Exploring the Resolution Limit for In-Air Synthetic-Aperture Audio Imaging
Author(s)Boufounos, Petros T.; Bedri, Hisham; Feigin-Almon, Micha; Raskar, Ramesh
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SONAR imaging can detect reflecting objects in the dark and around corners, however many SONAR systems require large phased-arrays and immobile equipment. In order to enable sound imaging with a mobile device, one can move a microphone and speaker in the air to form a large synthetic aperture. We demonstrate resolution limited audio images using a moving microphone and speaker of a mannequin in free-space and a mannequin located around a corner. This paper also explores the 2D resolution limit due to aperture size as well as the time resolution limit due to bandwidth, and proposes Continuous Basis Pursuits (CBP) to super-resolve.
DepartmentMassachusetts Institute of Technology. Media Laboratory; Program in Media Arts and Sciences (Massachusetts Institute of Technology)
2015 IEEE International Conference on Computer Vision Workshop (ICCVW)
Institute of Electrical and Electronics Engineers (IEEE)
Bedri, Hisham, Micha Feigin, Petros T. Boufounos, and Ramesh Raskar. “Exploring the Resolution Limit for In-Air Synthetic-Aperture Audio Imaging.” 2015 IEEE International Conference on Computer Vision Workshop (ICCVW) (December 2015).
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INSPEC Accession Number: 15790289