Image Stitching on a Camera Cell Phone

T. Brow, S. Elayaperumal, A. Rajgarhia

CS223BWinter 2008

Problem

• CPU Size / Memory Budget• CV Libraries not Available

Viewfinder Alignment

• To Estimate Homography• For Faster Similarity Metric

Images from “Viewfinder Alignment” by A. Adams, N. Gelfand & K. Pulli (Eurographics 2008)

VIDEO

Better Stitching in Less Steps

• Corner Detector• Estimate Area of Corresponding Corners

• Run NCC in Nearby Corners• Find Homography

Finding CorrespondencesNearby Search Size: 20 pixels

NCC Threshold: 0.80

Nearby Search Size: 10 pixels

NCC Threshold: 0.95