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Proceedings., 11th IAPR International Conference on Pattern Recognition. Vol. III. Conference C: Image, Speech and Signal Analysis,

Date Aug. 30 1992-Sept. 1 1992

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  • Proceedings. 11th IAPR International Conference on Pattern Recognition. Vol.III. Conference C: Image, Speech and Signal Analysis

    Publication Year: 1992
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    Freely Available from IEEE
  • Neural recurrent estimator to gray scale image restoration based on 2D Kalman filtering

    Publication Year: 1992
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6 KB)

    First Page of the Article
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  • Restoration of blurred bilevel signals by multiscaling with finite support filters

    Publication Year: 1992
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    Freely Available from IEEE
  • Edge-region segmentation process based on generalized Voronoi diagram representation

    Publication Year: 1992, Page(s):323 - 326
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    Cooperative methods provide comfortable solutions to segmentation problems. Different works have been engaged in this way in order to combine edge and region based methods. The authors propose a split and merge approach to decompose the image into homogeneous Voronoi polygons. The cooperative aspect comes from the fact that some contours of Voronoi polygons are supported by frontiers issued from a... View full abstract»

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  • Robust primitive extraction in a range image

    Publication Year: 1992, Page(s):193 - 196
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB)

    The problem of geometric primitive extraction in a range image is considered. A segmentation algorithm segments the image into quadric patches and provides an efficient initialization for the extraction of geometric primitives by a genetic algorithm. These algorithms are shown to be simple, fast and robust to noise. A parallel implementation has been realized and results are shown on real data View full abstract»

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  • Automatic extraction of the intracranial cavity on transverse MR brain images

    Publication Year: 1992, Page(s):430 - 433
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    The morphometric analysis of various normal and pathological brain structures is the focus of interest in the study of a number of neuropsychiatric disorders such as Alzheimer's disease (AD) and multi infarct dementia (MID). These studies require the computation of the relative volumes and areas of cerebrospinal fluid (CSF), white matter, gray matter, and white matter lesions (WML) of several type... View full abstract»

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  • A proposal for an artificial neural network that optimizes reference vectors: FMNET

    Publication Year: 1992, Page(s):590 - 593
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (268 KB)

    A new artificial layered neural network model called FMNET (feature mapping and matching network) is proposed. FMNET has a feature mapping layer (F-layer) and a subsequent matching layer (M-layer). The F-layer maps the training set to the univariate Gaussian form and the M-layer creates or integrates the output neurons under the likelihood criterion to attain the unimodal Gaussian form. The well o... View full abstract»

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  • A unified approach to the segmentation of grey-level and dot-pattern images

    Publication Year: 1992, Page(s):319 - 322
    Cited by:  Papers (82)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    The authors show the close relationship between two algorithms developed in their laboratory: (1) for segmenting grey-scale images and (2) for grouping patterns of dots or disconnected edge fragments. In both cases the output consists of objects each of which is bounded by a closed contours and contains a skeleton whose components are explicitly linked to boundary components. The second algorithm ... View full abstract»

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  • A region-based spatio-temporal segmentation algorithm

    Publication Year: 1992, Page(s):189 - 192
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (724 KB)

    Presents an algorithm for the segmentation of an image sequence into spatio-temporal regions. This algorithm combines region growing and region tracking. The proposed approach relies on the temporal coherence of the image sequence and no correspondence analysis is needed. The algorithm is applied to image sequences which have been acquired with a moving camera View full abstract»

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  • An interblock BTC-VQ image coder

    Publication Year: 1992, Page(s):426 - 429
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (208 KB)

    For real-time image compression block truncation coding (BTC) is an attractive algorithm; it is simple to code, computationally fast and has good reconstruction image quality. Its main drawback is its high bit-rate of 2.0 bit/pixel. The authors show how the algorithm can be modified to take into account interblock correlations. The new algorithm retains all the advantages of the original BTC algor... View full abstract»

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  • An experience on automatic selection of the edge detectors

    Publication Year: 1992, Page(s):586 - 589
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    Summarizes a system, called SED `selection of edge detectors', which is able to select automatically edge detectors and their scales to extract a given edge. To avoid a combinatorial approach, the authors use several sources of information like the characteristics of the given edge, the properties of the detectors and the mutual relations between them. The authors illustrate our approach by the st... View full abstract»

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  • A cooperative network for contour grouping

    Publication Year: 1992, Page(s):315 - 318
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (388 KB)

    A new iterative algorithm for edge intensity image enhancement is proposed. It uses local cooperation-inhibition processes to produce an edge image in which the most relevant contours have reached maximal activation, and small gaps and junctions have been filled in. Implementation on a massively parallel machine has provided high speed performances, and results of experimentations with real scene ... View full abstract»

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  • A hierarchical model-based framework for segmenting embedded fluorescence biological targets

    Publication Year: 1992, Page(s):223 - 227
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (612 KB)

    Addresses the problem of detecting small regions of interest embedded in larger areas of interest as imaged by a fluorescence imaging system. The application exhibits the variation observed in biological specimens, which are primarily shape and intensity uncertainties. The presence of these variability together with uneven illumination and the lack of a global model, implies that a reliable nonpar... View full abstract»

