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Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030)最新文献

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Neural concurrent subsampling and interpolation for images 图像的神经并发子采样和插值
Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030) Pub Date : 1999-10-28 DOI: 10.1109/TENCON.1999.818674
Jong-Ok Kim, Byung-Tae Choi, A. Morales, S. Ko
{"title":"Neural concurrent subsampling and interpolation for images","authors":"Jong-Ok Kim, Byung-Tae Choi, A. Morales, S. Ko","doi":"10.1109/TENCON.1999.818674","DOIUrl":"https://doi.org/10.1109/TENCON.1999.818674","url":null,"abstract":"This paper presents a new method for image subsampling and interpolation based on the feedforward neural network (FNN). The proposed technique employs a single FNN with three hidden layers for both subsampling and interpolation, providing the advantages of high speed, parallel processing capability, and good image reproduction quality. Experimental results show that the proposed technique exhibits an increased performance over conventional ones.","PeriodicalId":121142,"journal":{"name":"Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129855637","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
Multiuser detection for DS/CDMA systems with adaptive antenna array 基于自适应天线阵列的DS/CDMA系统多用户检测
Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030) Pub Date : 1999-09-15 DOI: 10.1109/TENCON.1999.818650
Jong Won Park, S. Shin, K. Kwak
{"title":"Multiuser detection for DS/CDMA systems with adaptive antenna array","authors":"Jong Won Park, S. Shin, K. Kwak","doi":"10.1109/TENCON.1999.818650","DOIUrl":"https://doi.org/10.1109/TENCON.1999.818650","url":null,"abstract":"Recently, the study on adaptive antenna array systems has been investigated to combat multiple access interference for CDMA systems. An adaptive antenna array can cancel out an undesired signal using beamforming. However, if there interfering signals from undesired users with the same arrival angle as that of a desired user, an adaptive antenna array cannot suppress it. This paper proposes an adaptive antenna array including a multiuser detection unit to cancel out remaining interference at the same beamforming region (arrival angle). The performance analysis of the proposed system is developed for frequency selective Rayleigh fading channels. Simulation results show that the proposed system provides a significantly enhanced performance.","PeriodicalId":121142,"journal":{"name":"Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115436179","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: 3
Performance of adaptive beamforming using the split RLS algorithm 使用分裂RLS算法的自适应波束形成性能
Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030) Pub Date : 1999-09-15 DOI: 10.1109/TENCON.1999.818645
I. Joo, Seungho Choi, Kiseon Kim
{"title":"Performance of adaptive beamforming using the split RLS algorithm","authors":"I. Joo, Seungho Choi, Kiseon Kim","doi":"10.1109/TENCON.1999.818645","DOIUrl":"https://doi.org/10.1109/TENCON.1999.818645","url":null,"abstract":"In this paper a novel adaptive beamforming scheme is described. This scheme is implemented basically based on the GSC (generalized sidelobe canceller) algorithm which is one of the famous adaptive interference suppression schemes. The implementation of GSC requires complex computations due to the adaptive filtering. Therefore, we propose an efficient GSC employing the split RLS algorithm. However, this method leads to an estimation error caused by the correlation between the split vectors. In order to reduce the estimation error the proposed GSC is combined with a Walsh blocking matrix instead of a bi-diagonal one. In conclusion, the SINR of the proposed method is as close as possible to the SINR obtained by full tap solution as its complexity decreases. When the system complexity decreases nearly half the SINR of the proposed method becomes 1 dB worse than that of the full tap solution.","PeriodicalId":121142,"journal":{"name":"Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030)","volume":"178 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124434078","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: 1
Achieving strongly stable adaptive control system using intelligent auto-tuning 采用智能自整定实现强稳定自适应控制系统
Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030) Pub Date : 1999-09-15 DOI: 10.1109/TENCON.1999.818437
P. Ratiroch-anant, Prijapanij, Jongkol, Masatoshi ANAl, Hiroshi Hirata
