Sciweavers

PAMI
2006
171views more  PAMI 2006»
13 years 4 months ago
Camera Calibration from Video of a Walking Human
A self-calibration method to estimate a camera's intrinsic and extrinsic parameters from vertical line segments of the same height is presented. An algorithm to obtain the nee...
Fengjun Lv, Tao Zhao, Ramakant Nevatia
COMGEO
2008
ACM
13 years 4 months ago
On the density of iterated line segment intersections
Given S1, a finite set of points in the plane, we define a sequence of point sets Si as follows: With Si already determined, let Li be the set of all the line segments connecting ...
Ansgar Grüne, Sanaz Kamali
MVA
1990
145views Computer Vision» more  MVA 1990»
13 years 5 months ago
Finding Line Segments by Surface Fitting to the Hough Transform
We describe a method based on the Hough transform to compute a set of parameters that completely describe line segments. By complete, we mean the description includes the endpoint...
Wayne Niblack, Tai Truong
CCCG
1993
13 years 5 months ago
Folding Rulers inside Triangles
An l-ruler is a chain of n links, each of length l. The links, which are allowed to cross, are modeled by line segments whose endpoints act as joints. A given configuration of an ...
Marc J. van Kreveld, Jack Snoeyink, Sue Whitesides
BMVC
1998
13 years 5 months ago
ORASSYLL: Object Recognition with Autonomously Learned and Sparse Symbolic Representations Based on Local Line Detectors
We introduce an object recognition system in which objects are represented as a sparse and spatially organized set of local (bent) line segments. The line segments correspond to b...
Norbert Krüger, Niklas Lüdtke
SODA
2003
ACM
131views Algorithms» more  SODA 2003»
13 years 5 months ago
Zonotopes as bounding volumes
Zonotopes are centrally symmetric polytopes with a very special structure: they are the Minkowski sum of line segments. In this paper we propose to use zonotopes as bounding volum...
Leonidas J. Guibas, An Nguyen, Li Zhang
DICTA
2003
13 years 5 months ago
Two-Level Image Segmentation Based on Region and Edge Integration
Abstract. This paper introduces a two-level approach for image segmentation based on region and edge integration. Edges are first detected in the original image using a combinatio...
Qing Wu, Yizhou Yu
CCCG
2003
13 years 5 months ago
Transversals to line segments in R3
We completely describe the structure of the connected components of transversals to a collection of n arbitrary line segments in R3 . We show that n 3 line segments in R3 admit 0,...
Hervé Brönnimann, Hazel Everett, Sylva...
CCCG
2007
13 years 6 months ago
Capturing Crossings: Convex Hulls of Segment and Plane Intersections
We give a simple O(n log n) algorithm to compute the convex hull of the (possibly Θ(n2 )) intersection points in an arrangement of n line segments in the plane. We also show an a...
Esther M. Arkin, Joseph S. B. Mitchell, Jack Snoey...
COMPGEOM
1991
ACM
13 years 8 months ago
Crossing Families
Given a set of points in the plane, a crossing family is a collection of line segments, each joining two of the points, such that any two line segments intersect internally. Two s...
Boris Aronov, Paul Erdös, Wayne Goddard, Dani...