SIFT Demo Heather Dunlop March 20, 2006

Object Recognition Lowe, CVPR Tutorial, 2003 Extract outlines with background subtraction Lowe, CVPR Tutorial, 2003

Object Recognition Under Occlusion Extract outlines with background subtraction Lowe, CVPR Tutorial, 2003

Location Recognition Lowe, CVPR Tutorial, 2003

Recognizing Panoramas M. Brown and D.G. Lowe, “Recognizing Panormas,” ICCV 2003 Feature matching SIFT features Nearest Neighbour matching Image matching RANSAC for homography Probabilistic model for verification Bundle adjustment Multi-band blending kNN (k=4) k-d tree Approx nearest neighbours found in O(nlogn)

SIFT Features Brown, ICCV 2003

RANSAC for Homography Brown, ICCV 2003

Probabilistic Model for Verification Brown, ICCV 2003

Image Matching Brown, ICCV 2003

Finding the Panoramas Brown, ICCV 2003

Finding the Panoramas Brown, ICCV 2003

Finding the Panoramas Brown, ICCV 2003

Bundle Adjustment Brown, ICCV 2003 New images initialized with rotation, focal length of best matching image Brown, ICCV 2003

Multi-band Blending Brown, ICCV 2003

From My Kitchen Window

From My Kitchen Window

From My Kitchen Window

Other Applications Mobile robot localization 3D scene modeling