Ghostscript is good for working with PDFs containing text; yours likely
have images but no no text. Using something like pdfimages to extract
the raster-images from a PDF will give you what you want, without any
unwanted rescaling.
Kevin Carlson wrote, On 2010-09-24 12:37:
We receive PDF files which appear to contain scanning artifacts which
severely impact recognition. Specifically, under magnification you
can see regularly spaced "notches" and corresponding "bumps",
especially noticeable with vertical lines.
Currently I'm using Ghostscript to convert the files to TIFF for
processing, any Python-based alternatives out there? Ultimately would
like to do all cleaning and converting using Python, with "Pytesser"
to do the OCR.
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