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Computer Graphics and Applications, IEEE

Issue 1 • Date Jan.-Feb. 2009

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Displaying Results 1 - 19 of 19
  • [Front cover]

    Page(s): c1
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  • Call for Papers

    Page(s): c2
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  • [Masthead]

    Page(s): 1
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  • Table of contents

    Page(s): 2 - 3
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  • Fun with Fractal Art

    Page(s): 4 - 5
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    Cover artist Janet Parke, who grew up with music, theater, and dance, discusses how she discovered fractal art quite by accident. View full abstract»

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  • Visual Exploration of the Vulcan CO₂ Data

    Page(s): 6 - 11
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    The problem of human-induced climate change has emerged as one of the grand challenges facing humanity. Advances in scientific understanding in the past 20 years have confirmed the fact of climate change and its likely acceleration, driven primarily by rising carbon dioxide (CO2) levels mostly from fossil-fuel combustion. We must reduce CO2 emissions to stabilize greenhouse gases and avoid further interference with the climate system. However, we currently have limited understanding of CO2 emissions at space- time scales that are meaningful for carbon-cycle science, climate-change research, decision making, mitigation, public understanding, industrial management, and carbon trading.1 Given the profound nature of the climate-change problem and the significant trading and infrastructural changes implied by national and international legislation, this limited understanding could cripple the advance of scientific understanding, optimal policy, corporate action, and public engagement. Visualization of the complex space-time dimensions of fossil-fuel emissions is a powerful means for exploring and understanding this dominant climate-change driver. We've developed a visualization system to help explore and understand CO2 emission data collected by the US Vulcan Project, a government-funded project to quantify North American fossil-fuel CO2 emissions at much finer space and time scales than have been achieved in the past. View full abstract»

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  • Data, Information, and Knowledge in Visualization

    Page(s): 12 - 19
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    In visualization, we use the terms data, information and knowledge extensively, often in an interrelated context. In many cases, they indicate different levels of abstraction, understanding, or truthfulness. For example, "visualization is concerned with exploring data and information," "the primary objective in data visualization is to gain insight into an information space," and "information visualization" is for "data mining and knowledge discovery." In other cases, these three terms indicate data types, for instance, as adjectives in noun phrases, such as data visualization, information visualization, and knowledge visualization. These examples suggest that data, information, and knowledge could serve as both the input and output of a visualization process, raising questions about their exact role in visualization. View full abstract»

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  • Generating 3D Building Models from Architectural Drawings: A Survey

    Page(s): 20 - 30
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    Automatically generating 3D building models from 2D architectural drawings has many useful applications in the architecture engineering and construction community. This survey of model generation from paper and CAD-based architectural drawings covers the common pipeline and compares various algorithms for each step of the process. View full abstract»

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  • Computer Society Information and advertiser index

    Page(s): 31
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  • Rendering Grass in Real Time with Dynamic Lighting

    Page(s): 32 - 41
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    The authors present a real-time grass rendering technique that works for large, arbitrary terrains with dynamic lighting, shadows, and a good parallax effect. A novel combination of geometry and lit volume slices provides accurate, per-pixel lighting. A fast grass-density management scheme allows the rendering of arbitrarily shaped patches of grass. View full abstract»

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  • oRGB: A Practical Opponent Color Space for Computer Graphics

    Page(s): 42 - 55
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    Designed for computer graphics, oRGB is a new color model based on opponent color theory. It works well for both HSV-style color selection and computational applications such as color transfer. oRGB also enables new applications such as a quantitative cool-to-warm metric, intuitive color manipulation and variations, and simple gamut mapping. View full abstract»

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  • Ubi-Pen: A Haptic Interface with Texture and Vibrotactile Display

    Page(s): 56 - 64
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    The Ubi-Pen is a pen-like haptic interface incorporating a compact tactile display and a vibrating module. It can represent tactile patterns and provide feedback with the click of a button. It's also applicable to combined force- and tactile-feedback display. View full abstract»

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  • IEEE Computer Society Career Center [advertisement]

    Page(s): 65
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  • Image-Space Subsurface Scattering for Interactive Rendering of Deformable Translucent Objects

    Page(s): 66 - 78
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    The authors present an algorithm for real-time realistic rendering of translucent materials such as marble, wax, and milk. Their method captures subsurface scattering effects while maintaining interactive frame rates. The main idea of this work is that it employs the dipole diffusion model with a splatting approach to evaluate the integral over the surface area for computing illumination due to multiple scattering. View full abstract»

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  • Tools and Products

    Page(s): 79 - 81
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  • A VR Playground for Learning Abstract Mathematics Concepts

    Page(s): 82 - 85
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    Immersive virtual reality (VR) has attracted the attention of many researchers and educators who predicted that VR would considerably affect how learning and teaching are conducted. The research presented here aims to investigate how an interactive immersive virtual learning environment affects conceptual learning, specifically learning of fractions in mathematics. A virtual environment (VE) designed to simulate a playground was created and evaluated through empirical studies with 60 primary school students between the ages of 8 and 12. Results suggest that children who fully interacted with the VE were able to problem-solve but that there was no strong evidence of the expected conceptual change. Rather, it was the passive VR environment, where a virtual robot guided activity, that seemed to support student reflection and recall, leading to indications of sustained conceptual change. View full abstract»

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  • Virtual Worlds: A New Reality for Treating Post-Traumatic Stress Disorder

    Page(s): 86 - 88
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    Science does not follow a linear path. Yet, persistence counts in research, and that's the case with virtual worlds. In the 1990s, many people perceived virtual worlds as a fad. Researchers and developers had to wait until innovations in networking, computer graphics, and haptics made the basic elements of VR inexpensive and ubiquitous. The Nintendo Wii is a great example of how technology has progressed in 15 years, with 100 times the performance and 1/100 the cost of high-end workstations from the '90s. Suddenly, a new virtual world is appearing on the Internet each week. Just as suddenly, many researchers can afford to expose many people to the technology, test hypotheses, and explore new problems. Modern society's problems aren't linear either and can appear almost from nowhere. In the 1980s, HIV caused governments everywhere to respond with huge new research programs, which are having an impact. Today's challenge is almost as pernicious because identifying and treating it is difficult - and its cost to society can be just as devastating. That challenge is post-traumatic stress disorder (PTSD), and the science of virtual worlds might well be a major factor in meeting it. View full abstract»

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  • CG&A Editor in Chief search

    Page(s): c3
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  • Computing Now [advertisement]

    Page(s): c4
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Aims & Scope

IEEE Computer Graphics and Applications bridges the theory and practice of computer graphics.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
L. Miguel Encarnação
University of Iowa