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Can a computer copy your handwriting?

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I heaved a sigh of relief only after reading the last sentence!

Can a computer copy your handwriting?



Rory Cellan-Jones Technology correspondent



Could a computer copy your handwriting? Researchers at University College London have taught a computer to imitate anyone's handwriting.
They have created an algorithm that can take a sample of handwritten text, examine its qualities, and then write any text in the same style.
There are already typefaces in word processing programs that produce text in a fairly uniform handwritten style. But what Tom Haines and his fellow UCL researchers have done is create software that they claim reproduces the messy details of any individual writer's hand.
They call their system My Text In Your Handwriting and have tried it out on samples of handwritten text from historical figures such as Abraham Lincoln and the creator of Sherlock Holmes Sir Arthur Conan Doyle.
While Conan Doyle never actually wrote "Elementary, my dear Watson..." the UCL team have now produced that sentence in his handwriting.
Handy writing

I gave Tom Haines a uniquely difficult challenge.
My handwriting has always been bad. A messy scrawl that even my family struggles to decipher. I supplied Tom with a sample written on paper with a ballpoint pen - other programs have relied on text written on a tablet, which gives a less accurate input.
He began the process by using a program that marked up each letter and punctuation mark, analysing in some detail how I wrote. The fact that I sometimes dotted the letter i and in other cases did not was just one wrinkle.
Then when the analysis was complete he fed it into the algorithm and typed the word "hello" into a box.
Alongside, a barely legible "hello" appeared - but I had to admit it was a fair approximation of my scrawl. We then tried it out with a whole sentence - and again I have to admit the result was just as bad as I might have produced.
Clever - but what practical uses does this handwriting algorithm have?
One example is where banks send out sensitive documents or new credit cards and want to disguise the letters so that they look like handwritten personal letters. The researchers showed me three hand-addressed letters - one of them produced by the computer, two genuinely hand-written. I struggled to work out which was which - see if you can do any better.


_90750065_img_3590.jpg


Is this by human hand or a computer? (Answer at the foot of the page)
_90756603_img_3590.jpg

Or this one?

_90756607_img_3590.jpg


Does this look real or has it been penned by silicon? Another possible commercial use is in the personal messages that are inserted with flowers or presents sent by delivery firms - how much better to have a "genuine" handwritten "Happy Birthday" than something typed on a card.
You might think that another potential use was by criminals attempting to forge your signature. But the researchers say that close examination with a microscope will still reveal what was written by a real human being and what was machine-generated.
Image 2 was done by computer but the other two were written by a human.

http://www.bbc.com/news/technology-37046477
 
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What it needs is only to take samples and then determine the angles, lengths and depths. Then write out the algorithm and adopt iteration as the handy tool. Then comes testing and fine-tuning. No doubt the algorithm will be lengthy and may be a long one in writing. But it can be done. It does not require great minds to do that. It requires just painstaking work for many hours by an informed techie who may even be just above average.
 
I think what the researchers have done is fantastic. Their paper http://dl.acm.org/citation.cfm?id=2886099 has appeared in ACM Transactions on Computer Graphics ( an excellent journal as specified by Google Scholar https://scholar.google.com/citations?view_op=top_venues&hl=en&vq=eng_computergraphics ) Please read how the authors have accomplished their goal in their paper (at least get an over all idea ) - Their features inclue glyphs, spacjing ligatures and texturing and output variability ( mode of writing - pen, pencil etc)

Browse their paper here http://visual.cs.ucl.ac.uk/pubs/handwriting/handwriting_visual_main.pdf to get to know what is involved.
 
Why rake the brain to find out a method, when humans are so efficient in forgery! ;)

If developing countries do not innovate, it may end up being ridiculed.

http://poptech.org/blog/luis_von_ahn_captchas_my_fault

Relevant paragraph
Spammers need lots of email accounts, since each account tends to be limited to sending a few hundred emails a day. So spammers write programs to harness lots of accounts. CAPTCHAs slow this down. So spammers are now building CAPTCHA sweatshops, hiring humans to type CAPTCHAs in countries where the minimum wage is very low. Luis observes that, well, at least it’s costing spammers something. And it’s creating jobs in the developing world. Pornographers who want email accounts have found out how to do this for free – they ask people to solve the CAPTCHAs they’re confronted with in exchange for free po
 
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