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  • Peano scanning of arbitrary size images

    Publication Year: 1992, Page(s):565 - 568
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (276 KB)

    Discrete space-filling curves are not uniquely defined. In addition to the condition that the curve must pass all the points of the array only once, continuously, it is necessary to add some critera to select the best curves. The authors aim is to preserve two-dimensional continuity as much as possible. The weighted sum of the distances of the points in the curve is minimized, where the weights ar... View full abstract»

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  • Representation of range data with B-spline surface patches

    Publication Year: 1992, Page(s):745 - 748
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    Presents an implementation of deformable models for approximation of 3-D surfaces. It is an extension of work on B-snakes (Menet, Saint-Marc, and Gerard (1990), which approximate curves using B-splines. The user provides an initial simple surface, such as a cylinder or a plane, which is subject to internal forces and external forces which attracts it toward features. The problem is cast in terms o... View full abstract»

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  • On local linear transform and Gabor filter representation of texture

    Publication Year: 1992, Page(s):627 - 631
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    Presents a comparative study of two approaches to texture representation under the computational framework of multichannel spatial filtering. The two approaches compared are the Gabor multichannel receptive field model and local linear transform techniques. In the local linear transform approach, it is shown that the orthogonal masks derived from the discrete cosine transform (DCT) have some inter... View full abstract»

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  • Object recognition: the utopian method is dead; the time for combining simple methods has come

    Publication Year: 1992, Page(s):185 - 188
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (308 KB)

    Object recognition methods are usually suited to objects which contain specific kinds of features. However, a collection of real world objects seldom contains only one kind of feature. The premise of the paper is that it would be possible to recognize more objects if the results from differing methods were combined. The combination is not only to widen the domain of discourse of objects to be reco... View full abstract»

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  • Adaptive filtering using gradient morphology

    Publication Year: 1992, Page(s):240 - 243
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (516 KB)

    A method is presented to remove noise from images as a preprocessing step for segmentation. It is based on the analysis of the slope of the gradient profile in a moving window after sorting its elements. By classifying the slope segments, rules can be applied for smoothing. These rules can be adapted for edge preservation View full abstract»

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  • Thinning binary pictures by a labeling procedure

    Publication Year: 1992, Page(s):582 - 585
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    Demonstrates that a specific method for thinning binary pictures which was proposed by the authors can be formulated as a labeling process thus leading to an invertible result. This can be interpreted that the `form' of an object is retained under application of the method View full abstract»

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  • A new chromatic edge detector used for color image segmentation

    Publication Year: 1992, Page(s):311 - 314
    Cited by:  Papers (10)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (372 KB)

    A method for segmenting colored images based on a new chromatic edge detector which permits multiscale contour detection. Good results are obtained with Gaussian and exponential noises View full abstract»

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  • Task-directed evaluation of image segmentation methods

    Publication Year: 1992, Page(s):219 - 222
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    In the image processing literature many methods to segment 2D and 3D images have been presented. However, relatively little effort has been spent on the validation of the results of these methods. The goal of the paper is to explore a validation methodology that is based on developing a task-directed quality norm that can be used as a constraint in cost analysis. In this methodology a segmentation... View full abstract»

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  • Relaxational refinement of intensity ridges

    Publication Year: 1992, Page(s):759 - 763
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (548 KB)

    A frequent goal in the early processing of images is the location of step discontinuities of intensity. However, in certain image domains the important features are present not as steps but as narrow intensity extrema, or ridges. As with step-edge detection, the raw ridge information can be characterised using specialised filters. Subsequent postprocessing must then be performed to extract consist... View full abstract»

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  • Compensation of motion blur in binary images

    Publication Year: 1992, Page(s):561 - 564
    Cited by:  Papers (1)  |  Patents (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (268 KB)

    Image processing is used very often for industrial applications. The most common input devices are CCD-cameras. Blurring in the image can arise from moving and swinging objects. This motion blur should be compensated for estimation of geometrical quantities. An interrelation for the shape of opposite edges in the image is used for the reconstruction of the binary image. In many cases a simple thre... View full abstract»

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  • An orientation and resolution independent texture classifier in segmentation of images of unknown rotation and scale

    Publication Year: 1992, Page(s):49 - 52
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    Describes an orientation and resolution insensitive texture classifier for demarcating regions of common texture within a rotated and/or scaled image. The algorithm involves a mask `tuning' process performed over equal size pure texture samples in the multi-orientation and multi-scale data set via a two-dimensional linked-list. The development of a guided random search approach for parameter optim... View full abstract»

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  • Hierarchical symmetry

    Publication Year: 1992, Page(s):9 - 12
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (364 KB)

    The authors view symmetry as a continuous feature and dependent on resolution. Combining a continuous symmetry measure (CSM) with a multiresolution scheme, the authors present a method that hierarchically detects symmetric and almost symmetric patterns. Evaluation of symmetry at low frequencies guides the process to find the symmetry at higher frequencies View full abstract»

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