检索结果-内蒙古大学图书馆

International Conference on pattern recognition

作者： U. Garain B.B. Chaudhuri R.P. Ghosh Computer Vision & Pattern Recognition Unit Indian Statistical Institute Kolkata India Student Department of Computer Science & Engineering MCKV Institute of Engineering Howrah West Bengal India

This paper deals with recognition of printed mathematical symbols. A group of classifiers arranged hierarchically is used to achieve robust recognition of the large number of symbols appearing in expressions. The classifier used at the top level employs stroke-based classification technique to recognize some of the frequently occurring symbols. The second level uses three classifiers to recognize the rest of the expression symbols. Different combination techniques have been attempted to integrate the second level classifiers to achieve high recognition accuracy. Experiment shows that the proposed approach is quite robust for recognition of a large number of symbols appearing in various expressions.

关键词： pattern recognition Robustness Feature extraction Shape computer vision computer science Handwriting recognition Testing Character recognition Typesetting

来源：评论

学校读者我要写书评

暂无评论

Detection of QRS complex of ECG signals from square-derivative curve

Modelling, Measurement and Control C

引用

Modelling, Measurement and Control C 2004年第1-2期65卷 15-27页

作者： Mitra, S. Mitra, M. Computer Vision and Pattern Recognition Unit Indian Statistical Institute Kolkata 700108 India Department of Applied Physics University College of Science and Tech. University of Calcutta Kolkata 700009 India

An approach to QRS complex detection based on the selection of maximum area zone of square derivative curve is presented in this paper. At first the ECG signals are being extracted from paper ECG records by an automated data acquisition system which has been developed by using image processing techniques. Then the QRS complex of each ECG signal is detected even in the presence of power line interference and baseline drift to calculate the sampling period for further analysis in frequency plane for disease identification. A very high accuracy level (∼ 99.4%) has been achieved in detection of QRS complex by this method.

关键词： computer vision

来源：评论

学校读者我要写书评

暂无评论

Robust occupancy detection from stereo images

Robust occupancy detection from stereo images

引用

International Conference on Intelligent Transportation

作者： B. Alefs M. Clabian H. Bischof W. Kropatsch F. Khairallah Advanced Computer Vision GmbH-ACV Vienna Austria Advanced Computer Vision GmbH-ACV Austria Institute for Computer Graphics and Vision Graz University of Technology Graz Austria Pattern Recognition and Image Processing Group Institute of Computer Aided Automation Computer Science Department University of Technology Vienna Vienna Austria TRW Automotive GmbH Farmington Hills MI USA

Vehicle occupants that are out-of-position can be deadly injured by the deployment of the air bag in a crash situation. In recent years many different sensors and systems have been proposed to detect the type of occupant and the position of the occupant's head. This work presents a method for classification and occupant's head detection based on passive stereo vision. The proposed system uses depth surface analysis and scene statistics together with support vector machines for classification and selection of head candidates. Evaluation of the method shows 99% correct for classification and 98% correct for head detection, using large sets of image data, and image sequences recorded in a driving vehicle.

关键词： Robustness Magnetic heads Vehicle crash testing Sensor systems Stereo vision Layout Statistical analysis Support vector machines Support vector machine classification Vehicle detection

来源：评论

学校读者我要写书评

暂无评论

A feasibility study of on-board data compression for infrared cameras of space observatories

A feasibility study of on-board data compression for infrare...

引用

International Conference on pattern recognition

作者： C. Reimers A.N. Belbachir H. Bischof R. Ottensamer D.A. Cesarsky H. Feuchtgruber F. Kerschbaum A. Poglitsch Institute of Astronomy University of Technology Vienna Vienna Austria Pattern Recognition and Image Procesing Group University of Technology Vienna Vienna Austria Institute of Computer Graphics and Vision Technical University of Graz Graz Austria Max-Planck Institute of Extraterrestrial Physics Garching Germany

In this paper, the feasibility of on-board data reduction/compression concept described in is evaluated for infrared images taken from space observatories. The method described in, which was initially designed and developed for the PACS (photodetector array camera and spectrometer) instrument, makes use of on-board integration to achieve higher compression ratio (CR) for applications with a modest telemetry rate. The evaluation of the reduction concept takes into account the visual performance (distortion) and the compression ratio. The distortion is assessed by calculating the reconstruction error using 4 metrics, namely, root mean square error (RMSE), signal-to-noise-ratio (SNR), peak-signal-to-noise-ratio (PSNR) and potential information loss (PIL). A quantitative evaluation of the on-board compression concept is performed on data from the infrared camera ISOCAM (infrared space observatory camera). We conclude with a short summary.

关键词： Data compression Cameras Observatories Image coding Infrared imaging Picture archiving and communication systems Photodetectors Spectroscopy Instruments Chromium

来源：评论

学校读者我要写书评

暂无评论

Preface

引用

Lecture Notes in computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2004年 3316卷 V-VI页

作者： Pal, Nikhil R. Kasabov, Nikola Mudi, Rajani K. Pal, Srimanta Parui, Swapan K. Indian Statistical Institute Electronics and Communications Sciences Unit 203 B. T. Road Calcutta India Private Bag 92006 Auckland New Zealand Jadavpur University Department of Instrumentation and Electronics Engineering Salt-lake Campus Calcutta India Indian Statistical Institute Computer Vision and Pattern Recognition Unit 203 B. T. Road Calcutta India

来源：评论

学校读者我要写书评

暂无评论

On machine understanding of online handwritten mathematical expressions 7

On machine understanding of online handwritten mathematical ...

