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We envision a future time when wearable cameras are worn by the masses and recording first-person point-of-view videos of everyday life. While these cameras can enable new assistive technologies and novel research challenges, they also raise serious privacy concerns. For example, first-person videos passively recorded by wearable cameras will necessarily include anyone who comes into the view of a camera -- with or without consent. Motivated by these benefits and risks, we developed a self-search technique tailored to first-person videos. The key observation of our work is that the egocentric head motion of a target person (i.e., the self) is observed both in the point-of-view video of the target and observer. The motion correlation between the target person's video and the observer's video can then be used to identify instances of the self uniquely. We incorporate this feature into the proposed approach that computes the motion correlation over densely-sampled trajectories to search for a target individual in observer videos. Our approach significantly improves self-search performance over several well-known face detectors and recognizers. Furthermore, we show how our approach can enable several practical applications such as privacy filtering, target video retrieval, and social group clustering.
This article was published in the following journal.
Name: IEEE transactions on pattern analysis and machine intelligence
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Interference with the FREEDOM or PERSONAL AUTONOMY of another person, with justifications referring to the promotion of the person's good or the prevention of harm to the person. (from Cambridge Dictionary of Philosophy, 1995); more generally, not allowing a person to make decisions on his or her own behalf.
A person authorized to decide or act for another person, for example, a person having durable power of attorney.
Works consisting of nonfiction films and video designed to teach, instruct, or train. (From Moving Image Materials: Genre Terms, 1988)
An infection of the SMALL INTESTINE caused by the flagellated protozoan GIARDIA LAMBLIA. It is spread via contaminated food and water and by direct person-to-person contact.
Programs of surveillance designed to prevent the transmission of disease by any means from person to person or from animal to man.