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Originally Posted by jhowell
Hopefully you can share whatever you find out from your contact.
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I have done some more research and found something interesting. One of the books I purchased from Amazon, Tales from Earthsea by Ursula K. Le Guin, has a map near the beginning that I found to be very readable when zoomed in on my Kindle Oasis, unlike the maps in the Brandon Sanderson books I examined recently.
I looked into the files Amazon delivered to my Kindle and found something different. In that book there is a copy of the map that is a not very readable 81KB JPEG-XR file with 852x632 pixels. But there is a second copy of the same map which is a 2.4MB JPEG file with 2300x1702 pixels. That is the one that is apparently being used on my Kindle.
The metadata for that book indicates that it has "yj_hdv", which is short for Yellow Jersey (Amazon's internal code name for Enhanced Typesetting/KFX format) High Definition Visuals.
This raises some questions. Why does this book, and a few others I have found, get this special handling? And is there something publishers can do to make these higher quality images available for their books? |
I’m wondering: is the full jpeg in grayscale or color? Maybe the colorspace of the original file affects how it gets treated for e-ink devices?
I’ll ask my contact if I can share anything, but with the holiday it could be a while.