Automated Reconstruction of 3D Models
Google engEDU
1 hr 2 min – Oct 25, 2006
Google Tech Talks
October 25, 2006
Avideh Zakhor, Prof. UC Berkeley
ABSTRACT
In this talk, we present a fast approach to automated generation of textured 3D city models with both high details at ground level, and complete coverage for birds-eye view. The goal is photorealistic rendering for walk throughs, drive through and fly throughs. A close-range facade model is acquired at the ground level by driving a vehicle equipped with laser scanners and a digital camera under normal traffic conditions on public roads in a continuous, rather than a stop-and-go fashion, resulting in extremeley fast data acquisition times; a far-range Digital Surface Model (DSM), containing complementary roof and terrain shape, is created from airborne laser scans, then triangulated, and finally texture-mapped with aerial imagery. The facade models are first registered with respect to the DSM using Monte-Carlo-Localization, and then merged with the DSM by removing redundant parts and filling gaps. The continuous mode scanning, combined with a no human in the loop approach, has enabled us to generated detailed models of downtown Berkeley facades with 25 minutes of driving under normal traffic conditions and 4 hours of automated processing on a single CPU personal computer. We will show the resulting downtown Berkeley models using both commercial vrml viewers, as well as inserted in Google Earth.
video
http://video.google.com/videoplay?docid=1783762882645705066
- Download: “Automated Reconstruction Of 3d Models” (video/mp4)
Tags: abstract, c, computer, http, lan, local, server, ssi
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