Title :
Remote Voice Acquisition in Multimodal Surveillance
Author :
Li, Weihong ; Zhu, Zhigang ; Wolberg, George
Author_Institution :
Dept. of Comput. Sci., City Univ. of New York, NY
Abstract :
Multimodal surveillance systems using visible/IR cameras and other sensors are widely deployed today for security purpose, particularly when subjects are at a large distance. However, audio information as an important data source has not been well explored. One of the reasons is because audio detection using microphones needs installation close to the subjects in monitoring. In this paper, we investigate a novel "optical" sensor, called laser Doppler vibrometer (LDV), for capturing voice signals in a very large range to realize a truly remote and multimodal surveillance system. Speech enhancement approaches are studied based on the characteristics of LDV audio. Experimental results show that remote voice detection via an LDV is promising when choosing appropriate targets close to human subjects in the environment
Keywords :
Doppler effect; acoustic signal detection; cameras; infrared detectors; laser beam applications; optical sensors; speech enhancement; surveillance; vibration measurement; LDV; laser Doppler vibrometer; multimodal surveillance system; optical sensor; remote voice acquisition; speech enhancement; visible-IR camera; Cameras; Data security; Information security; Infrared sensors; Microphones; Multimodal sensors; Optical sensors; Remote monitoring; Sensor systems; Surveillance;
Conference_Titel :
Multimedia and Expo, 2006 IEEE International Conference on
Conference_Location :
Toronto, Ont.
Print_ISBN :
1-4244-0366-7
Electronic_ISBN :
1-4244-0367-7
DOI :
10.1109/ICME.2006.262864
