See Around Corners with a Mobile Phone


Seeing around corners, in the dark, and through smoke is difficult without specialized sensors[Velten et al. 2012], and so far impossible with a mobile phone. We use an active audio system to sense objects around occluders. Current techniques perform passive localization of sound sources with a microphone array, however, we demonstrate that with one microphone and one speaker pair, such as the ones found in mobile phones, it is possible to sense the specular reflection of silent objects such as mannequins around occluding objects. We demonstrate this technique by sensing a mannequin occluded by a wall. Siggraph 2014 Poster, Student Research Competition, PDF: Hisham Bedri, Micha Feigin, Michael Everett, Ivan Filho, Gregory L. Charvat, and Ramesh Raskar. 2014. Seeing around corners with a mobile phone?: synthetic aperture audio imaging. In ACM SIGGRAPH 2014 Posters (SIGGRAPH ’14). ACM, New York, NY, USA, , Article 84 , 1 pages. DOI=10.1145/2614217.2614282



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