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6th international conference on Image and Signal Processing, ICISP 2014

ISBN: (纸本)9783319079974

the proceedings contain 76 papers. the topics discussed include: daylight colored optimal spectra for improved color discrimination;evaluating visibility of age spot and freckle based on simulated spectral reflectance of skin;multiple color matches to estimate human color vision sensitivities;building a two-way hyperspectral imaging system with liquid crystal tunable filters;measurement and modeling of bidirectional characteristics of fluorescent objects;multispectral endoscopy to identify precancerous lesions in gastric mucosa;multichannel spectral image enhancement for visualizing diabetic retinopathy lesions;fundamental study on intraoperative quantification of gastrointestinal viability by transmission light intensity analysis;and improved spectral density measurement from estimated reflectance data with kernel ridge regression.

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Discrete Geometry for Computer Imagery - 16th iapr international conference, DGCI 2011, Proceedings

Discrete Geometry for Computer Imagery - 16th IAPR Internati...

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16th iapr international conference on Discrete Geometry for Computer Imagery, DGCI 2011

ISBN: (纸本)9783642198663

the proceedings contain 43 papers. the topics discussed include: a probabilistic grouping principle to go from pixels to visual structures;an arithmetic and combinatorial approach to three-dimensional discrete lines;smooth 2D coordinate systems on discrete surfaces;an improved Riemannian metric approximation for graph cuts;associating cell complexes to four dimensional digital objects;hierarchic Euclidean skeletons in cubical complexes;a unified topological framework for digital imaging;isthmus-based 6-directional parallel thinning algorithms;quasi-linear transformations, numeration systems and fractals;path-based distance with varying weights and neighborhood sequences;sparse object representations by digital distance functions;efficient robust digital hyperplane fitting with bounded error;circular arc reconstruction of digital contours with chosen Hausdorff error;and an error bounded tangent estimator for digitized elliptic curves.

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6th Mexican conference onpattern recognition, MCPR 2014

6th Mexican Conference onPattern Recognition, MCPR 2014

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6th Mexican conference on pattern recognition, MCPR 2014

ISBN: (纸本)9783319074900

the proceedings contain 39 papers. the special focus in this conference is on pattern recognition and Artificial Intelligence. the topics include: Weighted maximum variance dimensionality reduction;improved performance of computer networks by embedded pattern detection;a family of two-dimensional benchmark data sets and its application to comparing different cluster validation indices;multilayer neural network with multi-valued neurons in time series forecasting of oil production;developing architectures of spiking neural networks by using grammatical evolution based on evolutionary strategy;problem solving environment based on knowledge based system principles;positive and negative local trend association patterns in analysis of associations between time series;an effective permutant selection heuristic for proximity searching in metric spaces;contextualized hand gesture recognition with smartphones;a feasibility study on the use of binary keypoint descriptors for 3D face recognition;an approach for multi-pose face detection exploring invariance by training;assembling similar tracking approaches in order to strengthen performance;real-time classification of lying bodies by hog descriptors;wavelet filter adjusting for image lossless compression using pattern recognition;a new retinal recognition system using a logarithmic spiral sampling grid;a semi-supervised puzzle-based method for separating the venous and arterial vascular networks in retinal images;thermal image processing for breast symmetry detection oriented to automatic breast cancer analysis;relevance feedback in biometric retrieval of animal photographs and applying mathematical morphology for the classification of Iberian ceramics from the upper valley of guadalquivir river.

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Face Liveness Detection Using 3D Structure Recovered from a Single Camera

Face Liveness Detection Using 3D Structure Recovered from a ...

