paper presents a portable application to visualize performance data obtained from GPS devices in outdoor sports (e.g., ski, running, BTT) that also record data as heartbeat rate. GPS file formats are analyzed and a ...

    • Interactive Elastic Deformation of 3D Images 

      Prados, Francisco J. R.; Salas, Alejandro León; Torres, Juan Carlos (The Eurographics Association, 2021)
      The standard workflow of a haptic device takes the position of the effector in space and sends a force vector in return. This paradigm naturally meets the behaviour shown in elastic materials, where the resistant force of ...

    • Interactive Visualizations of Automatic Debugging Reports 

      Riboira, André; Rodrigues, Rui; Abreu, Rui (The Eurographics Association, 2021)
      Automated debugging techniques, based on statistical analysis of historical test executions data, have recently received considerable attention due to their diagnostic capabilities. However, current automatic debugging ...

    • Investigating the Differences Between European Portuguese Sounds: An Approach Using Polygonal Mesh Comparison 

      Martins, Paula; Silva, Samuel; Oliveira, Catarina; Ferreira, Carlos; Silva, Augusto; Teixeira, António (The Eurographics Association, 2021)
      With the main purpose of studying the articulatory configuration of the European Portuguese (EP) sounds and to evaluate coarticulatory effects, a large 3D MRI database from several speakers and contexts have been acquired. ...

    • Left-Ventricle Global and Regional Functional Analysis from MDCT Images 

      Silva, Samuel; Santos, Beatriz Sousa; Madeira, Joaquim (The Eurographics Association, 2021)
      Left-ventricle functional analysis is of paramount importance for the assessment of coronary artery disease. Non-invasive coronary artery imaging using multiple-detector computed tomography (MDCT) provides a wealth of data ...

    • Linear-Time Dynamics of Characters with Stiff Joints 

      Hernández, Fernando; Garre, Carlos; Casillas, Rubén; Otaduy, Miguel A. (The Eurographics Association, 2021)
      Characters, like other articulated objects and structures, are typically simulated using articulated dynamics algorithms. There are efficient linear-time algorithms for the simulation of open-chain articulated bodies, but ...

    • Mobile Computational Photography: Exposure Fusion on the Nokia N900 

      Echevarria, Jose I.; Gutierrez, Diego (The Eurographics Association, 2021)
      This paper explores the Nokia N900 platform as a versatile playground for mobile computational photography. We present the implementation of a simple yet practical application to acquire high quality tone mapped HDR images, ...

    • A Moving Least Squares Method for Implant Model Deformation in Computer Aided Orthopedic Surgery for Fractures of Lower Extremities 

      Ramírez, Esmitt; Coto, Ernesto (The Eurographics Association, 2021)
      Preoperative planning is an essential step before performing any surgical procedure. Computer Aided Orthopedic Surgery (CAOS) systems are extensively used for the planning of surgeries for fractures of lower extremities. ...

    • Neural Data Exploration with Force Feedback 

      Raya, Laura; Otaduy, Miguel A.; García, Marcos (The Eurographics Association, 2021)
      The behavior of the brain depends to a large extend on its neural structure. Therefore, understanding this neural topology is a high-priority research line for neurobiologists. Due to complexity of the brain's neural ...

    • Non-Uniform Spherical Light Fields 

      Blasco, J.; Abad, F.; Camahort, E.; Vivó, R. (The Eurographics Association, 2021)
      The study of the light field, as a function defining the radiance along the different viewing directions of a scene, started more than a decade ago and is still ongoing due to its interesting applications. Among the different ...

    • Parallel Collision Detection Oriented to Distributed Memory Architectures for High-Resolution Meshes 

      Novalbos, Marcos; Sánchez, Alberto (The Eurographics Association, 2021)
      Higher resolution meshes should be used in graphics applications to make them as realistic as they can. However, they imply a high computational. Several approaches have been built to solve collision detection, although ...

    • Procedural Modeling of Suspension Bridges 

      Patow, Gustavo (The Eurographics Association, 2021)
      In this paper we introduce a method for designing a class of engineering structures, namely suspension bridges. These bridges are ubiquitous in the industrialized countries, often appearing in known city landscapes, yet ...

    • Procedural Modelling of Destructible Materials 

      Gestel, J. van; Bidarra, R. (The Eurographics Association, 2021)
      Traditional content creation for computer games is a costly process. In particular, current techniques for authoring destructible behaviour are often limited to a single object basis. In this paper, we build on previous ...

    • Proceedings Info 

      Silva, F.; Gutierrez, D.; Rodríguez, J.; Figueiredo, M. (Eurographics Association, 2021-06-15)