IEEE Computer Graphics and Applications

Issue 3 • May-June 1999

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Displaying Results 1 - 14 of 14
  • Apparatus for Digesting 3D Thoughts

    Publication Year: 1999, Page(s):4 - 5
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (794 KB)

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  • Imaging in Medical Education

    Publication Year: 1999, Page(s): 20
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (72 KB)

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  • Vector geometry for computer graphics

    Publication Year: 1999, Page(s):66 - 73
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (176 KB)

    Computer graphics and modeling rely on mathematical operations on points and vectors. The author advocates using vector geometric analysis to simplify required derivations. He presents the basic language and methods of vector geometric analysis and characterizes the situations favoring vector geometric versus coordinate based analysis. A set of C++ classes is developed which includes methods and d... View full abstract»

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  • Digital teaching files in diagnostic imaging

    Publication Year: 1999, Page(s):56 - 65
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1072 KB)

    An architecture for digital teaching of radiology targets the next generation of network based education in diagnostic imaging. We developed applications of this system in UCSF hospitals (San Francisco, USA). The networked digital teaching file for medical imaging presented here builds on the availability of existing clinical information infrastructure in hospitals, such as PACS and RIS, and the r... View full abstract»

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  • Extracting and representing the cortical sulci

    Publication Year: 1999, Page(s):49 - 55
    Cited by:  Papers (24)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1460 KB)

    Cortical sulci are convoluted regions between cortical folds deeply embedded in the surface of the brain. Because of their significant characteristics, their functional separation of distinct brain regions, and their natural topological partition of anatomy, sulci serve as a basis for structural analysis of the brain. Current sulcal modeling techniques depend on manual interpretation. We propose a... View full abstract»

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  • Imaging and visualization in medical education

    Publication Year: 1999, Page(s):21 - 31
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1092 KB)

    Almost every imaging modality and type of visualization finds a place in the teaching of medicine. These include photographs of patients, dissected anatomy, and pathology tissue; videos of abnormal patient behavior; radiologic imagery such as computed-tomography scans; and images of isotope emissions in nuclear medicine. We also use synthetic or simulated images, such as animations of embryo devel... View full abstract»

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  • Design of an anatomy information system

    Publication Year: 1999, Page(s):38 - 48
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1244 KB)

    The Digital Anatomist Project aims to “put anatomy on a computer.” Both the content and the structure-based information system should have wide applicability outside the initial implementation. We explain the nature of anatomical information and discuss the design of a system to organize and access it. Example applications show the potential for reusing the same information in contexts... View full abstract»

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  • The Java 3D API and virtual reality

    Publication Year: 1999, Page(s):12 - 15
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (320 KB)

    Java programmers can quickly and easily define graphics programs using Java 3D's scene graph classes. An expanded view model lets applications seamlessly operate in a variety of single- and multiple-display, nonhead-tracked and head-tracked, display environments. This view model relies on the flexible InputDevice interface that Java 3D provides to remove most of the vagaries of hardware trackers View full abstract»

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  • Simulating oriental black-ink painting

    Publication Year: 1999, Page(s):74 - 81
    Cited by:  Papers (37)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1224 KB)

    “Soft” brushes respond elastically to the force exerted by an artist against the paper. When modeled, they effectively simulate oriental black-ink painting, eliminating unnatural spline curve editing. The interactive modeling algorithm for soft brushes lets users resize brushes and choose a particular color, texture, or type of bristles. With this unique approach, a user produces brush... View full abstract»

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  • Visualizing and segmenting large volumetric data sets

    Publication Year: 1999, Page(s):32 - 37
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1108 KB)

    Current systems for segmenting and visualizing volumetric data sets characteristically require the user to possess a technical sophistication in volume visualization techniques, thus restricting the potential audience of users. As large volumetric data sets become more common, segmentation and visualization tools need to deemphasize the technical aspects of visualization and let users exploit thei... View full abstract»

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  • Virtual recovery of excavated relics

    Publication Year: 1999, Page(s):6 - 11
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (788 KB)

    Bringing computer graphics and virtual reality technologies to traditional archaeology raises surprising possibilities. First, it permits exploring, assembling, and visualizing relics without disturbing their physical location or damaging specimens. Second, it brings a “what if” scenario to the task of reassembling fragments, which would otherwise involve applying permanent adhesives, ... View full abstract»

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  • Visualizing large telecommunication data sets

    Publication Year: 1999, Page(s):16 - 19
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1332 KB)

    Global telecommunication services create an enormous volume of real time data. Long distance voice networks, for example, can complete more than 250 million calls a day; wide area data networks can support many hundreds of thousands of virtual circuits and millions of Internet protocol (IP) flows and Web server sessions. Unlike terabyte databases, which typically contain images or multimedia strea... View full abstract»

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  • An open and shut case [computer graphics]

    Publication Year: 1999, Page(s):82 - 92
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (8600 KB)

    You press the button on your camera, the shutter opens, the film is exposed, the shutter closes, and you have a picture. If anything moved, including you, the image will show motion blur. When we create synthetic images with computer graphics, we have to account for motion blur for three reasons. First, we're used to it from physical motion pictures. Second, without motion blur a film can suffer f... View full abstract»

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  • Inferring transforms [computer graphics]

    Publication Year: 1999, Page(s):93 - 98
    Cited by:  Papers (1)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (148 KB)

    In simple two-dimensional texture mapping you take a 2D image and render it on the screen after some transformation or distortion. To accomplish this you will need to take each [X, Y] location on the screen and calculate a [U, V] texture coordinate to place there. A particularly common transformation is: U=(aX+bY+c)/(gX+hY+j), V=(dX+eY+f)/(gX+hY+j). By picking the proper values for the coefficient... View full abstract»

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Aims & Scope

IEEE CG&A bridges the theory and practice of computer graphics. From specific algorithms to full system implementations, CG&A offers a unique combination of peer-reviewed feature articles and informal departments, including product announcements.

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Meet Our Editors

Editor-in-Chief
L. Miguel Encarnação
The QED Group