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6th iapr international conference on Biometrics (ICB)

作者： Wang, Tao Yang, Jianwei Lei, Zhen Liao, Shengcai Li, Stan Z. Chinese Acad Sci Ctr Biometr & Secur Res Beijing 100864 Peoples R China Chinese Acad Sci Natl Lab Pattern Recognit Inst Automat Beijing 100864 Peoples R China

ISBN: (纸本)9781479903108

Face recognition, which is security-critical, has been widely deployed in our daily life. However, traditional face recognition technologies in practice can be spoofed easily, for example, by using a simple printed photo. In this paper, we propose a novel face liveness detection approach to counter spoofing attacks by recovering sparse 3D facial structure. Given a face video or several images captured from more than two viewpoints, we detect facial landmarks and select key frames. then, the sparse 3D facial structure can be recovered from the selected key frames. Finally, an Support Vector Machine (SVM) classifier is trained to distinguish the genuine and fake faces. Compared with the previous works, the proposed method has the following advantages. First, it gives perfect liveness detection results, which meets the security requirement of face biometric systems. Second, it is independent on cameras or systems, which works well on different devices. Experiments with genuine faces versus planar photo faces and warped photo faces demonstrate the superiority of the proposed method over the state-of-the-art liveness detection methods.

关键词： Face recognition

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Face Liveness Detection with Component Dependent Descriptor

Face Liveness Detection with Component Dependent Descriptor

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6th iapr international conference on Biometrics (ICB)

作者： Yang, Jianwei Lei, Zhen Liao, Shengcai Li, Stan Z. Chinese Acad Sci Ctr Biometr & Secur Res Beijing 100864 Peoples R China Chinese Acad Sci Natl Lab Pattern Recognit Inst Automat Beijing 100864 Peoples R China

ISBN: (纸本)9781479903108

Spoofing attacks mainly include printing artifacts, electronic screens and ultra-realistic face masks or models. In this paper, we propose a component-based face coding approach for liveness detection. the proposed method consists of four steps: (1) locating the components of face;(2) coding the low-level features respectively for all the components;(3) deriving the high-level face representation by pooling the codes with weights derived from Fisher criterion;(4) concatenating the histograms from all components into a classifier for identification. the proposed framework makes good use of micro differences between genuine faces and fake faces. Meanwhile, the inherent appearance differences among different components are retained. Extensive experiments on three published standard databases demonstrate that the method can achieve the best liveness detection performance in three databases.

关键词： Face recognition

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Introducing an experimental framework in C# for fingerprint recognition

Introducing an experimental framework in C# for fingerprint ...

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6th Mexican conference on pattern recognition, MCPR 2014

作者： Medina-Pérez, Miguel Angel Loyola-González, Octavio Gutierrez-Rodríguez, Andres Eduardo García-Borroto, Milton Altamirano-Robles, Leopoldo Instituto Nacional de Astrofísica Óptica Y Electrónica Luis Enrique Erro No. 1 Sta. María Tonanzintla Puebla C.P. 72840 Mexico Centro de Bioplantas Universidad de Ciego de Ávila Carretera a Morón km 9 Ciego de Ávila Cuba Instituto Superior Politécnico José A. Echeverría C. 114 No. 11901 e/ Ciclovia y Rotonda Apdo. 6028 Marianao Habana Cuba

ISBN: (纸本)9783319074900

In this paper, a framework for fingerprint recognition is introduced. the framework contains several algorithms for fingerprint matching and feature extraction, as well as the evaluation protocol for several fingerprint verification competitions. All the algorithms are implemented in C# providing the source code which researchers can review, reuse or modify. In order to show the framework relevance, an experimental comparison among different matching algorithms is presented. © 2014 Springer international Publishing.

关键词： pattern matching

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6th international Workshop on Computational Color Imaging, CCIW 2017

6th International Workshop on Computational Color Imaging, C...

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6th international Workshop on Computational Color Imaging, CCIW 2017

ISBN: (纸本)9783319560090

the proceedings contain 23 papers. the special focus in this conference is on Computational Color Imaging. the topics include: Computational print control;video smoke removal based on smoke imaging model and space-time pixel compensation;similarities and differences in the mathematical formalizations of the retinex model and its variants;a Milano retinex implementation based on intensity thresholding;a multidistortion database for image quality;a complexity-based image analysis to investigate interference between distortions and image contents in image quality assessment;visualization of subsurface features in oil paintings using high-resolution visible and near infrared scanned images;a simple scanner for high resolution imaging of wall paintings;visualizing lost designs in degraded early modern tapestry using infra red image;a novel scanning technique for imaging of gold and silver foils used in art works;a transmission type scanning system for ultra high resolution scanning;a database of spectral filter array images that combine visible and NIR;analytical survey of highlight detection in color and spectral images;characterization by hyperspectral imaging and hypercolor gamut estimation for structural color prints;fast-calibration reflectance-transmittance model to compute multiview recto-verso prints;image contrast measure as a gloss material descriptor;artistic photo filtering recognition using CNNs and improved opponent colour local binary patterns for colour texture classification.

