Augmenting Aerial Earth Maps with Dynamic Information Abstract We introduce methods for augmenting aerial visualizations of Earth (from tools such as Google Earth or Microsoft Virtual Earth) with dynamic information obtained from videos. Our goal is to make Augmented Earth Maps that visualize the live broadcast of dynamic sceneries within a city. We propose different […]
Nipun Kwatra, Chris Wojtan, Mark Carlson, Irfan A. Essa, Peter J. Mucha, Greg Turk (2009), “Fluid Simulation with Articulated Bodies“, IEEE Transactions on Visualization and Computer Graphics, 10 Jun. 2009. IEEE computer Society Digital Library. IEEE Computer Society. [DOI | PDF (see copyright) | Video | Website] Abstract We present an algorithm for creating realistic […]
Matthew Flagg, Atsushi Nakazawa, Qiushuang Zhang, Sing Bing Kang, Young Kee Ryu, Irfan Essa, James M. Rehg (2009), Human Video Textures In Proceedings of the ACM Symposium on Interactive 3D Graphics and Games 2009 (I3D ’09), Boston, MA, February 27-March 1 (Fri-Sun), 2009 [PDF (see Copyright) | Video in DiVx | Website ] Abstract This paper describes a data-driven approach […]
We define a Spine as a branching axial structure representing the shape and topology of a 3D objects limbs, and capturing the limbs correspondence and motion over time. … In general, our approach combines the objectives of generalized cylinders, 3D scanning, and markerless motion capture to generate baseline models from real puppets, animals, and human subjects.
Citation A. Schödl and I. Essa (2002), “Controlled Animation of Video Sprites,” in ACM/Eurographics Symposium on Computer Animation (SCA), San Antonio, TX, USA, 2002. [PDF] [WEBSITE] [VIDEO] [DOI] [BIBTEX] @InProceedings{ 2002-Schodl-CAVS, address = {San Antonio, TX, USA}, author = {A. Sch{\”o}dl and I. Essa}, booktitle = {{ACM/Eurographics Symposium on Computer Animation (SCA)}}, doi = {10.1145/545261.545281}, […]
Citation G. J. Brostow and I. Essa (2001), “Image-Based Motion Blur for Stop Motion Animation,” in ACM SIGGRAPH Proceedings of Annual Conference on Computer graphics and interactive techniques, 2001, p. 561–566. [WEBSITE] [VIDEO] [DOI] [BIBTEX] @InProceedings{ 2001-Brostow-IMBSMA, author = {G. J. Brostow and I. Essa}, booktitle = {{ACM SIGGRAPH Proceedings of Annual Conference on Computer […]
Irfan Essa (1994), “Analysis, interpretation and synthesis of facial expressions“, PhD Thesis, MIT, Cambridge, MA, USA. (Advisor: Alex (Sandy) Pentland) [PDF] Abstract This thesis describes a computer vision system for observing the “action units” of a face using video sequences as input. The visual observation (sensing) is achieved by using an optimal estimation optical flow […]
Publication Abstract Detection of contact and calculation of collision forces is an important problem in any kind of physical multi-body simulation. For computer graphics and physically-based animation, it is especially important to devise methods that combine efficient computational methods with powerful existing graphics tools if one is to obtain a realistic, real-time virtual world. Most of the physical simulations are computationally […]
Paper Abstract We describe a real-time solid modeling system that is based on the physical analogy of forming clay by applying forces. The system is implemented by simulating real materials as they react to user-supplied forces. Unlike other physically-based modeling approaches, the Thingworld system allows the user to restrict forming action to simple global deformations […]