scholarly journals ASK-GraphView: A Large Scale Graph Visualization System

2006 ◽  
Vol 12 (5) ◽  
pp. 669-676 ◽  
Author(s):  
James Abello ◽  
Frank van Ham ◽  
Neeraj Krishnan
Keyword(s):  
Large Scale ◽  
Graph Visualization ◽  
Visualization System

Immersive Visualization of Virtual 3D City Models and its Applications in E-Planning

2012 ◽  
Vol 1 (4) ◽  
pp. 17-34 ◽  
Author(s):  
Juri Engel ◽  
Jürgen Döllner
Keyword(s):  
Large Scale ◽  
Spatial Information ◽  
Immersive Environments ◽  
Camera System ◽  
Visualization System ◽  
3D City Models ◽  
3D Rendering ◽  
Planning Models ◽  
Immersive Visualization ◽  
City Models

Immersive visualization offers an intuitive access to and an effective way of realizing, exploring, and analyzing virtual 3D city models, which are essential tools for effective communication and management of complex urban spatial information in e-planning. In particular, immersive visualization allows for simulating planning scenarios and to receive a close-to-reality impression by both non-expert and expert stakeholders. This contribution is concerned with the main requirements and technical concepts of a system for visualizing virtual 3D city models in large-scale, fully immersive environments. It allows stakeholders ranging from citizens to decision-makers to explore and examine the virtual 3D city model and embedded planning models “in situ.” Fully immersive environments involve a number of specific requirements for both hardware and 3D rendering including enhanced 3D rendering techniques, an immersion-aware, autonomous, and assistive 3D camera system, and a synthetic, immersion-supporting soundscape. Based on these requirements, the authors have implemented a prototypical visualization system that the authors present in this article. The characteristics of fully immersive visualization enable a number of new applications within e-planning workflows and processes, in particular, with respect to public participation, decision support, and location marketing.

An Immersive and Interactive Visualization System for Large-Scale CFD

2003 ◽  
Author(s):  
Yuichi Matsuo
Keyword(s):  
Large Scale ◽  
Interactive Visualization ◽  
Cfd Simulations ◽  
Output Data ◽  
Visualization System ◽  
Aerospace Research ◽  
Projection Screen ◽  
Computational Fluid Dynamics Cfd ◽  
Collaboration And Communication ◽  
Rear Projection Screen

We have been long involved in large-scale computational fluid dynamics (CFD) simulations in aerospace research. These days, as the computer power grows, output data from the simulations becomes larger and larger, and we feel that the current visualization methodology has its limitation in understanding. Thus, with the target concepts of reality, collaboration, and communication, we has built an immersive and interactive visualization system with a large-sized wall-type display. The system, which has been in operation since April 2001, is driven by a SGI Onyx 3400 server with 32 CPUs, 64Gbytes memory, and 6 IR3 graphics pipelines, and comprises a 4.6×1.5-meter (15×5-foot) rear projection screen with 3 high-resolution CRT projectors, supporting stereoscopic viewing, easy color/luminosity matching, and accurate edge-blending. The system is mainly used for visualization of large-scale CFD simulations. This paper will describe the new visualization system introduced at the National Aerospace Laboratory of Japan, and the features of the system are discussed while illustrating some typical visualized examples.

scholarly journals Panacea: Visual exploration system for analyzing trends in annual recruitment using time-varying graphs

PLoS ONE ◽  
2021 ◽  
Vol 16 (3) ◽  
pp. e0247587
Author(s):  
Toshiyuki T. Yokoyama ◽  
Masashi Okada ◽  
Tadahiro Taniguchi
Keyword(s):  
Early Stage ◽  
Visual Exploration ◽  
Recruitment Strategy ◽  
Time Varying ◽  
Graph Visualization ◽  
Dynamic Graph ◽  
Visualization System ◽  
New Graduates ◽  
Real World Datasets ◽  
The Relationship

Annual recruitment data of new graduates are manually analyzed by human resources (HR) specialists in industries, which signifies the need to evaluate the recruitment strategy of HR specialists. Different job seekers send applications to companies every year. The relationships between applicants’ attributes (e.g., English skill or academic credentials) can be used to analyze the changes in recruitment trends across multiple years. However, most attributes are unnormalized and thus require thorough preprocessing. Such unnormalized data hinder effective comparison of the relationship between applicants in the early stage of data analysis. Thus, a visual exploration system is highly needed to gain insight from the overview of the relationship among applicant qualifications across multiple years. In this study, we propose the Polarizing Attributes for Network Analysis of Correlation on Entities Association (Panacea) visualization system. The proposed system integrates a time-varying graph model and dynamic graph visualization for heterogeneous tabular data. Using this system, HR specialists can interactively inspect the relationships between two attributes of prospective employees across multiple years. Further, we demonstrate the usability of Panacea with representative examples for finding hidden trends in real-world datasets, and we discuss feedback from HR specialists obtained throughout Panacea’s development. The proposed Panacea system enables HR specialists to visually explore the annual recruitment of new graduates.

