Sciweavers

1730 search results - page 49 / 346
» Shimura Curve Computations
Sort
View
90
Voted
FOCS
2006
IEEE
15 years 6 months ago
Better lossless condensers through derandomized curve samplers
Lossless condensers are unbalanced expander graphs, with expansion close to optimal. Equivalently, they may be viewed as functions that use a short random seed to map a source on ...
Amnon Ta-Shma, Christopher Umans
PG
2002
IEEE
15 years 5 months ago
Approximation with Active B-Spline Curves and Surfaces
An active contour model for parametric curve and surface approximation is presented. The active curve or surface adapts to the model shape to be approximated in an optimization al...
Helmut Pottmann, Stefan Leopoldseder, Michael Hofe...
94
Voted
HAPTICS
2008
IEEE
15 years 7 months ago
Haptic Perception of Real and Virtual Curvature
Abstract. In this study we compared human discrimination performance for real and virtual curved shapes. To simulate a curved shape we used a device that could independently orient...
Maarten W. A. Wijntjes, Akihiro Sato, Astrid M. L....
CVPR
2005
IEEE
1158views Computer Vision» more  CVPR 2005»
16 years 2 months ago
Flattening Curved Documents in Images
Compared to scanned images, document pictures captured by camera can suffer from distortions due to perspective and page warping. It is necessary to restore a frontal planar view ...
Jian Liang, Daniel DeMenthon, David S. Doermann
93
Voted
ICIP
1995
IEEE
16 years 2 months ago
Constrained monotone regression of ROC curves and histograms using splines and polynomials
Receiver operating characteristics (ROC) curves have the property that they start at (0,l) and end at (1,O) and are monotonically decreasing. Furthermore, a parametric representat...
Tapas Kanungo, D. M. Gay, Robert M. Haralick