1. Optic flow from dynamic anchor point attributes a feasibility study Bart Janssen

2. Optic Flow Medical Image Registration Video Processing / Coding Robotics

3. The notion of scale: Objects live at different scales Solution? Look at all scales simultaniously

4. Scale Space in Human Vision The human visual system is a multi-scale sampling device The retina contains receptive fields; groups of receptors assembled in such a way that they form a set of apertures of widely varying size.

5. Gaussian Scale Space Scale x y

6. The Aperture problem: Constant brightness assumption is insufficient

7. The Aperture problem: Constant brightness assumption is insufficient Solution? Use points were the apperture problem is non- existent

8. Proposed Method

9. Outline Introduction Anchor Points Stationary Reconstruction Flow Reconstruction

10. Anchor points Singular Points of a Gaussian scale space image Fold catastrophe

11. Static Properties Differential structure at the location of a Singular Point by innerproduct of the image with derivatives of the Gaussian

12. Dynamic Properties

13. Outline Introduction Anchor Points Stationary Reconstruction Flow Reconstruction

14. Stationary reconstruction

16. Optic flow reconstruction

17. Conclusions

18. Differential Structure

19. Error Measure