Browsing by Author "Sbert Cassasayas, Mateu"
Now showing items 1-14 of 14
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A Global algorithm for linear radiosity
Sbert Cassasayas, Mateu; Pueyo Sánchez, Xavier (1993-11)
External research report
Open AccessA linear algorithm for radiosity is presented, linear both in time and storage. The new algorithm is based on previous work by the authors and on the well known algorithms for progressive radiosity and Monte Carlo particle ... -
An Integral geometry based method for fast form-factor computation
Sbert Cassasayas, Mateu (1993-01)
External research report
Open AccessMonte Carlo techniques have been widely used in rendering algorithms for local integration. For example, to compute the contribution of a patch to the luminance of another. In the present paper we propose ... -
Applications of information theory to computer graphics
Sbert Cassasayas, Mateu; Feixas, Miquel; Rigau, Jaume; Castro, Francesc; Vázquez Alcocer, Pere Pau (2002)
Conference report
Restricted access - publisher's policyWe present in this talk several applications of Information Theory concepts to Computer Graphics. Mutual information will be applied to Radiosity to obtain the better scene discretization. The concept of entropy will be ... -
Automatic indoor scene exploration
Vázquez Alcocer, Pere Pau; Sbert Cassasayas, Mateu (2003)
Conference report
Restricted access - publisher's policyAutomatic computation of best views of objects are very useful. For example, they can be used as the starting point of a scene exploration, or to enrich galleries of objects available through Internet by adding an image a ... -
Automatic keyframe selection for high-quality image-based walkthrough animation using viewpoint entropy
Vázquez Alcocer, Pere Pau; Sbert Cassasayas, Mateu (2002-02)
Article
Open AccessThe computation of high quality animation sequences is expensive. Generation time for each frame can take a few hours Recently, Image-Based Rendering methods have been proposed to solve this problem. As these techniques ... -
Automatic view selection using viewpoint entropy and its application to image-based modelling
Vázquez Alcocer, Pere Pau; Feixas, Miquel; Sbert Cassasayas, Mateu; Heidrich, Wolfgang (North Holland, 2003)
Article
Restricted access - publisher's policyIn the last decade a new family of methods, namely Image-Based Rendering, has appeared. These techniques rely on the use of precomputed images to totally or partially substitute the geometric representation of the scene. ... -
Bandwidth reduction for remote navigation systems through view prediction and progressive transmission
Vázquez Alcocer, Pere Pau; Sbert Cassasayas, Mateu (Elsevier Science Direct, 2004)
Article
Restricted access - publisher's policyRemote navigation systems, such as exploration of virtual 3D worlds or remote surgery, usually require higher bandwidth than the Internet connection commonly available at home. In this paper,we explore a set of techniques ... -
Bandwidth reduction techniques for remote navigation systems
Vázquez Alcocer, Pere Pau; Sbert Cassasayas, Mateu (2002)
Conference report
Restricted access - publisher's policyIn this paper we explore a set of techniques to reduce the bandwidth in remote navigation systems. These systems, such as exploration of virtual 3D worlds or remote surgery, usually require higher bandwidth than the common ... -
Fast adaptive selection of best views
Vázquez Alcocer, Pere Pau; Sbert Cassasayas, Mateu (2003)
Conference report
Restricted access - publisher's policyAutomatic computation of best views of objects is very useful. For example, they can be used as the starting point of a scene exploration, or to enrich galleries of objects available through Internet by adding an image a ... -
Image-based modeling using viewpoint entropy
Vázquez Alcocer, Pere Pau; Feixas, Miquel; Sbert Cassasayas, Mateu; Heidrich, Wolfgang (2002)
Conference report
Open AccessWe present a new method to automatically determine the correct camera placement positions in order to obtain a minimal set of views for Image-Based Rendering. The viewpoints should cover all visible polygons with an adequate ... -
On the fly best view detection using graphics hardware
Vázquez Alcocer, Pere Pau; Sbert Cassasayas, Mateu (2004)
Conference report
Restricted access - publisher's policySelection of good camera positions has many applications in Computer Graphics. It can be used to compute a walkthrough inside a scene that shows a higher amount of information or to select a minimal set of views for ... -
Perception-based illumination information measurement and light source placement
Vázquez Alcocer, Pere Pau; Sbert Cassasayas, Mateu (2003)
Conference report
Restricted access - publisher's policyThe automatic selection of good viewing parameters is very complex. In most cases, the notion of good strongly depends on the concrete application. Moreover, when an intuitive definition of good view is available, it is ... -
Point-based modeling from a single image
Vázquez Alcocer, Pere Pau; Marco Gómez, Jordi; Sbert Cassasayas, Mateu (2004)
Conference report
Restricted access - publisher's policyThe complexity of virtual environments has grown spectacularly over the recent years, mainly thanks to the use of the currently cheap high performance graphics cards. As the graphics cards improve the performance and the ... -
Viewpoint selection using viewpoint entropy
Vázquez Alcocer, Pere Pau; Feixas, Miquel; Sbert Cassasayas, Mateu; Heidrich, Wolfgang (2001)
Conference report
Restricted access - publisher's policyComputation of good viewpoints is important in several fields: computational geometry, visual servoing, robot motion, graph drawing, etc. In addition, selection of good views is rapidly becoming a key issue in computer ...