>>453902
>downsizing would actually help you achieve degradation

>i guess i'm not really understanding what the issue is

No shit, it works in in exactly the opposite way; reducing the size of an image is how line art and other images are cleaned up and an integral part of the process of creating art for print media back in the day.

Easiest way to imitate copy/fax machine degradation digitally is to mess with light values, contrast, exposure, etc , since most photocopying artifacts and distortions are the result of the actual photographic part of the process and strong light was what allowed them to reject all but text and other deliberate markings....every generation was slightly overexposed and the contrast boosted so details like fine lines, dots and sharp corners would gradually melt away.
At the same time, if you adjusted the machine darker to pickup those details any small dark areas, erased pencil lines and even the shadows of paper texture would get reproduced, and subsequent attempts to lighten them back out by re- copying with higher contrast wouldn't get all of them, leaving characteristic splotchiness.

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Simulating Generation Loss in PDFs