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While researching your family tree, you will find textual publications use books or administrative documents. You may avoid long and annoying work or transcribing texts into GRAMPS by using optical character recognition ([http://en.wikipedia.org/wiki/Optical_character_recognition OCR]).
Here we show you how you can to work on your picture or scan of a document to make change it to into typed text !!!.
[[Category:Genealogy]]
==How this work ?==
* You picture need needs to be contrasted with have a strong contrast (black text, white backgrount), and have a good resolution.* The OCR programs read scans the picture and with forms librairies, uses a glyphs libraries to detect the characters . Those that are recognised are transformed in order to make some correspond the form to the awaited corresponding character.* dictionnaries Dictionnaries will be used for minimized to minimize errors. They make comparison between These compare the resulting words with existing words to determine the outcome and your resultguess not fully recognized words.* Some programs allow recognize bold, italic or custom fonts size.
==Using into OCR with GRAMPS== There is not a lot of OCR open sources programs, and those that exist mostly use the same backend. For ''Intelligent Word Recognition (IWR)'' or ''[http://en.wikipedia.org/wiki/Intelligent_Character_Recognition Intelligent Character Recognition (ICR)]'', used for written certificates, they are even rarer. You can use some of the programs alongside GRAMPS. For the backend tools, only command line tools are available (use ''-h'' for the options), but fortunately some GUI's have been made too:
* [http://code.google.com/p/tesseract-ocr/ Tesseract] may be a good solution for english reader but it currently only recognizes US-ASCII characters ...
* [http://jocr.sourceforge.net/ GOCR/JOCR] is used by [http://www.xsane.org/ xsane] and [http://kooka.kde.org/ kooka]. It can generate custom database characters from a picture with the command:
mkdir db
gocr -p db -m 130 -m 256 certificate.png
:This will ask you of each new letter it recognizes what the value is (a,b,...), and will generate a new index (db.list) + portable-bitmap (pbm) for your letters. Each key entry on db.list is one of the .pbm files and is connected to your custom value (a, b, c ...)
:This is however not very successfull on written text.
* With [http://www.gnu.org/software/ocrad/ocrad.html Ocrad], you need to use pgm file format
* People using KDE will probably know [http://kooka.kde.org/ Kooka] the standard KDE scanning tool with builtin OCR (using [http://jocr.sourceforge.net/ GOCR], [http://www.gnu.org/software/ocrad/ocrad.html Ocrad] which are OSS, or the commercial KADMOS).
* [http://www.geocities.com/claraocr/ claraocr] seems to be able to learn but I do not find any documentation. Also, need to use pgm or pbm file format.
*Also, [http://www.corollarium.com/conjecture/index.php Conjecture] is an OCR third party tool who incorporate both open sources programs code bases. ==Example==I think the easiest would be to use kooka or xsane, scan an image and do OCR....
