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an algorithm or system to recognise hand-written text


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#1 135790   Members   -  Reputation: 83

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Posted 14 September 2013 - 06:07 PM

I need a good algorithm that recognizes hand writing and converts it into computer text like OCR for printed text.  Any directions?



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#2 TheChubu   Crossbones+   -  Reputation: 4761

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Posted 14 September 2013 - 06:53 PM

No idea. And sounds awfully hard honestly.


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#3 studentTeacher   Members   -  Reputation: 897

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Posted 15 September 2013 - 10:39 AM

The closest I've seen in my studies towards a goal like this is using neural networks with many, many, MANY test cases. In fact, the first example I had in my neural networks class was a program that could recognize the numbers a person wrote. Perhaps you just try looking for algorithms in that direction...? Honestly I don't know of any other algorithms that might do this...

 

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EDIT:  Here's the link to the class: https://www.coursera.org/course/neuralnets

 

Look at the first example (video 5 or 6) and they are showing how a neural network can figure out what number a person is writing. Note that this is just numbers....let alone letters, words, etc.


Edited by studentTeacher, 15 September 2013 - 10:56 AM.


#4 Adam_42   Crossbones+   -  Reputation: 2618

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Posted 15 September 2013 - 01:03 PM

According to http://en.wikipedia.org/wiki/Optical_character_recognition what you want is ICR or IWR and only one bit of software on the list at http://en.wikipedia.org/wiki/Comparison_of_optical_character_recognition_software says it supports that. I suspect with a bit of searching you could find more options.

 

Systems that can read handwriting do exist in commercial products. For example in automated mail sorting systems.


Edited by Adam_42, 15 September 2013 - 01:06 PM.


#5 jbadams   Senior Staff   -  Reputation: 19366

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Posted 16 September 2013 - 07:57 AM

Just a quick moderation note to say that I edited your title to better reflect the question.  Good luck with your problem! smile.png



#6 frob   Moderators   -  Reputation: 22731

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Posted 16 September 2013 - 08:22 AM

As was pointed out, this is a hard problem. Hard as in "lots of major companies have invested billions over multiple decades and we still don't have anything that works well."

Just one of the 'easy' cases, a hand-drawn symbol: /-\ Is it an H? Or an A? If it showed up as "H/-\T" or "T/-\E" you could build "HAT" or "THE". If it was standalone it might be "It".
Repeat the process for all variations of handwriting. Then include sloppy handwriting that even the writer struggles to read.

Even high quality commercial OCR and word recognizers fail frequently and require humans to figure it out.

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#7 ProgrammerDX   Members   -  Reputation: 175

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Posted 18 September 2013 - 06:18 AM

Mail machine processors can detect it... dno if they actually read it tho




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