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Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239)最新文献

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Comparative study of thresholding techniques for gray-level document image binarization 灰度文档图像二值化阈值技术的比较研究
Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239) Pub Date : 2001-08-19 DOI: 10.1109/TENCON.2001.949570
Y. Rangsanseri, S. Rodtook
{"title":"Comparative study of thresholding techniques for gray-level document image binarization","authors":"Y. Rangsanseri, S. Rodtook","doi":"10.1109/TENCON.2001.949570","DOIUrl":"https://doi.org/10.1109/TENCON.2001.949570","url":null,"abstract":"Binarization is difficult for document images with poor contrast or illumination, intensive noise and sources type-related degradation. A new technique based on local thresholding is described in this paper. The idea of our technique is to update locally the threshold value whenever the Laplacian sign of the input image changes along the raster-scan line. The Differential of Gaussian (DoG) is used to define the sign image. This technique is tested with many images including different types of document components and degradations. The results are compared with a number of well-known techniques. It was shown that the proposed technique outperformed all other techniques studied.","PeriodicalId":358168,"journal":{"name":"Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114519186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
A sequential reoptimization approach for the design of signed power-of-two coefficient lattice QMF bank 符号2系数幂格QMF库设计的一种序贯再优化方法
Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239) Pub Date : 2001-08-19 DOI: 10.1109/TENCON.2001.949550
Y. Yu, Y. Lim
{"title":"A sequential reoptimization approach for the design of signed power-of-two coefficient lattice QMF bank","authors":"Y. Yu, Y. Lim","doi":"10.1109/TENCON.2001.949550","DOIUrl":"https://doi.org/10.1109/TENCON.2001.949550","url":null,"abstract":"This paper presents a sequential optimization approach for the design of lattice structure quadrature mirror filter (QMF) banks subject to the sum of signed power-of-two (SPT) coefficient constraints. The lattice structure QMF bank structurally guarantees the perfect reconstruction (PR) property. Nevertheless, its frequency response is still adversely affected by coefficient quantization. In this paper, a frequency response deterioration measure is developed from the lattice coefficient analysis. Based on this frequency response deterioration measure, the coefficient which will cause the largest deterioration in the frequency response of the filter is selected for quantization first. After the coefficient is quantized, the remaining unquantized coefficients are reoptimized. The process of quantizing the coefficient and reoptimizing the remaining unquantized coefficient is repeated until all the coefficients are quantized. The frequency responses of the filters obtained using our algorithm are significantly superior to those obtained by simple rounding of the coefficient values.","PeriodicalId":358168,"journal":{"name":"Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239)","volume":"312 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116598520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The embedded Bluetooth CCD camera 内置蓝牙CCD摄像头
Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239) Pub Date : 2001-08-19 DOI: 10.1109/TENCON.2001.949556
K. Sung-Yuan
{"title":"The embedded Bluetooth CCD camera","authors":"K. Sung-Yuan","doi":"10.1109/TENCON.2001.949556","DOIUrl":"https://doi.org/10.1109/TENCON.2001.949556","url":null,"abstract":"When the bandwidth of the 2G+ and 3G cellular communication increases, video communication will find wide application. One is home security. The video can be used to check the condition of the house appliances, e.g., whether the stove is on or off. The video can also be used to detect an intruder. When someone enters the house, an alarm together with the video is sent to the mobile terminal of the owner by using a motion detection technique. The video is used to verify that the alarm is due to the member of the family or intruder. If it is an intruder then proper action can be taken, eg, to call the police. This can reduce the false alarm rate. For reasons of hiding the camera and ease of installment, the connection between the CCD camera and the computer is preferred to be wireless. Bluetooth technology is a short-range radio link. It is an emerging technology for the home wireless network. This paper describes how to make a embedded CCD camera which will find wide applications in the future.","PeriodicalId":358168,"journal":{"name":"Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129850703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Analysis of 2.45 GHz 4-bit hybrid-coupled phase shifter for phased arrays 相控阵用2.45 GHz 4位混合耦合移相器分析
Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239) Pub Date : 2001-08-19 DOI: 10.1109/TENCON.2001.949651
P. Salonen, P. Jokinen, M. Keskilammi, L. Sydanheimo
{"title":"Analysis of 2.45 GHz 4-bit hybrid-coupled phase shifter for phased arrays","authors":"P. Salonen, P. Jokinen, M. Keskilammi, L. Sydanheimo","doi":"10.1109/TENCON.2001.949651","DOIUrl":"https://doi.org/10.1109/TENCON.2001.949651","url":null,"abstract":"A complete analysis of 4-bit branchline hybrid coupled phase shifter for a phased array antenna operated in a Bluetooth access-point is presented. The analysis is based on the transmission line equivalent model which does not take account the losses of the substrate material. The analysis includes the performance of the cascaded phase shifters with different phase bit combinations. Different values for impedance on the reflective network are allowed for having an additional degree of freedom. Based on the theoretical results a 4-bit hybrid coupled phase shifter is fabricated. The results of theoretical analysis agree well with the results obtained from the measurements.","PeriodicalId":358168,"journal":{"name":"Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129101082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Morphological gesture recognition algorithm 形态手势识别算法
Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239) Pub Date : 2001-08-19 DOI: 10.1109/TENCON.2001.949599
J. Choi, N. Ko, D. Ko
{"title":"Morphological gesture recognition algorithm","authors":"J. Choi, N. Ko, D. Ko","doi":"10.1109/TENCON.2001.949599","DOIUrl":"https://doi.org/10.1109/TENCON.2001.949599","url":null,"abstract":"Previously, new methods have been proposed in field of gesture recognition, however, a most important problem remains. That is the increment of processing time by reason of complexity of the algorithms. Mathematical morphology based on geometrical set theory is the best because real time image processing is possible. This paper presents a posture recognition algorithm using the orientation of primitive elements that are extracted by the morphological shape decomposition algorithm as a new parameter-based method. In the proposed algorithm, 4 postures are devised for navigating the video content editing system. We also propose a fast algorithm for gesture recognition of a human using chain code edge vectors measured from an image sequence. The key idea of the proposed algorithm is to track a trajectory of the center points in primitive elements extracted by morphological shape decomposition. The trajectory of the morphological center points includes information on shape orientation.","PeriodicalId":358168,"journal":{"name":"Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123935401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 15
A design and fabrication of bandpass filter using miniaturized microstrip square SIR 小型化微带方形SIR带通滤波器的设计与制作
Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239) Pub Date : 2001-08-19 DOI: 10.1109/TENCON.2001.949622
Hun Nam, Hyeonjin Lee, Yeongseog Lim
{"title":"A design and fabrication of bandpass filter using miniaturized microstrip square SIR","authors":"Hun Nam, Hyeonjin Lee, Yeongseog Lim","doi":"10.1109/TENCON.2001.949622","DOIUrl":"https://doi.org/10.1109/TENCON.2001.949622","url":null,"abstract":"A four-pole quasi-elliptic function bandpass filter of 1.95 GHz center frequency with 60 MHz bandwidth for IMT-2000 is designed and fabricated using the miniaturized square stepped impedance resonator (SIR). The nonuniform finite difference time domain (NUFDTD) method is used to design the resonator and to calculate the coupling coefficient of three basic structures. The size reduction of miniaturized square SIR resonator is about 50% compared with a square open loop resonator. A bandpass filter using this resonator show good microwave characteristics with harmonic suppression of about -19 dB at 4.76 GHz. The results of measurements are almost similar to those of simulation.","PeriodicalId":358168,"journal":{"name":"Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239)","volume":"317 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124292442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 25
Printed Thai character recognition using fuzzy-rough sets 使用模糊粗糙集的印刷泰语字符识别
Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239) Pub Date : 2001-08-19 DOI: 10.1109/TENCON.2001.949607
W. Kasemsiri, C. Kimpan
