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ICIP
2010
IEEE
13 years 3 months ago
Detecting photo manipulation on signs and billboards
The manipulation of text on a sign or billboard is relatively easy to do in a way that is perceptually convincing. When text is on a planar surface and imaged under perspective pr...
Valentina Conotter, Giulia Boato, Hany Farid
VISUALIZATION
1996
IEEE
13 years 9 months ago
Fast Perspective Volume Rendering with Splatting by Utilizing a Ray-Driven Approach
Volume ray casting is based on sampling the data along sight rays. In this technique, reconstruction is achieved by a convolution, which collects the contribution of multiple voxe...
Klaus Mueller, Roni Yagel

Publication
353views
14 years 3 months ago
Shape from Shading with Perspective Projection
Most conventional SFS (shape from shading) algorithms have been developed under the assumption of orthographic projection. However, the assumption is not valid when an object is no...
Kyoung Mu Lee (Seoul National University), C.-C. J...
ICPR
2004
IEEE
14 years 6 months ago
Towards Shape from Shading under Realistic Photographic Conditions
This paper describes a new modeling of the shape from shading problem taking perspective projection into account, and proposes a method of resolution for the new equation. An appl...
Alain Crouzil, Frédéric Courteille, ...
ECCV
2006
Springer
14 years 7 months ago
Perspective n-View Multibody Structure-and-Motion Through Model Selection
Multi-body structure-and-motion (MSaM) is the problem to establish the multiple-view geometry of an image sequence of a 3D scene, where the scene consists of multiple rigid objects...
Konrad Schindler, James U, Hanzi Wang
ICCV
2001
IEEE
14 years 7 months ago
On Projection Matrices and their Applications in Computer Vision
Projection matrices from projective spaces ? to ? have long been used in multiple-view geometry to model the perspective projection created by the pin-hole camera. In this work we...
Lior Wolf, Amnon Shashua
ICCV
2003
IEEE
14 years 7 months ago
"Perspective Shape from Shading" and Viscosity Solutions
This article proposes a solution of the Lambertian shape from shading (SFS) problem in the case of a pinhole camera model (performing a perspective projection). Our approach is ba...
Emmanuel Prados, Olivier D. Faugeras
CVPR
2004
IEEE
14 years 7 months ago
Perspective Shape-from-Shading by Fast Marching
Shape-from-Shading (SfS) is a fundamental problem in Computer Vision. At its basis lies the image irradiance equation. Recently, the authors proposed to base the image irradiance ...
Ariel Tankus, Nir A. Sochen, Yehezkel Yeshurun