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Front Cover (2018)

Institute of Electrical and Electronics Engineers (IEEE)

In: IEEE Computer Graphics and Applications

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Publikationsdatum: 2018-03-09

Beschreibung: Cover to the January/February issue of IEEE Computer Graphics and Applications

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Digitale ISSN: 1558-1756

Thema: Informatik

Publiziert von Institute of Electrical and Electronics Engineers (IEEE)

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Masthead (2018)

Institute of Electrical and Electronics Engineers (IEEE)

In: IEEE Computer Graphics and Applications

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Publikationsdatum: 2018-03-09

Beschreibung: List of Editorial Board, Advisory Board, Staff, Volunteers, and IEEE Computer Society information.

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Thema: Informatik

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Table of Contents (2018)

Institute of Electrical and Electronics Engineers (IEEE)

In: IEEE Computer Graphics and Applications

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Publikationsdatum: 2018-03-09

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Thema: Informatik

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Building Bridges between Research and Applications (2018)

Institute of Electrical and Electronics Engineers (IEEE)

In: IEEE Computer Graphics and Applications

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Publikationsdatum: 2018-03-09

Beschreibung: Newly appointed Editor in Chief Torsten Möller thanks outgoing EIC Miguel Encarnação, discusses the history of IEEE Computer Graphics and Applications and the current issue, and welcomes new members of the magazines Editorial Board.

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Improving Visual Communication (2018)

Institute of Electrical and Electronics Engineers (IEEE)

In: IEEE Computer Graphics and Applications

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Publikationsdatum: 2018-03-09

Beschreibung: A tool that creates realtime interactive color maps for scientific visualization helped enhance the dynamics of a major research project for the Climate, Ocean, and Sea Ice Modeling team at Los Alamos National Laboratory.

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Objective Quality Assessment and Perceptual Compression of Screen Content Images (2018)

Institute of Electrical and Electronics Engineers (IEEE)

In: IEEE Computer Graphics and Applications

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Publikationsdatum: 2018-03-09

Beschreibung: Screen content image (SCI) has recently emerged as an active topic due to the rapidly increasing demand in many graphically rich services such as wireless displays and virtual desktops. SCIs are often composed of pictorial regions and computer generated textual/graphical content, which exhibit different statistical properties that often lead to different viewer behaviors. Inspired by this, we propose an objective quality assessment approach for SCIs that incorporates both visual field adaptation and information content weighting into structural similarity based local quality assessment. Furthermore, we develop a perceptual screen content coding scheme based on the newly proposed quality assessment measure, targeting at further improving the SCI compression performance. Experimental results show that the proposed quality assessment method not only better predicts the perceptual quality of SCIs, but also demonstrates great potentials in the design of perceptually optimal SCI compression schemes.

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Putting VR/AR to Work (2018)

Institute of Electrical and Electronics Engineers (IEEE)

In: IEEE Computer Graphics and Applications

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Publikationsdatum: 2018-03-09

Beschreibung: Virtual Reality (VR) and Augmented Reality (AR) have received a lot of attention in the last few years. This article studies the current state of the VR/AR penetration in the enterprise and highlights a few examples where these technologies have been successful.

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A Taxonomy of Spatial Interaction Patterns and Techniques (2018)

Institute of Electrical and Electronics Engineers (IEEE)

In: IEEE Computer Graphics and Applications

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Publikationsdatum: 2018-03-09

Beschreibung: This article presents a taxonomy of spatial interaction patterns and techniques and discusses specific examples.

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Thema: Informatik

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Efficient C2-Weighting for Image Warping (2018)

Institute of Electrical and Electronics Engineers (IEEE)

In: IEEE Computer Graphics and Applications

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Publikationsdatum: 2018-03-09

Beschreibung: Handle-driven image warping based on linear blending is widely used in many applications because of its merits on intuitiveness, efficiency, and ease of implementation. In this paper, we develop a method to compute high-quality weights within a closed domain for image warping. The property of C2 continuity in weights is guaranteed by the carefully formulated basis functions. The efficiency of our algorithm is ensured by a closed-form formulation of the computation for weights. The cost of inserting a new handle is only the time to evaluate the distances from the new handle to all other sample points in the domain. A virtual handle insertion algorithm is developed to allow users to freely place handles within the domain while preserving the satisfaction of all expected criteria on weights for linear blending. Experimental examples for real-time applications are shown to demonstrate the effectiveness of this method.

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Thema: Informatik

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10 Years of MegaMol: The Pain and Gain of Creating Your Own Visualization Framework (2018)

Institute of Electrical and Electronics Engineers (IEEE)

In: IEEE Computer Graphics and Applications

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Publikationsdatum: 2018-03-09

Beschreibung: This article discusses our experience in creating MegaMol, an open-source visualization framework for large particle-based data.

