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Old 03-11-2010, 07:32 AM   #6
brookman
n00b
brookman has learned how to buy an e-book online
 
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Posts: 19
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Join Date: Oct 2008
Location: Switzerland
Device: Sony PRS-505, iRex DR800SG
Thanks for the information.
lucone: Copying a folder of images to the "image" folder or "books" folder doesn't work. It is not recognized as a collection but as single files...

Out of boredom I started to create my own simple java converter tool yesterday. It takes png/jpg/gif/cbz/zip/folders (or a mix of them), crops white borders, rotates landscape images, re-sizes the images and converts them to gray-scale pngs (256 colors). The result is quite good and fast (multi-threaded). But to further improve file size and loading speed, I would like to quantize to 16 colors. To archive this, I should know the exact native color palette of the device. Otherwise the reader might perform another dithering. Is there a detailed specification?

In a next step I should maybe convert the images to eReader, ePub or PDF. This should have a positive impact on:
- Possibility to read as a book -> Page turn will be possible
- Copy speed -> 1 file instead of 5000
- Loading speed -> No automatic thumbnail generation

I don't have too much experience with those file formats, but there seem to be a java library for epub generation.
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