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400
Robust wide baseline stereo from maximally stable extremal regions
 In Proc. BMVC
, 2002
"... The widebaseline stereo problem, i.e. the problem of establishing correspondences between a pair of images taken from different viewpoints is studied. A new set of image elements that are put into correspondence, the so called extremal regions, is introduced. Extremal regions possess highly desir ..."
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Cited by 1016 (35 self)
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subset of extremal regions, the maximally stable extremal regions (MSER). A new robust similarity measure for establishing tentative correspondences is proposed. The robustness ensures that invariants from multiple measurement regions (regions obtained by invariant constructions from extremal regions
Estimating hidden parameters for text localization and recognition
"... Abstract. A new method for text line formation for text localization and recognition is proposed. The method exhaustively enumerates short sequences of character regions in order to infer values of hidden text line parameters (such as text direction) and applies the parameters to efficiently limit ..."
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in order to correctly initialize the search. The method is applied to character regions which are detected as Maximally Stable Extremal Regions (MSERs). The performance of the method is evaluated on the standard ICDAR 2003 dataset, where the method outperforms (precision 0.60, recall 0.60) a previ
ComputerAided Evaluation of Anatomical Accuracy of Image Fusion between XRay CT and SPECT
"... Hybrid scanners, which enable the performance of single photon emission computed tomography (SPECT) and Xray computed tomography (CT) in one imaging session, have considerable diagnostic potential. However, evaluating the anatomical accuracy of image fusion inherent to these systems remains a chal ..."
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challenge. This paper proposes a method for evaluating this variable with minimum user interaction. It focuses on measuring the distance between the centers of gravity of the SPECT hot spot and its counterpart in the CT image. A localized maximally stable extremal regions method is proposed
RealTime Scene Text Localization and Recognition
"... An endtoend realtime scene text localization and recognition method is presented. The realtime performance is achieved by posing the character detection problem as an efficient sequential selection from the set of Extremal Regions (ERs). The ER detector is robust to blur, illumination, color ..."
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An endtoend realtime scene text localization and recognition method is presented. The realtime performance is achieved by posing the character detection problem as an efficient sequential selection from the set of Extremal Regions (ERs). The ER detector is robust to blur, illumination, color
Vector Gaussian TwoTerminal Source Coding
"... Abstract—We derive a lower bound on each supporting line of the rate region of the vector Gaussian twoterminal CEO problem, which is a special case of the indirect vector Gaussian twoterminal source coding problem. The key technical ingredient is a new extremal inequality. It is shown that the lo ..."
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Cited by 2 (2 self)
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Abstract—We derive a lower bound on each supporting line of the rate region of the vector Gaussian twoterminal CEO problem, which is a special case of the indirect vector Gaussian twoterminal source coding problem. The key technical ingredient is a new extremal inequality. It is shown
and
, 2010
"... Let Σ be a bilinear control system on R2 whose matrices generate the Lie algebra sl(2) of the Lie group Sl(2) : the group of order two real matrices with determinant 1. In this work we focus on the extremals of a quadratic cost optimal problem for the angle system PΣ defined by the projection of Σ ..."
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Let Σ be a bilinear control system on R2 whose matrices generate the Lie algebra sl(2) of the Lie group Sl(2) : the group of order two real matrices with determinant 1. In this work we focus on the extremals of a quadratic cost optimal problem for the angle system PΣ defined by the projection of Σ
On holographic entanglement entropy of nonlocal field theories
 Phys.Rev. D89 (2014) 126005, [arXiv:1404.5419]. – 15
"... We study holographic entanglement entropy of nonlocal field theories both at extremality and finite temperature. The gravity duals, constructed in arXiv:1208.3469 [hepth], are characterized by a parameter w. Both the zero temperature backgrounds and the finite temperature counterparts are exact ..."
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Cited by 1 (0 self)
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We study holographic entanglement entropy of nonlocal field theories both at extremality and finite temperature. The gravity duals, constructed in arXiv:1208.3469 [hepth], are characterized by a parameter w. Both the zero temperature backgrounds and the finite temperature counterparts are exact
Optimizing through Coevolutionary Avalanches
"... A b s t r a c t. We explore a new generalpurpose heuristic for finding highquality solutions to hard optimization problems. The method, called extremal optimization, is inspired by "selforganized criticality, " a concept introduced to describe emergent complexity in many physical syste ..."
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A b s t r a c t. We explore a new generalpurpose heuristic for finding highquality solutions to hard optimization problems. The method, called extremal optimization, is inspired by "selforganized criticality, " a concept introduced to describe emergent complexity in many physical
Extremal polygons with minimal perimeter ∗
, 1996
"... In this paper we will investigate an isoperimetric type problem in lattices. If K is a bounded 0symmetric (centrally symmetric with respect to the origin) convex body in En of volume v(K) = 2ndetL which does not contain nonzero lattice points in its interior, we say that K is extremal with respec ..."
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with respect to the given lattice L. There are two variations of the isoperimetric problem for this class of polyhedra. The first one is: Which bodies have minimal surface area in the class of extremal bodies for a fixed ndimensional lattice? And the second one is: Which bodies have minimal surface area
A Machine Learning Approach to Horizon Line Detection Using Local Features
"... Abstract. Planetary rover localization is a challenging problem since no conventional methods such as GPS, structural landmarks etc. are available. Horizon line is a promising visual cue which can be exploited for estimating the rover’s position and orientation during planetary missions. By matchin ..."
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Cited by 5 (2 self)
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using edge images and local features (i.e., SIFT). Given an image, first we apply Canny edge detection using various parameters and keep only those edges which survive over a wide range of thresholds. We refer to these edges as Maximally Stable Extremal Edges (MSEEs). Using ground truth information, we
Results 1  10
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400