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CVPR
2007
IEEE
16 years 8 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
2008
IEEE
16 years 8 months ago
A two-frame theory of motion, lighting and shape
This paper explores how shape, motion, and lighting interact in the case of a two-frame motion sequence. We consider a rigid object with Lambertian reflectance properties undergoi...
Ronen Basri, Darya Frolova
CVPR
2008
IEEE
16 years 8 months ago
Kernel-based learning of cast shadows from a physical model of light sources and surfaces for low-level segmentation
In background subtraction, cast shadows induce silhouette distortions and object fusions hindering performance of high level algorithms in scene monitoring. We introduce a nonpara...
André Zaccarin, Nicolas Martel-Brisson
CVPR
2008
IEEE
16 years 8 months ago
The Logistic Random Field - A convenient graphical model for learning parameters for MRF-based labeling
Graphical models are fundamental tools for modeling images and other applications. In this paper, we propose the Logistic Random Field (LRF) model for representing a discrete-valu...
Marshall F. Tappen, Kegan G. G. Samuel, Craig V. D...
ICCV
2007
IEEE
16 years 8 months ago
Separating Parts from 2D Shapes using Relatability
It's often important to analyze shapes as made up of parts. But there are two ways to think of how parts fit together. We can characterize the remainder of a shape after a pa...
Xiaofeng Mi, Douglas DeCarlo