Digitizing photos of whiteboards using the command line
Dev tools
image processing script
SHOW HN2014
Digitizing photos of whiteboards using the command line
Digitizing photos of whiteboards using the command line
gist.github.comHow HN took it
9 positive, 8 neutral or asking, 1 mixed, 1 critical, out of 19 comments about the project. Thread score +0.39.
Execution: 4 for, 0 againstPerformance: 1 for, 1 againstIdea: 1 for, 0 against
The thread, comment by comment
Each row is a top-level comment and its replies, in HN's order. Select a cell to open that comment on HN.
positive neutral or mixed critical about another commenter or something else the maker
What HN said
What people liked
Results look much cleaner than original photos
From 3 comments
Looks much better than the original photos. On a slightly related note, camscanner, an app for android (and IOS?) does something similar, but can also correct for the angle at…
ollyfg on HNvery nice, never experimented with modifying images via command line but was able to understand the process via shell parameters. also photos of whiteboards always come out…
BorisMelnik on HNGreat work, thanks heaps for this! This'll help me clean up files quickly and easily, as we do the same thing a lot of the time too :) NB: This works fine on the Windows version…
NamTaf on HN
Useful technique for cleaning scans and drawings
From 2 comments
Nice. Works well for drawings/comics. http://imgur.com/a/Xvu7K
mjhoy on HNAwesome, thanks!
tsenkov on HN
Objections
Fails or performs poorly on low-resolution images
From 3 comments
I got excited when i saw the results since they looked awesome, such that I thought I could replace my quick&dirty transparent GIFs script[1], but apparently it has issues with…
diegocr on HNI'm having the same issue as magus: https://gist.github.com/lelandbatey/8677901#comment-1204432
unclesaamm on HNIt's because you did not use the full resolution pictures, apparently.
ekianjo on HN
Gist-compressed sample images produced poor output
From 2 comments
github compressed the upload, get the originals from links from his response: https://gist.github.com/lelandbatey/8677901#comment-1204480
fuzzythinker on HNHere's the comment I posted on the Gist, copy-pasted to here: @molven, @vibragiel: Wow, I feel more than a bit ridiculous after looking into this. Turns out, those original…
lelandbatey on HN
Requests
Add OCR to extract text
From 1 comment
Nice idea, would it be possible to do some OCR at the end?
Synergyse on HN
Correct perspective angle like CamScanner
From 1 comment
Looks much better than the original photos. On a slightly related note, camscanner, an app for android (and IOS?) does something similar, but can also correct for the angle at…
ollyfg on HN
Support for blackboards
From 1 comment
I'd like to see similar script for blackboards (greenboards?).
n3t on HN
Questions
How to handle small images
From 1 comment
For those of you who would like to use this on smaller images, play around with "DoG:15,100,0". This string refers to implementing a difference of gaussian filter with inner…
icegreentea on HN
Workflow for attaching whiteboard images to tasks
From 1 comment
I'm doing an online whiteboard (spacedeck.com) and always wondering how to bridge the analog/physical world of whiteboard scribbles and sticky notes and software. How would you…
mntmn on HN
Alternatives named
iOS and Android scanning apps
From 2 comments
There's a whole heap of iOS 'scanning' apps that do this sort of thing device-side.
NamTaf on HNOr Android.
dirkgently on HN
unpaper
From 1 comment
Take a look at unpaper instead. It was designed for postprocessing scanned documents. The only thing it does not do is the Evernote upload: https://github.com/Flameeyes/unpaper
dfc on HN
Tesseract OCR
From 1 comment
Take a look at Tesseract, which last time I looked was the best codebase to use in this area. It's part of Google's open source multilingual OCR suite, which is in two parts…
contingencies on HN
CamScanner
From 1 comment
Looks much better than the original photos. On a slightly related note, camscanner, an app for android (and IOS?) does something similar, but can also correct for the angle at…
ollyfg on HN