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IEEE Computer Graphics and Applications

Agnieszka Wnuk, Konrad J Debski, Marcin Kozak
Correlation analysis is one of the most popular statistical methods. Despite that, the way research reports correlation is often misleading. The difficulty increases with the amount of information that must be read and interpreted. The proposed CI thermometer makes correlation matrices much easier to read and provides information that would be difficult to interpret when presented in another way.
November 2017: IEEE Computer Graphics and Applications
Yusuf Sahillioglu, Metin Sezgin
Sketch-based queries are a suitable and superior alternative to traditional text- and example-based queries for 3D shape retrieval. The authors developed an articulated 3D shape retrieval method that uses easy-to-obtain 2D sketches. In contrast to existing sketch-based retrieval systems that lower the 3D database models to 2D, their algorithm implicitly lifts the 2D query to 2.5D by inferring depth information from possibly self-intersecting sketches using a good continuation rule. It does not require 3D example models to initiate queries, but results show that it achieves accuracy comparable to a state-of-the-art example-based 3D shape retrieval method...
November 2017: IEEE Computer Graphics and Applications
Seung-Hyun Yoon, John Lewis, Taehyun Rhee
Creating realistic 3D face models is a challenging problem in computer graphics because humans are so sensitive to facial abnormalities. The authors propose a method to synthesize a 3D face model using weighted blending of multiscale details from different face models. Using multiscale continuous displacement maps (CDMs), they achieve full correspondences across multiple scales in the parameter space. Their results demonstrate detail transfer across faces with highly different proportions, such as between humans and nonhuman creatures...
November 2017: IEEE Computer Graphics and Applications
Markus Huber, Bernhard Eberhardt, Daniel Weiskopf
In cloth simulation, the behavior of textiles largely depends on initial conditions, parameters, and simulation techniques. Usually, several combinations of those aspects are altered until a simulation setting is found to create a satisfying animation. However, if an initial condition, such as a collision object, is changed afterward or the cloth behavior is transferred to a different scene, the existing set of simulation parameters could no longer be suitable for the desired look. In this case, it is difficult to find a new configuration by changing parameters manually and to determine if it conforms the desired properties...
November 2017: IEEE Computer Graphics and Applications
Adela Barbulescu, Remi Ronfard, Gerard Bailly
An important problem in computer animation of virtual characters is the expression of complex mental states during conversation using the coordinated prosody of voice, rhythm, facial expressions, and head and gaze motion. In this work, the authors propose an expressive conversion method for generating natural speech and facial animation in a variety of recognizable attitudes, using neutral speech and animation as input. Their method works by automatically learning prototypical prosodic contours at the sentence level from an original dataset of dramatic attitudes...
November 2017: IEEE Computer Graphics and Applications
Yun-Hyeong Kim, Taesoo Kwon, Daeun Song, Young J Kim
The proposed physics-based approach can generate stable and robust full-body animation of various gaits under different gravitational conditions. As input, this method takes motion-captured human motions in the Earth's gravity and builds an inverted-pendulum on cart (IPC) control model, which is analyzed using the motion-captured data. The authors use a pre-estimation model based on the Froude number to predict the desired velocity and stride frequency of a character model in hypogravity and then generate full-body animation using a pendulum trajectory generator, motion planner, and tracking...
November 2017: IEEE Computer Graphics and Applications
Vito M Manghisi, Michele Fiorentino, Michele Gattullo, Antonio Boccaccio, Vitoantonio Bevilacqua, Giuseppe L Cascella, Michele Dassisti, Antonio E Uva
This article explores what it takes to make interactive computer graphics and VR attractive as a promotional vehicle, from the points of view of tourism agencies and the tourists themselves. The authors exploited current VR and human-machine interface (HMI) technologies to develop an interactive, innovative, and attractive user experience called the Multisensory Apulia Touristic Experience (MATE). The MATE system implements a natural gesture-based interface and multisensory stimuli, including visuals, audio, smells, and climate effects...
November 2017: IEEE Computer Graphics and Applications
Claudine Jaenichen
Understanding cognition and the context of decision-making should be prioritized in the design process in order to accurately anticipate the outcome for intended audiences. A thorough understanding of cognition has been excluded from being a part of foundational design principals in visual communication. By defining leisure, direct, urgent, and emergency scenarios and providing examples of work that deeply considers the viewer's relationship to the design solution in context of these scenarios allows us to affirm the relevancy of cognition as a design variable and the importance of projects that advocate public utility...
November 2017: IEEE Computer Graphics and Applications
Yoko Usui, Katsumi Sato, Shinichi Watabe
The increased number of students enrolling in dance classes in Japan has resulted in a shortage of qualified instructors, leaving classes to be taught by instructors who are not trained in dance. The authors developed a system specifically designed to help nonqualified dance instructors teach dance using motion capture and animation. The goal is to allow dancers to easily self-evaluate their own performances by comparing it to a standard example.
