Rapid octree construction from image sequences
CVGIP: Image Understanding
A Flexible New Technique for Camera Calibration
IEEE Transactions on Pattern Analysis and Machine Intelligence
Recent approaches to global optimization problems through Particle Swarm Optimization
Natural Computing: an international journal
The Visual Hull Concept for Silhouette-Based Image Understanding
IEEE Transactions on Pattern Analysis and Machine Intelligence
Human Body Model Acquisition and Tracking Using Voxel Data
International Journal of Computer Vision
Polyhedral Visual Hulls for Real-Time Rendering
Proceedings of the 12th Eurographics Workshop on Rendering Techniques
Combining 2D Feature Tracking and Volume Reconstruction for Online Video-Based Human Motion Capture
PG '02 Proceedings of the 10th Pacific Conference on Computer Graphics and Applications
Free-viewpoint video of human actors
ACM SIGGRAPH 2003 Papers
Model-Based Multiple View Reconstruction of People
ICCV '03 Proceedings of the Ninth IEEE International Conference on Computer Vision - Volume 2
Full Body Tracking from Multiple Views Using Stochastic Sampling
CVPR '05 Proceedings of the 2005 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR'05) - Volume 2 - Volume 02
Tracking of the Articulated Upper Body on Multi-View Stereo Image Sequences
CVPR '06 Proceedings of the 2006 IEEE Computer Society Conference on Computer Vision and Pattern Recognition - Volume 1
Markerless tracking of complex human motions from multiple views
Computer Vision and Image Understanding - Special issue on modeling people: Vision-based understanding of a person's shape, appearance, movement, and behaviour
Surface Capture for Performance-Based Animation
IEEE Computer Graphics and Applications
Performance capture from sparse multi-view video
ACM SIGGRAPH 2008 papers
Human body pose estimation with particle swarm optimisation
Evolutionary Computation
CVPR'03 Proceedings of the 2003 IEEE computer society conference on Computer vision and pattern recognition
Tracking with the kinematics of extremal contours
ACCV'06 Proceedings of the 7th Asian conference on Computer Vision - Volume Part I
The particle swarm - explosion, stability, and convergence in amultidimensional complex space
IEEE Transactions on Evolutionary Computation
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We present a multi-camera system for recovering skeleton body pose, by performing real-time volume reconstruction and using a hierarchical stochastic pose search algorithm. Different from many multicamera systems that require a few connected workstations, our system only uses a signle PC to control 8 cameras for synchronous image acquisition. Silhouettes of the 8 cameras are extracted via a color-based background subtraction algorithm, and set as input to the 3D volume reconstruction. Our system can perform real-time volume reconstruction rendered in point clouds, voxels as well as voxels with texturing. The full-body skeleton pose (29-D vector) is then recovered by fitting an articulated body model to the volume sequences. The pose estimation is performed in a hierarchical manner, by using a particle swarm optmization (PSO) based search strategy combined with soft constraints. 3D distance transform (DT) is used for reducing the computing time of objective evaluations.