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Artikel

Automatische gedragsanalyse voor effectiever cameratoezicht in de openbare ruimte

Tijdschrift Tijdschrift voor Veiligheid, Aflevering 4 2014
Trefwoorden Behavior analysis, Threat detection, Action recognition, Tracking, Re-identification
Auteurs Dr. Henri Bouma, Drs. Jeroen van Rest, Dr. ir Gertjan Burghouts e.a.
SamenvattingAuteursinformatie

    To improve security in crowded environments, such as airports, shopping malls and railway stations, the number of surveillance cameras (CCTV) is rapidly increasing. However, the number of human operators remains limited and only a selection of the video streams can be observed. This makes it hard for an operator to be proactive. This paper gives an overview of novel developments that may lead to more efficient camera surveillance and a more proactive role for camera operators. It focuses on three main steps in this process of video content analysis: pedestrian tracking, action recognition and behavior analysis. Tracking and re-identification (i.e. recognizing a person in another camera) was initially only evaluated on off-line benchmark datasets, though recently it has gained in maturity with live demonstrations in realistic crowded environments and measured improved operator efficiency. For action recognition and automatic behavior recognition, we observe that the simple patterns, such as loitering detection, are emerging in many applications. Human action recognition obtains very high performance values in controlled environments and it is progressing towards more realistic environments. More advanced approaches, such as pickpocket recognition in a shopping mall and the detection of threats to trucks on a parking lot have been developed and the first systems have been presented in live demonstrations. Our main contribution is that we structure the recent advances and the emerging applications of video analysis for security applications, explain and interpret the results, and identify opportunities for the near future.


Dr. Henri Bouma
Dr. Henri Bouma is research scientist bij TNO.

Drs. Jeroen van Rest
Drs. Jeroen van Rest is consultant bij TNO.

Dr. ir Gertjan Burghouts
Dr. ir. Gertjan Burghouts is research scientist bij TNO.

Dr. Klamer Schutte
Dr. Klamer Schutte is research scientist bij TNO.

Ir. Jan Baan
Ir. Jan Baan is research scientist bij TNO.

Prof. Arnaud de Graaf
Erasmus School of Law, Erasmus University Rotterdam.

Prof. dr. Klaus Heine
Erasmus School of Law, Tax Law Department, Erasmus University Rotterdam.
Article

Access_open The Economics and Empirics of Tax Competition: A Survey and Lessons for the EU

Tijdschrift Erasmus Law Review, Aflevering 1 2014
Trefwoorden tax competition, tax coordination, European Union, fiscal federalism
Auteurs Thushyanthan Baskaran Ph.D. en Mariana Lopes da Fonseca
SamenvattingAuteursinformatie

    We survey the theoretical and empirical literature on local and international tax competition in Economics. On the basis of this survey, we discuss whether EU countries should harmonise tax policies to prevent a race to the bottom. Much of the evidence suggests that tax competition does not lead to significant reductions in tax revenues. Therefore, we conclude that tax coordination is in all likelihood unnecessary to prevent inefficiently low levels of taxation in the EU. But since the evidence against the adverse effects of tax competition is not unambiguous, we also discuss whether intergovernmental transfers might be a less invasive means than outright tax harmonisation to prevent a race to the bottom.


Thushyanthan Baskaran Ph.D.
University of Goettingen, Germany.

Mariana Lopes da Fonseca
University of Goettingen, Germany.
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