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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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Ring-shaped digital watermark for rotated and scaled images using random-phase sinusoidal function 环形数字水印旋转和缩放图像使用随机相位正弦函数
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.2001.949606
N. Chotikakamthorn, S. Pholsomboon
{"title":"Ring-shaped digital watermark for rotated and scaled images using random-phase sinusoidal function","authors":"N. Chotikakamthorn, S. Pholsomboon","doi":"10.1109/TENCON.2001.949606","DOIUrl":"https://doi.org/10.1109/TENCON.2001.949606","url":null,"abstract":"Digital watermarking for a still image is considered. A new spatial-domain watermarking method is presented. The method is applicable for rotated and scaled images. A watermark is constructed with a ring-shaped constraint. A sinusoidal function with random phase is used for generating each watermark ring. The method can not only be used for watermark detection in the presence of image rotation, but also for the estimation of the angle rotated, without the need for the original image. A practical method for the construction of such a watermark is described. Results from experiments performed with images, in electronic and printed forms, are provided.","PeriodicalId":358168,"journal":{"name":"Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239)","volume":"3 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":"115712141","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: 6
Effects of multiple threshold values in hybrid code acquisition algorithm for direct sequence spread spectrum systems 多阈值对直接序列扩频系统混合码采集算法的影响
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.2001.949661
Seongjoo Lee, Jaeseok Kim
{"title":"Effects of multiple threshold values in hybrid code acquisition algorithm for direct sequence spread spectrum systems","authors":"Seongjoo Lee, Jaeseok Kim","doi":"10.1109/TENCON.2001.949661","DOIUrl":"https://doi.org/10.1109/TENCON.2001.949661","url":null,"abstract":"We propose a hybrid code acquisition algorithm with multiple threshold values for direct sequence spread spectrum (DS-SS) systems, and analyze the algorithm in terms of the detection and the false alarm probabilities. The conventional code acquisition algorithm uses a single fixed threshold value, which is determined at particular SNR, so that it is hard to obtain the optimal performance of the acquisition system. A new decision method proposed in this paper uses multiple threshold values to increase the detection probability. Simulation result shows that our proposed scheme outperforms the conventional one in terms of the detection probability and also that the enhancement of performance is saturated when the number of thresholds is three. From these results, we can see that the use of multiple threshold values compensates for the performance degradation by use of a single pre-determined threshold value in the conventional algorithm.","PeriodicalId":358168,"journal":{"name":"Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239)","volume":"44 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":"127092003","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
Robust 3-dimensional subband video coder based on dithered pyramid vector quantizer 基于抖动金字塔矢量量化器的鲁棒三维子带视频编码器
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.2001.949689
M. Ashourian, Z. M. Yusof, S. Salleh, S. Bakar
{"title":"Robust 3-dimensional subband video coder based on dithered pyramid vector quantizer","authors":"M. Ashourian, Z. M. Yusof, S. Salleh, S. Bakar","doi":"10.1109/TENCON.2001.949689","DOIUrl":"https://doi.org/10.1109/TENCON.2001.949689","url":null,"abstract":"We present our results on the development of a robust video coder. The system consists of 3-dimensional subband filtering, optimized scalar quantization of the lowest temporal-spatial frequency subband and modified pyramid vector quantization for high frequency subbands. To improve the visual quality of the system at low bit-rates, dithering is used for the pyramid vector quantizers and its effectiveness is proved by a pair-comparison subjective test. To increase robustness to noise, productive enumeration is used for the pyramid vector quantizers. Also, with phase scrambling, the distribution of the lowest temporal-spatial band is changed to Gaussian which results in a better scalar quantization coding gain for this band and, by using a folded binary code, less sensitivity to noise. Results shows that at a high bit-error rate (5/spl times/10/sup -3/), the coder in average loses only 4 dB in peak signal-to-noise ratio.","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":"127540482","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
A new variable structure controller incorporating actuator dynamics 一种结合作动器动力学的新型变结构控制器
