05-08-2018, 12:47 PM | #1 |
hopeless n00b
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Device: PW4, PW3, Libra H2O, iPad 10.5, iPad 11, iPad 12.9
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Improve image rendering/dithering on Kindle
Help. I just installed the latest nightly build (koreader-kindle-arm-linux-gnueabi-v2015.11-1654-g666c9f1_2018-04-12) in order to read cbz manga on my Paperwhite 3 Manga without having to convert to azw3 first.
Program works but the images have noticeable gray blocks around lines as well as color banding. Thought it might be an issue with the cbz file so I tried with a Kindle purchased manga (download and transfer via USB method) which I then repackaged to cbz (DeDRM - KindleUnpack - zip). Same issue. The cbz viewed via KOReader exhibits gray blocks and color banding while the DeDRM'd azw3 rendered beautifully on the Kindle's native reader. Are there any tweaks available to improve image rendering or image dithering in KOReader? Thanks in advance! |
05-08-2018, 03:13 PM | #2 |
Wizard
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There's an issue about the subject here: https://github.com/koreader/koreader/issues/1833
NiLuJe posted a command for doing the dithering on PC: https://github.com/koreader/koreader...ment-186613568 I wonder if this is still an issue on Kobo… |
05-08-2018, 04:39 PM | #3 | |
hopeless n00b
Posts: 5,111
Karma: 19597086
Join Date: Jan 2009
Location: in the middle of nowhere
Device: PW4, PW3, Libra H2O, iPad 10.5, iPad 11, iPad 12.9
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Quote:
Alas, was hoping to avoid preprocessing via PC. If I had to do that anyway, might as well just convert to azw3 with Kindle Comic Converter or Calibre. |
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