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K-CENTROIDS-BASED SUPERVISED CLASSIFICATION OF TEXTURE IMAGES: HANDLING THE INTRA-CLASS DIVERSITY

K-CENTROIDS-BASED SUPERVISED CLASSIFICATION OF TEXTURE IMAGE...

引用

IEEE International Conference on Acoustics, Speech and Signal Processing

作者： Aurelien Schutz Lionel Bombrun Yannick Berthoumieu Universite de Bordeaux ENSEIRB-Matmeca Laboratoire IMS Groupe Signal et Image

ISBN: (纸本)9781479903573

Natural texture images exhibit a high intra-class diversity due to different acquisition conditions (scene enlightenment, perspective angle,...). To handle with the diversity, a new supervised classification algorithm based on a parametric formalism is introduced: the K-centroids-based classifier (K-CB). A comparative study between various supervised classification algorithms on the VisTex and Brodatz image databases is conducted and reveals that the proposed K-CB classifier obtains relatively good classification accuracy with a low computational complexity.

关键词： sorting algorithm GRAIN PATTERN Taxonomy images complexity classes Classifiers textures visual databases modern history

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MR based PET attenuation correction (MRAC) and anatomical localization of human brain using an optimized UTE-mDixon pulse sequence

MR based PET attenuation correction (MRAC) and anatomical lo...

引用

IEEE Nuclear Science Symposium

作者： Lingzhi Hu Christian Stehning Nghi Nguyen Andrew Sher Claudia Martinez Rios Zhiqiang Hu Lingxiong Shao Philips Healthcare Cleveland OH 44124 USA

ISBN: (纸本)9781479960989

MR based Attenuation Correction (MRAC) is essential for PET quantitation and image quality assurance in PET/MR. Ultra-short TE (UTE) sequence is promising in generating positive contrast for cortical bone but its further adoption is limited by prohibitively long scan time, lack of soft tissue contrast, and potential ambiguity in a tissue classification due to MR imaging artifacts. In this investigation, we aimed to develop a new MRAC method that consists an optimized under-sampled UTE-mDixon sequence and an iterative voxel-based tissue classification algorithm to generate 4-compartment μ-map, including water, fat, bone and air cavity. In vivo UTE-mDixon images were acquired on 12 human subjects and the developed segmentation method was employed for tissue classification. Diagnostic quality of MR images and the tissue classification accuracy for MRAC was evaluated by three radiologists independently. As a unique advantage over other MRAC sequences, the under-sampled UTE-mDixon of whole brain with retrospective trajectory delay calibration can be finished within less than 3 minutes providing both high quality water/fat separation images for anatomical localization and UTE images for bone segmentation. Robust tissue classification was achieved in all subjects as evaluated by radiologists. The developed MR scan methodology together with tissue classification algorithm may provide a one-scan solution for attenuation correction and anatomical localization in PET/MR.

关键词： model reference adaptive control human subject air cavity Image quality sorting algorithm

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OBJECT CLASSIFICATION IN INFRARED IMAGES USING DEEP REPRESENTATIONS

OBJECT CLASSIFICATION IN INFRARED IMAGES USING DEEP REPRESEN...

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IEEE International Conference on Image Processing

作者： Erhan Gundogdu Aykut Koc A. Aydin Alatan Intelligent Data Analytics Research Program Dept. Aselsan Research Center Center for Image Analysis (OGAM) METU Ankara

ISBN: (纸本)9781467399623

In this study, we address the problem of infrared (IR) object classification that divides the object appearance space hierarchically with a binary decision tree structure. Binary decisions are made by using the special features of the object appearances. These features are extracted using a fully connected deep neural network learnt by training samples. At each node of the tree, we train individual deep CNNs such that each node specializes in its corresponding subspace. The proposed classification algorithm is evaluated in our generated dataset, which consists of IR targets collected from different video records obtained from different IR sensors (both midwave and longwave) and taken from real world field. The generated dataset consists of four different class labels as ship/boat, tank, plane and helicopter containing a total of 16K samples. Using the proposed tree-based classifier, we observe a favourable performance increase in our dataset against a single deep CNN classifier.

关键词： Infrared Classification Thermal targets Thermal dataset generation Tree-based classification Taxonomy Infrared radiation sorting algorithm Dataset Binary Decision Tree tree sort Infrared sensors Video Recording Helicopters representations Line of nodes Classifiers binary decision

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A Survey of Face Recognition Techniques and Comparative Study of Various Bi-Modal and Multi-Modal Techniques

A Survey of Face Recognition Techniques and Comparative Stud...

