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2001 Vol. 23, No. 1

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Articles
RESEARCH OF EFFECTIVE SCALE IN MULTISCALE EDGE DETECTION
Yang Xuan, Yang Wanhai, Liang Dequn
2001, 23(1): 1-8.
Abstract:
The filtering scales of different edge models axe different in edge detection. The effective scales of different edge models based on compact,symmetry and smooth function are discussed in detail. The effective scale ranges of Gauss function and cubic...
FRACTIONAL DIFFERENCE ESTIMATION FOR THE PARAMETERS OF RANDOM FRACTAL SIGNAL
Chen Yanhui, Xie Weixin
2001, 23(1): 9-15.
Abstract:
The definition, property and time-domain expression of random fractal signal are introduced in brief. The fractional difference equation of random fractal series is induced by substituting difference operator for differential operator, and the fracti...
A SPEECH CODING ALGORITHM WITH LOCAL NONLINEAR PREDICTION MODEL
Ma Ni, Wei Gang
2001, 23(1): 16-22.
Abstract:
A new signal processing algorithm based on a local nonlinear prediction modei (LNLP) is presented. With the same implementation, the speech predicting and coding based on LNLP gives improved performance and the computational efforts for LNLP analysis...
THE OPTIMIZATION FOR VLD AND ITS STATE-MACHINE BASED ON MULTI-LEVEL LUT
Li Wen, Li Shuxiong, Zhu Weile
2001, 23(1): 23-29.
Abstract:
The multi-level LUT method for VLD is a fast, memory efficient method and is widely implemented in digital video and image decoders. This paper discusses the design and optimization for multi-level LUT and its state-machine in details, provides a for...
DISCRETE MOMENT INVARIANT ALGORITHM AND ITS APPLICATION ON TARGET RECOGNITION
Pan Quan, Cheng Yongmei, Du Yajuan, Zhang Hongcai
2001, 23(1): 30-36.
Abstract:
The paper analyses the influence of scale factor on discrete moment invariant characteristics. A modified attributive center characteristics with scale, translation and rotating invariances are proposed. The moment invariant characteristics are used ...
A STUDY ON FUZZY C-SPHERICAL SHELL(FCSS)CLUSTERING ALGORITHMS
Wei Limei, Xie Weixin
2001, 23(1): 37-44.
Abstract:
The two Fuzzy C-Spherical Shell (FCSS) clustering algorithms based on the same object function are analyzed and a new algorithm is proposed. The properties of the new algorithm in both the speed and the accuracy are appropriate.
NOVEL CONDITIONS OF ASYMPTOTIC STABILITY FOR CELLULAR NEURAL NETWORKS WITH TIME DELAY
Liao Xiaofeng, Wu Zhongfu, Yu Juebang
2001, 23(1): 45-52.
Abstract:
In this paper, global asymptotic stability for cellular neural networks with time delay is discussed using a novel Liapunov function. Some novel sufficient conditions for global asymptotic stability are obtained. Those results are simple and practica...
MODELING AND ANALYSIS FOR SERVICE PERFORMANCE OF NETWORK BASED ON HTTP
Yu Li, Shi Bingxin
2001, 23(1): 53-59.
Abstract:
In this paper, the service performance model for Web system based on HTTP is presented, in which the Web server and the communication network are considered as one system to construct an open Markov queue network. This model is also extended to multi...
CRYPTOGRAPHIC PROPERTIES OF COMPOSITE MULTI-OUTPUT FEEDFORWARD FUNCTIONS
Chen Lusheng, Fu Fangwei
2001, 23(1): 60-67.
Abstract:
In this paper, composite and degenerated multi-output feedforward functions are discussed and some cryptographic properties of them are given.
STUDIES ON GEOCODING SYSTEM FOR AIRBORNE SAR IMAGE BASED ON INS/GPS DATA
Shen Ting
2001, 23(1): 68-74.
Abstract:
This paper theoretically presents the geocoding principle and method for airborne SAR system image, which is converted only by the positional and directional data from the aircraft mounted SAR. The calculated equations and error functions of the geoc...
ALGEBRAIC THEORY FOR HYBRID CMOS MULTIVALUED CIRCUITS
Chen Xiexiong, Wu Xunwei, Shen Jizhong, Cheng Jie
2001, 23(1): 75-80.
Abstract:
Based on the transmission function theory for voltage-mode CMOS circuits and an algebra for current-mode CMOS multivalued circuits, this paper presents an algebraic theory for hybrid CMOS multivalued circuits and uses it to design quaternary decoder ...
RESEARCH ON CATHODE-ON-MEMBRANE VACUUM MICROELECTRONIC PRESSURE SENSOR
Tao Xinxin, Xia Shanhong, Su Jie, Chen Shaofeng
2001, 23(1): 81-84.
Abstract:
This paper proposes a novel cathode-on-membrane vacuum microelectronic pressure sensor. The cathode-on-membrane structure has been fabricated. The properties of the silicon membrane under pressure are simulated, and the effects of the parameters of m...
A NEW IMAGE FUSION ALGORITHM
Tang Zhiwei, Wang Jianguo, Zhao Zhiqin, Huang Shunji
2001, 23(1): 88-91.
Abstract:
A new image fusion algorithm is presented in this paper. This algorithm is used to implement fusion of SAR image and optical image,on the basis of the reciprocal characteristic of SAR image and optical image. The algorithm of image fusion presented i...
QUAD TREE PLANE SURFACE APPROXIMATION METHOD FOR IMAGE CODING
Wang Huiyuan
2001, 23(1): 92-95.
Abstract:
A plane surface approximation method for image coding and its quad tree scheme are presented in this paper. For a given image block, an optimal plane is found under the min-imum square error criteria, and the pixels of the block are approximated by t...
USING THE GENETIC ALGORITHMS TO SOLVE THE PROBLEM OF OPTIMAL SPARE ALLOCATION FOR FAULT-TOLERANT VLSI
Zhao Tianxu, Hao Yue, Zhou Shuisheng
2001, 23(1): 96-99.
Abstract:
An increase in chip area and circuit complexity leads to a reduction in the yield of production. In order to solve the problem of low yield by defects in process of large scale integrated circuits manufacture, the fault-tolerant technique is introduc...
Zhang Zhaotian, Zhang Zhijian
2001, 23(1): 100-101.
Abstract:
2001, 23(1): 102-103.
Abstract:
Discussions
ABOUT UNDULATING PROPAGATION OF THE ELECTROMAGNETIC WAVE
Zhang Xiaojuan, Wang Ying, Song Wenmiao
2001, 23(1): 85-87.
Abstract:
The idea about undulating propagation presented by the paper Undulating propagation of the electromagnetic wave is discussed. This paper point out the mistake of the idea, which is the result of wrong mathematicaJ formula of the polarization wave and...