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» Deriving Intrinsic Images from Image Sequences
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ECCV
1998
Springer
16 years 8 months ago
Shape Representations from Shading Primitives
Diffuse interreflections mean that surface shading and shape are related in ways that are difficult to untangle; in particular, distant and invisible surfaces may affect the shadi...
John A. Haddon, David A. Forsyth
ACCV
2009
Springer
16 years 1 months ago
3D Reconstruction of Human Motion and Skeleton from Uncalibrated Monocular Video
Abstract. This paper introduces a new model-based approach for simultaneously reconstructing 3D human motion and full-body skeletal size from a small set of 2D image features track...
Yen-Lin Chen, Jinxiang Chai
CVPR
2003
IEEE
16 years 8 months ago
Methods and Geometry for Plane-Based Self-Calibration
Abstract. We consider the problem of camera selfcalibration, from images of a planar object with unknown Euclidean structure. The general case of possibly varying focal length is a...
Pierre Gurdjos, Peter Sturm
ICIP
2008
IEEE
16 years 28 days ago
Practical PTZ camera calibration using Givens rotations
Due to their ease of use and availability, pan-tilt-zoom (PTZ) cameras are everywhere. However, in order to utilize these cameras for a meaningful application, it is necessary tha...
Imran N. Junejo, Hassan Foroosh
ICPR
2006
IEEE
16 years 7 months ago
Activity Discovery from Surveillance Videos
Multi-agent interactions often result in mutual occlusion sequences which constitute a visual signature for the event. We define six qualitative occlusion primitives based on the ...
Amitabha Mukerjee, K. S. Venkatesh, Pabitra Mitra,...