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*** For immediate use December 5, 2012
Tokyo, December 5, 2012 - NEC Corporation (NEC; TSE: 6701) has developed first-of-its-kind technologies that improve the visibility of surveillance footage taken at night, in poor weather (fog or mist) and from long distances to achieve 24-hour real-time surveillance of large areas.
Recent years have seen a dramatic rise throughout the world in the demand for surveillance images that help to prevent crime and terrorism. Current city surveillance systems, for example, require a large number of telescopic and swivel cameras in order to record footage over wide areas. Footage also has to be reviewed by surveillance staff, and suspicious activity can be overlooked or its discovery delayed when visibility is poor due to darkness, bad weather or long distances.
The 24-hour large-area surveillance technology developed by NEC combines three elements: (1) de-hazing based on visual characteristics(*1); (2) Real-time multiple frame super resolution technology(*2); and (3) large-scale image processing technology(*3). This enables surveillance systems to accurately locate subjects that are in dark, foggy or misty conditions, as well as far away, which is difficult for conventional visual surveillance systems. Furthermore, the large-area surveillance capability of these technologies enables cities to reduce the number of cameras needed to observe certain areas.
This technology incorporates the following features.
(*1) Haze is an atmospheric phenomenon in which visibility is lowered due to particles floating in an area. Mist. De-hazing is a form of image processing that improves the picture quality of images whose visibility has been degraded due to mist.
(*2) Multiple frame super resolution is a technology that boosts resolution based on multiple images taken from video in order to magnify small subjects taken with video, making them easier to identify. While the technology has other characteristics such as the effect of reducing overall noise not limited to the subject, due to the high processing load involved, real-time processing was difficult until now (see *5).
(*3) Announced September 4, 2012.
NEC developed large scale video processing technologies that can apply image analysis to a surveillance area three times greater than before.
http://jpn.nec.com/press/201209/20120904_01.html
(*5) Compared with technology announced November 10, 2010.
NEC Develops Multi-Frame Super Resolution Technology that Restores Fine Detail to Moving Subjects
http://www.nec.co.jp/press/ja/1011/1007.html
* Intel and Xeon are trademarks or registered trademarks of Intel Corporation or its subsidiaries in the United States and other countries.
Takehiko Kato
NEC Corporation
+81-3-3798-6511
E-Mail:t-kato@cj.jp.nec.com
Joseph Jasper
NEC Corporation
+81-3-3798-6511
E-Mail:j-jasper@ax.jp.nec.com