引用

7th International Conference on Document Analysis and recognition, ICDAR 2003

作者： Garain, Utpal Chaudhuri, B.B. Computer Vision and Pattern Recognition Unit Indian Statistical Institute 203 B. T. Road Kolkata India

ISBN: (纸本)0769519601

This paper aims at automatic recognition of online handwritten mathematical expressions written on an electronic tablet. The proposed technique involves two major stages: symbol recognition and structural analysis. A multiple-classifier consists of both parametric and nonparametric classifier has been used for recognition of symbols. Parametric classifier is based on Hidden Markov Model (HMM), whereas, non-parametric classifier uses Nearest Neighbor classification scheme. Structural analysis uses several online and offline features to identify the spatial relationships among symbols. A context free grammar has been designed to convert input expressions into their corresponding Latex strings. Contextual information has been used to correct several errors occurring at both recognition and structural analysis stage. A new method for evaluating performance of the proposed systems has been formulated. Experiments on a dataset of considerable size show high efficiency of the proposed system. © 2003 IEEE.

关键词： Structural analysis

来源：评论

学校读者我要写书评

暂无评论

Multi-script line identification from Indian documents

Multi-script line identification from Indian documents

引用

International Conference on Document Analysis and recognition

作者： U. Pal S. Sinha B.B. Chaudhuri Indian Statistical Institute Computer Vision and Pattern Recognition Unit Kolkata India

ISBN: (纸本)0769519601

A document page may contain two or more different scripts. For Optical Character recognition (OCR) of such a document page, it is necessary to separate different scripts before feeding them to their individual OCR system. In this paper an automatic scheme is presented to identify text lines of different Indian scripts from a document. For the separation task at first the scripts are grouped into a few classes according to script characteristics. Next feature based on water reservoir principle, contour tracing, profile etc. are employed to identify them without any expensive OCR-like algorithms. At present, the system has an overall accuracy of about 97.52%.

关键词： Natural languages Optical character recognition software computer vision pattern recognition Character recognition Water resources Reservoirs Constitution Writing Gabor filters

来源：评论

学校读者我要写书评

暂无评论

recognition of printed Urdu script

Recognition of printed Urdu script

引用

International Conference on Document Analysis and recognition

作者： U. Pal A. Sarkar Computer Vision and Pattern Recognition Unit Indian Statistical Institute Kolkata India

ISBN: (纸本)0769519601

This paper deals with an Optical Character recognition system for printed Urdu, a popular Indian script. The development of OCR for this script is difficult because (i) a large number of characters have to be recognized (ii) there are many similar shaped characters. In the proposed system individual characters are recognized using a combination of topological, contour and water reservoir concept based features. The feature detection methods are simple and robust. A prototype of the system has been tested on printed Urdu characters and currently achieves 97.8% character level accuracy on average.

关键词： Reservoirs Water resources Optical character recognition software Character recognition Shape computer vision Image segmentation Water storage pattern recognition Robustness

来源：评论

学校读者我要写书评

暂无评论

Segmentation of Bangla unconstrained handwritten text

Segmentation of Bangla unconstrained handwritten text

引用

International Conference on Document Analysis and recognition

作者： U. Pal S. Datta Computer Vision and Pattern Recognition Unit Indian Statistical Institute Kolkata India

ISBN: (纸本)0769519601

To take care of variability involved in the writing style of different individuals in this paper we propose a robust scheme to segment unconstrained handwritten Bangla texts into lines, words and characters. For line segmentation, at first, we divide the text into vertical stripes. Stripe width of a document is computed by statistical analysis of the text height in the document. Next we determine horizontal histogram of these stripes and the relationship of the minimal values of the histograms is used to segment text lines. Based on vertical projection profile lines are segmented into words. Segmentation of characters from handwritten word is very tricky as the characters are seldom vertically separable. We use a concept based on water reservoir principle for the purpose. Here we, at first, identify isolated and connected (touching) characters in a word. Next touching characters of the word are segmented based on the reservoir base area points and structural feature of the component.

关键词： Histograms Reservoirs Writing Robustness Statistical analysis Water resources computer vision pattern recognition Character recognition Handwriting recognition

来源：评论

学校读者我要写书评

暂无评论

3-D human motion estimation using regularization with 2-D feature point tracking

3-D human motion estimation using regularization with 2-D fe...

引用

International Conference on Machine Learning and Cybernetics (ICMLC)

作者： Ya-Ming Wang Li Cao Wen-Qing Huang Research Center for Computer Vision and Pattern Recognition Zhejiang Institute of Science and Technology Hangzhou Zhejiang China

ISBN: (纸本)0780378652

A novel approach is proposed to 3-D human motion estimation using regularization. First, a method of feature point tracking is developed based on /spl alpha/-/spl beta/ filter and genetic algorithm. The outliers and occluded points can be solved by this method. Then, in order to deal with the ill-posed estimation problem, a regularization approach is proposed, which is based on the results of 2-D feature point tracking and the motion smoothness between consecutive estimation groups. Thus, the ill-posed problem is converted to a well-posed one. Experimental results also demonstrate the feasibility of the proposed approach.

关键词： Humans Motion estimation Tracking Filters Genetic algorithms computer vision Image sequences Biological system modeling Equations pattern recognition

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：