Hacker News Reader

playing with the demo at https://maptcha.crown-shy.com/ , I had problems recognizing the outlines, as they often were colored similar to their structure (low contrast). Some examples I couldn't find any outline at all.

Also, seeing a rectangular outlined thing from above, it's often impossible to tell if it qualifies as a building.

View on HN

Same feeling here about the demo: sometimes there is not red shape, so should I click correct or incorrect? sometimes the red shape covers two different styles of roof (I don't know if it is one or two buildings), is this correct or incorrect? sometimes the shape covers a very small thing, could be a phone box or kiosk, it's not clear compared to other buildings around, is this correct or incorrect?

I really hope such a project can thrive and be useful though, will check it again after some time!

i really need the ability to zoom in or have it larger. the default size for me (even with my browser default at 130%) is way too small for me to make anything out.

I think it would help if they used dashed line. Or another pattern that is unlikely to occur naturally.

Also, they use red for the outlines... (Red-green color blindness is the most common form.)

Reply on news.ycombinator.com