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[Eugene S <question240746@xxxxxxxxxxxxxxxxxxxxx>]

Question #240746 on Sikuli changed:
https://answers.launchpad.net/sikuli/+question/240746

Eugene S proposed the following answer:
Hi,

Text recognition is not always accurate. It is a known issue.
However, if it's just short number strings, I have found that creating a kind of "translation table" can be very useful in some cases.

First of all, as RaiMan suggested here, try to enclose the text in a region (that will include that text only).
Then run a couple of tests and see if your results are consistent. Probably you will notice that some numbers are recognized incorrectly. Common mistakes might look like:

recognizing "U" instead of "0"
recognizing "?" instead of "7"

or more bizarre cases, like:
recognizing "CI" instead of "0"
recognizing "C|" instead of "0"
recognizing "EI" instead of "0"

or even:
recognizing "l3" instead of "0"

and:
recognizing "Ei" instead of "6"


So if you find such common pairs, you can create some post-processing rules. So, for example,  if you have your recognized text saved under "text" variable, you can do something like that:

text = text.replace('CI', '0')
text = text.replace('Ei', '6')


It can make all the difference you need as long as those recognition mistakes are consistent.


Eugene

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