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Image Stitching on a Camera Cell Phone. T. Brow, S. Elayaperumal, A. Rajgarhia CS223B Winter 2008. Problem. CPU Size / Memory Budget CV Libraries not Available. Viewfinder Alignment. To Estimate Homography For Faster Similarity Metric .

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image stitching on a camera cell phone

Image Stitching on a Camera Cell Phone

T. Brow, S. Elayaperumal, A. Rajgarhia

CS223B

Winter 2008

problem
Problem
  • CPU Size / Memory Budget
  • CV Libraries not Available
viewfinder alignment
Viewfinder Alignment
  • To Estimate Homography
  • For Faster Similarity Metric

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

better stitching in less steps
Better Stitching in Less Steps
  • Corner Detector
  • Estimate Area of Corresponding Corners
  • Run NCC in Nearby Corners
  • Find Homography
finding correspondences
Finding Correspondences

Nearby Search Size: 20 pixels

NCC Threshold: 0.80

Nearby Search Size: 10 pixels

NCC Threshold: 0.95