Interest Point Based Tracking for Markerless Augmented Reality

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Interest Point Based Tracking for Markerless Augmented Reality

Interest Point Based Tracking forMarkerless Augmented RealityFrancisco Paulo Magalhães Simões (fpms@cin.ufpe.br)Veronica Teichrieb (vt@cin.ufpe.br)Virtual Reality and Multimedia Research GroupFederal University of Pernambuco, Computer Science Center7/25/2010


Augmented Reality


Marker X Markerless


3D TrackingSingle CameraMARSfM/SLAMModel BasedReal-timeSfMMonoSLAMTextureBasedEdge BasedLima, J. P. S. M. ; Simoes, F. P. M. ; Figueiredo, L. S. ; Teichrieb, V. ; Kelner, J. . “Onlinemonocular markerless 3D tracking for augmented reality”. In: Minicourses book of XISymposium On Virtual And Augmented Reality, 2009


3D TrackingSingle CameraMARSfM/SLAMModel BasedReal-timeSfMMonoSLAMTextureBasedEdge BasedInterestPointsTemplateMatchingLima, J. P. S. M. ; Simoes, F. P. M. ; Figueiredo, L. S. ; Teichrieb, V. ; Kelner, J. . “Onlinemonocular markerless 3D tracking for augmented reality”. In: Minicourses book of XISymposium On Virtual And Augmented Reality, 2009


Particle Filters• Generate hypotheses (particles)• Evaluate generated particles using likelihood• Get problem solution by combining the bestparticles


Particle Filters


Particle Filters


• Top-down approachIPB + Particle Filters• Generate poses hypotheses using a gaussianpdf applied to previous pose• Evaluate the likelihood as the reprojection errorfor all particles• Composes the poses hypotheses generating thenew pose of the camera


Preliminary Results• Bottom-up Interest Point BasedLima, J. P. S. M. ; Simoes, F. P. M. ; Figueiredo, L. S. ; Teichrieb, V. ; Kelner, J. ; Santos, I. .Model Based 3D Tracking Techniques for Markerless Augmented Reality. In: XISymposium On Virtual And Augmented Reality, 2009.


IPB + Edge Based + Particle Filters• If I have TIME and good results!!!!!• Maybe in PhD research• Scenes of the next chapter...


Augmented Reality– Model Based– SfM/Slam– Projective ARResearch InterestsSIMOES, F. P. M. ; Lima, J. P. S. M. ; TEICHRIEB, V. ; KELNER, J. . Markerless AugmentedReality based on Sampling Edges . In: 5º Workshop on Virtual and Augmented Reality(WRVA2008), 2008.


Research Interests• 3D reconstruction from images– SfM and Real-time SfM


Research Interests• Augmented and Virtual Reality, ComputerVision, Image Processing, Computer Graphics,Algorithms, C/C++ Programming...• C/C++, VXL, OpenCV, OpenGL, Matlab,ARToolkit, OGRE, Qt


Where?GRVM/UFPE:Francisco:www.cin.ufpe.br/~grvmwww.cin.ufpe.br/~fpmsGRVM/UFPESP-ASC

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