Large Scale Visualization of 3D Urban Reconstruction

MPhil Thesis Defence


Title: "Large Scale Visualization of 3D Urban Reconstruction"

By

Miss Yang LIU


Abstract

Recent advances in geospatial data acquisition technologies are enabling 
automatic urban reconstruction in ever increasing scale. Though a number 
of mature systems are developed for interative exploration of the final 
reconstructed urban environments, few try to visualize the intermediate 
products of the entire reconstruction pipeline. We present a system to 
interactive navigate and explore large scale reconstruction data sets 
consisting of input images, 3D point clouds and polygonal meshes in an 
integrated Internet-based platform. The massive scale of data is handled 
by hierachical level of details methods, which generates simplified data 
through mesh simplification and point resampling as well as streams and 
visualizes data progressively in a fine-grained manner. We employ cache, 
culling and compression algorithms specifically tailored to our 
hierachical data structure to further speed up rendering. Our system is 
built directly into standard browser, which can be accessed independent of 
platform including mobile devices with Internet access. Our system has 
hosted a dozen of large scale urban reconstruction datasets and we will 
demonstrate two representative datasets in this thesis.


Date:			Wednesday, 20 August 2014

Time:			2:00pm - 4:00pm

Venue:			Room 4483
 			Lifts 25/26

Committee Members:	Dr. Huamin Qu (Supervisor)
 			Prof. Long Quan (Supervisor)
 			Prof. Chiew-Lan Tai (Chairperson)
 			Dr. Pedro Sander


**** ALL are Welcome ****