Garbage output

[mietek]

For some PDFs, Cermine fails to determine the structure of the document, and outputs garbage.

Examples

Tested with 1.8-SNAPSHOT.

Input

• ArtemovBarzilayConstableNogin2001.pdf
• Negri2005.pdf

Output

• ArtemovBarzilayConstableNogin2001.cermxml.txt
• Negri2005.cermxml.txt

[dtkaczyk]

@mietek The garbage in these cases is related to invalid positions and dimensions of the characters in the files, which, as you noticed in issue #14, might be the outcome of some OCR process. The best way to solve this is indeed to add OCR functionality to CERMINE, which is on our long-term TODO list.

[mietek]

Thanks. I note that the PDFs in question haven’t been scanned, so I doubt the garbage is the result of an OCR process. The glyph data in the vector layer seems intact, while the character data in the text layer seems garbled. I conjecture these PDFs were not produced directly, say, by pdflatex, but rather, are the result of some conversion process gone wrong, badly.

[dtkaczyk]

@mietek Thanks for the clarification. As I am unable to solve this directly, I am closing this issue. I will leave issue #14 open to discuss everything related to OCR feature request.