How to fill gaps in letters

asked 2017-04-09 14:08:50 -0600

Habib
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updated 2017-04-10 08:02:42 -0600

20029 ●16 ●82 ●207 http://stevenputtemans...

Hi i'm new in openCv. i am using OpenCV to process image before sending it to tesseract. but there is gaps in some letters and numbers. How can I fix this?

Thank you.

UPDATE: my process result is this : www.imgh.us/1491762567343_1491762645019.jpg

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answered 2017-04-10 03:23:58 -0600

StevenPuttemans

20029 ●16 ●82 ●207 http://stevenputtemans...

It kind of depends on the gaps, can you produce some examples for us? But in general I would look at something like

Start by detecting all blobs with findContours.
Connect blobs that are close together (dilate and erode are useful here), keeping in mind that blobs split vertically should be merged, but horizontally should be left alone, because then you will connect neighboring letters.

Good luck!