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Proceedings 10th International Conference on Image Analysis and Processing

27-29 Sept. 1999

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  • Proceedings 10th International Conference on Image Analysis and Processing

    Publication Year: 1999
    Request permission for commercial reuse | PDF file iconPDF (680 KB)
    Freely Available from IEEE
  • Machine vision for medical image analysis and virtual surgery

    Publication Year: 1999
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (87 KB)

    Summary form only given. Medical image analysis and surgery simulation are young research fields with enormous potential but many unsolved and challenging research problems. The author presents a list of such problems including rigid and non-rigid registration, motion analysis and soft-tissue modeling, and discusses some recent advances and perspectives. The author illustrates current projects inv... View full abstract»

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  • A new evolutionary learning model for handwritten character prototyping

    Publication Year: 1999, Page(s):830 - 835
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (81 KB)

    The work reported in this paper is aimed at exploiting evolutionary learning algorithms for producing the set of prototypes to be used by a handwriting recognition system. In this paper we propose a new evolutionary learning model that combines the power of search of a classical evolutionary algorithm, namely a breeder genetic algorithm, with a novel mechanism for implementing the interaction betw... View full abstract»

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  • Extraction of bibliography information based on image of book cover

    Publication Year: 1999, Page(s):921 - 926
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (282 KB)

    This paper describes a new system for extracting and classifying bibliography regions from the color image of a book cover. The system consists of three major components: preprocessing, color space segmentation, and test region extraction and classification. Preprocessing extracts the edge lines of the book, gets the basic information, and geometrically corrects and segments the input image, into ... View full abstract»

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  • Index of authors

    Publication Year: 1999, Page(s):1227 - 1232
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    Freely Available from IEEE
  • Distributed output encoding for multi-class pattern recognition

    Publication Year: 1999, Page(s):229 - 234
    Cited by:  Papers (3)  |  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (56 KB)

    Fingerspelling recognition and handshape recognition are two examples of real-world, multi-class recognition problems consisting of 26 and 78 classes respectively. While it is theoretically possible to solve any multi-class problem with a single “smart” classifier the complexity of such a classifier is usually prohibitively high. This paper looks at several approaches to solving a nume... View full abstract»

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  • Building meaningful edge maps from range images

    Publication Year: 1999, Page(s):227 - 228
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (460 KB)

    Edge detection in range images provides rich information about the scene being observed. Many researchers have been taking advantage of this information to improve image segmentation by integrating edge detection with other segmentation techniques. This paper presents a methodology to perform edge detection in range images in order to provide a reliable and meaningful edge map, which helps to guid... View full abstract»

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  • Modified BPT giving exact decoder convergence

    Publication Year: 1999, Page(s):221 - 226
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (108 KB)

    This paper presents a modification of the Bath fractal transform, which generates the image representation after an exact number of iterations. The number of iterations is derived from the size of the partitions of the image. The coefficients of transforms of the modified BFT are not bounded. The modified BFT creates a minimal representation of an image block with 6 coefficients and one starting p... View full abstract»

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  • Improved low complexity fully parallel thinning algorithm

    Publication Year: 1999, Page(s):215 - 220
    Cited by:  Papers (6)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (48 KB)

    A fully parallel iterative thinning algorithm called MB2 is presented. It favourably competes with the best known algorithms regarding homotopy, mediality, thickness, rotation invariance and noise immunity, while featuring a speed improvement by a factor of two or more owing to a smaller number of operations to perform. MB2 is grounded on a simple physics-based thinning principle that conveys both... View full abstract»

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  • The distance transform algorithm on a two-processor computer

    Publication Year: 1999, Page(s):114 - 118
    Cited by:  Papers (1)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (44 KB)

    This paper contains the description of the implementation of the weighted distance transform for digital image analysis on a two-processor shared memory computer. The computer is a SMP (symmetric multiprocessing) computer and the algorithm is implemented using POSIX threads View full abstract»

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  • Filtering and prediction techniques in radar tracking of vehicles for assisted driving

    Publication Year: 1999, Page(s):1148 - 1151
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (76 KB)

    An advanced system of driving assistance is considered, which is based on a network of radar (and, in some situations, infrared) sensors alongside the motorway. The system is capable of tracking each single vehicle in the coverage area individually and to transmit the picture of vehicle positions and velocities to a control center in real time. The latter processes the received data, in order to d... View full abstract»

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  • Cell segmentation with median filter and mathematical morphology operation

    Publication Year: 1999, Page(s):1043 - 1046
    Cited by:  Papers (54)  |  Patents (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (104 KB)

    This paper describes a part of current research work on an automated cell tracking (ACT) project with the aim of tracking the movement of representative cells in order to determine the activity of the cell once certain medical substances have been injected. A major requirement for this project is an efficient method to segment cell images. This work shows that the combination methods of the median... View full abstract»

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  • Texture analysis using morphological pattern spectrum and optimization of structuring elements

    Publication Year: 1999, Page(s):209 - 214
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (92 KB)

    This paper proposes a novel method of texture analysis based on mathematical morphology. The pattern spectrum is a mathematical morphological method to describe size distributions of objects contained in an image. Our method is based on the idea of optimizing the shape of structuring elements to fit the shape of elementary particles that form a texture. Since the variance of size distribution desc... View full abstract»

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  • ICM method for multi-level thresholding using maximum entropy criterion

    Publication Year: 1999, Page(s):108 - 113
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (92 KB)

