1998 IEEE Southwest Symposium on Image Analysis and Interpretation (Cat. No.98EX165)

5-7 April 1998

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  • 1998 IEEE Southwest Symposium on Image Analysis and Interpretation (Cat. No.98EX165)

    Publication Year: 1998
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    Freely Available from IEEE
  • Color recognition with a camera: a supervised algorithm for classification

    Publication Year: 1998, Page(s):198 - 204
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (557 KB)

    This paper presents a color recognition algorithm using neuronal techniques, applied to the characterization of thermal paints. The color of such a coating changes with temperature, allowing temperature maps to be established on gas turbine engine components for instance. After a formulation of the classification algorithm, performances are evaluated on a thermal paint samples set. The influence o... View full abstract»

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  • Author index

    Publication Year: 1998, Page(s): 263
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    Freely Available from IEEE
  • Local colour image segmentation using singular value decomposition

    Publication Year: 1998, Page(s):148 - 153
    Cited by:  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (612 KB)

    A method was developed to segment images of complex scenes based on color content. The output of an interest operator provides focus toward regions within an image to be sampled for color content. Statistics for each data set sampled are used to cluster and estimate bounded regions within a transformed color space. Each region respectively represents a specific set. Mappings to transformed regions... View full abstract»

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  • Canonical space representation for recognizing humans by gait and face

    Publication Year: 1998, Page(s):180 - 185
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (512 KB)

    Eigenspace transformation (EST) based on principal component analysis has been demonstrated to be a potent metric in automatic face recognition and gait analysis, but without using data analysis to increase classification capability. We propose a new approach which combines canonical space transformation (CST) based on canonical analysis, with eigenspace transformation. This method can be used to ... View full abstract»

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  • Color image segmentation using multi-scale clustering

    Publication Year: 1998, Page(s):142 - 147
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (540 KB)

    The use of clustering in color image segmentation poses two distinct problems: (a) equal distances throughout a color space may not be perceived equally by the human visual system, and (b) the number of color clusters must be predetermined. This paper describes a color clustering method that resolves these problems. The first problem is addressed by operating in the nonlinear, geodesic chromaticit... View full abstract»

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  • Connected skeletons from 3D distance transforms

    Publication Year: 1998, Page(s):174 - 179
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (468 KB)

    An algorithm for generating connected skeletons of binary regions in volumetric images is presented. The method is based on a 3D distance transformation which may be computed in two passes through the input image voxels. We introduce the concept of rings and satellites for the identification of 3D saddle points in the distance transformed image which are used to ensure connectivity in the skeleton View full abstract»

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  • VIMOS: a video mosaic for spatio-temporal representation of visual information

    Publication Year: 1998, Page(s):6 - 11
    Cited by:  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (736 KB)

    The capability of extracting critical information from a live video signal and presenting it to end-users in an easy-to-grasp form is essential in many application domains, including GIS, intelligence, surveillance, and manufacturing. We outline on the development of methods and algorithms that are necessary for real-time analysis of video data, both in compressed or uncompressed domains, the gene... View full abstract»

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  • Wavelet-based PCA for human face recognition

    Publication Year: 1998, Page(s):223 - 228
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (512 KB)

    This paper addresses the speed and accuracy problems in human face recognition. The wavelet transform is adopted to decompose an image and a particular frequency band is selected for principal component analysis (PCA) for face recognition. Experimental results show that the proposed method is better than the original PCA method in terms of both speed and accuracy View full abstract»

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  • The moires of circles

    Publication Year: 1998, Page(s):115 - 120
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (796 KB)

    This paper deals with the moire effects that are observed when we draw, on a computer screen, the family of all the concentric circles of integer radius less or equal to R with R efficiently large. The goal of this article is to give an explanation of the phenomenon using the fact that the circles that are drawn on a screen are not real ones but “discrete ones” View full abstract»

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  • Morphological pyramids for multiscale edge detection

    Publication Year: 1998, Page(s):137 - 141
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (728 KB)

    In this paper, we present an edge detector that is based on a morphological pyramid (MP) structure. The algorithm utilizes a multiresolution pyramidal structure created by successive morphological filtering and subsampling of the original image. The boundaries detected at coarse scale representations of the morphological pyramid (MP) are used to guide the detection of discontinuities at higher res... View full abstract»

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  • Image reconstruction using the Viterbi algorithm

    Publication Year: 1998, Page(s):160 - 163
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (424 KB)

    Many systems in widespread use concentrate on the imaging of binary objects, e.g., the archival storage of text documents on microfilm or the facsimile transmission of text. Due to the imperfect nature of such systems, the binary image is unavoidably corrupted by blur and noise to form a grey-scale image. We present a technique to reverse this degradation which maps the binary object reconstructio... View full abstract»

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  • Convex projections restoration of Hadamard naturalness-preserving transform coded images

    Publication Year: 1998, Page(s):18 - 22
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (652 KB)

    This paper investigates an image coding system using the Hadamard naturalness-preserving transform (HNPT). It focuses both on the encoding and the decoding processes. Symmetric Lloyd-Max quantizers are designed to encode the HNPT coefficients. The theory of projections onto convex sets (POCS) is used as a basis for the design of an iterative reconstruction algorithm. A constraint set is defined th... View full abstract»

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  • Handwritten digit recognition using combination of neural network classifiers

