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Proceedings 30th Applied Imagery Pattern Recognition Workshop (AIPR 2001). Analysis and Understanding of Time Varying Imagery

10-12 Oct. 2001

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  • Proceedings 30th Applied Imagery Pattern Recognition Workshop (AIPR 2001). Analysis and Understanding of Time Varying Imagery

    Publication Year: 2001
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    Freely Available from IEEE
  • Author index

    Publication Year: 2001, Page(s): 201
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    Freely Available from IEEE
  • Evaluating the benefits of assisted target recognition

    Publication Year: 2001, Page(s):39 - 45
    Cited by:  Papers (3)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (804 KB) | HTML iconHTML

    Image exploitation systems that employ automatic target recognition (ATR) technology generally require that a human-in-the-loop validates the ATR results, i.e. assisted target recognition. To evaluate the benefits of assisted target recognition, one must first understand the human's interaction with the ATR algorithms plus the many factors that influence the performance of both the imagery analyst... View full abstract»

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  • Directional edge registration for temporal chest image subtraction

    Publication Year: 2001, Page(s):32 - 36
    Cited by:  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1045 KB) | HTML iconHTML

    We used a directional filtering technique to accurately register the ribs on temporal chest radiographs. Rib registration was the primary technical objective. In order to accurately extract the ribs, we developed a directional edge function that used rotating kernels through a dynamic search technique to extract rib edges of varying contrast. A directionally-weighted operator with a phase-contrast... View full abstract»

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  • Multi-modal fusion for video understanding

    Publication Year: 2001, Page(s):103 - 108
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (750 KB) | HTML iconHTML

    The exploitation of semantic information in computer vision problems can be difficult because of the large difference in representations and levels of knowledge. Image analysis is formulated in terms of low-level features describing image structure and intensity, while high-level knowledge such as purpose and common sense are encoded in abstract, non-geometric representations. In this work we atte... View full abstract»

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  • Mixture of principal axes registration for change analysis in computer-aided diagnosis

    Publication Year: 2001, Page(s):25 - 31
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (657 KB) | HTML iconHTML

    Non-rigid image registration is a prerequisite for many medical image analysis applications, such as image fusion of multi-modality images and quantitative change analysis of a temporal sequence in computer-aided diagnosis. By establishing the point correspondence of the extracted feature points, it is possible to recover the deformation using nonlinear interpolation methods such as the thin-plate... View full abstract»

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  • Towards robust face recognition from video

    Publication Year: 2001, Page(s):94 - 100
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (675 KB) | HTML iconHTML

    A novel, template-based method for face recognition is presented. The goals of the proposed method are to integrate multiple observations for improved robustness and to provide auxiliary confidence data for subsequent use in an automated video surveillance system. The proposed framework consists of a parallel system of classifiers, referred to as observers, where each observer is trained on one fa... View full abstract»

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  • The surgical CAD/CAM paradigm and an implementation for robotically-assisted percutaneous local therapy

    Publication Year: 2001, Page(s):3 - 8
    Cited by:  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1045 KB) | HTML iconHTML

    Computer-integrated surgery represents a growing segment of our national healthcare system. These systems transform preoperative images and other information into models of individual patients, assist clinicians in developing an optimized interventional plan, register this preoperative data to the actual patient in the operating room, and then use a variety of means, such as robots and image overl... View full abstract»

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  • Image fusion or 4D cardiac CTA and MR images

    Publication Year: 2001, Page(s):21 - 24
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB) | HTML iconHTML

    Various imaging techniques can be used to evaluate coronary artery disease and cardiac function. However, no single imaging modality provides extensive information on both. The goal of this research is to develop a method for combining the coronary vasculature obtained from computed tomographic angiography (CTA) data with the myocardial functional information obtained from dynamic magnetic resonan... View full abstract»

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  • PUPILS-enabling a dialogue between the machine and the brain

