Question re Turing test and image recognition

[Allen]

Hi gang,

In looking at captchas that have been broken via software it 
dawned on me that the amount of "mental processing" involved is 
actually very little. I'm interested in what the current state of 
image recognition via software of things like knowing the 
difference between a monkey and a cat or a child laughing or just 
happy and the degree of reliability of the differentiation. I've 
done a bit of looking around and don't find much. Does anyone 
have knowledge of or a  pointer to someone who might know where 
to look about this?

Thanks,

Allen

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