** Tags added: fkt-text
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https://bugs.launchpad.net/bugs/1224811
Title:
[1.0.1] improvements for text recognition
Status in Sikuli:
In Progress
Bug description:
------------ small fonts
... more background info in the related question
Improvement in OCR recognition with small images (thanks to Jose Damian)
Anyway, I think it is an error to use interpolation to enlarge these small
images. Given that it is needed an image height greater than 30 pixels, the
best solution for me has been to enlarge the image adding pixels to the border:
---------------
if (in_img.rows < MIN_HEIGHT){
scale = ceil(MIN_HEIGHT / float(in_img.rows));
copyMakeBorder (in_img, out_img, 0, (scale-1)*in_img.rows, 0,
(scale-1)*in_img.cols, BORDER_REPLICATE);
---------------
This solution achieves near perfect recognition with my image samples.
I don't know if this is the right treatment for all kinds of small images and
could be included in a future release; but at least it is a change that people
can try if they have problems recognizing small fonts.
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