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College of Engineering and Applied Science

    Back to SeminarsAdd Seminar

Presenter: Rajiv Khadka
Date: 12/14/2018
Time: 1:00 pm
Location: EN 4066
Contact Email:

Topic: Investigation of Cross-Platform Immersive Systems and Physical Extensions for COSC Ph.D. Preliminary Exam-Collaborative 3D Interaction with Immersive Data Visualizations
Abstract: Dense multi-dimensional data can be difficult to understand by reading the raw data. 3-dimensional (3D) visualizations have been used in many fields to view this data. Prior research has further shown that exploring 3D visualizations in stereoscopic immersive environments can significantly increase understanding, scientific discovery and insights. Collaboration among research scientists across multiple types of immersive visualization platforms is useful to enhance scientific workflow and lead to unique analysis and discovery. However, until now, for scientists to collaborate they had to separately utilize these environments while communicating using other forms (phone, teleconference, etc.) or had to utilize a shared immersive display in the same physical area (i.e. in an immersive CAVE Automated Virtual Environment). Current analytic tools and visualization infrastructure lack sufficient capabilities to fully support collaboration across multiple types of visualizations, display/interactive systems, interaction techniques and geographically distributed researchers.
In the first section of the presentation, I will present a novel collaboration system that will provide scientists with the ability to connect with other scientists to work together across multiple visualization platforms (i.e. stereoscopic versus monoscopic), multiple datasets (i.e. 3-Dimensional versus 2-Dimensional data), and multiple visualization techniques (i.e. volumetric rendering versus 2D plots). I conducted an experimental user study with professional scientists as participants to evaluate our novel collaboration system, specifically focused on scientific visualization workflow effectiveness. I will present the results and feedback from this study. The results have implications able how coordinated immersive systems are used, what types of immersive systems are used together in collaboration (ie same platforms verses different platforms), and how the design of the interaction capabilities of the immersive systems can influence division of collaborative tasks.
In the second section of the presentation, I will present a novel interaction technique to combine multiple inputs and output modalities. The design of this technique is to harness physical actions that can be extended in collaboration as scientists explore datasets together. The technique uses 3D printed open discs which are tracked and augmented with stereoscopic 3D virtual visualization. It is important to maintain spatial relationships in data visualizations. In our technique, users can use their body to store and organize the virtual objects associated with the physical props by physically hanging them on or attaching to the body. As such this technique helps scientists to maintain those relationships, improve memory association and organization of data visualization components, and extend physical actions to each other’s collaborative space. I have conducted an initial evaluation of our novel Body-Prop 3D User Interaction technique to illustrate usage in both immersive visualizations and virtual environments. I will discuss my results and design modalities for collaboration.
To conclude the presentation, I will present my future plans and goals for my Ph.D. dissertation work.

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