IEE Proceedings - Vision, Image and Signal Processing

Issue 6 • Dec 1995

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Displaying Results 1 - 9 of 9
  • New line-based thinning algorithm

    Publication Year: 1995, Page(s):351 - 358
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (868 KB)

    Thinning algorithms can be classified into two general types: sequential and parallel. Most of them peel off the boundaries until the objects have been reduced to thin lines. The process is performed iteratively, the number of iterations being approximately equal to half the maximum line width of the object. Several sequential boundary based algorithms have been proposed, but they have limitations... View full abstract»

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  • Two-dimensional median filter algorithm for parallel reconfigurable computers

    Publication Year: 1995, Page(s):345 - 350
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (816 KB)

    A fast and flexible median algorithm is presented which scales well with window size. It is based on the use of image histograming. Two accumulator arrays are used to determine the median value of a discrete sequence of numbers. Speed-up factors of 3 and 4 are achieved over conventional histograming methods (those using single accumulator arrays). Two approaches have been implemented with optimisa... View full abstract»

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  • Index

    Publication Year: 1995
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (260 KB)

    First Page of the Article
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  • Efficient representation of object shape for silhouette intersection

    Publication Year: 1995, Page(s):359 - 365
    Cited by:  Papers (1)  |  Patents (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (796 KB)

    A new shape representation-the radial intersection set (RIS)-is presented. The RIS is an object-centred model in which 2-D and 3-D boundaries are represented via their intersection with radial lines from some specific origin. The RIS representation allows efficient 3-D reconstruction using silhouette intersection from an arbitrary number of 2-D perspective views. The relationship between the visua... View full abstract»

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  • Building irregular pyramids by dual-graph contraction

    Publication Year: 1995, Page(s):366 - 374
    Cited by:  Papers (10)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (804 KB)

    Many image analysis tasks lead to, or make use of, graph structures that are related through the analysis process with the planar layout of a digital image. The author presents a theory that allows the building of different types of hierarchies on top of such image graphs. The theory is based on the properties of a pair of dual-image graphs that the reduction process should preserve, e.g. the stru... View full abstract»

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  • Modified forward-backward overdetermined Prony method and its application in modelling heart sounds

    Publication Year: 1995, Page(s):375 - 380
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (568 KB)

    Prony's method is found to be a very effective method for the analysis-synthesis of transient data. However, straightforward application of this method can lead to poor performance, especially for short and noisy data records. The authors present a new over-determined forward-backward Prony method (MFBPM) and its application to the analysis of the first and second heart sounds. The accuracy of the... View full abstract»

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  • New transform using the Mersenne numbers

    Publication Year: 1995, Page(s):381 - 388
    Cited by:  Papers (21)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (600 KB)

    Number theoretic transforms (NTTs) find applications in the calculation of convolutions and correlations. They can perform these calculations without introducing additional noise in the processing due to rounding or truncation. Among all NTTs, Fermat and Mersenne number transforms have been given particular attention. However, the main drawback of these transforms is the inconvenient word length f... View full abstract»

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  • Continuous-time envelope constrained filter design via orthonormal filters

    Publication Year: 1995, Page(s):389 - 394
    Cited by:  Papers (10)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (568 KB)

    The envelope constrained (EC) filtering problem is concerned with designing a filter which minimises the gain to input noise while its response to a given signal fits into a prescribed envelope. This problem had been formulated as a constrained optimisation problem in Hilbert space. By restricting these filters to the span of a finite orthonormal set, the EC filtering problem can be posed as a fin... View full abstract»

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  • Channel-effect-cancellation method for speech recognition over telephone systems

    Publication Year: 1995, Page(s):395 - 399
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (424 KB)

    The performance degradation of speech recognition in telephone systems is due to the additive noise and the filtering effect of telephone channels. The authors propose a probabilistic technique to overcome the filtering effect in telephone systems. A set of reference filters, represented in terms of the cepstrum, is generated by clustering the cepstra of inverse telephone channels. A channel-effec... View full abstract»

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Aims & Scope

Published from 1994-2006, IEE Proceedings - Vision, Image and Signal Processing contained significant and original contributions on computer vision, image processing and signal processing.

Full Aims & Scope