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face recognitin

Posted on 2005-04-01
Medium Priority
Last Modified: 2010-04-15

is there any web resourses where i can get coding info & sample code
for signature & face recognition .

any e-books related  to this


Question by:manoj_bramhe
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Jaime Olivares earned 256 total points
ID: 13681953
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avizit earned 248 total points
ID: 13686544
There are some papers here

also check the papers link here

and check the documentation for some assignment here
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grg99 earned 248 total points
ID: 13688098
Face recognition is trivial for humans and animals to do-- it's has to be, as you don't survive if you don't recognize your parents.

But it's a very difficult computational task.  First you have to be able to extract 3-D information from 2-D input.  That's as far as I know, an unsolved problem.   That has to work even if there are variations in lighting and angles.  Your brain does that with no strain, but it's algorithmically and computationally difficult.    Then you have to extract salient features, while ignoring unimportant ones.  Your brain does that automatically--- for example, you ignore slight variations in hair position, eyelid opening, jaw position, smiling versus not, pouting, frowning, smiling, looking to the left, surprised, sad, , because you just "know" those things change from second to second, within certain limits.  But the computer does not.    Your brain makes many judgement calls.  One example-- Your brain automatically corrects for the avrious ways hair can appear-- clean and dry, or after several days without shampooing-- oily and more compact.  But your brain also "knows" that someone with really short hair doesnt look like someone with oily-matted down hair, even though the ratios of light and dark may be very similar.   Also you "know" when someone is smiling the eyes crinkle up, so if they're "smiling", which is another tough judgement, and not "snarling", their eyes are going to look differently, so yo have to change the kind of eye appearance you expect in that situation, and not identify them as someone with normally "crinkly" eyes.  

This is a VERY HARD problem.   Like unsolved and perhaps unsolveable.  I suspect for the next 30 years or so it's going to be much cheaper and much more accurate to pay a human being to compare faces.

LVL 16

Assisted Solution

PaulCaswell earned 248 total points
ID: 13696847
Here's a some useful sites to start at:



This one's an Intel package that implements many of the algorithms in C on Intel PCs.


Good luck!


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