TENCON '96. Proceedings., 1996 IEEE TENCON. Digital Signal Processing Applications

29-29 Nov. 1996

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  • 1996 IEEE TENCON Digital Signal Processing Applications

    Publication Year: 1996, Page(s):0_3 - xii
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    Freely Available from IEEE
  • DSP-based testing system for A/D converters applying quantization theory

    Publication Year: 1996, Page(s):749 - 753 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (396 KB)

    Classical testing procedures for A/D converters are based on mathematical methods that do not need large and expensive hardware resources. A number of works devoted to introducing new methodologies to test the ADC performance led, on the other hand, to powerful hardware systems in order to implement these tests in a reasonable time. However, these innovative methods, introducing the full dynamic t... View full abstract»

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  • Author index

    Publication Year: 1996, Page(s):0_11 - 0_14
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    Freely Available from IEEE
  • An implementation of real-time hardware for moving object detection and discrimination

    Publication Year: 1996, Page(s):961 - 966 vol.2
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (516 KB)

    In this paper, we introduce real-time hardware implemented for the purpose of detecting the boundary points of a moving object and discriminating it from non-targets, which are basic functions of an unmanned surveillance system. The implemented hardware is composed of the two parts; one is a hard-wired logic part which computes spatio-temporal derivatives, and the other is a discrimination part in... View full abstract»

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  • Discrete wavelet transform techniques in speech processing

    Publication Year: 1996, Page(s):514 - 519 vol.2
    Cited by:  Papers (20)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1560 KB)

    The trend towards real-time, low-bit-rate speech coders dictates current research efforts in speech compression. A method being evaluated uses wavelets for speech analysis and synthesis. Distinguishing between voiced and unvoiced speech, determining pitch, and methods for choosing optimum wavelets for speech compression are discussed. We observe that wavelets concentrate speech energy into bands w... View full abstract»

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  • Block motion estimation based on spatio-temporal correlation

    Publication Year: 1996, Page(s):955 - 960 vol.2
    Cited by:  Patents (9)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (448 KB)

    In this paper, we present a new motion estimation algorithm which determines an initial motion vector and defines a search window adaptively using the motion information of spatio-temporal neighborhood blocks. First, an initial motion vector based on spatio-temporal correlation of motion is predicted. Next, we define a search window adaptively using the Gibbs/Markov random field model. The propose... View full abstract»

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  • Listening to musical rhythms with progressive wavelets

    Publication Year: 1996, Page(s):508 - 513 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (828 KB)

    Analysing and modelling the human perception of musical rhythm provides insights into non-verbal knowledge representation, quantification of musicological theories, and intelligent tools for music performance and composition. Linear phase Gabor transform wavelets are an analysis technique capable of making explicit many elements of musical rhythm theory. Transforms over a continuous time-scale pla... View full abstract»

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  • Implementation of half-pel precision motion estimator for MPEG2 MP@HL

    Publication Year: 1996, Page(s):949 - 954 vol.2
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (636 KB)

    A half-pel precision single chip motion estimator is described dedicatedly for MPEG2 MP@HL moving pictures. Adopting a two-level hierarchical searching algorithm and the maximum possible reuse mechanism of reference pixels, MP@HL motion estimation is successfully facilitated. The broadcasting type PE array is used both for integer-pel precision vector and half-pel precision vector search processes... View full abstract»

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  • Some special wavelets with faster algorithms

    Publication Year: 1996, Page(s):502 - 507 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (364 KB)

    In this paper, we attempt to design some new wavelet functions that can achieve a significant saving in terms of computation time when the corresponding wavelet decomposition algorithms are being implemented. The performance of these wavelets is evaluated rigorously and comparisons are also made with the Daubechies wavelets View full abstract»

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  • 2-dimensional motion-analysis in object-oriented coding

    Publication Year: 1996, Page(s):945 - 948 vol.2
    Cited by:  Papers (1)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (496 KB)

    This paper describes a motion analysis algorithm in the object-oriented coding for video sequences and objects in the two consecutive frames of the video sequence are assumed to have moved in translational motion only. It incorporates the knowledge of the border coding process which exploits the temporal redundancies between successive image frames. After segmentation, the boundary information of ... View full abstract»

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  • A stabilized zero-crossing representation in the wavelet transform domain and its extension to image representation for early vision

    Publication Year: 1996, Page(s):496 - 501 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (996 KB)

    We present a new stabilized zero-crossing representation with a salient feature that the signal reconstruction problem reduces to a typical minimum-norm optimization problem, the solution of which is formulated as a linear simultaneous equation, and develop an iterative algorithm for signal reconstruction. Moreover, we extend them to the two-dimensional case. With the extended two-dimensional reco... View full abstract»

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  • New approach for beamforming in a coherent and incoherent environment

    Publication Year: 1996, Page(s):858 - 862 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (296 KB)

    In beamforming applications the degrees of freedom or the maximum number of signals allowed, is an important number that will decide the number of sensors and the associated hardware components required to achieve the desired performance. A flexible algorithm that allows us to control the degrees of freedom depending on the environment in which it operates, is presented View full abstract»

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  • Fingerprint compression using a modified wavelet transform and pyramid lattice vector quantization

    Publication Year: 1996, Page(s):798 - 803 vol.2
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (736 KB)

    A new compression algorithm for fingerprint images is introduced. A modified wavelet packet scheme which uses a fixed decomposition structure, matched to the statistics of fingerprint images, is presented. A technique for determining the most important coefficients is introduced. The algorithm uses both hard and soft thresholding schemes to make the procedure fast and efficient. The bit allocation... View full abstract»

