3dpcp/3rdparty/gocr-0.48/doc/examples.txt

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2012-09-16 12:33:11 +00:00
Note: this info is related to example files, used to test gOCR. As of this
writing, these files are not available to non-developers. So, if you aren't
a developer, forget about this file.
EXAMPLE FILES
1. Scanning
The examples can be scanned from anything; when looking for something, try to
have in mind the kind of tests you are expecting to do: if you're testing
accents recognition, look for texts in portuguese, french, etc. (pretty obvious,
but keeping this in mind will help to have a large gamma of files covering
different kinds of tests).
If you're not interested in testing DPIs, scan at 150 or 300dpi.
If you're not interested in testing the dust removal, cleaning, etc, functions,
do the best scan you can. Usually increasing brightness and contrast will
provide a sharper, cleaner image.
Save the image in a supported format: for example, pgm or jpg. If a compression
will result in a significant reduction of size, compress the image. BZIP2
usually is the best compressor around, but gzip is more popular in the unix
world. In the wintel world, people use ZIP, and usually will have to search for
an application capable of opening .gz or .bz2 (though WinZIP opens at least the
former).
2. Sorting
To help others to find the files they are looking for, the examples/ directory
is divided in several other directories, which may be subdivided. When
uploading a new example, look for the most suitable location. Depending of the
directory, you probably will name your file with interesting info: for example,
when uploading a image with all the characters of the foo font, the best thing
to do is to place it at examples/fonts/foo.jpg.
3. "Translation"
Along with the image file, upload a text file with the expected output. Be
careful with this file: it must resemble the original text as much as possible.
Don't add extra new lines (\n), keep hyphenized words, etc. Name this file with
the same name of the image file.
In the beginning of the text file, you should provide comments, to help
searches. Use the following sample:
# Comments
# DPI:
# Colors:
# Image size (colsXrows):
# Fonts:
# Font sizes:
# Layout form:
# Number of pictures:
# Language:
# Quality of scan:
# Non-ASCII characters:
# Extra:
Check existing examples to see what people have been doing.
Any lines that begin with # will be considered comments, so you may use several
lines for comments or add new fields. Though gOCR itself doesn't depend on, and
won't use, this file, it will be used by scripts.
4. Other sources (WEB)
- http://www.clerkweb.house.gov/elections/elections.htm (Nov2002)
PDF-files with lot of tables