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Using AMC with annotated pdfs
Added by Matthew Leingang over 8 years ago
I just installed AMC and I am very excited to use it for all our grading projects. I ran into a snag today with a workflow involving manual scoring of scanned quizzes.
I created a quiz with four open questions and a code block. Prior to scoring I scanned all the exams as PDFs into my Google Drive. Then I opened the PDFs in my tablet with an app called PDFExpert. It allows me to make or stamp marks on the PDF neatly and reversibly, instead of scribbling with a pen. I used the app's pen tool to fill in the box for the score.
Then I fed the annotated PDFs into AMC in the data capture tab. Unfortunately, it stripped away/ignored/failed to notice all my annotations, resulting in unscored quizzes.
I thought that maybe it was because the annotations are objects on top of the scanned image. But even when I flattened the PDF by converting to PostScript and back to PDF, AMC did not recognize the marks I added.
I'm wondering if there's another way to flatten the PDF so AMC sees the annotations as no different from pencil marks, or if others have run into this issue before.
RE: Using AMC with annotated pdfs - Added by Alexis Bienvenüe over 8 years ago
But even when I flattened the PDF by converting to PostScript and back to PDF
PostScript is not flattened, just converted. Try converting them to PNG, or use Edit/Preferences/Scan/Scans conversion/Force conversion on (ticked).
RE: Using AMC with annotated pdfs - Added by S. McKay over 8 years ago
I use AMC to grade on my ipad, and have run into this problem. There is a way to set options in AMC to do this correctly, but I don't remember what it is. The only way I have found to truly and reliably flatten my annotated pdfs is to convert them to jpg (or png). I wrote a little script in python that I use to do this, but of course you can do it by hand also. The fastest way (that I have found) to flatten the pdfs is with ghostscript. I will attach my script to this post.
Note that once the pdfs have been converted to jpgs, you can load them into AMC directly - you do not need to convert back to pdf first.
ConvertToJpg.py (1.1 kB)
RE: Using AMC with annotated pdfs - Added by Matthew Leingang over 8 years ago
Thanks for the replies! Alexis' solution didn't work for me, but maybe I applied it wrong. I will try again next time. McKay's script worked perfectly.