4 ms·

Ok i understand: * how to convert to grayscale * how to rotate The rest of this makes abstract sense, but not any sense wrt "i can write code to do it". As a

Ok i understand: * how to convert to grayscale * how to rotate The rest of this makes abstract sense, but not any sense wrt "i can write code to do it". As another poster said - its "draw the rest of the owl". It would be nice if someone knows about a nice annotated bit of code that starts from picture and ends at "return data;".

guhidalg 4y ago
It really is draw the rest of the owl, here's a good place to start https://en.wikipedia.org/wiki/Feature_(computer_vision)#Detection https://en.wikipedia.org/wiki/Feature_(computer_vision)#Dete... In computer vision there is no magic bullet, you will have to sink deep into the details.
- sophacles 4y ago
  Here's an idea - instead of assuming I'm being lazy and looking for a magic bullet why don't you consider this: I think this QR code thing might be a great example of a tractable, relatively small problem that lets me sink my teeth into the computer vision stuff that usually is presented in a very abstract way. In order to do that efficiently, a nice annotated codebase would help a lot. So back to the question: Do you know of any such codebases?
  - trevorhlynn 4y ago
    This paper (https://link.springer.com/chapter/10.1007/978-3-030-57058-3_34 https://link.springer.com/chapter/10.1007/978-3-030-57058-3_...) might help and is available on github (https://github.com/nimiq/qr-scanner https://github.com/nimiq/qr-scanner).
  - guhidalg 4y ago
    It's not a small problem, I'm just warning you. Check the chromium source for their shape detection API: https://source.chromium.org/chromium/chromium/src/+/main:services/shape_detection/ https://source.chromium.org/chromium/chromium/src/+/main:ser...
ajhurliman 4y ago
Here's a link that shows how to normalize (python/ openCV is great for image processing): https://www.delftstack.com/howto/python/opencv-normalize/ https://www.delftstack.com/howto/python/opencv-normalize/ If you want to dive into computational photography/ computer vision some more, here's a great class for it: https://www.udacity.com/course/introduction-to-computer-vision--ud810 https://www.udacity.com/course/introduction-to-computer-visi...
- sophacles 4y ago
  Oh cool - thanks!

guhidalg 4y ago

It really is draw the rest of the owl, here's a good place to start https://en.wikipedia.org/wiki/Feature_(computer_vision)#Detection https://en.wikipedia.org/wiki/Feature_(computer_vision)#Dete... In computer vision there is no magic bullet, you will have to sink deep into the details.

sophacles 4y ago
Here's an idea - instead of assuming I'm being lazy and looking for a magic bullet why don't you consider this: I think this QR code thing might be a great example of a tractable, relatively small problem that lets me sink my teeth into the computer vision stuff that usually is presented in a very abstract way. In order to do that efficiently, a nice annotated codebase would help a lot. So back to the question: Do you know of any such codebases?
- trevorhlynn 4y ago
  This paper (https://link.springer.com/chapter/10.1007/978-3-030-57058-3_34 https://link.springer.com/chapter/10.1007/978-3-030-57058-3_...) might help and is available on github (https://github.com/nimiq/qr-scanner https://github.com/nimiq/qr-scanner).
- guhidalg 4y ago
  It's not a small problem, I'm just warning you. Check the chromium source for their shape detection API: https://source.chromium.org/chromium/chromium/src/+/main:services/shape_detection/ https://source.chromium.org/chromium/chromium/src/+/main:ser...

ajhurliman 4y ago

Here's a link that shows how to normalize (python/ openCV is great for image processing): https://www.delftstack.com/howto/python/opencv-normalize/ https://www.delftstack.com/howto/python/opencv-normalize/ If you want to dive into computational photography/ computer vision some more, here's a great class for it: https://www.udacity.com/course/introduction-to-computer-vision--ud810 https://www.udacity.com/course/introduction-to-computer-visi...

sophacles 4y ago
Oh cool - thanks!