CISL Seminar - Aperture: A System for Interactive Visualization of Voluminous Geospatial Data

Title: Aperture: A System for Interactive Visualization of Voluminous Geospatial Data

Speaker: Kevin Bruhwiler (CSU)

Abstract: The growth in observational data volumes over the past decade has occurred alongside a need to make sense of the phenomena that underpin them. Visualization is a key component of the data wrangling process that precedes the analyses that informs these insights. The crux of this study is interactive visualizations of spatiotemporal phenomena from voluminous datasets. Spatiotemporal visualizations of voluminous datasets introduce challenges relating to interactivity, overlaying multiple datasets and dynamic feature selection, resource capacity constraints, and scaling. Our methodology to address these challenges relies on a novel mix of algorithms and systems innovations working in concert to ensure effective apportioning and amortization of workloads and enables interactivity during visualizations. In particular our research prototype, Aperture, leverages sketching algorithms, effective query predicate generation and evaluation, avoids performance hotspots, harnesses coprocessors for hardware acceleration, and convolutional neural network based encoders to render visualizations while preserving responsiveness and interactivity. Finally, we also explore issues in effective containerization to support visualization workloads. We also report on several empirical benchmarks that profile and demonstrate the suitability of our methodology to preserve interactivity while utilizing resources effectively to scale.

Biography: Kevin Bruhwiler is a Graduate Research Assistant at Colorado State University. He grew up in Boulder, Colorado and received a Master's in Computer Science in 2020 for work in the fields of distributed systems, big data, and geospatial data visualization. He is planning to pursue a PhD in Computer Science at the University of Southern California.

Date: January 20, 2021 / 1-2pm MT - VIRTUAL

Live Link:

Contact to be added to the calendar event.


Type of event:

Announcement Timing: 
Friday, January 8, 2021 to Wednesday, January 20, 2021
Calendar Timing: 
Wednesday, January 20, 2021 - 1:00pm to 2:00pm MST

Posted by Taysia Peterson at ext. 1222,

Quick Facts

NCAR is managed by the nonprofit University Corporation for Atmospheric Research on behalf of NSF and the UCAR university community.

  • NCAR is not a federal agency and its employees are not part of the federal personnel system.
  • Our activities complement those of the federal agencies and we work closely with them.

More about us