If you repeatedly switch this page with the previously one, you shall see that the center of the ball on the picture is mostly unchanged, and the edges are stretched so that spherical deformations are minimized. It is, of course, impossible to represent the spherical image on the 2D plane, but this edge stretching enables using numbers which are not exactly in the center of the image.



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0. Home
H. Hardware
L. Lighting
1. Frame fetch
2. Ball locate
3. Stretching
4. Unsharp mask
5. Component selection
6. Holes and scratches
7. Component shrink
8. Invert selection
9. Component list
10. Select best circle
11. Angle detection
12. Rotate selected
13. Select broad lines
14. Selected components list
15. Components scaling
16. Histogram
17. MSE and voting
C. Conclusion