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.2001.949674
Jung Hoon Lee
{"title":"A new variable structure controller incorporating actuator dynamics","authors":"Jung Hoon Lee","doi":"10.1109/TENCON.2001.949674","DOIUrl":"https://doi.org/10.1109/TENCON.2001.949674","url":null,"abstract":"In this paper, the design of variable structure control systems is presented with incorporation of the dynamics of an actuator. The VSS controller design is formulated, including the dynamics of the actuator expressed as a state equation. An example is given to show the effectiveness of the developed algorithm.","PeriodicalId":358168,"journal":{"name":"Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239)","volume":"87 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":"125006732","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 small sized lateral trench electrode IGBT having improved latch-up and breakdown characteristics for power electronics 一种小型横向沟槽电极IGBT，具有改进的锁存和击穿特性
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.2001.949638
E. Kang, S. Moon, M. Sung
{"title":"A small sized lateral trench electrode IGBT having improved latch-up and breakdown characteristics for power electronics","authors":"E. Kang, S. Moon, M. Sung","doi":"10.1109/TENCON.2001.949638","DOIUrl":"https://doi.org/10.1109/TENCON.2001.949638","url":null,"abstract":"A new small sized Lateral Trench Electrode Insulated Gate Bipolar Transistor (LTEIGBT) was proposed to improve characteristics of the conventional Lateral IGBT (LIGBT) and Lateral Trench gate IGBT (LTIGBT). The entire Electrode of LTEIGBT was replaced with trench-type electrode. The LTEIGBT was designed so that the width of device was 19 /spl mu/m. Latch-up current densities of the proposed LTEIGBT increased 10 and 2.3 times more than those of the conventional LIGBT and LTIGBT. Forward blocking voltage of the LTEIGBT was 130 V. Conventional LIGBT and LTIGBT of the same size were 60 V and 100 V, respectively. Because the proposed LTEIGBT was constructed of trench-type electrodes, the electric field moved toward the trench-oxide layer and punch-through breakdown occurred, lately.","PeriodicalId":358168,"journal":{"name":"Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239)","volume":"84 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":"125662020","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
Design of caring communication media based on nursing theory and interpersonal psychology 基于护理理论与人际心理学的关怀传播媒介设计
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.2001.949542
A. Notsu, O. Katai, H. Kawakami
{"title":"Design of caring communication media based on nursing theory and interpersonal psychology","authors":"A. Notsu, O. Katai, H. Kawakami","doi":"10.1109/TENCON.2001.949542","DOIUrl":"https://doi.org/10.1109/TENCON.2001.949542","url":null,"abstract":"A technique for \"caring communication\" via computers based on nursing theory and interpersonal psychological approaches is introduced. The main gist in this research is a sophisticated organization of various messages on the Internet from various persons on common concerns such as clients and persons who care for them. As the bases of this organization, a famous theory of nursing, the Roy Adaptation model (C. Roy and H.A. Anderson, 1999; H.A. Andrews and C. Roy, 1986)), and also F. Heider's (1958) theory of Perceptual Balance based on his Naive Theory of Psychology are introduced. Heider's theory provides us with a method to analyze the perceptual consistencies (\"perceptual balance\") among the messages. This analysis is carried out by detecting these inconsistencies among the messages, where the detection can be done automatically. These inconsistencies are then related to various \"modes of caring intervention\" via the Roy Adaptation model of nursing. Hence, this message board provides us with an effective way for caring communication among the participants to the \"message board\".","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":"116097983","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: 7
A hybrid and flexible H.263-based error resilient and testing system 一种基于h .263的混合灵活的错误恢复和测试系统
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.2001.949564
Chien-Wu Tsai, To-Ju Huang, Kuo-Lin Fang, Ja-Ling Wu
{"title":"A hybrid and flexible H.263-based error resilient and testing system","authors":"Chien-Wu Tsai, To-Ju Huang, Kuo-Lin Fang, Ja-Ling Wu","doi":"10.1109/TENCON.2001.949564","DOIUrl":"https://doi.org/10.1109/TENCON.2001.949564","url":null,"abstract":"We propose a hybrid and flexible error resilient system for the H.263-based video, which can provide us an experimental platform for verifying the error robustness of an H.263-based video with different arrangements, and give us a lot of significant information about the effect of different combinations of error resilient techniques under different error conditions. In addition, some new error resilient techniques are proposed. The goal of this experimental system is to provide a developing assistant tool for constructing an error robust H.263-based video communication application.","PeriodicalId":358168,"journal":{"name":"Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239)","volume":"87 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":"122312394","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
