Applying speech enhancement to audio surveillance

O’Shaughnessy, D.; Kabal, P.; Bernardi, David; Barbeau, Louis; Chu, Chi-Wei; Moncet, J.-L.

doi:10.1109/ccst.1988.75991

Cited by 4 publications

(2 citation statements)

References 2 publications

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“…It is clear from this example that the available time sources cannot be used to synchronize the recordings. The synchronization of multiple video recordings has been used extensively for applications such as object tracking [2][3], 3D-scene rendering [2], multi-sensor fusion [4], and noise reduction [5]. The synchronization methods are mainly based on multiple view geometry using object features [6], image intensity [3] and camera movement [4].…”

Section: Introductionmentioning

confidence: 99%

Synchronization of multiple video recordings based on still camera flashes

Shrestha

Weda

Barbieri

et al. 2006

Proceedings of the 14th ACM International Conference on Multimedia

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Combining audiovisual sequences from different cameras requires precise alignment in time. Current synchronization techniques involve using geometrical properties such as camera positions and object features. In this paper, we present a synchronization method based on detecting flashes present in the video content. Such flashes, generated by still cameras, cause a sharp bright frame in the videos. They are detected using an adaptive threshold on luminance variation across the frames. The resulting flash sequences are searched for matches. The matching flashes indicate overlapping content, and allow determining the offset time between cameras. The experimental results from flash detection and flash sequence matching show perfect synchronization in all examined cases.

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Section: Introductionmentioning

confidence: 99%

Synchronization of multiple video recordings based on still camera flashes

Shrestha

Weda

Barbieri

et al. 2006

Proceedings of the 14th ACM International Conference on Multimedia

View full text Add to dashboard Cite

show abstract

“…This includes disturbances introduced by the storage media and environmental noise recorded. O'Shaughnessy et al utilized speech enhancement techniques to improve the intelligibility of a wire-tap recording in [11].…”

Section: Applications Of Speech Enhancement Algorithmsmentioning

confidence: 99%