Is there a library that can take an image and do processing to determine things about it? [closed]

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Is there a library that can take an image and do processing to determine things about it (such as: is the image a person of female or male)?

Is there such a free tool out there?

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There are some. But most of them are extremely expensive (several 100k € - don't know if that is acceptable for you). One open source is here, but you can be happy if it can actually detect a face. It won't detect the sex of a person on the picture.