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Thema: Informatik

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CS Info (2018)

Institute of Electrical and Electronics Engineers (IEEE)

In: IEEE Computer Graphics and Applications

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Publikationsdatum: 2018-03-09

Beschreibung: Information about the IEEE Computer Society.

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COMPSAC 2018 (2018)

Institute of Electrical and Electronics Engineers (IEEE)

In: IEEE Computer Graphics and Applications

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Publikationsdatum: 2018-03-09

Beschreibung: Ad for COMPSAC 2018.

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Thema: Informatik

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Optimizing Scientist Time through In Situ Visualization and Analysis (2018)

Institute of Electrical and Electronics Engineers (IEEE)

In: IEEE Computer Graphics and Applications

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Publikationsdatum: 2018-03-09

Beschreibung: In situ processing produces reduced size persistent representations of a simulations state while the simulation is running. The need for in situ visualization and data analysis is usually described in terms of supercomputer size and performance in relation to available storage size.

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IEEE Computer Society: Be at the Center of It All (2018)

Institute of Electrical and Electronics Engineers (IEEE)

In: IEEE Computer Graphics and Applications

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Publikationsdatum: 2018-03-13

Beschreibung: IEEE Computer Society Membership Ad

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ColorMoves: Real-time Interactive Colormap Construction for Scientific Visualization (2018)

Institute of Electrical and Electronics Engineers (IEEE)

In: IEEE Computer Graphics and Applications

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Publikationsdatum: 2018-03-09

Beschreibung: This article presents ColorMoves, an interactive tool that promotes exploration of scientific data through artist-driven color methods in a unique and transformative way. We discuss the power of contrast in scientific visualization, the design of the ColorMoves tool, and the tools application in several science domains.

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Crosswalk Localization from Low Resolution Satellite Images to Assist Visually Impaired People (2018)

Institute of Electrical and Electronics Engineers (IEEE)

In: IEEE Computer Graphics and Applications

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Publikationsdatum: 2018-03-09

Beschreibung: In this article, we propose a model for crosswalk detection and localization by using satellite images captured from Google Maps, for the purpose of assisting visually impaired people. The detection is performed by an SVM classifier, which is combined with Google Road Map to speed up computation time and to eliminate some possible false alarms. We assume that a visually impaired person holds a smartphone with an embedded GPS, which is used to initialize the extraction of images from Google Maps, as well as to assist its user by providing audio feedback of the nearest detected crosswalk. This issue brings forward significant interest and it is also very challenging, mainly due to illumination changes, occlusion, image noise and resolution, besides the quality of crosswalks that sometimes are badly painted in many developing countries. Experimental results indicate that the proposed model works well in low resolution images, effectively detecting and localizing crosswalks in simulated scenarios.

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Parametric Reshaping of Portrait Images for Weight-change (2018)

Institute of Electrical and Electronics Engineers (IEEE)

In: IEEE Computer Graphics and Applications

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Publikationsdatum: 2018-03-09

Beschreibung: We present an easy-to-use parametric image retouching method for thinning or fattening a face in a single portrait image while maintaining a close similarity to the source image. First, our method reconstructs a 3D face from the input face image using a morphable model. Second, according to the linear regression equation derived from the depth statistics of the soft tissue in the face and the user-set parameters of weight-change degree, we calculate the new positions of the feature points. The Laplacian deformation method is then used for non-feature points in the 3D face model. Our model-based reshaping process can achieve globally consistent editing effects without noticeable artifacts. We seamlessly blend the reshaped face region with the background using image retargeting method based on mesh parametrization. The effectiveness of our algorithm is demonstrated by experiments and user study.

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ARIES: Enabling Visual Exploration and Organization of Art Image Collections (2018)

Institute of Electrical and Electronics Engineers (IEEE)

In: IEEE Computer Graphics and Applications

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Publikationsdatum: 2018-03-09

Beschreibung: Art historians have traditionally used physical light boxes to prepare exhibits or curate collections. On a light box, they can place slides or printed images, move the images around at will, group them as desired, and visual-ly compare them. The transition to digital images has rendered this workflow obsolete. Now, art historians lack well-designed, unified interactive software tools that effectively support the operations they perform with physi-cal light boxes. To address this problem, we designed ARIES (ARt Image Exploration Space), an interactive image manipulation system that enables the exploration and organization of fine digital art. The system allows images to be compared in multiple ways, offering dynamic overlays analogous to a physical light box, and sup-porting advanced image comparisons and feature-matching functions, available through computational image processing. We demonstrate the effectiveness of our system to support art historians tasks through real use cases.

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