{"title":"Achieving strongly stable adaptive control system using intelligent auto-tuning","authors":"P. Ratiroch-anant, Prijapanij, Jongkol, Masatoshi ANAl, Hiroshi Hirata","doi":"10.1109/TENCON.1999.818437","DOIUrl":"https://doi.org/10.1109/TENCON.1999.818437","url":null,"abstract":"The practical design method of a strongly stable system for adaptive control is proposed. The stable pole of an optimal servo system is specified to the pole placement of a closed-loop in the adaptive control system and the stability index is introduced for the evaluation of the relative stability. The appropriate characteristics can be derived, by adjusting automatically the weight of a performance index in optimal control by means of the fuzzy inference on the basis of a stability index. Numerical simulation is used to prove that the proposed method provides sufficient performance regarding both tuning and control.","PeriodicalId":121142,"journal":{"name":"Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116685260","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 speech enhancement of the G.723.1 vocoder using multi-order formant postfilter 采用多阶形成峰后置滤波器对G.723.1声码器进行语音增强
Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030) Pub Date : 1999-09-15 DOI: 10.1109/TENCON.1999.818513
Hee Won Lee, Jeong-Jin Kim, K. Jang, M. Bae
{"title":"The speech enhancement of the G.723.1 vocoder using multi-order formant postfilter","authors":"Hee Won Lee, Jeong-Jin Kim, K. Jang, M. Bae","doi":"10.1109/TENCON.1999.818513","DOIUrl":"https://doi.org/10.1109/TENCON.1999.818513","url":null,"abstract":"The speech quality of CELP type vocoders is improved by compensating the formant distortion with a formant postfilter. The formant postfilter is generally composed of the conventional ARMA filter with the 1-order tilt compensation filter. We propose a new method to improve speech quality using multi-order tilt compensation filter instead of the 1-order tilt compensation filter. This algorithm is applied to G.723.1 for Internet phone or videoconferencing. Consequently, spectrum distortion is improved about 3.22% and speech quality is improved about 0.04 of MOS score maximally.","PeriodicalId":121142,"journal":{"name":"Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030)","volume":"293 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117050010","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: 2
WEBIO library for executing application programs on the Internet 用于在Internet上执行应用程序的WEBIO库
Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030) Pub Date : 1999-09-15 DOI: 10.1109/TENCON.1999.818721
Myunghwa Kang, Jisook Kwon, Youk Kwon, Oksun Lee, Dongha Shin
{"title":"WEBIO library for executing application programs on the Internet","authors":"Myunghwa Kang, Jisook Kwon, Youk Kwon, Oksun Lee, Dongha Shin","doi":"10.1109/TENCON.1999.818721","DOIUrl":"https://doi.org/10.1109/TENCON.1999.818721","url":null,"abstract":"Before Internet and WWW were available, conventional application programs were executed on terminals connected to host machines. Today, many services are provided through Web browsers connected to the Internet. As we can see easily, it is difficult to execute an application program developed for the conventional terminals on the Internet because the I/O scheme used for terminals is different from the I/O scheme used for Web browsers. We describe the WEBIO library that extends the concepts of conventional terminal I/O to Web I/O. By using the library, we can easily modify application programs developed for terminals to be executed through Web browsers and we can easily build application programs that are executed through Web browsers. The library consists of a CGI program and a set of Web I/O routines for programming languages, namely C and Prolog.","PeriodicalId":121142,"journal":{"name":"Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127203618","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
A study on lung nodule detection using neural networks 基于神经网络的肺结节检测研究
Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030) Pub Date : 1999-09-15 DOI: 10.1109/TENCON.1999.818629
Juwon Lee, Han-Wook Lee, Jong-Hoe Lee, Ick-Tae Kang, Gun-Ki Lee
