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Realization of Scenarios for Video Surveillance

Chmiel W., Kwiecień J., Mikrut Z.

Image Processing & Communications

2012

Vol. 17, no. 4

231--240

The design of a methodology for the effective scene understanding systems is one of the main goals of the researchers in the analysis of video surveillance. The objects in the scene have to be identified. Hence, it is necessary to detect the parts belonging to the background. In the article we introduce the base algorithms, which enable us to realization of scenarios. We briefly describe base algorithms (object detection, object localization, recognition of humans, movement detection and configuration of scene) used in three selected scenarios: violation of protected zones, abandoned objects and vandalism (graffiti). These scenarios were tested on several films, obtained from Internet and made by participants of project SIMPOZ. The results of our experiments are presented. The basic algorithms for detecting and locating objects are very quickly, but movement detection ("optical flow") and recognition of humans algorithms work longer.

Neuronal movement detector in the model of simulated mammalian visual system

Wójcik G. M., Kamiński W. A.

Bio-Algorithms and Med-Systems

2005

Vol. 1, no. 1/2

321--324

A simple model of mammalian visual system was created. This structure was simulated by means of several hundred Hodgkin-Huxley neurons. We investigated signal processing properties of the model. Energetic function - a concept taken from information theory was applied to the analysis of Primary Visual Cortex dynamics. Discussion of such method's efficiency in movement detection is presented in some detail.

Stworzono prosty model układu wzrokowego ssaka. Struktura taka była symulowana przy pomocy kilkuset neuronów Hodgkina-Huxleya. Badano zdolności przewodzenia sygnałów przez taką strukturę. Funkcja energetyczna - metoda zaczerpnięta z teorii informacji - została wykorzystana do analizy dynamiki pierwotnej kory wzrokowej (PVC) mózgu. Zostanie przeprowadzona dyskusja na temat wykorzystania funkcji energetycznej do detekcji ruchu.