5mo ago

MapTCHA, the open source CAPTCHA that improves OpenStreetMap

FOSDEM 2025 - MapTCHA, the open source CAPTCHA that improves OpenStreetMap

Repo: https://github.com/ciupava/maptcha_dev

I didn't make this I just wanted to share here before I add it to my weekly urbanism roundup newsletter https://urbanismnow.com/

Geospatial @mander.xyz

fossilesque @mander.xyz

5mo ago

MapTCHA, the open source CAPTCHA that improves OpenStreetMap

fosdem.org /2025/schedule/event/fosdem-2025-5879-maptcha-the-open-source-captcha-that-improves-openstreetmap/

Technology @lemmy.world

Thomas2024 @feddit.org

5mo ago

FOSDEM 2025 - MapTCHA, the open source CAPTCHA that improves OpenStreetMap

fosdem.org /2025/schedule/event/fosdem-2025-5879-maptcha-the-open-source-captcha-that-improves-openstreetmap/

OpenStreetMap Italia Community @feddit.it

damtux @feddit.it

6mo ago

MapTCHA, un captcha open source che migliora OpenStreetMap

fosdem.org /2025/schedule/event/fosdem-2025-5879-maptcha-the-open-source-captcha-that-improves-openstreetmap/

22 comments

“Click on the images where the red outline is clearly marking a building”
Gonna be honest, accessibility for those with altered color vision is gonna need some work.
- It shouldn't be that bad to implement alternate colors.
  
  better yet, make it a shifting line. Should be trivial to spot if the line is shifting through all the chroma and lux values.
I wish you could say "I'm not sure" because I feel bad getting them wrong 😭
- Don't let perfect be the enemy of good
Are all the demo images supposed to be 'incorrect'? 'Cause your outlines are all crooked, they look much worse than e.g. Microsofts building outlines and of course proper manualy made ones
- It should be (according to the video) but maybe sometimes you get an all bad set?
I'm legally blind and just tried the demo and it's god awful.
Edit: spelling
- How does one become illegally blind?
  
  LOL, I didn't even notice that. I guess file a false report with your government. And somehow get it accepted as being true.
Their html is awful. They need to start over. This is bad.
On Firefox on a tablet, vertical is okay but often there's nothing outlined in the picture. In landscape the picture covers the top half of the buttons.
link to the demo https://maptcha.crown-shy.com/
This could be a great thing for osm!
There are no red lines on some of them.
This is dope as hell.
Does this actually work? Also, what happens if the bots learn to contribute to OSM?
- Also, what happens if the bots learn to contribute to OSM?
  Obligatory XKCD
  
  Never seen that one. That's good. we need that on Lemmy.
  Not even comments. So many posts here are just low effort images. Ive even seen screenshots of headlines posted without a link to the source article. And it got upvotes! Smh
- If they make good edits then.... yay?
After like 2 red boxes none of my images had red boxes. Iron fox on android
Demo doesn't work in Tor Browser
@ray @openstreetmap
Makes you wonder what people are thinking.
So many rounded corners and buildings with notched taken out of them when they clearly just have a tree over a bit of the building.

22 comments