scholarly journals Development of Interactive Visualization System for Unsteady Large-Scale Data Set

2004 ◽  
Vol 24 (Supplement1) ◽  
pp. 311-314
Author(s):  
Kenji ONO ◽  
Tsuyoshi TAMAKI ◽  
Hiroyuki YOSHIKAWA ◽  
Yasuo KATANO ◽  
Kwan-Liu Ma
Keyword(s):  
Large Scale ◽  
Interactive Visualization ◽  
Data Set ◽  
Visualization System ◽  
Large Scale Data ◽  
Scale Data

scholarly journals A THREE-DIMENSIONAL SIMULATION AND VISUALIZATION SYSTEM FOR UAV PHOTOGRAMMETRY

2017 ◽  
Vol XLII-2/W6 ◽  
pp. 217-222 ◽  
Author(s):  
Y. Liang ◽  
Y. Qu ◽  
T. Cui
Keyword(s):  
Large Scale ◽  
Three Dimensional ◽  
Cost Effective ◽  
Three Dimensions ◽  
Wind Condition ◽  
Plan Evaluation ◽  
Visualization System ◽  
Flight Plan ◽  
Aerial Photogrammetry ◽  
Dimensional Simulation

Nowadays UAVs has been widely used for large-scale surveying and mapping. Compared with manned aircraft, UAVs are more cost-effective and responsive. However, UAVs are usually more sensitive to wind condition, which greatly influences their positions and orientations. The flight height of a UAV is relative low, and the relief of the terrain may result in serious occlusions. Moreover, the observations acquired by the Position and Orientation System (POS) are usually less accurate than those acquired in manned aerial photogrammetry. All of these factors bring in uncertainties to UAV photogrammetry. To investigate these uncertainties, a three-dimensional simulation and visualization system has been developed. The system is demonstrated with flight plan evaluation, image matching, POS-supported direct georeferencing, and ortho-mosaicing. Experimental results show that the presented system is effective for flight plan evaluation. The generated image pairs are accurate and false matches can be effectively filtered. The presented system dynamically visualizes the results of direct georeferencing in three-dimensions, which is informative and effective for real-time target tracking and positioning. The dynamically generated orthomosaic can be used in emergency applications. The presented system has also been used for teaching theories and applications of UAV photogrammetry.

A VASUALIZATION FOR THE DYNAMIC BEHAVIORS OF THE MIXTURE OF WATER MASS FOR NORTHWESTERN PACIFIC NEAR JAPAN

2013 ◽  
Vol 04 (supp01) ◽  
pp. 1341002 ◽  
Author(s):  
KUN ZHAO ◽  
SATOSHI NAKADA ◽  
NAOHISA SAKAMOTO ◽  
KOJI KOYAMADA ◽  
CHANDRAJIT BAJAJ ◽  
...  
Keyword(s):  
Large Scale ◽  
Water Mass ◽  
Large Data ◽  
Northwestern Pacific ◽  
Time Varying ◽  
Dynamic Behaviors ◽  
Visualization System ◽  
Volume Compression ◽  
The Rich ◽  
Efficient Exploration

Recent studies are focusing on the distribution of water mass because the mixture region of water mass is highly related to the rich fishing grounds [Yasuda I., Watanabe Y., Fish. Oceanogr.3(3):172–181, 1994]. Due to the large data size and time-varying property, efficient exploration and visualization of the ocean data is always extremely challenging. To extract the dynamic behaviors of the water mass and its mixture from a large-scale simulated ocean dataset, we developed an efficient visualization system by applying our volume compression method and our volume rendering method. This system allows us to investigate the time-varying distributions of ocean physical properties, additionally from the user's perspective and requirements. In the experiments, we show the generality and expressiveness by applying our system for single- and multi-property visualizations to find some significant ocean water mass. Consequently, we could obtain a clear visualization result to show the dynamic behaviors of the mixture of water mass for simulation data regarding a location in the northwestern Pacific near Japan.

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