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Consensus-based prediction of RNA and DNA binding residues from protein sequences 6th

Consensus-based prediction of RNA and DNA binding residues f...

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6th international conference on pattern recognition and Machine Intelligence, PReMI 2015

作者： Yan, Jing Kurgan, Lukasz Electrical and Computer Engineering University of Alberta EdmontonT6G 2V4 Canada

Computational prediction of RNA- and DNA-binding residues from protein sequences offers a high-throughput and accurate solution to functionally annotate the avalanche of the protein sequence data. Although many predictors exist, the efforts to improve predictive performance with the use of consensus methods are so far limited. We explore and empirically compare a comprehensive set of different designs of consensuses including simple approaches that combine binary predictions and more sophisticated machine learning models. We consider both DNA- and RNA-binding motivated by similarities in these interactions, which should lead to similar conclusions. We observe that the simple consensuses do not provide improved predictive performance when applied to sequences that share low similarity with the datasets used to build their input predictors. However, use of machine learning models, such as linear regression, Support Vector Machine and Naïve Bayes, results in improved predictive performance when compared with the best individual predictors for the prediction of DNA- and RNA-binding residues. © Springer international Publishing Switzerland 2015.

关键词： Forecasting

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Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in bioinformatics): Preface

Lecture Notes in Computer Science (including subseries Lectu...

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Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in bioinformatics) 2012年 7632 LNBI卷 V页

作者： Shibuya, Tetsuo Kashima, Hisashi Sese, Jun Ahmad, Shandar University of Tokyo Institute of Medical Science 4-6-1 Shirokanedai Minato-ku 108-8639 Tokyo Japan University of Tokyo Department of Mathematical Informatics 7-3-1 Hongo Bunkyo-ku 113-8654 Tokyo Japan Tokyo Institute of Technology Department of Computer Science 2-12-1 Ookayamama Meguro-ku 152-8550 Tokyo Japan National Institute of Biomedical Innovation 7-6-8 Saito-Asagi Suita 567-0085 Osaka Japan

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6th international Workshop on Document Analysis Systems, DAS 2004

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6th iapr international Workshop on Document Analysis Systems, DAS 2004

ISBN: (纸本)3540230602

the proceedings contain 53 papers. the special focus in this conference is on Digital Libraries, Historical Documents, Layout Analysis and Color Documents. the topics include: Document analysis systems for digital libraries;the trinity college Dublin 1872 online catalogue;a semantic-based system for querying personal digital libraries;adventures in attempting to reconstruct don Quixote;a segmentation-free recognition technique to assist old Greek handwritten manuscript OCR;automatic metadata retrieval from ancient manuscripts;a complete approach to the conversion of typewritten historical documents for digital archives;an adaptive binarization technique for low quality historical documents;segmentation of handwritten characters for digitalizing Korean historical documents;self-organizing maps and ancient documents;word grouping in document images based on voronoi tessellation;multi-component document image coding using regions-of-interest;physical layout analysis of complex structured Arabic documents using artificial neural nets;an integrated approach for automatic semantic structure extraction in document images;multi-view HAC for semi-supervised document image classification;configurable text stamp identification tool with application of fuzzy logic;layout and content extraction for PDF documents;automatic extraction of filled-in items from bank-check images;bleed-through removal from degraded documents using a color decorrelation method;colour map classification for archive documents;adaptive region growing color segmentation for text using irregular pyramid;preprocessing and segmentation of bad quality machine typed documents;information retrieval system for handwritten documents and multiscale handwriting characterization for writers’ classification.

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