Sciweavers

CVPR
2007
IEEE
14 years 6 months ago
Object retrieval with large vocabularies and fast spatial matching
In this paper, we present a large-scale object retrieval system. The user supplies a query object by selecting a region of a query image, and the system returns a ranked list of i...
James Philbin, Ondrej Chum, Michael Isard, Josef S...
CVPR
2007
IEEE
14 years 6 months ago
A Human Action Recognition System for Embedded Computer Vision Application
In this paper, we propose a human action recognition system suitable for embedded computer vision applications in security systems, human-computer interaction and intelligent envi...
Hongying Meng, Nick Pears, Chris Bailey
CVPR
2007
IEEE
14 years 6 months ago
Unsupervised Activity Perception by Hierarchical Bayesian Models
We propose a novel unsupervised learning framework for activity perception. To understand activities in complicated scenes from visual data, we propose a hierarchical Bayesian mod...
Xiaogang Wang, Xiaoxu Ma, Eric Grimson
CVPR
2007
IEEE
14 years 6 months ago
On Constant Focal Length Self-Calibration From Multiple Views
We investigate the problem of finding the metric structure of a general 3D scene viewed by a moving camera with square pixels and constant unknown focal length. While the problem ...
Adrien Bartoli, Alain Crouzil, Benoît Bocqui...
CVPR
2007
IEEE
14 years 6 months ago
Shape from Planar Curves: A Linear Escape from Flatland
We revisit the problem of recovering 3D shape from the projection of planar curves on a surface. This problem is strongly motivated by perception studies. Applications include sin...
Ady Ecker, Kiriakos N. Kutulakos, Allan D. Jepson
CVPR
2007
IEEE
14 years 6 months ago
Shape from Shading Under Various Imaging Conditions
Most of the shape from shading (SFS) algorithms have been developed under the simplifying assumptions of a Lambertian surface, an orthographic projection, and a distant light sour...
Abdelrehim H. Ahmed, Aly A. Farag
CVPR
2007
IEEE
14 years 6 months ago
Monocular and Stereo Methods for AAM Learning from Video
The active appearance model (AAM) is a powerful method for modeling deformable visual objects. One of the major drawbacks of the AAM is that it requires a training set of pseudo-d...
Jason Saragih, Roland Göcke
CVPR
2007
IEEE
14 years 6 months ago
Influence of numerical conditioning on the accuracy of relative orientation
We study the influence of numerical conditioning on the accuracy of two closed-form solutions to the overconstrained relative orientation problem. We consider the well known eight...
Sinisa Segvic, Gerald Schweighofer, Axel Pinz
CVPR
2007
IEEE
14 years 6 months ago
Projector Calibration using Arbitrary Planes and Calibrated Camera
In this paper, an easy calibration method for projector is proposed. The calibration handled in this paper is projective relation between 3D space and 2D pattern, and is not corre...
Makoto Kimura, Masaaki Mochimaru, Takeo Kanade
CVPR
2007
IEEE
14 years 6 months ago
Feasibility Boundary in Dense and Semi-Dense Stereo Matching
In stereo literature, there is no standard method for evaluating algorithms for semi-dense stereo matching. Moreover, existing evaluations for dense methods require a fixed parame...
Jan Cech, Jana Kostlivá, Radim Sára