theory of vision – Stijn Oomes PhD

Visual geometry of a sphere

When you look at the photo above, what sizes do you think those 5 spheres have? If I tell you that the sheet of paper on the right is an A4. And the photo is taken in my office with the camera lying flat on the edge of my desk. Do your estimates change?

Neural networks make me uncomfortable

The main problem I have with neural networks for computer vision is that they do not give me understanding. Even the best network, that has a 99.91% accuracy on the MNIST handwritten digits dataset, can not give me any insight. It does not allow me to observe how it actually performs its classification.

Diagonals of an ellipse

I have been watching Norman Wildberger’s videos on all things mathematics for about 10 years. To say that I have learned a lot is the understatement of the decade. His most recent video is a recorded talk from July this year titled “How Chromogeometry transcends Klein’s Erlangen Program for Planar Geometries”. It is fascinating throughoutContinue reading “Diagonals of an ellipse”