{"title":"A study on lung nodule detection using neural networks","authors":"Juwon Lee, Han-Wook Lee, Jong-Hoe Lee, Ick-Tae Kang, Gun-Ki Lee","doi":"10.1109/TENCON.1999.818629","DOIUrl":"https://doi.org/10.1109/TENCON.1999.818629","url":null,"abstract":"In this study, the authors developed a method for disease detection using an artificial neural network and digital image processing of a chest radiograph. In a conventional physical examination radiologists check the chest image projected on a viewing box by a magnifying glass and determine what the disease is. The detection of disease on X-ray fluoroscopy images is tedious and time-consuming for humans. This lowers the efficiency for chest diagnosis as many mistakes by the radiologist are caused because of the need to detect micropathology from a film of small size. So, the authors propose a method to quickly find out what the object on a chest radiograph is. This method comprises the functions of image sampling, median filter, neural network image equalizer and neural network pattern recognition. The authors confirm that this method has improved the problems of conventional methods.","PeriodicalId":121142,"journal":{"name":"Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127218070","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
Binaural sound reproduction using head-related transfer functions (HRTFs) approximated by IIR filters 使用由IIR滤波器近似的头部相关传递函数(hrtf)的双耳声音再现
Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030) Pub Date : 1999-09-15 DOI: 10.1109/TENCON.1999.818372
H. Hasegawa, M. Kasuga, S. Matsumoto, A. Koike
{"title":"Binaural sound reproduction using head-related transfer functions (HRTFs) approximated by IIR filters","authors":"H. Hasegawa, M. Kasuga, S. Matsumoto, A. Koike","doi":"10.1109/TENCON.1999.818372","DOIUrl":"https://doi.org/10.1109/TENCON.1999.818372","url":null,"abstract":"We propose a method using an IIR filter for simple realization of sound image localization. The head-related transfer functions (HRTFs) of a dummy-head are approximated by third to seventh-order IIR filters. The binaural signal sounds using the approximated HRTFs are reproduced via two loudspeakers, and sound image localization on the horizontal plane is realized. Experiments on the direction and the elevation angle of the sound image are carried out with 3 subjects. The results of the experiments show that the localization on the horizontal plane using the approximated HRTFs is of the same accuracy as the case of FIR filters that simulate the HRTFs.","PeriodicalId":121142,"journal":{"name":"Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030)","volume":"223 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127544739","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: 3
Efficient scan conversion with edge enhancement and its VLSI architecture 基于边缘增强的高效扫描转换及其VLSI结构
Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030) Pub Date : 1999-09-15 DOI: 10.1109/TENCON.1999.818367
H. Lee, T. Bae, Jin Woo Park, Kun-Woen Song, Yeong-Ho Ha
{"title":"Efficient scan conversion with edge enhancement and its VLSI architecture","authors":"H. Lee, T. Bae, Jin Woo Park, Kun-Woen Song, Yeong-Ho Ha","doi":"10.1109/TENCON.1999.818367","DOIUrl":"https://doi.org/10.1109/TENCON.1999.818367","url":null,"abstract":"Field-based scan conversion converts every field in an interlaced sequence to a progressive format or doubles the field rate from 60 Hz to 120 Hz. This paper proposes the new field-based scan conversion that consists of spatial interpolation based on spatial correlation and edge enhancement. First, edge-preserving directional interpolation is performed along the vertical direction to double the field rate. Second, edge enhancement based on unsharp masking is used to increase the contrast which is sensitive to the HVS (human visual system). The proposed method is very simple and hardware complexity for realizing the algorithm is very low.","PeriodicalId":121142,"journal":{"name":"Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125901072","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
Performability modeling of channel allocation in cellular networks using stochastic reward nets 基于随机奖励网的蜂窝网络信道分配性能建模
Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030) Pub Date : 1999-09-15 DOI: 10.1109/TENCON.1999.818527
C. Ro, Myungwhan Choi, Gi Rae Kim
{"title":"Performability modeling of channel allocation in cellular networks using stochastic reward nets","authors":"C. Ro, Myungwhan Choi, Gi Rae Kim","doi":"10.1109/TENCON.1999.818527","DOIUrl":"https://doi.org/10.1109/TENCON.1999.818527","url":null,"abstract":"A combined performance and reliability/availability model for channel allocation is introduced. Stochastic reward nets (SRNs) models are presented for this purpose as Markov reward models, which are obtained by associating reward rates with Markov chain's state. To solve both non-exponential and state largeness problems, advanced modeling techniques such as phase approximation approach, hierarchical modeling and fixed point iteration techniques are described.","PeriodicalId":121142,"journal":{"name":"Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125971100","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
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