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IEEE International Conference on Industrial and Information Systems

作者： Anand Handa Rashi Agarwal Narendra Kohli Department of CSE PSIT COE Kanpur (India) Department of IT UIET CSJMU Kanpur (India) Department of CSE HBTIU Kanpur (India)

Face Recognition is one of the most demanding problems in computer vision and image processing. Face recognition techniques can be divided into following categories: methods which are applicable on intensified images;images derived from video sequences;and images that require three-dimensional information and data. In this paper, we have compared the various Bi-Modal and Multi-Modal techniques. Speech recognition is an essential component for various applications such as building interfaces for natural human machines. Acoustic speech is used as the only input for various speech based automatic recognition system. Multimodal recognition is as an indigenous component of the next level speech-based systems. The main objective of this review paper is to compare the various components of bimodal recognition and it aims at some important ongoing research issues in the field of image and face recognition.

关键词： Hidden Markov models Speech recognition Face recognition Speech Face Classification algorithms Feature extraction Facial Recognition Face recognition techniques sorting algorithm Speech recognition images Hidden Markov models Speech Feature extraction Face computer vision

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The Process of Metadata Management for Radar Target Classification algorithm Development

The Process of Metadata Management for Radar Target Classifi...

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New Trends in Signal Processing (NTSP)

作者： Vojtech Valenta Jan Pidanic Ondrej Nemec University of Pardubice Pardubice Czech Republic

ISBN: (数字)9781728161556

ISBN: (纸本)9781728161563

This paper presents an approach to manage metadata (target class labels) for the recorded primary Doppler radar data. This information is necessary for further research and development of target classification algorithms. For this purpose, a labelling methodology and an application radar data analysis and target labelling was developed. The application includes radar records file processing, Doppler filtering, tag creation, data visualizationand tag database. For the better context of analysed data, an interface to Geographic Information Software (GIS) program is included as well. GIS program allows overlaying radar Plan Position Indicator (PPI) data with map data, airplane transponder tracks, drone flight path log and other support data. Finally, the application notes and observations are presented.

关键词： primary radar target classification radar recordings target type labelling radar data analysis TARGET CLASSIFICATION Metadata sorting algorithm RADAR TARGETS radar radar data Packaging

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Bangla Handwritten Character Recognition: an overview of the state of the art classification algorithm with new dataset

Bangla Handwritten Character Recognition: an overview of the...

引用

International Conference on Advances in Science, Engineering and Robotics Technology

作者： Md Nazmul Hoq Nadira Anjum Nipa Sadat Shahriar Mohammad Mohaiminul Islam Department of Computer Science and Engineering Daffodil International University

ISBN: (纸本)9781728134468

Recognition of handwritten characters from Bangla handwritten texts is of immense importance considering the complexity of the task. Researchers have explored the task of recognizing Bangla handwritten digits, but a few numbers of published works are available for Bangla Handwritten Character Recognition (BHCR). In our paper, we present a comparative overview of classification algorithms for BHCR, which may help the researcher to decide an appropriate classification algorithm for their work We have created a new dataset of Bangla handwritten characters from 150 volunteers at different levels. We extracted around 2500 samples of Bangla characters, which consist of Bangla Vowels only. Histogram adjustment and other image preprocessing techniques are applied in handwritten characters before their classification. We compare the performance of seven commonly used classification algorithms for BHCR in terms of Sensitivity, Miss Rate, Specificity, Precision, Fall-out, F-score, and Overall Accuracy. This result shows that among the seven algorithms, ANN (Artificial Neural Network) performed best. LR (Logistic Regression) performed well compared to others in terms of the standard measures like sensitivity, specificity and error rate. This comparative overview will help scientists, especially the new researchers to give a quick start with Bangla handwritten character recognition.

关键词： Handwritten character recognition Pattern recognition Histogram of oriented gradient (HOG) handwritten character recognition sorting algorithm Pattern recognition HANDWRITTEN CHARACTERS Sensitivity and Specificity quick-start

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COMPETITIVE AND ONLINE PIECEWISE LINEAR CLASSIFICATION 38th

COMPETITIVE AND ONLINE PIECEWISE LINEAR CLASSIFICATION

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IEEE International Conference on Acoustics, Speech, and Signal Processing

作者： Huseyin Ozkan Mehmet A. Donmez Ozgun S. Pelvan Arda Akman Suleyman S. Kozat Bilkent University Electrical and Electronics Engineering Department Koc University Electrical and Electronics Engineering Department Turk Telekom Group R&D

ISBN: (纸本)9781479903573

In this paper, we study the binary classification problem in machine learning and introduce a novel classification algorithm based on the "Context Tree Weighting Method". The introduced algorithm incrementally learns a classification model through sequential updates in the course of a given data stream, i.e., each data point is processed only once and forgotten after the classifier is updated, and asymptotically achieves the performance of the best piecewise linear classifiers defined by the "context tree". Since the computational complexity is only linear in the depth of the context tree, our algorithm is highly scalable and appropriate for real time processing. We present experimental results on several benchmark data sets and demonstrate that our method provides significant computational improvement both in the test (5 ～ 35×) and training phases (40 ～ 1000×), while achieving high classification accuracy in comparison to the SVM with RBF kernel.

