Procházení Publikační činnost - 13133 dle data publikování
Zobrazují se záznamy 41-60 z 110
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Randomized RANSAC with Sequential Probability Ratio Test
(IEEE, 2005-10)A randomized model verification strategy for RANSAC is presented. The proposed method finds, like RANSAC, a solution that is optimal with user-controllable probability n. A provably optimal model verification strategy is ... -
A Linear Programming Approach to Max-sum Problem: A Review
(Center for Machine Perception, Department of Cybernetics, Faculty of Electrical Engineering, Czech Technical University, 2005-12)The max-sum labeling problem, de ned as maximizing a sum of functions of pairs of discrete variables, is a general optimization problem with numerous applications, e.g., computing MAP assignments of a Markov random eld. ... -
Epipolar Geometry from Two Correspondences
(IEEE, 2006)A novel algorithm for robust RANSAC-like estimation of epipolar geometry (of uncalibrated camera pair) from two correspondences of local affine frames (LAFs) is presented. Each LAF is constructed from three points independently ... -
Multiview 3D Tracking with an Incrementally Constructed 3D Model
(IEEE, 2006-06)We propose a multiview tracking method for rigid objects. Assuming that a part of the object is visible in at least two cameras, a partial 3D model is reconstructed in terms of a collection of small 3D planar patches of ... -
Geometric Hashing with Local Af ne Frames
(IEEE, 2006-06)We propose a novel representation of local image structure and a matching scheme that are insensitive to a wide range of appearance changes. The representation is a collection of local affine frames that are constructed ... -
Comparison of Methods for Tool Localization in Biological Tissue from 3D Ultrasound Data
(IEEE, 2006-10)In medical applications, miniature surgical instruments such as needles, or electrodes are introduced into human body. The position of instrument in tissue can be estimated using 3D ultrasound. In previous publications, ... -
What Is Decreased by the Max-sum Arc Consistency Algorithm?
(ACM, 2007)Inference tasks in Markov random fields (MRFs) are closely related to the constraint satisfaction problem (CSP) and its soft generalizations. In particular, MAP inference in MRF is equivalent to the weighted (maxsum) CSP. ... -
Unified Framework for Semiring-Based Arc Consistency and Relaxation Labeling
(Verlag der Technischen Universität Graz, 2007-02)Constraint Satisfaction Problem (CSP), including its soft modifications, is ubiquitous in artificial intelligence and related fields. In computer vision and pattern recognition, the crisp CSP is more known as the consistent ... -
Wald’s Sequential Analysis for Time-constrained Vision Problems
(IEEE, 2007-04)In detection and matching problems in computer vision, both classification errors and time to decision characterize the quality of an algorithmic solution. We show how to formalize such problems in the framework of sequential ... -
Adaptive Parameter Optimization for Real-time Tracking
(IEEE, 2007-10)Adaptation of a tracking procedure combined in a common way with a Kalman filter is formulated as an constrained optimization problem, where a trade-off between precision and loss-of-lock probability is explicitly taken ... -
Improving Descriptors for Fast Tree Matching by Optimal Linear Projection
(IEEE, 2007-10)In this paper we propose to transform an image descriptor so that nearest neighbor (NN) search for correspondences becomes the optimal matching strategy under the assumption that inter-image deviations of corresponding ... -
Linear Predictors for Fast Simultaneous Modeling and Tracking
(IEEE, 2007-10)An approach for fast tracking of arbitrary image features with no prior model and no offline learning stage is presented. Fast tracking is achieved using banks of linear displacement predictors learnt online. A multi-modal ... -
Stable affine frames on isophotes
(IEEE, 2007-10)We propose a new affine-covariant feature, the stable affine frame (SAF). SAFs lie on the boundary of extremal regions, i.e. on isophotes. Instead of requiring the whole isophote to be stable with respect to intensity ... -
ITAREPS: Information Technology Aided Relapse Prevention Programme in Schizophrenia
(2008)ITAREPS presents a mobile phone-based telemedicine solution for weekly remote patient monitoring and disease management in schizophrenia and psychotic disorders in general. The programme provides health professionals with ... -
2-D Locally Regularized Tissue Strain Estimation From Radio-Frequency Ultrasound Images: Theoretical Developments and Results on Experimental Data
(IEEE, 2008-02)In this paper, a 2-D locally regularized strain estimation method for imaging deformation of soft biological tissues from radio-frequency (RF) ultrasound (US) data is introduced. Contrary to most 2-D techniques that model ... -
Fast no ground truth image registration accuracy evaluation: Comparison of bootstrap and Hessian approaches
(IEEE, 2008-05)Image registration algorithms provide a displacement field between two images. We consider the problem of estimating accuracy of the calculated displacement field from the input images only and without assuming any specific ... -
Multi-resolution parallel integral projection for fast localization of a straight electrode in 3D ultrasound images
(IEEE, 2008-05)We address the problem of fast and accurate localization of miniature surgical instruments like needles or electrodes using 3D ultrasound (US). An algorithm based on maximizing a parallel integral transform (PIP) can ... -
Reducing false positive responses in lung nodule detector system by asymmetric adaboost
(IEEE, 2008-05)We are developing a complex computer aided diagnosis (CAD) system to detect small pulmonary nodules from helical CT scans. Here we present a classifier to reduce the number of false positive responses of the primary detector. ... -
Efficient Sequential Correspondence Selection by Cosegmentation
(IEEE, 2008-06)In many retrieval, object recognition and wide baseline stereo methods, correspondences of interest points are established possibly sublinearly by matching a compact descriptor such as SIFT. We show that a subsequent ...