[Tex2002ans]

Is this just going to be for your own personal usage? Or is this for an actual book?

Was this a bunch of inline images instead of Arabic text? (I know I have run across similar problems with crappy conversions of Greek text.)

As you know, trying to UPSCALE things will result in some subpar images... but if you just needed something a little quick/dirty, I dabbled in this for a little and came up with this basic workflow.

Step 1

Original Image:



First you upscale the image:

convert test2.png -scale 1000% test2[Scaled1000].png

Note: You can insert any % there. 1000% makes it 10x larger.

Step 2

Then you can adjust the contrast slightly:

convert test2[Scaled1000].png -contrast-stretch 3% test2[ContrastTweak3].png

Note: You can insert any % there. I found that anywhere from 1-5% seemed decent. Going beyond that distorted the text too much.

Step 3

Then you can scale the image down:

convert test2[ContrastTweak3].png -scale 40% test2[ScaledDown40].png

Note: You can use whatever % or size you want here. This results in a final image that is 4x larger.

Step 4

If you wanted to convert on an entire folder of PNGs, just go to the folder and run this:

convert *.png -scale 1000% -contrast-stretch 3% -scale 40% -set filename:fname %t_tn +adjoin %[filename:fname].png

Note: If you have a ton of images, probably better to run mogrify or come up with some sort of batch file. I read about the convert -set filename method here: https://www.imagemagick.org/Usage/ba...ogrify_convert

You could also probably introduce more steps in between (different resizing filters, etc. etc.), but I am not that familiar with that. Most of the time I am just using Imagemagick to clean up speckling in scans. :P