Yes, PicTells does exactly that and much more.
PicTells is a fun app for android devices which uses face detection algorithms to detect your mood and other facial attributes from your picture. PicTells does image analysis and predicts the presence of a face in the pic, the gender of the person, the mood of the person along with other facial attributes like whether the person is smiling or wearing glasses. etc. Images can be uploaded realtime (from camera), from your phone gallery or you can upload a image url. Find out more on http://appsolutegeeks.somee.com/pictells
Out now in SlideME and Google Android Market
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