Automatic Data Capture fails completely

Added by Devin Casenhiser about 9 years ago

Hello All -- I've just tried using AMC for the first time and am having trouble getting the automatic scanning to work. I'm using the simple template that comes with the program. I can set it up, print out the questions, but when I scan it (300 dpi; .png or tiff) and use "automatic" data capture, it fails to identify any of the marks made on the exam. I've duplicated with two different scanners and using Ubuntu as well as OS X port.

So -- maybe i'm missing a step??

I do get an error after the scan that says "ERROR: No XML for ID+0/0/0+

Not sure what that refers to -- something missing from the template??

Cheers!
D


Replies (8)

RE: Automatic Data Capture fails completely - Added by Alexis Bienvenüe about 9 years ago

Please send your project directory with your scan, unless I'm afraid I won't be able to understand what's going on.

RE: Automatic Data Capture fails completely - Added by Devin Casenhiser about 9 years ago

I figured I wasn't giving enough information -- I don't know the program yet so don't even know what to tell you!

See attached.

Cheers!

test.tar.gz (169.4 kB)

RE: Automatic Data Capture fails completely - Added by Alexis Bienvenüe about 9 years ago

Thanks. On the scan, we can see the two top corner marks (circles), but not the two bottom ones. AMC needs the 4 marks on the scan to be able to analyse it.
Perhaps you don't use A4 paper? If so, edit the first line of the LaTeX source file:

\documentclass[a4paper]{article}

RE: Automatic Data Capture fails completely - Added by Devin Casenhiser about 9 years ago

Yes! That solves it:

I've replaced [a4paper] with [letterpaper] and scanning now works.

Cheers!
Devin

RE: Automatic Data Capture fails completely - Added by Devin Casenhiser about 9 years ago

And thanks for the very quick assistance!

RE: Automatic Data Capture fails completely - Added by Philipp von Klitzing over 8 years ago

Yesterday I saw something similar: 2 of my 8 paper ballots, scanned for faster speed in a 90 degree angle, were not auto-rotated by the Fujitsu scanner driver. AMC 0.550 (yes, stock Ubuntu installation) refused to recognize these two. Some I thought I had read that AMC would not mind about the page orientation, but obviously it does - right?

RE: Automatic Data Capture fails completely - Added by Alexis Bienvenüe over 8 years ago

It should handle the 90° rotation automatically with a recent version.
You can install one easily on Ubuntu using one of AMC's PPAs (see for ex. this one)

RE: Automatic Data Capture fails completely - Added by Philipp von Klitzing over 8 years ago

Brilliant, exactly what I needed!

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