{"title":"Printed Thai character recognition using fuzzy-rough sets","authors":"W. Kasemsiri, C. Kimpan","doi":"10.1109/TENCON.2001.949607","DOIUrl":"https://doi.org/10.1109/TENCON.2001.949607","url":null,"abstract":"This paper proposes the method of fuzzy rough sets for the recognition of Thai Characters. We divide the classification process into 2 levels, coarse and fine classification. Both levels of classification have the same processes, applying the rough set lower approximation and then using fuzzy rough sets. The difference between the two levels is in the features of the input data used for classifying. There are 40 coarse groups and some of them need not pass through the second level of classification. We trained this system with 2816 training samples, which were composed of 4 fonts and 4 sizes of characters. The system is tested with an unknown sample, which is composed of 7 fonts and 7 sizes of characters; 4 fonts and 4 sizes of the training sample are inclusive. The accuracy of this proposed system is as high as 89%.","PeriodicalId":358168,"journal":{"name":"Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126548988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
Multiresolution Delaunay triangulation model-based image representation scheme 基于多分辨率Delaunay三角模型的图像表示方案
Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239) Pub Date : 2001-08-19 DOI: 10.1109/TENCON.2001.949580
Lu Zhaoyang, Zhou Xingni, Gao Xiquan, Fan Changxin
{"title":"Multiresolution Delaunay triangulation model-based image representation scheme","authors":"Lu Zhaoyang, Zhou Xingni, Gao Xiquan, Fan Changxin","doi":"10.1109/TENCON.2001.949580","DOIUrl":"https://doi.org/10.1109/TENCON.2001.949580","url":null,"abstract":"This paper presents a Delaunay triangulation (DT) model-based multiresolution image representation of irregular triangles. After \"minimizing the difference\" and \"minimizing the variance\" criteria for image representation are given, splitting and merging methods for DT meshes are then discussed. Comparison of the two criteria is made with the aid of examples. The method demonstrated in the paper can be applied to still image coding, motion compensation for active image sequences and other image processing applications.","PeriodicalId":358168,"journal":{"name":"Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115953793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
A fast and efficient method for document segmentation for OCR 一种快速有效的OCR文档分割方法
Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239) Pub Date : 2001-08-19 DOI: 10.1109/TENCON.2001.949618
B. Kruatrachue, P. Suthaphan
{"title":"A fast and efficient method for document segmentation for OCR","authors":"B. Kruatrachue, P. Suthaphan","doi":"10.1109/TENCON.2001.949618","DOIUrl":"https://doi.org/10.1109/TENCON.2001.949618","url":null,"abstract":"This paper describes fast and efficient method for page segmentation of a document containing a nonrectangular block. The presented method is based on a mixed top-down and bottom-up approach to document analysis. The segmentation is based on a column block (paragraph) extracted by a modified edge following algorithm. Instead of a pixel, a window of 32 by 32 pixel is used in the algorithm so that a paragraph can be extracted instead of a character. The document is scanned at 300 dpi and it is possible to extract more than one column into a block. Then, characters in the block are extracted using the edge following algorithm and their boundaries are used to detect multicolumn cases (bottom-up). Since the block extraction only scans through border pixels of paragraphs and characters need to be extracted in the OCR process, this algorithm is faster with fewer overheads than algorithms that need to access all pixels of a document.","PeriodicalId":358168,"journal":{"name":"Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128944582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
Tuning of controllers for integrating time delay processes 集成时滞过程控制器的调谐
Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239) Pub Date : 2001-08-19 DOI: 10.1109/TENCON.2001.949605
S. Majhi, C. Mahanta
{"title":"Tuning of controllers for integrating time delay processes","authors":"S. Majhi, C. Mahanta","doi":"10.1109/TENCON.2001.949605","DOIUrl":"https://doi.org/10.1109/TENCON.2001.949605","url":null,"abstract":"Presents an identification method and a simple control strategy for open loop integrating processes with time delay. From a symmetrical relay test the open-loop integrating process model transfer function is estimated. A control strategy involving an inner loop in the feedback path and a proportional integral controller in the feedforward path is proposed. The inner feedback loop with a controller plays an important role in stabilizing the integrating processes. Then the PI controller in the outer loop is designed to control the stabilized process efficiently. Simple tuning formulae interims of the estimated process model parameters have been derived for the controllers based on user-specified gain and phase margins. A comparison of the performances of the proposed design settings with those given by earlier workers is presented.","PeriodicalId":358168,"journal":{"name":"Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131229723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
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