    Publication Year: 2001, Page(s):87 - 93
    Cited by:  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (821 KB) | HTML iconHTML

    The human eye has been called the window to the soul. One component of the eye, the pupil, is considered by some psychologists to be the single involuntary indicator of cognitive activity in the human brain. Much research is currently directed toward eye tracking for the purpose of determining the focus of a subject's attention. This information is then used in various HCI applications (e.g., to o... View full abstract»

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  • Graph-based matching of occluded hand gestures

    Publication Year: 2001, Page(s):67 - 73
    Cited by:  Papers (1)  |  Patents (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (662 KB) | HTML iconHTML

    Occlusion is an unavoidable subject in most machine vision areas. Recognition of partially-occluded hand gestures is an important problem. In this paper a new algorithm is proposed for the recognition of occluded and non-occluded hand gestures based on matching the Graphs of gestures in an eigenspace View full abstract»

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  • A recursive Otsu-Iris filter technique for high-speed detection of lumen region from endoscopic images

    Publication Year: 2001, Page(s):182 - 186
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (532 KB) | HTML iconHTML

    In this paper, a hardware efficient technique to segment the lumen region from endoscopic images is presented. It is based on applying the combined Otsu-Iris filter operations recursively. The proposed technique applies the Otsu's procedure recursively to obtain a coarse region of interest (ROI), which is then subjected to an Iris filter operation so that a smaller enhanced region can be identifie... View full abstract»

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  • The evaluation of computer-aided diagnosis systems: an FDA perspective

    Publication Year: 2001, Page(s):17 - 20
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (589 KB) | HTML iconHTML

    Computer-aided diagnosis (CADx) systems have begun a successful transition from academic research to commercial implementation. FDA (Food & Drug Administration) approval of CADx for PAP (Peroxidase-Antiperoxidase) smear reading in 1995 and for breast cancer detection in 1998 were major milestones in this process. As agency experience with these devices has increased, a consensus is emerging co... View full abstract»

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  • A conversational paradigm for multimodal human interaction

    Publication Year: 2001, Page(s):80 - 86
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (769 KB) | HTML iconHTML

    We present an alternative to the manipulative and semaphoric gesture recognition paradigms. Human multimodal communicative behaviors form a tightly integrated whole. We present a paradigm multimodal analysis in natural discourse based on a feature decompositive psycholinguistically derived model that permits us to access the underlying structure and intent of multimodal communicative discourse. We... View full abstract»

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  • An adaptive technique for the extraction of object region and boundary from images with complex environment

    Publication Year: 2001, Page(s):194 - 199
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (679 KB) | HTML iconHTML

    A faster and accurate method for the extraction of object region and boundary from images with complex background environment is presented in this paper. The segmentation procedure begins with the computation of an optimum threshold to distinguish the darker regions in the image. It is an automatic thresholding algorithm that would work under all lighting conditions, where prefixing of threshold v... View full abstract»

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  • Evaluation of ATR algorithms employing motion imagery

    Publication Year: 2001, Page(s):57 - 63
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (747 KB) | HTML iconHTML

    Most Automated Target Recognition (ATR) algorithms developed for Intelligence, Surveillance, and Reconnaissance (ISR) missions operate on a single frame of still imagery to detect, recognize, and geolocate targets of interest. The introduction of digital motion imagery for ISR applications raises the need for automated tools to assist the image analyst (IA). Furthermore, the temporal information a... View full abstract»

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  • Scene and content analysis from multiple video streams

    Publication Year: 2001, Page(s):119 - 125
    Cited by:  Papers (5)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (724 KB) | HTML iconHTML

    In this paper, we describe a framework for video analysis and a method to detect and understand the class of events we refer to as "split and merge events" from single or multiple video streams. We start with automatic detection of scene changes, including camera operations such as zoom, pan, tilts and scene cuts. For each new scene, camera calibration is performed, the scene geometry is estimated... View full abstract»

