A Theft-Based Approach to 3D Object Acquisition Ronit Slyper Jim McCann

Outline Previous Work Our Method Results Future Work

Previous Work Commercial  Contact Scanners  Non-contact Scanners Coordinate Measuring Machine Laser Range Finder

Previous Work (continued) Real-Time 3D Model Acquisition (Rusinkiewicz, Hall-Holt, Levoy)  Structured-light rangefinder, iterative closed-points for alignment, point-based merging and rendering algorithms  60 Hz

Weaknesses of Previous Work Inexact  Range / accuracy tradeoff for laser rangefinders  Finite accuracy Computer-intensive  Point alignment, triangulation Stationary objects

Our Method We propose a theft-based object acquisition system  Exact surface and material acquired  No expensive hardware  Data-set may be viewed in real-time with no expensive precomputation  For many objects, acquisition is of low time & space complexity (i.e., trivial)

Methods The exact theft-based method we used is based on a heuristic we call “casing”.  Grab-and-Run  Yoink  Advanced techniques Bribery, subterfuge, etc (see paper)  Under development: The Siggraph Blackmail

Results Stanford bunny model acquisition

Future Work Additional theft-based methods  Ninjas, pirates, grad students Punishment and arrest alleviation  Cache-based approach

Any Questions?