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A comment on Defeating Image Obfuscation with Deep Learning. Parent comment

Re:Defeating Image Obfuscation with Deep Learning by dragonwriter on Tuesday September 13, 2016 @07:27PM (#12493080)
> Ever see those black boxes over censored documents? It's obviously better than blurring, the only information you get is the size of the box.

Actually, quite a few times in the past with that method, you've gotten the complete text, because someone uses a format that includes the text as text (like PDF) and then dropped a solid-black box over the text, which looks like the text is obliterated, but preserves the entire content in the file.

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Re:Defeating Image Obfuscation with Deep Learning by Namrog84 on Tuesday September 13, 2016 @08:26PM (#12493388)
One time in college. A teacher did something like this with hw and solutions being "hidden"/"censored". And I was easily able to get around it and have all the solutions :/
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Re:Defeating Image Obfuscation with Deep Learning by taneq on Wednesday September 14, 2016 @03:08AM (#12494731)
One of our lecturers did something similar, but with class grades. They started from a complete list of grades in Excel, and for each student, deleted all grades but that student's grades and then saved a copy.

Unfortunately, they did this without disabling the Excel feature that saved undo data in the file, so anyone in the class was able to hit Ctrl+Z a couple of times and see the entire list of grades.

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