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  • A new center-biased orthogonal search algorithm for fast block motion estimation

    Publication Year: 1996, Page(s):874 - 877 vol.2
    Cited by:  Papers (3)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (352 KB)

    A new center-biased orthogonal search algorithm (CBOSA) for fast block-based motion estimation is proposed. The new algorithm uses a center-biased search point pattern, which is based on center-biased motion vector distribution characteristic of the real-world image sequences, for improving the performance of the conventional orthogonal search algorithm (OSA). Simulation results show that the prop... View full abstract»

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  • Two clustering algorithms and their application to motion segmentation

    Publication Year: 1996, Page(s):939 - 944 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (632 KB)

    Two clustering algorithms have been developed for data classification where there exists no a priori knowledge about the number of clusters. One algorithm is based on robust statistics, while the another one was motivated by the N body problem of theoretical mechanics. The algorithms were applied to the problem of motion segmentation of image sequences, based on similarity in velocity space. Exper... View full abstract»

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  • A wavelet multiresolution and neural network system for BCG signal analysis

    Publication Year: 1996, Page(s):491 - 495 vol.2
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (324 KB)

    Ballistocardiography (BCG) has an interesting feature that no electrodes are needed to be attached to the body during measurements. This provides a potential application to assess the patients heart condition in the home. Artificial neural networks (ANNs) have several properties that make them promising for the automatic signal classification problems. In the time domain of the BCG classification,... View full abstract»

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  • A multiple SIMD approach to radar signal processing

    Publication Year: 1996, Page(s):852 - 857 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (648 KB)

    Next generation radar systems, with phase-controlled array antennas, will have to process data that is many times larger than in current systems. This requires an enormous computing power. Even in a relatively small airborne radar system, with hard size and power consumption constraints, a sustained computing power of 40 GOPS (or 40 GFLOPS, if floating point calculations are used) will be needed t... View full abstract»

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  • Time-frequency analysis of heart sounds

    Publication Year: 1996, Page(s):553 - 558 vol.2
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (548 KB)

    From a study of the physical characteristics of heart sounds and human hearing capabilities, it is seen that only the highly trained ear may be able to detect heart sounds events. Also from a study of heart sound signals nature and the frequency domain analysis based on direct application of the Fourier transform technique, it is seen that this technique is inappropriate because important time eve... View full abstract»

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  • Recognition of multifont Farsi/Arabic characters using a fuzzy neural network

    Publication Year: 1996, Page(s):918 - 922 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (392 KB)

    In this paper an algorithm is developed for recognition of printed Farsi characters with various fonts, irrespective of size, rotation and stork. The system uses pseudo-Zernike moments as input features and the classifier consists of a complex of neural networks (NN) and fuzzy neural networks (FNN). The advantage of using FNN is it's ability to classify similar patterns. The performance of the sys... View full abstract»

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  • Fractal image compression with adjacent block parameter estimation

    Publication Year: 1996, Page(s):793 - 797 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1436 KB)

    Fractal image coding has been successfully applied to encode digital images at low bit rates. The usual coding technique is to partition a given image into a number of blocks (range blocks). Each block of the partition is expressed as the contractive transformation of another part of the image. However, such scheme does not take into account of the local smoothness in most images. We propose a nov... View full abstract»

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  • Output stabilization for kinetic networks. Part 2

    Publication Year: 1996, Page(s):737 - 742 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (420 KB)

    This paper deals with the observability and observer design of a certain class of reactors which are globally asymptotically feedback stabilizable. We show how to design two types of high gain observers: a Luemberger-like high gain observer and a high gain extended Kalman filter. Results of convergence of these estimators follow from our observability analysis. We prove that the nonlinear feedback... View full abstract»

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  • Visualizing ultrasonic vector velocity using the motion without movement algorithm

    Publication Year: 1996, Page(s):870 - 873 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (368 KB)

    The visualization of ultrasonic vector velocity data is a non-trivial task. The data is five-dimensional: x, y, velocity magnitude, velocity direction, and time. Most techniques have so far failed to deliver an intuitive approach to displaying such complex data. The motion without movement technique uses time variations in phase to create the illusion of motion without moving the pattern to be dis... View full abstract»

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  • Slant manipulation and character segmentation for forensic document examination

    Publication Year: 1996, Page(s):933 - 938 vol.2
    Cited by:  Papers (2)  |  Patents (10)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (480 KB)

    This paper presents some research work that has been undertaken in the area of software tools for forensic document analysis. The purpose of research into this area is to study the methods used by human experts in the forensic analysis and examination of questioned hand-written documents and to formulate computer tools to assist in this task. The computer tools needed will require image processing... View full abstract»

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  • Transform methods of PAM signals for asymmetric distribution in 3rd-order blind equalizer

    Publication Year: 1996, Page(s):614 - 618 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (368 KB)

    In this paper, we have considered the 3rd order blind equalizer using symmetric to asymmetric transforms and asymmetric to symmetric transforms of PAM signals by the square root operation and reciprocal operation. The purposes of these transforms and 3rd order blind equalizations are (i) better mean square error (MSE) performances with less computational complexities than 4th order blind equalizer... View full abstract»

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  • A new wavelet network architecture for echo cancellation

    Publication Year: 1996, Page(s):598 - 601 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (260 KB)

    We put forward a new wavelet network architecture for echo cancellation. We can efficiently identify the echo path by the proposed network structure based on the theory of multiresolution analysis and functional analysis. The corresponding multiresolutional learning algorithm is also presented. The performance of the proposed wavelet network architecture with the corresponding learning algorithm a... View full abstract»

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