关键词： Online Competitive Classification Piecewise linear Context tree LDA Classifiers Taxonomy Anterior interventricular branch of left coronary artery real-time process laser Doppler anemometry Left-sided displacement of abomasum Dataset sorting algorithm Support Vector Network

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CENTROID-BASED TEXTURE CLASSIFICATION USING THE GENERALIZED GAMMA DISTRIBUTION

CENTROID-BASED TEXTURE CLASSIFICATION USING THE GENERALIZED ...

引用

European Signal Processing Conference

作者： Aurelien Schutz Lionel Bombrun Yannick Berthoumieu Mohamed Najim Université de Bordeaux ENSEIRB-Matmeca Laboratoire IMS Groupe Signal et Image

ISBN: (纸本)9781479936878

This paper introduces a centroid-based (CB) supervised classification algorithm of textured images. In the context of scale/orientation decomposition, we demonstrate the possibility to develop centroid approach based on a stochastic modeling. The aim of this paper is twofold. Firstly, we introduce the generalized Gamma distribution (GΓD) for the modeling of wavelet coefficients. A comparative goodness-of-fit study with various univariate models reveals the potential of the proposed model. Secondly, we propose an algorithm to estimate the centroid from the collection of GΓD parameters. To speed-up the convergence of the steepest descent, we propose to include the Fisher information matrix in the optimization step. Experiments from various conventional texture databases are conducted and demonstrate the interest of the proposed classification algorithm.

关键词： textured images Jeffrey divergence generalized Gamma distribution centroid supervised classification Centroid Gamma Distribution sorting algorithm textures

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Optimization methods of GIDS packet classification using dynamic traffic characteristic

Optimization methods of GIDS packet classification using dyn...

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International Conference on Information Science and Digital Content Technology

作者： Ning Zhuo Sun zhi-xin Xu Jian-zhen The school of Internet of Things Nanjing University of Posts and Telecommunications China

ISBN: (纸本)9781467312882

Traditional packet classification algorithms in Giga bit Intrusion Detection System (GIDS) always focus on static characteristic of the signature and ignore the traffic characteristic totally. In this paper we argue that efficiency of the classification algorithm is up to how current traffic visits the tree, the more well-proportioned the classification tree could partition the traffic, the more efficient it would be. So optimization methods using dynamic traffic characteristics are exploited. Our contributions lie in three folds. Firstly, a novel best classification tree is formally defined aiming to minimize the visit cost of the traffic in the slot, based on which optimization methods are exploited. Secondly, Packet Feature Entropy is proposed to measure how efficiently a packet field can partition the traffic, and the popular 14 packet fields used in Snort are investigated in detail by 10Gbps backbone trace and Netflow data. Finally, adaptive updating strategies are discussed by analyzing the experiment results.

关键词： Optimization methods Traffic characteristics sort tree structure sorting algorithm packet classification Traffic static characteristics Packet

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A PSO-Based Document Classification algorithm accelerated by the CUDA Platform

A PSO-Based Document Classification Algorithm accelerated by...

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IEEE International Conference on Systems, Man, and Cybernetics

作者： Jan Platos Vaclav Snasel Tomas Jezowicz Pavel Kromer Ajith Abraham Department of Computer Science FEECS IT4 Innovations Centre of Excellence VSB-Technical University of Ostrava

ISBN: (纸本)9781467317139

Document classification is a well-known problem that is focused on assigning predefined labels or categories to the documents found in the searched collection. Many classical algorithms were developed for solving of this problem. They usually have large time complexity and with increasing number of documents it is necessary to find algorithm which are able to find solution in reasonable time. Such algorithms are usually inspired by biological processes. Even such meta-heuristics algorithms become too slow when the number of documents is really large and it is necessary to optimize them for faster processing. This paper describes a document classification algorithm based on Particle Swarm Optimization with implementation of one and two GPUs.

关键词： Particle swarm optimization Document classification Gpu Optimization sorting algorithm complexity classes Particle swarm optimization Necessary Problem solving algorithms Heuristic algorithms

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