MobileRead Forums - View Single Post - Sony Reader for PC -- not rendering 16-color png

Tex2002ans · 10-01-2013, 07:06 AM

grannyGrumpy, I just took a look at your test EPUB in your first post... Perhaps it might be best if you stick a few different types (4 gray, 16 gray, 256 gray) of the same exact image in the EPUB. This would make it easier to A/B/C compare on a device.

I specifically remember running into a serious "banding" problem on my Nook with some high resolution formulas which I reduced to 4-color grayscale (I assume 2-bit PNG?)

I will have to hunt down that EPUB and get a lot more details.

(Hopefully) tomorrow, I can get post more thorough testing/posting of my grayscale PNG samples.

10-01-2013, 07:06 AM	#19
Tex2002ans Wizard Posts: 2,306 Karma: 13057279 Join Date: Jul 2012 Device: Kobo Forma, Nook	grannyGrumpy, I just took a look at your test EPUB in your first post... Perhaps it might be best if you stick a few different types (4 gray, 16 gray, 256 gray) of the same exact image in the EPUB. This would make it easier to A/B/C compare on a device. I specifically remember running into a serious "banding" problem on my Nook with some high resolution formulas which I reduced to 4-color grayscale (I assume 2-bit PNG?) I will have to hunt down that EPUB and get a lot more details. (Hopefully) tomorrow, I can get post more thorough testing/posting of my grayscale PNG samples. Last edited by Tex2002ans; 10-01-2013 at 07:10 AM.