Image Stitching on a Camera Cell Phone - PowerPoint PPT Presentation

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Image Stitching on a Camera Cell Phone

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Image Stitching on a. Camera Cell Phone. T. Brow, S. Elayaperumal, A. Rajgarhia. CS223B ... Images from 'Viewfinder Alignment' by A. Adams, N. Gelfand & K. ... – PowerPoint PPT presentation

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Title: Image Stitching on a Camera Cell Phone


1
Image Stitching on a Camera Cell Phone
  • T. Brow, S. Elayaperumal, A. Rajgarhia
  • CS223B
  • Winter 2008

2
Problem
  • CPU Size / Memory Budget
  • CV Libraries not Available

3
Viewfinder Alignment
  • To Estimate Homography
  • For Faster Similarity Metric

Images from Viewfinder Alignment by A. Adams,
N. Gelfand K. Pulli (Eurographics 2008)
4
VIDEO
5
Better Stitching in Less Steps
  • Corner Detector
  • Estimate Area of Corresponding Corners
  • Run NCC in Nearby Corners
  • Find Homography

6
Finding Correspondences
Nearby Search Size 20 pixels NCC Threshold
0.80
Nearby Search Size 10 pixels NCC Threshold
0.95
7
Work Allocation
  • Tom Brow
  • Automatic Stitching on N95
  • Santhi Elayaperumal
  • Using Viewfinder Alignment as a Similarity Metric
  • Aditya Rajgarhia
  • Implementing MORF and SURF, Fast Feature Finding
    Methods

8
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