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Báo cáo hóa học: Research Article Robust and Scalable Transmission of Arbitrary 3D Models over Wireless Networks

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Robust and Scalable Transmission of Arbitrary 3D Models over Wireless Networks | Hindawi Publishing Corporation EURASIP Journal on Image and Video Processing Volume 2008 Article ID 824726 30 pages doi 10.1155 2008 824726 Research Article A Review and Comparison of Measures for Automatic Video Surveillance Systems Axel Baumann Marco Boltz Julia Ebling Matthias Koenig Hartmut S. Loos Marcel Merkel Wolfgang Niem Jan Karl Warzelhan and Jie Yu Corporate Research Robert Bosch GmbH D-70049 Stuttgart Germany Correspondence should be addressed to Julia Ebling julia.ebling@de.bosch.com Received 30 October 2007 Revised 28 February 2008 Accepted 12 June 2008 Recommended by Andrea Cavallaro Today s video surveillance systems are increasingly equipped with video content analysis for a great variety of applications. However reliability and robustness of video content analysis algorithms remain an issue. They have to be measured against ground truth data in order to quantify the performance and advancements of new algorithms. Therefore a variety of measures have been proposed in the literature but there has neither been a systematic overview nor an evaluation of measures for specific video analysis tasks yet. This paper provides a systematic review of measures and compares their effectiveness for specific aspects such as segmentation tracking and event detection. Focus is drawn on details like normalization issues robustness and representativeness. A software framework is introduced for continuously evaluating and documenting the performance of video surveillance systems. Based on many years of experience a new set of representative measures is proposed as a fundamental part of an evaluation framework. Copyright 2008 Axel Baumann et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. INTRODUCTION The installation of videosurveillance systems is driven by the need to protect privateproperties and .