1. Image Stitching Sean M. Arietta 2007-02-02 Methods and Implementations

2. Introduction: Combining Images Image Stack Operation Removing Highlights\Shadows

3. Introduction: Montage Operations Compositing Merge disconnected data Extended DOF Relighting Image Stitching Merge connected data Clean Plating Remove data

4. Introduction: Clean Plating Approach: L2 Norm of RGB Large L2 → Discard Pixels Affinity  (L2) -1

5. Introduction: Image Stitching Image Stack Connected data Merge Data Minimize Error Exposure Differences Radial Distance Region Coherence Focal Impurities ANYTHING!

6. Introduction: Minimization Graph Technique Create nodes Connect nodes Assign weights Energy Optimization Find minimum cost Perform cut

7. Graph Cut: Example 123 Node: Pictures Connection: Overlapping Pictures Weight: Distance from Center & Size of Sphere

8. Graph Cut: Visualization Build Graph Problem dependant Find Vertex Covers Minimize Cover

9. Graph Cut: Vertex Cover Definition Mathematical: Vernacular Visual {a,b} = {blue,green}

10. Graph Cut: Minimizing Cover Assign Weights Problem dependant Perform Minimization 12 8 5 14 3 26 18 Cost: 12+5+14+18+26 = 75Cost: 12+8+5+14+3+18 = 60

11. Introduction: Image Stitching Bullet

12. Introduction: Image Stitching Bullet

13. Introduction: Image Stitching Bullet

14. Introduction: Image Stitching Bullet

15. Introduction: Image Stitching Bullet

16. Introduction: Image Stitching Bullet

17. Introduction: Image Stitching Bullet

18. Introduction: Image Stitching Bullet

19. Introduction: Image Stitching Bullet

20. Introduction: Image Stitching Bullet