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Stijn Oomes @stijnoomes.bsky.social · 4d

In the 5th session today I discussed some of the computer vision systems that I have developed. One nice result is that I determined the height of the National Monument on Dam square in Amsterdam from a photograph taken by a drone.

You can still join for free at www.skool.com/geometric-vi...

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Stijn Oomes @stijnoomes.bsky.social · 8d

Ik ben vooral fan van de achtergrond.

Stijn Oomes @stijnoomes.bsky.social · 11d

Today was the 4th of 7 sessions and I have addressed the core topic of my research: visual objects.

If you want to follow along, you can still join for free at lnkd.in/e4UsJjFr

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Reposted by Stijn Oomes

Flip Phillips @flipphillips.com · 23d

We love the retina. A tractable brain. Learn how it works and you understand infinitely more about the rest of the nervous system.

This structural image - <chefs kiss>

Anna La Torre @latorrelab.bsky.social · 23d

#FluorescenceFriday: a weekly reminder that behind the data, there are moments of pure wonder. This is why we do what we do. And the #retina is so uniquely beautiful!

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Stijn Oomes @stijnoomes.bsky.social · 24d

Ik geef toe dat het een wilde hypothese is maar ik heb de indruk dat het vaker boven de 25 graden is in het weekend dan door de week.

Vooral in de zomer inderdaad.

Full disclosure: ik ben geen fan van hitte.

Stijn Oomes @stijnoomes.bsky.social · 24d

Even een vreemde vraag. Kun je zien of het in het weekend gemiddeld warmer is dan door de week?

Stijn Oomes @stijnoomes.bsky.social · 25d

You do not need to know the distance or size of the spheres.

The classical method uses the two vanishing points of the projection of an A4 sheet of paper.

If you want to know the formula, you can still join for free at www.skool.com/geometric-vi...

A geometric approach to visual perception and computer vision.

Reposted by Stijn Oomes

Thony Christie @rmathematicus.bsky.social · 25d

René Descartes mechanics and cosmology #histsci

thonyc.wordpress.com/2025/09/17/f...

Left: engraved portrait of René Descartes
Right: title page of Principia Philosophiæ

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Stijn Oomes @stijnoomes.bsky.social · 25d

Below you can see me gesturing that my new method for finding the focal length of a camera is really close to the classic result.

I have derived a simple formula for the focal length of a camera from the elliptical projections of spheres only.

Stijn Oomes @stijnoomes.bsky.social · Sep 11

You can still sign up for free at www.skool.com/geometric-vi...

A geometric approach to visual perception and computer vision.

Stijn Oomes @stijnoomes.bsky.social · Sep 10

The 2nd video for my Skool channel is on geometry.

I applied Rational Trigonometry created by Wildberger to derive simple expressions for what Euclid called 'visual cones' and Gibson called 'visual solid angles'.

You can see that I am looking up to them.

www.skool.com/geometric-vi...

Stijn Oomes @stijnoomes.bsky.social · Sep 4

Everything went smoothly while re-recording the 1st video for my Skool channel.

Except for claiming that vision is fundamentally simple, I also talked about cognitive models and argued that future AI needs explicit visual world models.

A person's head in silhouette looking at a car model and thinking about it visualised by a thought bubble.

Stijn Oomes @stijnoomes.bsky.social · Sep 3

A geometric approach to visual perception and computer vision.

Stijn Oomes @stijnoomes.bsky.social · Sep 3

I have been recording the first video for my Skool channel today. It turned out that the 🎤was not properly connected. So, I practiced recording my first video today.

Stijn Oomes @stijnoomes.bsky.social · Aug 28

I opened my own school. Below is an invite to a free private online community on the theme of geometric vision.

For those who can join, I will give a first course on my research results every Wednesday over the next 7 weeks.

Check it out via www.skool.com/geometric-vi...

A geometric approach to visual perception and computer vision.

Stijn Oomes @stijnoomes.bsky.social · Aug 27

Although the human visual system is hierarchically organized, the processing seems to be from coarse to fine, exactly the opposite of CNNs.

Stijn Oomes @stijnoomes.bsky.social · Aug 22

We should teach them more cognitive science!

Stijn Oomes @stijnoomes.bsky.social · Aug 22

From a practical engineering point of view this might be a useful approach. From a scientific perspective it will not bring us any closer to understanding how vision actually works.

Stijn Oomes @stijnoomes.bsky.social · Aug 22

Thanks!

Stijn Oomes @stijnoomes.bsky.social · Aug 22

Who is the presenter?

Reposted by Stijn Oomes

Stijn Oomes @stijnoomes.bsky.social · Jul 31

Unless Wikipedia's translation is wrong it is literally in the 1st postulate of Euclid’s Optics:

Let it be assumed
1. That rectilinear rays _proceeding from the eye_ diverge indefinitely.

Stijn Oomes @stijnoomes.bsky.social · Jul 31

Unless Wikipedia's translation is wrong it is literally in the 1st postulate of Euclid’s Optics:

Let it be assumed
1. That rectilinear rays _proceeding from the eye_ diverge indefinitely.