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ldolse · 09-04-2010, 08:19 PM

Manipulating the images is outside Calibre's scope. You'd need to unzip/explode the epub, then use some image manipulation program to give the files higher contrast, etc. One which has batch manipulation like photoshop would be helpful.

09-04-2010, 08:19 PM	#2
ldolse Wizard Posts: 1,337 Karma: 123455 Join Date: Apr 2009 Location: Malaysia Device: PRS-650, iPhone	Manipulating the images is outside Calibre's scope. You'd need to unzip/explode the epub, then use some image manipulation program to give the files higher contrast, etc. One which has batch manipulation like photoshop would be helpful.