Results 11  20
of
6,508
Learning the discriminative powerinvariance tradeoff
 IN ICCV
, 2007
"... We investigate the problem of learning optimal descriptors for a given classification task. Many handcrafted descriptors have been proposed in the literature for measuring visual similarity. Looking past initial differences, what really distinguishes one descriptor from another is the tradeoff that ..."
Abstract

Cited by 228 (4 self)
 Add to MetaCart
is posed in the kernel learning framework. We learn the optimal, domainspecific kernel as a combination of base kernels corresponding to base features which achieve different levels of tradeoff (such as no invariance, rotation invariance, scale invariance, affine invariance, etc.) This leads to a convex
Rotation, Entropy, and Equilibrium States
"... . For a dynamical system (X; T ) and function f : X ! R d we consider the corresponding generalised rotation set. We present a new approach to studying the entropy of rotation vectors in terms of equilibrium states. We relate this to the lost and directional ergodic measures and directional entro ..."
Abstract

Cited by 2 (0 self)
 Add to MetaCart
. For a dynamical system (X; T ) and function f : X ! R d we consider the corresponding generalised rotation set. We present a new approach to studying the entropy of rotation vectors in terms of equilibrium states. We relate this to the lost and directional ergodic measures and directional
Selfcalibration from multiple views with a rotating camera
, 1994
"... Abstract. A newpractical method is given for the selfcalibration of a camera. In this method, at least three images are taken from the same point in space with different orientations of the camera and calibration is computed from an analysis of point matches between the images. The method requires ..."
Abstract

Cited by 177 (1 self)
 Add to MetaCart
no knowledge of the orientations of the camera. Calibration is based on the image correspondences only. This method differs fundamentally from previous results by Maybank and Faugeras on selfcalibration using the epipolar structure of image pairs. In the method of this paper, there is no epipolar structure
Matching 3D Models with Shape Distributions
, 2001
"... Measuring the similarity between 3D shapes is a fundamental problem, with applications in computer vision, molecular biology, computer graphics, and a variety of other fields. A challenging aspect of this problem is to find a suitable shape signature that can be constructed and compared quickly, whi ..."
Abstract

Cited by 215 (7 self)
 Add to MetaCart
function measuring global geometric properties of an object. The primary motivation for this approach is to reduce the shape matching problem to the comparison of probability distributions, which is simpler than traditional shape matching methods that require pose registration, feature correspondence
Asrigidaspossible shape interpolation
, 2000
"... We present an objectspace morphing technique that blends the interiors of given two or threedimensional shapes rather than their boundaries. The morph is rigid in the sense that local volumes are leastdistorting as they vary from their source to target configurations. Given a boundary vertex cor ..."
Abstract

Cited by 188 (9 self)
 Add to MetaCart
of the optimal simplex morphing and the appropriate definition of an error functional whose minimization defines the paths of the vertices. Each pair of corresponding simplices defines an affine transformation, which is factored into a rotation and a stretching transformation. These local transformations
Practical parameterization of rotations using the exponential map
 Journal of Graphics Tools
, 1998
"... Parameterizing three degreeoffreedom (DOF) rotations is difficult to do well. Many graphics applications demand that we be able to compute and differentiate positions and orientations of articulated figures with respect to their rotational (and other) parameters, as well as integrate differential ..."
Abstract

Cited by 135 (2 self)
 Add to MetaCart
equations, optimize functions of DOFs, and interpolate orientations. Widely used parameterizations such as Euler angles and quaternions are well suited to only a few of these operations. The exponential map maps a vector in R 3 describing the axis and magnitude of a three DOF rotation to the corresponding
A (2001) Mapping of contralateral space in retinotopic coordinates by a parietal cortical area in humans. Science 294
"... The internal organization of a higher level visual area in the human parietal cortex was mapped. Functional magnetic resonance images were acquired while the polar angle of a peripheral target for a delayed saccade was gradually changed. A region in the superior parietal cortex showed robust retinot ..."
Abstract

Cited by 176 (7 self)
 Add to MetaCart
retinotopic mapping of the remembered target angle. The map reversed when the direction of rotation of the remembered targets was reversed and persisted unchanged when study participants detected rare target reappearances while maintaining fixation, or when the eccentricity of successive remembered targets
Toric Geometry, Sasaki–Einstein Manifolds and a new Infinite Class of AdS/CFT duals
"... Recently an infinite family of explicit Sasaki–Einstein metrics Y p,q on S 2 × S 3 has been discovered, where p and q are two coprime positive integers, with q < p. These give rise to a corresponding family of Calabi–Yau cones, which moreover are toric. Aided by several recent results in toric ge ..."
Abstract

Cited by 173 (15 self)
 Add to MetaCart
geometry, we show that these are Kähler quotients C 4 //U(1), namely the vacua of gauged linear sigma models with charges (p,p, −p + q, −p − q), thereby generalising the conifold, which is p = 1,q = 0. We present the corresponding toric diagrams and show that these may be embedded in the toric diagram
Correspondence to
, 2010
"... Flexible epidemiological model for estimates and shortterm projections in generalised HIV/AIDS epidemics ..."
Abstract
 Add to MetaCart
Flexible epidemiological model for estimates and shortterm projections in generalised HIV/AIDS epidemics
Results 11  20
of
6,508