Prohlížení Publikační činnost - 13133 dle názvu
Zobrazují se záznamy 75-94 z 110
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P-N Learning: Bootstrapping Binary Classifiers by Structural Constraints
(IEEE, 2010-06)This paper shows that the performance of a binary classifier can be significantly improved by the processing of structured unlabeled data, i.e. data are structured if knowing the label of one example restricts the labeling ... -
Parallel integral projection transform for straight electrode localization in 3-D ultrasound images
(IEEE, 2008-07)In surgical practice, small metallic instruments are frequently used to perform various tasks inside the human body. We address the problem of their accurate localization in the tissue. Recent experiments using medical ... -
Performance Comparison of Extracellular Spike Sorting Algorithms for Single-Channel Recordings
(2012)Proper classification of action potentials from extracellular recordings is essential for making an accurate study of neuronal behavior. Many spike sorting algorithms have been presented in the technical literature. However, ... -
Primal View on Belief Propagation
(AUAI Press, 2010-07)It is known that xed points of loopy belief propagation (BP) correspond to stationary points of the Bethe variational problem, where we minimize the Bethe free energy subject to normalization and marginalization constraints. ... -
Progressive Probabilistic Hough Transform for line detection
(IEEE, 1999)We present a novel Hough Transform algorithm referred to as Progressive Probabilistic Hough Transform (PPHT). Unlike the Probabilistic HT where Standard HT is performed on a pre-selected fraction of input points, PPHT ... -
Radial Radon Transform dedicated to Micro-object Localization from Radio Frequency Ultrasound Signal
(IEEE, 2004-08)In this paper we describe a method for automatic electrode localization in soft tissue from a radiofrequency signal. The method exploits a property of the Radon transform (RT) that allows us to localize a line-segment in ... -
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 ... -
Recognition Using Labelled Objects
(IEEE, 1998-08)General object recognition is a difficult problem. We (1997) proposed a solution for object recognition in an unconstrained environment. We simplified the recognition problem by attaching a special planar pattern on objects ... -
Reconstructing Evolving Tree Structures in Time Lapse Sequences
(2014)We propose an approach to reconstructing tree structures that evolve over time in 2D images and 3D image stacks such as neuronal axons or plant branches. Instead of reconstructing structures in each image independently, ... -
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. ... -
Registration of multiple stained histological sections
(IEEE, 2013)The analysis of protein-level multigene expression signature maps computed from the fusion of differently stained immunohistochemistry images is an emerging tool in cancer management. Creating these maps requires registering ... -
Registration of segmented histological images using thin plate splines and belief propagation
(SPIE, 2014)We register images based on their multiclass segmentations, for cases when correspondence of local features cannot be established. A discrete mutual information is used as a similarity criterion. It is evaluated at a sparse ... -
Revisiting the Decomposition Approach to Inference in Exponential Families and Graphical Models
(Center for Machine Perception, Department of Cybernetics, Faculty of Electrical Engineering, Czech Technical University, 2009-05) -
Revisiting the Linear Programming Relaxation Approach to Gibbs Energy Minimization and Weighted Constraint Satisfaction
(IEEE, 2010)We present a number of contributions to the LP relaxation approach to weighted constraint satisfaction (= Gibbs energy minimization). We link this approach to many works from constraint programming, which relation has so ... -
Robust elastic 2D/3D geometric graph matching
(SPIE, 2012)We present an algorithm for geometric matching of graphs embedded in 2D or 3D space. It is applicable for registering any graph-like structures appearing in biomedical images, such as blood vessels, pulmonary bronchi, nerve ... -
Robust Non-Rigid Registration of 2D and 3D Graphs
(IEEE, 2012)We present a new approach to matching graphs embedded in R2 or R3. Unlike earlier methods, our approach does not rely on the similarity of local appearance features, does not require an initial alignment, can handle partial ... -
Selection of Speaker Independent Feature for a Speaker Verification System
(IEEE, 1998-08)In this paper we propose an optimisation technique to choose a user independent feature subset from the input feature set for a dynamic time-warping (DTW) based text-dependent speaker verification system. The results ... -
Spatio-Temporal Motion Estimation for Respiratory-Correlated Imaging of the Lungs
(American Association of Physicists in Medicine, 2011)Purpose: Four-dimensional computed tomography (4D CT) can provide patient-specific motion information for radiotherapy planning and delivery. Motion estimation in 4D CT is challenging due to the reduced image quality and ... -
Spatio-Temporal Nonrigid Registration for Ultrasound Cardiac Motion Estimation
(IEEE, 2005-09)We propose a new spatio-temporal elastic registration algorithm for motion reconstruction from a series of images. The specific application is to estimate displacement fields from two-dimensional ultrasound sequences of ... -
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 ...