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IEE Proceedings - Vision, Image and Signal Processing

Issue 5 • Date Oct 1996

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Displaying Results 1 - 9 of 9
  • Lateral inhibition net and weighted matching algorithms for speech recognition in noise

    Publication Year: 1996, Page(s):324 - 330
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (696 KB)

    The authors address the problem of speech recognition with signals corrupted by white Gaussian additive noise at moderate SNR. The energy of the noise is not required. A technique based on a lateral inhibition process approximation with a multilayer neural net (the lateral inhibition net (LIN)) and neural net processing efficacy weighting in acoustic pattern matching algorithms is proposed. In the... View full abstract»

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  • Automatic visual inspection based upon a variant of the n-tuple technique

    Publication Year: 1996, Page(s):301 - 309
    Cited by:  Patents (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1396 KB)

    The authors present a new rapid image analysis technique ideally suited for both production line and generalised flaw detection. It is a variant of the n-tuple technique and uses nine selected attributes based on five pixels arranged in a cross shape. The technique requires a flaw free image as well as the image under test. The estimation of the flaw size and its shape is given by recording freque... View full abstract»

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  • Utilisation of the MV spectrum for diagnosis and estimation of harmonic fields

    Publication Year: 1996, Page(s):273 - 278
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (632 KB)

    The authors consider the identification of a single channel multidimensional harmonic signal field contained in an unknown and possibly nonstationary noise field. A technique is presented using the convergence-based point spectra developed by Frazho and Sherman (1990, 1991). This technique has the advantage of discerning between point and narrowband noise spectra based on the monotonic convergence... View full abstract»

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  • Two-stage bit allocation algorithm for stereo audio coder

    Publication Year: 1996, Page(s):331 - 336
    Cited by:  Papers (2)  |  Patents (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (616 KB)

    A new bit allocation algorithm is proposed and applied in a stereo transform coder. This algorithm is a two-stage approach based on the minimisation of perceptual distortion measured by artificial ears. At the first stage, the use of minimum frequency-weighted reconstruction error is exploited, in which the weighting factors are related to the masking threshold and the absolute hearing threshold. ... View full abstract»

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  • Surface triangulation for 3-D scene model construction from stereo

    Publication Year: 1996, Page(s):310 - 314
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1040 KB)

    The construction of an accurate 3-D scene model is a fundamental aspect of any model-based image coding scheme. This article describes the generation of a triangular facet surface representation from the data acquired by a calibrated binocular (stereo) camera system View full abstract»

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  • Walsh-like functions and their relations

    Publication Year: 1996, Page(s):279 - 284
    Cited by:  Papers (5)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (616 KB)

    A new discrete transform, the `Haar-Walsh transform', has been introduced. Similar to well known Walsh and non-normalised Haar transforms, the new transform assumes only +1 and -1 values, hence it is a Walsh-like function and can be used in different applications of digital signal and image processing. In particular, it is extremely well suited to the processing of two-valued binary logic signals.... View full abstract»

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  • Compressed video processing for cut detection

    Publication Year: 1996, Page(s):315 - 323
    Cited by:  Papers (24)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1156 KB)

    One of the challenging problems in video databases is the organisation of video information. Segmenting a video into a number of clips and characterising each clip has been suggested as one mechanism for organising video information. This approach requires a suitable method to automatically locate cut points (boundaries between consecutive camera shots in a video). Several existing techniques solv... View full abstract»

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  • Image coding using wavelet transform and classified vector quantisation

    Publication Year: 1996, Page(s):285 - 291
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1776 KB)

    The wavelet transform, which provides a multiresolution representation of images, has been widely used in image compression. A new image coding scheme using the wavelet transform and classified vector quantisation is presented. The input image is first decomposed into a hierarchy of three layers containing ten subimages by the discrete wavelet transform. The lowest resolution low frequency subimag... View full abstract»

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  • Efficient technique for circle detection using hypothesis filtering and Hough transform

    Publication Year: 1996, Page(s):292 - 300
    Cited by:  Papers (12)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1000 KB)

    A fast circle detection method using a variant of Hough-like technique is reported. The proposed technique is simple in implementation, efficient in computation and robust to noise. In general, to evaluate circle parameters for all possible point triplets in an edge image containing n points, nC3 enumerations of the points have to be examined. However, if specific relations o... View full abstract»

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