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ECCV
2006
Springer
13 years 11 months ago
Robust Homography Estimation from Planar Contours Based on Convexity
Abstract. We propose a homography estimation method from the contours of planar regions. Standard projective invariants such as cross ratios or canonical frames based on hot points...
Alberto Ruiz, Pedro E. López-de-Teruel, Lor...
CVPR
2007
IEEE
14 years 9 months ago
Shape Statistics for Image Segmentation with Prior
We propose a new approach to compute non-linear, intrinsic shape statistics and to incorporate them into a shape prior for an image segmentation task. Given a sample set of contou...
Guillaume Charpiat, Olivier D. Faugeras, Renaud Ke...
CDC
2008
IEEE
124views Control Systems» more  CDC 2008»
14 years 1 months ago
A passive 2DOF walker: Finding gait cycles using virtual holonomic constraints
— A planar compass-like biped on a shallow slope is the simplest model of a passive walker. It is a two-degrees-offreedom impulsive mechanical system known to possess periodic so...
Leonid B. Freidovich, Uwe Mettin, Anton S. Shiriae...
ICCSA
2003
Springer
14 years 17 days ago
Exact Solutions of the Generalized Equal Width Wave Equation
Abstract. The equal width wave (EW) equation is a model partial differential equation for the simulation of one-dimensional wave propagation in nonlinear media with dispersion proc...
Samir Hamdi, Wayne H. Enright, William E. Schiesse...
FSE
2008
Springer
115views Cryptology» more  FSE 2008»
13 years 9 months ago
On the Salsa20 Core Function
In this paper, we point out some weaknesses in the Salsa20 core function that could be exploited to obtain up to 231 collisions for its full (20 rounds) version. We first find an i...
Julio César Hernández Castro, Juan M...