Using vanishing points for camera calibration
International Journal of Computer Vision
Three-dimensional computer vision: a geometric viewpoint
Three-dimensional computer vision: a geometric viewpoint
Determining the Epipolar Geometry and its Uncertainty: A Review
International Journal of Computer Vision
Learning Patterns of Activity Using Real-Time Tracking
IEEE Transactions on Pattern Analysis and Machine Intelligence
International Journal of Computer Vision
Multiple view geometry in computer vision
Multiple view geometry in computer vision
Digital Image Warping
Distortion Invariant Object Recognition in the Dynamic Link Architecture
IEEE Transactions on Computers
ECCV '02 Proceedings of the 7th European Conference on Computer Vision-Part IV
Introduction to Stochastic Search and Optimization
Introduction to Stochastic Search and Optimization
Self-Calibration of a Camera from Video of a Walking Human
ICPR '02 Proceedings of the 16 th International Conference on Pattern Recognition (ICPR'02) Volume 1 - Volume 1
ICPR '00 Proceedings of the International Conference on Pattern Recognition - Volume 1
Uncalibrated Two-View Metrology
ICPR '04 Proceedings of the Pattern Recognition, 17th International Conference on (ICPR'04) Volume 1 - Volume 01
Generalized principal component analysis (gpca): an algebraic geometric approach to subspace clustering and motion segmentation
Journal of Cognitive Neuroscience
An iterative image registration technique with an application to stereo vision
IJCAI'81 Proceedings of the 7th international joint conference on Artificial intelligence - Volume 2
Appearance modeling using a geometric transform
IEEE Transactions on Image Processing
Generalized principal component analysis (GPCA)
CVPR'03 Proceedings of the 2003 IEEE computer society conference on Computer vision and pattern recognition
Video mensuration using a stationary camera
ECCV'06 Proceedings of the 9th European conference on Computer Vision - Volume Part III
Visual tracking and recognition using appearance-adaptive models in particle filters
IEEE Transactions on Image Processing
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This paper presents an approach for video metrology. From videos acquired by an uncalibrated stationary camera, we first recover the vanishing line and the vertical point of the scene based upon tracking moving objects that primarily lie on a ground plane. Using geometric properties of moving objects, a probabilistic model is constructed for simultaneously grouping trajectories and estimating vanishing points. Then we apply a single view mensuration algorithm to each of the frames to obtain height measurements. We finally fuse the multiframe measurements using the least median of squares (LMedS) as a robust cost function and the Robbins-Monro stochastic approximation (RMSA) technique. This method enables less human supervision, more flexibility and improved robustness. From the uncertainty analysis, we conclude that the method with auto-calibration is robust in practice. Results are shown based upon realistic tracking data from a variety of scenes.