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EZ-Manipulator:Designing a mobile,fast,and ambiguity-free 3D manipulation interface using smartphones

Computational Visual Media 2018年第2期4卷 139-147页

作者： Po-Huan Wseng Shih-Hsuan Hung Pei-Ying Chiang Chih-Yuan Yao Hung-Kuo Chu "National Tsing Hua University" Hsinchu 30013TaiwanChina. "National Taiwan University of Science and Technology" Taipei 10607TaiwanChina. "National Taipei University of Technology" Taipei 10607TaiwanChina.

Interacting with digital contents in 3 D is an essential task in various applications such as modeling packages, gaming, virtual reality, etc. Traditional interfaces using keyboard and mouse or trackball usually require a non-trivial amount of working space as well as a learning process. We present the design of EZ-Manipulator, a new 3 D manipulation interface using smartphones that supports mobile, fast, and ambiguity-free interaction with 3 D objects. Our system leverages the built-in multi-touch input and gyroscope sensor of smartphones to achieve 9 degrees-of-freedom axis-constrained manipulation and free-form *** EZ-Manipulator to manipulate objects in 3 D is easy. The user merely has to perform intuitive singleor two-finger gestures and rotate the hand-held device to perform manipulations at fine-grained and coarse levels respectively. We further investigate the ambiguity in manipulation introduced by indirect manipulations using a multi-touch interface, and propose a dynamic virtual camera adjustment to effectively resolve the ambiguity. A preliminary study shows that our system has significant lower task completion time compared to conventional use of a keyboard–mouse interface, and provides a positive user experience to both novices and experts.

关键词： 3D manipulation interface interaction technique multi-touch gyroscope sensorl mobile device input device

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Visual exploration of movement and event data with interactive time masks

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Visual Informatics 2017年第1期1卷 25-39页

作者： Natalia Andrienko Gennady Andrienko Elena Camossi Christophe Claramunt Jose Manuel Cordero Garcia Georg Fuchs Melita Hadzagic Anne-Laure Jousselme Cyril Ray David Scarlatti George Vouros Fraunhofer Institute IAIS Sankt AugustinGermany City University London LondonUK NATO Science and Technology Organization Centre for Maritime Research and ExperimentationItaly Naval Academy Research Institute France CRIDA-Reference Center for Research Development and Innovation in ATMMadridSpain Boeing Research&Technology Europe Spain Department of Digital System University of PiraeusGreece

We introduce the concept of time mask,which is a type of temporal filter suitable for selection of multiple disjoint time intervals in which some query conditions *** a filter can be applied to time-referenced objects,such as events and trajectories,for selecting those objects or segments of trajectories that fit in one of the selected time *** selected subsets of objects or segments are dynamically summarized in various ways,and the summaries are represented visually on maps and/or other displays to enable *** time mask filtering can be especially helpful in analysis of disparate data(e.g.,event records,positions of moving objects,and time series of measurements),which may come from different *** detect relationships between such data,the analyst may set query conditions on the basis of one dataset and investigate the subsets of objects and values in the other datasets that co-occurred in time with these *** describe the desired features of an interactive tool for time mask filtering and present a possible implementation of such a *** example of analysing two real world data collections related to aviation and maritime traffic,we show the way of using time masks in combination with other types of filters and demonstrate the utility of the time mask filtering.

关键词： Data visualization Interactive visualization interaction technique

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