Grayskull: A tiny computer vision library in C for embedded systems, etc.

https://github.com/zserge/grayskull

by gurjeet • 9 months ago

192 18 9 months ago

github.com

ranger_danger• 9 months ago

Missed opportunity to one-up the He-Man joke from earlier :p

kazinator• 9 months ago

Did you see the "By The Power of Grayscale" submission and go digging?

gurjeet2• 9 months ago

Yes, that's exactly how I discovered it :-)

moffkalast• 9 months ago

And then you said HEY YEYAAEYAAAEYAEYAA?

gurjeet2• 9 months ago

For the curious, link to related post: By the Power of Grayscale https://news.ycombinator.com/item?id=45771151

valorzard• 9 months ago

I’d like to take this moment to say that the recent She Ra revival series on Netflix by ND Stevenson (the creator of Nimona) is pretty good, go watch it.

aadv1k3• 9 months ago

Hey, this is great :) I attempted to do something similar a while back https://github.com/aadv1k/deimos basically trying to build many of OpenCV's functions from scratch in C from first principles, though I was using stb for handling the images. I ended up putting the project on hold, primarily because I lost interest in computer vision at the time.

For a while I went deep into OCR, and built a rather rudimentary stroke width transform (https://github.com/aadv1k/swt.h) but again, the results were very hit or miss, likely because I never took the time to understand the logic behind why these functions would work.

1) Optimise many of the functions (a lot of room to use GPU, multi-threading and what not!). 2) Add new functions and improve the existing edge detection ones

I would love to know of a good resource for computer vision, the various algorithms, optimisation techniques etc. Thanks for sharing this project! Cheers

goeiedaggoeie• 9 months ago

https://github.com/spsingh37/Classical-computer-vision

spend some time to understand how CV worked before deep learning transformed it in 2012->2014. lots of those techniques are still useful

aadv1k3• 9 months ago

This is very useful, I was unable to find a simple, clean implementation of the harris corner algorithm, this might help. Appreciate it!

grep_it• 9 months ago

Computer Vision: Algorithms and Applications 2nd Edition is free to download for personal use at https://szeliski.org/Book/

aadv1k3• 9 months ago

Hey this is great! Thank you :)

rob74• 9 months ago

cf. https://en.wikipedia.org/wiki/Castle_Grayskull

adius2• 9 months ago

I basically did the same thing a few weeks ago! =) => https://flatcv.ad-si.com

It will be interesting to see what you did differently!

rmind• 9 months ago

Nice. Any plans to add support for affine transformations and perspective transformation (warp)?

adius2• 9 months ago

Definitely on the todo list, but since it is only a side project, I don't know when I'll get to it. Any contributions would be highly appreciated! =)

jamal-kumar• 9 months ago

On this tip I always found opencv to work way way faster just dropping the color depth of whatever image as such

vardump• 9 months ago

Since this is intended for embedded systems, supporting ARM DSP extensions would be beneficial. Correct me if I'm wrong, but I have not seen any compiler generate those instructions, other than through the use of intrinsics.

I would add the support if I needed the library, but I don't, at least not yet.

cestith• 9 months ago

Grayskull: A tiny computer vision library in C for embedded systems, etc.

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