DocumentCode :
3371654
Title :
The Impact of Video Transcoding Parameters on Event Detection for Surveillance Systems
Author :
Kafetzakis, Emmanouil ; Xilouris, Christos ; Alexandros Kourtis, Michail ; Nieto, Marcos ; Jargalsaikhan, Iveel ; Little, Scott
Author_Institution :
Inst. of Inf. & Telecommun., Nat. Center of Sci. Res. “Demokritos”, Paraskevi, Greece
fYear :
2013
fDate :
9-11 Dec. 2013
Firstpage :
333
Lastpage :
338
Abstract :
The process of transcoding videos apart from being computationally intensive, can also be a rather complex procedure. The complexity refers to the choice of appropriate parameters for the transcoding engine, with the aim of decreasing video sizes, transcoding times and network bandwidth without degrading video quality beyond some threshold that event detectors lose their accuracy. This paper explains the need for transcoding, and then studies different video quality metrics. Commonly used algorithms for motion and person detection are briefly described, with emphasis in investigating the optimum transcoding configuration parameters. The analysis of the experimental results reveals that the existing video quality metrics are not suitable for automated systems and that the detection of persons is affected by the reduction of bit rate and resolution, while motion detection is more sensitive to frame rate.
Keywords :
closed circuit television; error statistics; image motion analysis; object detection; transcoding; video coding; video surveillance; automated systems; bit rate; event detection; event detectors; motion detection; network bandwidth; person detection; surveillance systems; transcoding configuration parameters; transcoding engine; transcoding times; transcoding videos; video quality metrics; video sizes; video transcoding parameters; Bit rate; PSNR; Quality assessment; Trajectory; Transcoding; Video recording; CCTV; event detection; transcoding; video quality;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Multimedia (ISM), 2013 IEEE International Symposium on
Conference_Location :
Anaheim, CA
Print_ISBN :
978-0-7695-5140-1
Type :
conf
DOI :
10.1109/ISM.2013.64
Filename :
6746816
Link To Document :
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