Can you send me on [EMAIL PROTECTED] a sample image file. THX
On Tue, 2005-05-17 at 15:44 +0000, Tarik FDIL wrote: > Hi, > > I would like to talk you about a little technical problem which blocked me > for > several days... > > You know that OCR processing proceed like this : > > 1- read image file > 2- detect lines > 3- detect characters in a line > 4- compare characters detected with a database of stored characters and > decide > which characters are related. > 5- write text resulting from OCR and make some extra processing (spell > checking, etc.) > > My technical concern is between 3 and 4 stage. After detecting character's > pixels and before sending them to the comparison system, you should make some > adjustment to charcter's image : > - we should clean it (remove isolated pixels, etc.) > - we should squlettisize the character, ie. transforming it to become thin : > a > shape made with only one-pixel drawings. This enhance the effectiveness of > comparison. > - we should resize (resample) the charcter to make it fitting in a one > standard fixed matrix of pixels. > > I have problem to write a good program for squlettisation of characters > (thinning). I tried many methods but I miss documents describing in details > thinning algorithms. You can find joind to this mail some programs that I > have written. But I'm not satisfied by the output of these programs. Either > they didn't respect the overall shape of character, or they eliminate too > many pixels, etc. > > So, if some one have documents, librairies or programs which can help us in > "shape thinning or squelettisation", it will be very welcome. > > Best regards > Tarik > > _______________________________________________ > Developer mailing list > [email protected] > http://lists.arabeyes.org/mailman/listinfo/developer
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