Comment

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

Lost_My_Mind@lemmy.world ⁨2⁩ ⁨weeks⁩ ago

Oh no. Imagine trying to use a map app, and you have to go to the gps coordinates of the maps location, in order to solve the geocaptcha.

It sounds stupid, but thats exactly why someone will do this. We live in the dumbest timeline.

source

Sort:hotnew top

xapr@lemmy.sdf.org ⁨2⁩ ⁨weeks⁩ ago
I only read the text, didn’t watch the video, but from the text it didn’t sound like that’s what they were describing. It sounded like they will present images to people and ask them to confirm whether or not there’s an object there?

We introduce “MapTCHA”, a CAPTCHA that leverages the uncertainty of interpreting imagery with computer vision, and provides human verification for AI predictions: users are asked to identify images containing correctly interpreted objects, e.g. building outlines.

source
- adespoton@lemmy.ca ⁨2⁩ ⁨weeks⁩ ago
  The big question though is: why?
  
  CAPTCHA was implemented because machine learning was worse than people at solving the problems, so they could filter out the bots AND train their algorithms.
  
  Today, the bots are often better than the humans, so both reasons for having CAPTCHAS no longer make sense. Even user verification can be easily faked by AI now.
  
  source
  - xapr@lemmy.sdf.org ⁨2⁩ ⁨weeks⁩ ago
    I’m not sure.
    
    Perhaps getting computer vision that’s reliably better than humans costs a lot of money that a project like OpenStreetMap doesn’t have?
    
    source
    adespoton@lemmy.ca ⁨2⁩ ⁨weeks⁩ ago
    Could be… it makes sense to reinvent the wheel if the previous inventors won’t share.
    
    source
  - ubergeek77@lemmy.ubergeek77.chat ⁨2⁩ ⁨weeks⁩ ago
    They explain it in the video. They already use algorithms to detect if things are buildings or not.
    
    But if their algorithm can’t make a determination or is uncertain below a certain threshold, they send it to Maptcha to get a bulk human opinion.
    
    source