November 2017: IEEE Computer Graphics and Applications
Gary Singh
Artist James Alan Smith is driven to involve himself in the creative process, whether through coding or visual art. The effect of his abstract and representation pieces is extraordinary and mysterious, and each encourages viewers to see the complex relationships between the various layers.
November 2017: IEEE Computer Graphics and Applications
Lhaylla Crissaff, Louisa Wood Ruby, Samantha Deutch, R Luke DuBois, Jean-Daniel Fekete, Juliana Freire, Claudio Silva
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 visually 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 physical 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...
October 5, 2017: IEEE Computer Graphics and Applications
Guanbin Li, Sai Bi, Jue Wang, Yingqing Xu, Yizhou Yu
A color sketch creates a vivid depiction of a scene using sparse pencil strokes and casual colored brush strokes. The interactive drawing system ColorSketch can help novice users generate color sketches from photos. To preserve artistic freedom and expressiveness, the proposed system gives users full control over pencil strokes, while automatically augmenting pencil sketches using color mapping, brush stroke rendering, and blank area creation. Experimental and user study results demonstrate that users, especially novices, can create better color sketches with our system than when using traditional manual tools...
May 2017: IEEE Computer Graphics and Applications
Ed Angel
OpenGL has been the standard API for teaching computer graphics. There are now multiple versions of the standard, including WebGL. which is the JavaScript implementation of OpenGL ES 2.0. The author argues that WebGL is the version best suited for an introductory course in computer graphics.
March 2017: IEEE Computer Graphics and Applications
Diana Fernondez-Prieto, Carol Naranjo-Valero, Jose Tiberio Hernandez, Hans Hagen
Recent advances in web development, including the introduction of HTML5, have opened a door for visualization researchers and developers to quickly access larger audiences worldwide. Open source libraries for the creation of interactive visualizations are becoming more specialized but also modular, which makes them easy to incorporate in domain-specific applications. In this context, the authors developed STRAD (Spatio-Temporal-Radar) Wheel, a web-based library that focuses on the visualization and interactive query of temporal data in a compact view with multiple temporal granularities...
March 2017: IEEE Computer Graphics and Applications
Aaron Scherzinger, Tobias Brix, Dominik Drees, Andreas Volker, Kiril Radkov, Niko Santalidis, Alexander Fieguth, Klaus H Hinrichs
The winning entry of the 2015 IEEE Scientific Visualization Contest, this article describes a visualization tool for cosmological data resulting from dark-matter simulations. The proposed system helps users explore all aspects of the data at once and receive more detailed information about structures of interest at any time. Moreover, novel methods for visualizing and interactively exploring dark-matter halo substructures are proposed.
March 2017: IEEE Computer Graphics and Applications
Jing Xia, Yumeng Hou, Yingjie Victor Chen, Zhenyu Cheryl Qian, David S Ebert, Wei Chen
Visual clutter is a common challenge when visualizing large rank time series data. WikiTopReader, a reader of Wikipedia page rank, lets users explore connections among top-viewed pages by connecting page-rank behaviors with page-link relations. Such a combination enhances the unweighted Wikipedia page-link network and focuses attention on the page of interest. A set of user evaluations shows that the system effectively represents evolving ranking patterns and page-wise correlation.
March 2017: IEEE Computer Graphics and Applications
Alice Thudt, Bongshin Lee, Eun Kyoung Choe, Sheelagh Carpendale
Personal visualizations have the great potential to provide the benefits of visualizations to everyone in their everyday lives. Their diverse goals combined with the personal data they contain and the contexts in which they are being used, however, make their evaluation particularly challenging and call for a wider perspective on empirical approaches. We need to devise new methods and adapt existing methods from other fields to account for the specific goals and challenges in this emerging research area. An open-minded approach to empirical methods may help us gain a more realistic understanding of personal visualizations...
March 2017: IEEE Computer Graphics and Applications
Susan Reilly
As news migrates to mobile phones, media companies are turning to data visualization to wet readers' appetites for stories they can read at length on their home or work computers. Journalists are trained to write stories, not in statistics or coding, however. The big news organizations have the funds to hire computer graphics experts, but local news organizations need help.
March 2017: IEEE Computer Graphics and Applications
Gary Singh
Artist Frank Bonilla uses a photo editing program called ACDSee Pro in all of his digital artwork. His hundreds of colorful digital images were created in an ad lib, free style, random, and unplanned process that is adventurous and exploratory.
March 2017: IEEE Computer Graphics and Applications
Yosuke Onoue, Nobuyuki Kukimoto, Naohisa Sakamoto, Kazuo Misue, Koji Koyamada
An evaluation structure is a hierarchical structure of human cognition extracted from interviews based on the evaluation grid method. An evaluation structure can be defined as a directed acyclic graph (DAG). The authors propose a layer-assignment method that is part of the Sugiyama framework, a popular method for drawing DAGs, to satisfy the requirements for drawing evaluation structures. Their evaluations demonstrate that the layered graph drawing produced by the proposed layer-assignment method is preferred by users and aids in the understanding of evaluation structures...
March 2017: IEEE Computer Graphics and Applications
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