    Publication Year: 1998, Page(s):168 - 173
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (484 KB)

    A new classification scheme for handwritten digit recognition is proposed. The method is based on combining the decisions of two multilayer perceptron (MLP) artificial neural network classifiers operating on two different feature types. The first feature set is defined on the pseudo Zernike moments of the image whereas the second feature type is derived from the shadow code of the image using a ne... View full abstract»

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  • Removal of image defocus and motion blur effects with a nonlinear interpolative vector quantizer

    Publication Year: 1998, Page(s):1 - 5
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1424 KB)

    In this paper, results are presented which demonstrate the removal of image defocus and motion blur effects using an algorithm based on nonlinear interpolative vector quantization (NLIVQ). The algorithm is trained on original and diffraction-limited image pairs which are representative of the class of images of interest. The discrete cosine transform is used in the code-book design process to cont... View full abstract»

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  • Adaptive reconstruction using multiple views

    Publication Year: 1998, Page(s):47 - 52
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (816 KB)

    This paper introduces a novel algorithm for extracting the optical flow obtained from a translating camera in a static scene. Occlusion between objects is incorporated as a natural component in a scene reconstruction strategy by first evaluating and reconstructing the foreground and then excluding its influence on the partly occluded objects behind View full abstract»

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  • Practical implementation of multirate convolution for multiresolution image processing

    Publication Year: 1998, Page(s):217 - 222
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (652 KB)

    This paper describes key issues associated with the computation of undecimated multiresolution signal decompositions. An effective solution is obtained by a general-purpose convolution programming model that automatically accounts for filter origin displacement and the sparse nature of upsampled filters. The handling of image boundaries during convolution is also discussed in detail View full abstract»

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  • High-scale edge study for segmentation and contour closing in textured or noisy images

    Publication Year: 1998, Page(s):109 - 114
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (740 KB)

    When they are used in a high-scale way, the edge detectors based on Canny's approach provide edges which are well localized in non-noisy and non-textured areas of the image, but which are too numerous in other areas. The aim of this paper is to study these high-scale edges, especially their local density. High-scale edges are studied by the way of features which characterize various situations suc... View full abstract»

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  • Protein structure determination using 3-D grayscale skeletonization

    Publication Year: 1998, Page(s):132 - 136
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (308 KB)

    This paper describes ongoing work on an algorithm for performing 3-D grayscale skeletonization. The algorithm makes use of a variation of the gray weighted distance transform without performing any prior thresholding. It is being developed as a tool for structural biologists to utilize in determining the structure of large protein molecules View full abstract»

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  • Compression degradation metrics for analysis of consistency in microcalcification detection

    Publication Year: 1998, Page(s):35 - 40
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (708 KB)

    The authors motivate, define and illustrate the behavior of four scalar metrics which measure the degree to which microcalcification (μuCa++) detection is affected by lossy compression distortion. The JPEG method is used at various compression rates determined by a single parameter. The authors' metrics are specifically targeted to measure the degree of invariance of the processing to the prese... View full abstract»

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  • Use of diffusion techniques for edge preservation for fractal coders

    Publication Year: 1998, Page(s):65 - 69
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (588 KB)

    Based on the correlation of self-similarity, fractal coders compress digital images by relating image blocks pairs at different scales in the images. The pairing of large to small block sizes dictates the compression ratio and the quality of the reconstructed image. Inaccurate fractal mappings at large image block sizes increase losses of edge information, discontinuities at boundaries and blockin... View full abstract»

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  • Texture defect detection using subband domain co-occurrence matrices

    Publication Year: 1998, Page(s):205 - 210
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (708 KB)

    In this paper, a new defect detection algorithm for textured images is presented. The algorithm is based on the subband decomposition of gray level images through wavelet filters and extraction of the co-occurrence features from the subband images. Detection of defects within the inspected texture is performed by partitioning the textured image into non-overlapping subwindows and classifying each ... View full abstract»

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  • Lexicodes in the space of foot patterns for image classification

    Publication Year: 1998, Page(s):97 - 102
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (532 KB)

    In this paper we extend work presented in Ashlock and Davidson (1997) on the automatic classification of textures with foot patterns. We begin by verifying that a technique suggested in the earlier research permits us to distinguish between textures which the original technique could not classify. We then define a metric on the space of the foot patterns and construct lexicodes of the foot pattern... View full abstract»

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  • Modified mean curvature motion for multispectral anisotropic diffusion

    Publication Year: 1998, Page(s):154 - 159
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1376 KB)

    This paper introduces a new anisotropic diffusion algorithm for enhancing and segmenting multispectral image data. The algorithm is based upon mean curvature motion. Using a modified image gradient computation, the diffusion method is further improved by allowing the control of feature scale, and the sensitivity to heavy-tailed noise is eliminated. For comparison, a vector distance dissimilarity m... View full abstract»

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  • Probabilistic matching for face recognition

    Publication Year: 1998, Page(s):186 - 191
    Cited by:  Papers (4)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (684 KB)

    We propose a new technique for direct visual matching of images for the purposes of face recognition, database search and image retrieval. Specifically, we argue in favor of a probabilistic measure of similarity, in contrast to simpler methods which are based on standard L 2 norms (e.g., template matching) or subspace-restricted norms (e.g., eigenspace matching). The proposed similarity... View full abstract»

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