Filters








38,781 Hits in 4.1 sec

Visibility Transition Planning for Dynamic Camera Control [chapter]

Thomas Oskam, Robert W. Sumner, Nils Thuerey, Markus Gross
2010 Lecture Notes in Computer Science  
Our global planning strategy on the visibility-aware roadmap enables large-scale camera transitions as well as a local third-person camera module that follows a player and avoids obstructed viewpoints.  ...  We present a real-time camera control system that uses a global planning algorithm to compute large, occlusion free camera paths through complex environments.  ...  Acknowledgments We would like to thank Serkan Bozyigit for his work on dynamic occluders, Michael Spreng for porting the precomputation to C++, and Theodor Mader for his help with the graphics engine.  ... 
doi:10.1007/978-3-642-16958-8_30 fatcat:cuublaziirdxdjzpimavrg4dmy

Visibility transition planning for dynamic camera control

Thomas Oskam, Robert W. Sumner, Nils Thuerey, Markus Gross
2009 Proceedings of the 2009 ACM SIGGRAPH/Eurographics Symposium on Computer Animation - SCA '09  
Our global planning strategy on the visibility-aware roadmap enables large-scale camera transitions as well as a local third-person camera module that follows a player and avoids obstructed viewpoints.  ...  We present a real-time camera control system that uses a global planning algorithm to compute large, occlusion free camera paths through complex environments.  ...  Acknowledgments We would like to thank Serkan Bozyigit for his work on dynamic occluders, Michael Spreng for porting the precomputation to C++, and Theodor Mader for his help with the graphics engine.  ... 
doi:10.1145/1599470.1599478 dblp:conf/sca/OskamSTG09 fatcat:sawj2pmq7nadli2br7h7mhhpxu

On-line control of active camera networks for computer vision tasks

Adrian Ilie, Greg Welch
2011 2011 Fifth ACM/IEEE International Conference on Distributed Smart Cameras  
This has led to the development of automated approaches for on-line camera control.  ...  Large networks of cameras have been increasingly employed to capture dynamic events for tasks such as surveillance and training.  ...  ACKNOWLEDGMENTS We acknowledge our sponsors and collaborators in the "Behavior Analysis and Synthesis for Intelligent Training (BASE-IT)" project: ONR grant N00014-08-C-0349, Roy Stripling, Ph.D., Program  ... 
doi:10.1109/icdsc.2011.6042926 dblp:conf/icdsc/IlieW11 fatcat:323xihmfu5dlbgwckccga2zopy

Online control of active camera networks for computer vision tasks

Adrian Ilie, Greg Welch
2014 ACM transactions on sensor networks  
This has led to the development of automated approaches for on-line camera control.  ...  Large networks of cameras have been increasingly employed to capture dynamic events for tasks such as surveillance and training.  ...  ACKNOWLEDGMENTS We acknowledge our sponsors and collaborators in the "Behavior Analysis and Synthesis for Intelligent Training (BASE-IT)" project: ONR grant N00014-08-C-0349, Roy Stripling, Ph.D., Program  ... 
doi:10.1145/2530283 fatcat:xlilfvwma5gznmfzlxand5mrcq

A Real-time Cinematography System for Interactive 3D Environments [article]

Christophe Lino, Marc Christie, Fabrice Lamarche, Guy Schofield, Patrick Olivier
2010 Proceedings of the 2004 ACM SIGGRAPH/Eurographics symposium on Computer animation - SCA '04  
, transitions, editing, framing) or do not encounter for variations in directorial style.  ...  Such camera control algorithms should be capable of enforcing both low-level geometric constraints, such as the visibility of key subjects, and more elaborate properties related to cinematic conventions  ...  Camera Planning Existing methods for camera motion planning augment classical planning approaches with features such as frame coherency and visibility along the path.  ... 
doi:10.2312/sca/sca10/139-148 fatcat:qugpfvjcyrc4fprj4qsm5ova6q

A Multi-Criteria Approach to Camera Motion Design for Volume Data Animation

Wei-Hsien Hsu, Yubo Zhang, Kwan-Liu Ma
2013 IEEE Transactions on Visualization and Computer Graphics  
Our dynamic multi-criteria solver coupled with a force-directed routing algorithm enables rapid generation of camera paths.  ...  Alternatively, computer graphics and virtual reality camera motion planning is frequently focused on collision free movement in a virtual walkthrough.  ...  Fundamental camera control models and early approaches for interactive and automatic camera control were surveyed by Christie et al. [9] .  ... 
doi:10.1109/tvcg.2013.123 pmid:24051846 fatcat:pxhgtlyk3nbqvol2caggyyaxxq

Automated Camera Selection and Control for Better Training Support [chapter]

Adrian Ilie, Greg Welch
2013 Lecture Notes in Computer Science  
Its main component is ASCENT (Automated Selection and Control for ENhanced Training), an automated camera selection and control approach for operators that also helps provide better training feedback to  ...  This need is being met by two related research efforts: approaches for automated camera selection and control, and computer vision-based approaches for automated extraction of relevant training feedback  ...  We acknowledge our sponsors and collaborators in the "Behavior Analysis and Synthesis for Intelligent Training (BASE-IT)" project: ONR grant N00014-08-C-0349, Roy Stripling, Ph.D., Program Manager, led  ... 
doi:10.1007/978-3-642-39454-6_6 fatcat:kix6txcu65bcpaan5j6jdnnwdi

