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ICIP
2010
IEEE
13 years 8 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
ICCSA
2007
Springer
14 years 4 months ago
Weak Visibility of Two Objects in Planar Polygonal Scenes
Abstract. Determining whether two segments s and t in a planar polygonal scene weakly see each other is a classical problem in computational geometry. In this problem we seek for a...
Mostafa Nouri, Alireza Zarei, Mohammad Ghodsi
CVPR
2011
IEEE
13 years 2 months ago
Symmetric Piecewise Planar Object Reconstruction from a Single Image
Recovering 3D geometry from a single view of an object is an important and challenging problem in computer vision. Previous methods mainly focus on one specific class of objects ...
Tianfan XUE, Jianzhuang LIU
ICRA
2006
IEEE
104views Robotics» more  ICRA 2006»
14 years 4 months ago
Graphical Singularity Analysis of Planar Parallel Manipulators
- This paper introduces a new approach to identify singularities of planar parallel manipulators (PPMs). This method is based on Maxwell’s reciprocal figure theory which establis...
Amir Degani, Alon Wolf
WG
2007
Springer
14 years 4 months ago
Mixing 3-Colourings in Bipartite Graphs
For a 3-colourable graph G, the 3-colour graph of G, denoted C3(G), is the graph with node set the proper vertex 3-colourings of G, and two nodes adjacent whenever the correspondi...
Luis Cereceda, Jan van den Heuvel, Matthew Johnson