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
  • A robust registration technique for multi-sensor images

    Publication Year: 1998, Page(s):87 - 90
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (552 KB)

    This paper describes an improved technique to register multi-sensor images by segmenting the images by adaptive clustering prior to performing preprocessing and cepstrum operation to determine the translational displacement. The difficulty in registering multi sensor images lies in the fact that the images of the same scene acquired by different sensors often appear different in detailed structure... 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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  • Hierarchical classification of SAR data using a Markov random field model

    Publication Year: 1998, Page(s):81 - 86
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1152 KB)

    A general framework is presented for classifying coastal environments using synthetic aperture radar (SAR) data. This framework addresses two main issues associated with the accurate classification of SAR data: 1) the variability in radar backscatter of a given pixel caused by the presence of speckle in the imagery and 2) the characteristic decrease in intensity as a function of incidence angle. T... View full abstract»

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  • Projected mean curvature smoothing for vector-valued imagery

    Publication Year: 1998, Page(s):121 - 126
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (996 KB)

    In this note, we formulate a general modified mean curvature based equation for image smoothing and enhancement. The key idea is to consider the image as a graph in some Rn, and apply a mean curvature type motion to the graph. We consider some special cases relevant to greyscale and color images 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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  • Multi-resolution vegetation classification along lower Rio Grande

    Publication Year: 1998, Page(s):75 - 80
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (616 KB)

    We present a quasi-wavelet based approach for multiresolution unsupervised and supervised vegetation classification of videography imagery. Due to certain limitations of traditional wavelet decomposition, we investigate a new quasi-wavelet decomposition to generate an alternative feature space for vegetation classification. Most existing wavelet-based classification approaches only consider the in... 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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  • 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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  • Object recognition: obtaining 2-D reconstructions from color edges

    Publication Year: 1998, Page(s):192 - 197
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    This article presents a complete hybrid object recognition system for three-dimensional objects using characteristic views (ChVs). High-quality 2-D reconstructions have to be generated from intensity or color data, respectively, to integrate the ChV representation method into a recognition system. First, we present an approach for obtaining edges and gradient information from color images. Second,... 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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  • Automated segmentation of surface soil moisture from Landsat TM data

    Publication Year: 1998, Page(s):70 - 74
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (716 KB)

    This study demonstrates a method for satellite remote sensing of surface soil moisture and the automated segmentation of the acquired imagery. The remote sensing method exploits the relationship between surface radiant temperature, vegetation cover, and surface soil moisture. The segmentation process employs a watershed algorithm applied within a morphological image pyramid. This multi-resolution ... 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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  • 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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  • 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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  • 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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  • Document segmentation using texture variance and low resolution images

    Publication Year: 1998, Page(s):164 - 167
    Cited by:  Papers (6)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    This paper describes a document segmentation method based on segmentation by texture using low resolution gray level images. The method is derived from the human vision perception theory. The concepts used from this theory are, global to local processing and low resolution information. If a document is viewed at a certain distance far from a person, the person sees a blurred image of the document,... View full abstract»

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  • Segmentation strategies with multiple analysis for an SMD object recognition system

    Publication Year: 1998, Page(s):59 - 64
    Cited by:  Papers (1)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    We present two segmentation strategies that use multiple analysis for the preprocessing stage of an object recognition system to detect the presence of surface mounted devices (SMD) on printed circuit boards. This work concentrates only on the preprocessing stage and simple segmentation algorithms for fast real-time implementation. The system uses two images of the same scene, with top and side il... View full abstract»

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  • Projection-based methods for hyperspectral image fraction estimation

    Publication Year: 1998, Page(s):244 - 249
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (456 KB)

    In this paper, we investigate the issues that arise with the use of large spectral libraries in practical applications of fraction estimation in hyperspectral imaging. We then present a new technique for fraction estimation based on the method of successive projections onto convex sets. Results are presented that demonstrate the ability of this technique to recover information that cannot be recov... View full abstract»

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  • Microcalcification cluster detection in digitized mammograms using multiscale techniques

    Publication Year: 1998, Page(s):23 - 28
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (824 KB)

    The introduction of multiscale techniques to signal and image processing has provided a new tool to create innovative methods for solving problems in the areas of data compression, signal analysis, and noise removal. Although these techniques are popular and used extensively in research and in engineering applications, their use in signature detection and classification is still an area open to ex... View full abstract»

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  • Visual perception tools for natural interaction - a gaze capture and tracking system

    Publication Year: 1998, Page(s):91 - 96
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (844 KB)

    In this paper we present a vision system with the aim of building a perceptual tool in order to make machines aware of humans allowing natural interaction in human-machine communication. The system must satisfy interaction constraints and be non-intrusive. Such a real-time camera-based system is designed for gaze tracking from an image sequence of a human in front of a machine. Therefore we use a ... View full abstract»

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  • Wideband frequency excursions in computed AM-FM image models

    Publication Year: 1998, Page(s):211 - 216
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (780 KB)

    We examine two paradigms for computing multicomponent AM-FM image models. In channelized components analysis, estimates for one AM-FM component are extracted from each channel of a multiband filterbank. Tracked multi-component analysis represents an image using fewer components by tracking the estimated modulating functions of each component across the filter bank channels. While both approaches w... View full abstract»

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  • Systolic algorithm for processing RLE images

    Publication Year: 1998, Page(s):127 - 131
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (388 KB)

    Image difference operation is commonly used in on-line automated printed circuit board (PCB) inspection systems as well as many other image processing applications. In this paper, we describe a new systolic algorithm and its system architecture which computes image differences in run-length encoded (RLE) format. The efficiency of this operation greatly affects the overall performance of the inspec... View full abstract»

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