Maneuver-based autonomous navigation of a small fixed-wing UAV

Myung Hwangbo, Takeo Kanade
2013 2013 IEEE International Conference on Robotics and Automation  
Based on a set of primitive maneuvers integrated with flight controllers, we present a motion planning method that produces dynamically feasible plans in a low dimensional search space.  ...  While fixed-wing UAVs have been well suited for long-endurance missions at a high altitude, their navigation inside an urban area brings more challenges in motion planning and control.  ...  For a target to be sufficiently exposed to a camera, a minimum target observation time was also guaranteed by setting the visibility region as an intermediate goal.  ... 
doi:10.1109/icra.2013.6631135 dblp:conf/icra/HwangboK13 fatcat:v7j6brilbre4nm2mctxfgp2v2q

Level-of-detail for cognitive real-time characters

Christoph Niederberger, Markus Gross
2005 The Visual Computer  
For smaller fractions of visible agents, all visible ones are planning even the nearly visible ones entering the scene and when turning the camera.  ...  This allows for smooth transitions between reactive and proactive behavior.  ... 
doi:10.1007/s00371-005-0279-1 fatcat:ugqmyoh6vngqffpe3o5vc3dw4e

EMS-Vision: a perceptual system for autonomous vehicles

R. Gregor, M. Lutzeler, M. Pellkofer, K.-H. Siedersberger, E.D. Dickmanns
2002 IEEE transactions on intelligent transportation systems (Print)  
EMS-Vision is the third generation dynamic vision system following the 4-D approach. Its core element is a new camera arrangement, mounted on a high bandwidth pan-tilt head for active gaze control.  ...  Central knowledge representation and a hierarchical system architecture allow efficient activation and control of behavioral capabilities for perception and action.  ...  This camera arrangement is mounted on a high dynamic two-axes pan-tilt head (TACC) for active gaze control.  ... 
doi:10.1109/6979.994795 fatcat:ewvltqy7cresjlf3cwjb4f7e5y

A transformation of the Position Based Visual Servoing Problem into a convex optimization problem

Yuquan Wang, Johan Thunberg, Xiaoming Hu
2012 2012 IEEE 51st IEEE Conference on Decision and Control (CDC)  
set of point features are visible for the camera.  ...  The trajectory between the two poses is subject to constraints on the camera motion and the visibility, where we have bounds on the allowed velocities and accelerations of the camera and require that a  ...  In [15] a nonlinear IBVS-based model predictive control is proposed. Visibility constraints, joint limitations and actuator saturations are incorporated by using the dynamic model of the robot.  ... 
doi:10.1109/cdc.2012.6426022 dblp:conf/cdc/WangTH12 fatcat:trqezauaivcc3pitgsfr3pydpu

Directing Cinematographic Drones [article]

Quentin Galvane, Christophe Lino, Marc Christie, Julien Fleureau, Fabien Servant, Francois-Louis Tariolle, Philippe Guillotel
2017 arXiv   pre-print
While professional drone pilots can create aesthetically pleasing videos in short time, the smooth -- and cinematographic -- control of a camera drone remains challenging for most users, despite recent  ...  Quadrotor drones equipped with high quality cameras have rapidely raised as novel, cheap and stable devices for filmmakers.  ...  For external-apex views the control space has a behavior that smoothly transitions between the behavior of the external and apex control spaces.  ... 
arXiv:1712.04216v2 fatcat:xqv4ucxvi5gr7petzqofdjwk3e

A Camera Engine for Computer Games: Managing the Trade-Off Between Constraint Satisfaction and Frame Coherence

Nicolas Halper, Ralf Helbing, Thomas Strothotte
2001 Computer graphics forum (Print)  
This, however, requires new methods for automatic, dynamic camera control. In this paper we present methods and tools for such camera control.  ...  We present a new algorithm for dynamic consideration of the visibility of objects which are deemed to be important in a given game context.  ...  Bode and J. von Heinze from e|media for many discussions on the topic of the paper.  ... 
doi:10.1111/1467-8659.00510 fatcat:xavtuv2jnvfkpdnnpg6l436wmy

Do You See What I See? Coordinating Multiple Aerial Cameras for Robot Cinematography [article]

Arthur Bucker, Rogerio Bonatti, Sebastian Scherer
2021 arXiv   pre-print
In this work we develop a real-time multi-UAV coordination system that is capable of recording dynamic targets while maximizing shot diversity and avoiding collisions and mutual visibility between cameras  ...  We show that our coordination scheme has low computational cost and takes only 1.17 ms on average to plan for a team of 3 UAVs over a 10 s time horizon.  ...  ACKNOWLEDGMENTS We thank CITI-Poli, Grupo Turing and the Skyrats team for the help with robot experiments. RB also gratefully acknowledges the support from the Waibel Education Fund.  ... 
arXiv:2011.05437v2 fatcat:kgxxeez3nnaxpncsz42fae5n2a

Predator-prey vision metaphor for multi-tasking virtual environments

A. Sherstyuk, A. Treskunov, M. Gavrilova
2012 2012 IEEE Symposium on 3D User Interfaces (3DUI)  
We propose a new technique for proactive control of the virtual camera by utilizing a predator-prey vision metaphor. We describe the technique, the implementation, and preliminary results.  ...  Narrow field of view of common Head Mount Displays, coupled with lack of adaptive camera accommodation and vergence make it impossible to view virtual scenes using familiar eye-head-body coordination patterns  ...  The rules for dynamic camera controls, as described, are designed for background execution, without direct user intervention.  ... 
doi:10.1109/3dui.2012.6184188 dblp:conf/3dui/SherstyukTG12 fatcat:5s7sofpnu5b5tbxti3vstwxciu
« Previous Showing results 1 — 15 out of 38,781 results