• Publications
  • Influence
Legible Simplification of Textured Urban Models
TLDR
This work developed a mesh-simplification algorithm that incorporates concepts from architecture and city planning, which relies on the concept of urban legibility, which segments a city into paths, edges, districts, nodes, and landmarks.
Low-cost coastal mapping using Kinect v2 time-of-flight cameras
  • T. Butkiewicz
  • Computer Science, Environmental Science
    Oceans - St. John's
  • 1 September 2014
TLDR
This paper evaluates Microsoft's next generation Kinect for Windows v2 sensor, which employs time-of-flight technology, and finds it has great potential for use in coastal mapping and other Earth science applications where budget constraints preclude the use of traditional remote sensing data acquisition technologies.
Visual Analysis and Semantic Exploration of Urban LIDAR Change Detection
TLDR
A method of LIDar change detection is presented that maintains accuracy by only using the raw, irregularly spaced LIDAR points, and extracts relevant changes as individual 3D models within an interactive application that allows the chronological exploration of the changes to an urban environment.
A two-stage framework for designing visual analytics system in organizational environments
TLDR
This design framework builds upon and extends current practices pertaining to analytical workflow and focuses, in particular, on incorporating both general domain analysis processes as well as individual's analytical activities.
Multi-Focused Geospatial Analysis Using Probes
TLDR
The probe concept can be incorporated into a variety of geospatial visualizations to empower users with the ability to observe, coordinate, and compare data across multiple local regions to deal with complex simulations or analyses where behavior in various localities differs from other localities.
Multi-touch 3D exploratory analysis of ocean flow models
TLDR
This work presents a system that employs a combination of stereoscopic rendering, to best reveal and illustrate 3D structures and patterns, and multi-touch interaction, to allow for natural and efficient navigation and manipulation within the 3D environment.
Alleviating the Modifiable Areal Unit Problem within Probe‐Based Geospatial Analyses
TLDR
This interface first alerts the user if it detects any potential unfairness between regions when they are selected for comparison, and provides a number of semi‐automated tools to assist the user in correcting their regions' boundaries to minimize the inequalities they feel could significantly impact their comparisons.
Visualizing uncertainty for geographical information in the global terrorism database
TLDR
To effectively identify geo-spatial trends within the Global Terrorism Database of the START Center, a novel usage of squarified treemaps is developed that maintains the strengths of traditional map-viewing but incorporates some measure of data verity.
A linked feature space approach to exploring lidar data
TLDR
This work introduces a linked feature space concept that allows users to make regular, conjunctive, and disjunctive discoveries in non-uniform LIDAR data by interacting with multidimensional transfer functions.
Hierarchical simplification of city models to maintain urban legibility
TLDR
A novel approach to simplifying city-sized collections of 2.5D buildings based on the principles of “urban legibility” as defined by architects and city planners is presented, which includes a clustering algorithm tailored towards forming logical groups while respecting roads, a polyline simplification algorithm that maintains boundary facades, and a LOD process that preserves landmarks and skylines.
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