ter haar romeny, casia 2015 scale-space the retina measures on many resolutions simultaneously

ter Haar Romeny, CASIA 2015

scale-space

The retina measures on many resolutions simultaneously

ter Haar Romeny, CASIA 2015

Scale induces an image hierarchy.

original Gradient (scale 4 pixels)Gradient (scale 1 pixel)

ter Haar Romeny, CASIA 2015

ter Haar Romeny, CASIA 2015

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

ter Haar Romeny, CASIA 2015

The observation scale:

ter Haar Romeny, CASIA 2015

ter Haar Romeny, CASIA 2015

ter Haar Romeny, CASIA 2015

ter Haar Romeny, CASIA 2015

ter Haar Romeny, CASIA 2015

ter Haar Romeny, CASIA 2015

ter Haar Romeny, CASIA 2015

ter Haar Romeny, CASIA 2015

ter Haar Romeny, CASIA 2015

Be careful with the implicitassumption of a model.

• Is this a square?• This is a square• This is not a square

Noise is part of the geometryif no info is given of theunderlying model or the noise

ter Haar Romeny, CASIA 2015

‘Spurious resolution’: artefact of the wrong aperture

What is the best aperture?

Aliasing, partial volume effect