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Dive into the research topics where Jan Karl Warzelhan is active.

Publication


Featured researches published by Jan Karl Warzelhan.


Eurasip Journal on Image and Video Processing | 2008

A Review and Comparison of Measures for Automatic Video Surveillance Systems

Axel Baumann; Marco Boltz; Julia Ebling; Matthias Koenig; Hartmut Loos; Marcel Merkel; Wolfgang Niem; Jan Karl Warzelhan; Jie Yu

Todays 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.


Archive | 2009

Sensor network system, transmission protocol, method for recognizing an object, and a computer program

Jan Karl Warzelhan


Archive | 2008

Information device, method for informing and/or navigating a person, and computer program

Marcel Merkel; Julia Ebling; Jan Karl Warzelhan


Archive | 2008

Image processing device for detecting and suppressing shadows, method, and computer program

Marcel Merkel; Jan Karl Warzelhan; Matthias Koenig


Archive | 2011

Video surveillance system and method for configuring a video surveillance system

Jan Karl Warzelhan; Matthias Koenig


Archive | 2008

MASKING MODULE FOR A VIDEO SURVEILLANCE SYSTEM, METHOD FOR MASKING SELECTED OBJECTS, AND COMPUTER PROGRAM

Marcel Merkel; Hartmut Loos; Jan Karl Warzelhan


Archive | 2009

Device, method, and computer for image-based counting of objects passing through a counting section in a specified direction

Julia Ebling; Christof Krueger; Jan Karl Warzelhan


Archive | 2009

INVENTORY MODULE FOR A VIDEO MONITORING SYSTEM, METHOD FOR TAKING INVENTORY OF A MONITORING REGION, AND A COMPUTER PROGRAM

Julia Ebling; Jan Karl Warzelhan; Matthias Koenig


Archive | 2008

Maskierungsmodul für ein videoüberwachungssystem, verfahren zur maskierung von selektierten objekten sowie computerprogramm

Marcel Merkel; Hartmut Loos; Jan Karl Warzelhan


Archive | 2011

CONTROL DEVICE, METHOD FOR CONTROLLING AN OBJECT IN A MONITORING REGION AND COMPUTER PROGRAM

Thomas Hoernlein; Jan Karl Warzelhan

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