    The maximum entropy approach is one of the most important threshold selection methods. Many authors avoid the computationally prohibitive problem when the maximum entropy criterion is applied to multi-level threshold selection. This paper deals with this problem using the iterated conditional modes (ICM) method. Experiments show ICM can get satisfactory if not optimal results using our initializat... View full abstract»

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  • Monitoring motorway infrastructures for detection of dangerous events

    Publication Year: 1999, Page(s):1144 - 1147
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (136 KB)

    In this paper, a visual-based surveillance system for monitoring motorway infrastructures is presented. The system receives in input a sequence of colour images and makes out an interpretation of the observed scene according to a set of possible events previously defined. The considered events are divided into four classes and range from normal situations (any object is present on the surveilled o... View full abstract»

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  • Fast search for entropy-constrained VQ

    Publication Year: 1999, Page(s):1038 - 1042
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (84 KB)

    The design of fast nearest-neighbor algorithms is a crucial issue in vector quantizers using unstructured codebooks. This paper presents a fast linear search algorithm for entropy-constrained vector quantizers, which use a modified distortion measure taking into account the entropy of the output. It consists in an adaptation of previous methods designed for standard vector quantizers. New eliminat... View full abstract»

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  • Segmentation of X-ray CT images using stochastic templates

    Publication Year: 1999, Page(s):746 - 751
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (252 KB)

    X-ray computed tomography (CT), a non-invasive imaging technique, is being used increasingly in sheep breeding. Currently, considerable human intervention is needed to segment images into different tissues. This is undesirable because of its subjectivity and tediousness. We propose the use of deformable templates to automate the segmentation. A stochastic model has been constructed using a trainin... View full abstract»

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  • Fast spectral algorithms of invariants calculation

    Publication Year: 1999, Page(s):203 - 208
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (160 KB)

    The recognition of objects independent of their position, size and orientation is an important problem in pattern recognition. In this paper we propose a new fast algorithm of moment invariant computation, which needs almost no multiplications. We use modular arithmetic of the finite Galois field GF(Q) to map the geometrical moments calculation to a fast Fourier-Mellin-Galois transform, which redu... View full abstract»

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  • An anisotropic diffusion PDE for noise reduction and thin edge preservation

    Publication Year: 1999, Page(s):102 - 107
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (228 KB)

    In this paper, an image denoising operator defined by a nonlinear partial differential equation (PDE) is presented. Similar to the operators proposed by Perona, Malik and Catte et al., it can remove noise, enhance step-like edges and keep the locality of the edges. Its extra ability is to keep thin edges. The criterion for stopping time is also investigated. The new operator is capable of removing... View full abstract»

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  • Single camera multiplexing for multi-target tracking

    Publication Year: 1999, Page(s):1140 - 1143
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (52 KB)

    This paper considers the problem of designing a real-time surveillance system, equipped with a single camera on a pan/tilt platform, to track multiple moving targets within the camera's field of regard. The objective is to maintain motion trajectory information of as many of these targets as possible, and for as long as possible. Because the camera can only capture a fraction of the field of regar... View full abstract»

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  • Quality assessment of compressed cardiac MRI. Effect of lossy compression on computerized physiological parameters

    Publication Year: 1999, Page(s):1034 - 1037
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (100 KB)

    With the increasing number of medical imaging modalities, compressing digital medical images can facilitate their transmission and storage. This paper evaluates and compares two lossy compression methods: JPEG and wavelet, applied to the end diastolic phase slices of a cardiac MRI acquisition. First, the qualitative image quality was evaluated with clinical criteria and was performed by radiologis... View full abstract»

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  • Automatic classification of clustered microcalcifications by a multiple expert system

    Publication Year: 1999, Page(s):464 - 469
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (208 KB)

    Mammography is a non-invasive diagnostic technique largely used for early cancer detection in women's breasts. One of the main indicants of such disease is the presence of microcalcifications, appearing as small bright spots in the mammographic image. An automatic detection and recognition of malignant clusters of microcalcifications, although very useful for a mass screening of the female populat... View full abstract»

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  • A new deformable contour method

    Publication Year: 1999, Page(s):430 - 435
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (568 KB)

    In this paper, a new deformable contour method is presented and tested. The method incorporates several advantages and avoids the disadvantages of both the level set and the non-deterministic deformable contour methods. It takes the level set approach as a core procedure with an enhanced velocity control using a region growing-like function, and the introduction of the non-deterministic approach t... View full abstract»

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  • Location of the pupil-iris border in slit-lamp images of the cornea

    Publication Year: 1999, Page(s):740 - 745
    Cited by:  Papers (24)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    We present results for an active contour that finds the pupil-iris border in slit lamp images of the eye. Preprocessing involves producing a variance image from the original image and then locating the annulus, of a given size, which has the lowest mean variance. The centre of this annulus falls inside the pupil, giving a starting position for a discrete circular active contour (DCAC). The DCAC is... View full abstract»

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  • Non-linear scale-selection for image compression improvement obtained by perceptual distortion criteria

    Publication Year: 1999, Page(s):197 - 202
    Cited by:  Papers (1)  |  Patents (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1016 KB)

    The effect of linear and nonlinear diffusions prior to the Joint Photographic Experts Group (JPEG) standard baseline compression is analysed and compared. We shall show that anisotropic diffusion acts as an adaptive filtering that extracts and preserves the important visual information, and it will be shown how it can be used as a preprocessing method for compression artefact reduction. The select... View full abstract»

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