MobileRead Forums - View Single Post - Need to know Kindle Keyboard supported greyscale values.

NiLuJe · 02-15-2015, 04:05 PM

Please post links (or just attach them) to your results instead of inlining them, Drib's moderating broom swiped your images before I could take a look at them

.

Not sure why you're using a few different softwares, so let's say if you were using GIMP all along:

* Crop/Compose/Scale
* Greyscale
* Remap to eInk palette w/ FS dithering
* Re-Greyscale [by which I mean Image > Mode > Greyscale] (might be important, otherwise the PNG is saved as a 16c, not 8-bit, which upsets some FW versions).
* Save as PNG

Also, unless you have some very specific needs, I'd recommend playing with the levels in a real colorspace, *before* greyscaling everything.

02-15-2015, 04:05 PM	#8
NiLuJe BLAM! Posts: 13,506 Karma: 26047202 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	Please post links (or just attach them) to your results instead of inlining them, Drib's moderating broom swiped your images before I could take a look at them . Not sure why you're using a few different softwares, so let's say if you were using GIMP all along: * Crop/Compose/Scale * Greyscale * Remap to eInk palette w/ FS dithering * Re-Greyscale [by which I mean Image > Mode > Greyscale] (might be important, otherwise the PNG is saved as a 16c, not 8-bit, which upsets some FW versions). * Save as PNG Also, unless you have some very specific needs, I'd recommend playing with the levels in a real colorspace, before greyscaling everything. Last edited by NiLuJe; 02-15-2015 at 04:10 PM.