1. ter Haar Romeny, CASIA 2015 scale-space The retina measures on many resolutions simultaneously

2. ter Haar Romeny, CASIA 2015 Scale induces an image hierarchy. original Gradient (scale 4 pixels)Gradient (scale 1 pixel)

3. ter Haar Romeny, CASIA 2015

4. Scale is embedded in the task: do you want the leaves or the tree?

5. ter Haar Romeny, CASIA 2015 The observation scale:

6. ter Haar Romeny, CASIA 2015

14. Be careful with the implicit assumption of a model. Is this a square? This is a square This is not a square Noise is part of the geometry if no info is given of the underlying model or the noise

15. ter Haar Romeny, CASIA 2015 ‘Spurious resolution’: artefact of the wrong aperture What is the best aperture? Aliasing, partial volume effect