A new blind rate decision algorithm 一种新的盲率决策算法
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.2001.949562
Jaehong Kim, J. Kong
{"title":"A new blind rate decision algorithm","authors":"Jaehong Kim, J. Kong","doi":"10.1109/TENCON.2001.949562","DOIUrl":"https://doi.org/10.1109/TENCON.2001.949562","url":null,"abstract":"In variable rate communication systems where the information of the data rate is not given to the receiver, estimating the data rate in the receiver is a very important factor in terms of determining the receiver performance. So far many algorithms estimating the received data rate have been proposed. The most popular one is the post-rate decision method using the Viterbi decoder. It causes the large power consumption due to high complexity, and requires much processing time. A new pre-rate decision method using a pre-decoder is proposed, which has a relatively simple structure in comparison with the Viterbi decoder. Compared with other existing algorithms, the proposed algorithm reduces the power consumption and increases the processing speed in the systems.","PeriodicalId":358168,"journal":{"name":"Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239)","volume":"10 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":"122312731","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
Colour image compression using the embedded wavelet algorithm and merged colour tree 采用嵌入小波算法和合并颜色树对彩色图像进行压缩
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.2001.949569
Ang Li-Minn, H. Cheung
{"title":"Colour image compression using the embedded wavelet algorithm and merged colour tree","authors":"Ang Li-Minn, H. Cheung","doi":"10.1109/TENCON.2001.949569","DOIUrl":"https://doi.org/10.1109/TENCON.2001.949569","url":null,"abstract":"We present an image compression algorithm for the coding of colour images using embedded wavelet (EW) techniques. An EW algorithm reorganizes the wavelet coefficients In the subbands into a tree structure which it then efficiently encodes for transmission. The coefficients in the tree structure are related by its spatial positions in the subbands. For colour images, separate tree structures can be established for the coding of each colour component. The focus of this work is to investigate a joint coding scheme for colour images using a merged tree structure which maintains the spatial relationships amongst the colour components.","PeriodicalId":358168,"journal":{"name":"Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239)","volume":"31 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":"122392449","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
Experimental results of using rough sets for printed Thai characters recognition 粗糙集用于印刷体泰文字识别的实验结果
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.2001.949608
S. Mitatha, K. Dejharn, F. Chevasuvit, B. Chankuang, W. Kasemsiri
{"title":"Experimental results of using rough sets for printed Thai characters recognition","authors":"S. Mitatha, K. Dejharn, F. Chevasuvit, B. Chankuang, W. Kasemsiri","doi":"10.1109/TENCON.2001.949608","DOIUrl":"https://doi.org/10.1109/TENCON.2001.949608","url":null,"abstract":"This paper proposes the experimental results of using rough sets for the recognition of printed Thai characters. We segment each character into 32 pieces sized 4/spl times/4 pixels, and then find the distribution of pixels that match a value of \"1\" (black dot) in each section. Following this, we use the resulting 32 values as the attributes for each given object. Afterwards, we create 3 sets of decision making rules from 3 different training sets and use those 3 sets of rules to classify each member of the unknown set. This set is composed of 42 Thai characters, excluding the two that are very rarely used, with 7 fonts and 7 sizes, for a total of 2058. The results are 46.20%, 63.15%, 73.12% for the first set of rules, the second set of rules and the third set of rules respectively. And the results when applying the set of rules to the unknowns related to each set of rules' training sets are 100% for all three set of rules.","PeriodicalId":358168,"journal":{"name":"Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239)","volume":"38 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":"122540688","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
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