Todd Humphreys

Austin, TX—Dr. Todd Humphreys delivered a keynote presentation at the 2015 Texas GIS Forum, where he talked about rendering of geo-referenced decimeter accurate maps using Low-Cost Mobile Positioning on a smartphone along with the smartphone's camera.

This presentation focused on techniques for performing carrier-phase differential positioning using a low-quality antenna, and generation of an accurate 3-dimensional point cloud using a smartphone. The points in the generated map are geo-referenced which enables distributed generation of maps, unlike the standard computer vision techniques where a continuous sequence of overlapping images is required.

The presentation can be downloaded from here.