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4 March 2015 A novel synchronous multi-intensity IR illuminator hardware implementation for nighttime surveillance
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Proceedings Volume 9407, Video Surveillance and Transportation Imaging Applications 2015; 940711 (2015) https://doi.org/10.1117/12.2083477
Event: SPIE/IS&T Electronic Imaging, 2015, San Francisco, California, United States
Abstract
For nighttime surveillance, it’s difficult for an ordinary IR illuminator (which has a fixed light intensity) to generate a one-size-fits-all light condition for objects at different distances. Often, we will get overexposed (underexposed) image for an object which is too close to (too far from) the illuminator/camera in the nighttime. To partly resolve such problems, a multi-intensity IR illuminator was proposed which can emit periodically varying intensities of IR light toward an object. However, two major problems remain to be resolved when using such an illuminator, i.e., the “synchronization issue” for background modeling and the “viewing issue” for manual monitoring. In this paper, we propose a novel synchronous multi-intensity infrared (SMIIR) illuminator hardware design to help address these two issues. Hopefully this innovation will open the door to a new era of nighttime surveillance.
© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Wen Chih Teng and Jen-Hui Chuang "A novel synchronous multi-intensity IR illuminator hardware implementation for nighttime surveillance", Proc. SPIE 9407, Video Surveillance and Transportation Imaging Applications 2015, 940711 (4 March 2015); https://doi.org/10.1117/12.2083477
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