github.com

Show HN: Using 2D DFT, dithering, etc. to maximize eInk manga image quality

seam_carver · 70 points · 19 comments · 2 days ago · Open original

Kindle Comic Converter optimizes black & white (or color) comics and manga for E-ink ereaders like Kindle, Kobo, ReMarkable, and more. Pages display in fullscreen without margins, with proper fixed layout support. Output works great in KOReader. Full details on what KCC does is in the readme with plenty of photos! KCC has been under continuous development since 2012 and has code sign on both Windows and macOS. Also available on Linux. -the current kcc dev

Comments

5 preview comments · loading full thread
seam_carver2 hours ago

KCC best features: 1) filesize optimization. Think 600 to 100 mb after optimization per volume depending on source and settings. Does it by downscaling and dithering from 256 to 16 shades of gray (e.g. 8 bit to 4 bit) 2) black level correction. You need pure blacks in eink. Dark gray looks ok on paper and normal screens but not eink. Does it with histogram manipulation 3) semi automatic 2 page spread joining. spreads can be autorotated or not. 4) rainbow removal on kaleido 3 color eink with 2D discrete Fourier transform

smusamashah3 hours ago

Hi, Could this have been a KOReader plugin too where all this processing etc is done on KOReader/Kindle itself instead of another machine?

xyzsparetimexyz10 hours ago

Comic books and manga are amusingly amount the least digitizable mediums as you have the choice of good resolution but an unpleasant reading experience with lit screens on a desktop, laptop, tablet or phone and low res or lack of spreads on an e reader. Even more so when you're missing out on colour.

elli0t-yash10 hours ago

I read a lot of manga and comic since my childhood but never even once in my life I have able to enjoy manga on tablet/mobile as much as I enjoy them as physical volume. But looking forward to use Kindle Comic Converter

maeln4 hours ago

I used to use KCC when I had a Kindle and it was great ! But now that I have a android based e-reader, I use Mihon