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  • A qualitative image reconstruction from an axial image sequence

    Publication Year: 2001, Page(s):175 - 181
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (601 KB) | HTML iconHTML

    This paper presents a method to process axial monocular image sequences for mobile robot obstacle detection. We do not aim to achieve a complete scene reconstruction, but only to evaluate the time to collision and surface orientation useful for robot obstacle avoidance. Using a planar facet representation we first calculate formally the velocity field generated by the camera motion. The apparent d... View full abstract»

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  • An ATR system using an integer based correlation algorithm in a time varying environment

    Publication Year: 2001, Page(s):46 - 50
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (626 KB) | HTML iconHTML

    In an electro-optical or IR tracking system, a correlation algorithm offers a robust tracking technique in a time-varying scenario. Described in this paper is an automatic target recognition (ATR) algorithm that employs an operator in the loop as an embedded tracking system. The described system combines morphological algorithms with an efficient integer-based correlation tracking algorithm. This ... View full abstract»

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  • Distributed multiuser visualization of time varying anatomical data

    Publication Year: 2001, Page(s):109 - 114
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (870 KB) | HTML iconHTML

    We describe a networked environment for navigating and visualizing 3-dimensional anatomical data with extensions for time varying volumes. The Duke Center for In Vivo Microscopy (CIVM) has been capturing volumetric data of mice using magnetic resonance microscopy. Current data sets are 5123 with 16 bit precision per voxel at an isotropic resolution of 50 microns. A new instrument will p... View full abstract»

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  • Analysis of time-varying images using 3D vascular models

    Publication Year: 2001, Page(s):9 - 14
    Cited by:  Papers (1)  |  Patents (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (936 KB) | HTML iconHTML

    A medical image traditionally represents a "snapshot" of a portion of the patient's anatomy at a particular moment in time. However, the appearance of image objects often varies between images taken at different times. Such changes may occur because of differences in the image acquisition techniques employed, because of shifts in the positions of organs, or because of development, progression, or ... View full abstract»

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  • A basic hand gesture control system for PC applications

    Publication Year: 2001, Page(s):74 - 79
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (622 KB) | HTML iconHTML

    We discuss the issues involved in controlling computer applications via gestures composed of both static symbols and dynamic motions. Each gesture is modeled from either static model information or a linear-in-parameters dynamic system. Recognition occurs in a real-time environment using a small amount of processing time and memory. We examine which gestures are appropriate, how the gestures can b... View full abstract»

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  • Face detection and eye location using a modified ALISA texture module

    Publication Year: 2001, Page(s):187 - 193
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (893 KB) | HTML iconHTML

    This paper presents an automatic method for face detection and eye location using a modified version of the ALISA Texture Module. ALISA (Adaptive Learning Image and Signal Analysis) is an adaptive classification engine based on collective learning systems theory. Using supervised training, the ALISA engine builds a set of multi-dimensional feature histograms that estimate the joint PDF of the feat... View full abstract»

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  • A multiresolution approach for video texture registration

    Publication Year: 2001, Page(s):126 - 128
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (355 KB) | HTML iconHTML

    Electro-optical imagery can have uniform characteristics that prevent it from being registered by conventional edge-based methods. Such uniform characteristics, if they have periodicity, can be exploited using multi-resolution texture extraction techniques. We first use a multi-resolution Markov model to represent electro-optical textures and apply an autoregressive statistical approach to find co... View full abstract»

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  • Suitability of synthetic imagery for ATR evaluation

    Publication Year: 2001, Page(s):51 - 56
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (707 KB) | HTML iconHTML

    There is a commonly held belief among many who participate in ATR development and evaluation that a lack of data (imagery from tactical sensors) is a significant obstacle in the production and thorough evaluation of high performance ATR systems. Recognizing that it may be too costly or even impossible to collect a sufficient quantity of real data to adequately represent all ATR mission scenarios o... View full abstract»

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