Ancestors

Written by Guy Dupont on 2025-01-22 at 17:48

Playing with the idea of "different perspectives on the same story"!

A QR code that sends you to a different source based on the angle.

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Written by Christian Walther on 2025-01-22 at 22:46

@gvy_dvpont Got me thinking… can it be done without the lens? This one seems to work!

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Toot

Written by Nemo Thorx on 2025-01-24 at 04:37

@isziaui @gvy_dvpont my experiments in multi-QR imagery were based on colours but I never considered the option of the same code being decoded different ways based on conditions at the time of decoding.

Here is the concept of 42 represented three ways in QR ("6x9" "XLII" and "Forty-two" and then each QR turned into a RGB channel and combined - my phone will identify it as a QR code without too much trouble, but always picks out the XLII version (green channel I think - I did most of this a dozen years ago so memory and notes are poor), but maybe with different image colour tweaking, the same phone could pick different QR codes in different lighting conditions (or different phones picking different codes?)

I've also done animated gifs (with many more forms of 42) and my phone will capture a frame and decode it. It's a random and I've not tested in depth to see if there is any bias to which frames it gets (or avoids)

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Descendants

Written by Christian Walther on 2025-01-24 at 07:54

@nemothorx @gvy_dvpont Cool!

I’ve thought about doing a red/cyan one to scan through anaglyph 3D glasses.

My iPhone doesn’t recognize your colored one at all. Something is weird about it though, shouldn’t the bottom right alignment dot be the same in all channels?

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Written by Nemo Thorx on 2025-01-24 at 08:28

@isziaui @gvy_dvpont it's ver1 QR - only 21x21. There is no bottom-right alignment section. The green channel code I used can be generated with qrencode -l H -v 1 XLII -o XLII.png

qrencode from https://fukuchi.org/works/qrencode/index.html.en (via debian package for me)

My scanning is on an iPhone 14 pro - it usually finds it within a few seconds, but sometimes takes several, and occasionally just never finds it till I change something (relative size, monitor brightness, angle, etc)

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Written by Christian Walther on 2025-01-24 at 11:18

@nemothorx Ah, now I understand – there’s a fourth code in the alpha channel! It works once I ignore that.

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