mzucker

40 ms·

1.
Show HN: Perspective recovery of text with Python+OpenCV(mzucker.github.io)
11 points by mzucker 10y ago|1 comments
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by mzucker 10y ago
It's actually easy to keep the lines out -- my challenge was to try to keep them in! Just a matter of shifting thresholds around.
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Show HN: Python program to clean up handwritten notes(mzucker.github.io)
80 points by mzucker 10y ago|4 comments
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by mzucker 10y ago
Cool - will check it out!
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by mzucker 10y ago
Hence the tagline on the blog: "Why do it by hand if you can code it in just quadruple the time?" :)
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by mzucker 10y ago
Pretty sure focal length would affect things as you say, but also physical dimensions matter too. My program assumes fixed focal length and then picks the page dimensions that work with the assumed focal length -- almost certainly not the c
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by mzucker 10y ago
Yep, might just work out of the box -- give it a shot!
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by mzucker 10y ago
Yep, I'm still waiting to use ceres for something - I didn't end up using it on my image approximation project https://mzucker.github.io/2016/08/01/gabor-2.html because it doesn't work well wi
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by mzucker 10y ago
The main rationale is removing redundant degrees of freedom -- since the page is allowed to rotate freely, the edges of the page can still move around plenty.
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by mzucker 10y ago
That sounds like a good idea and pretty straightforward to implement -- now I almost wanna try it...
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by mzucker 10y ago
Thanks for the feedback, everyone -- happy to answer questions here or in the Disqus comments on my blog.
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by mzucker 10y ago
Author here - woke up this morning and saw a big bump in site traffic which led me back to HN -- nice to see folks are reading! Happy to answer any questions here or in the Disqus comments on my blog.