Auto focus algorithm for PTZ network cameras

Note: Starting no earlier than January 2010.

Category: Control Theory / Imaging
Scope: 2 students completing 30 HE credits (20 weeks) each

Background
In PTZ (Pan Tilt Zoom) capable network cameras, an algorithm for automatic focus control is required in order to regain focus after pan-tilt movements, or sometimes retain focus during the entire movement. Such an algorithm is required to handle low light conditions, i.e. stay stable when input noise has relatively great influence. The algorithm must also be able to handle moving objects in the scene that are not moving as a result of a pan-tilt movement. In surveillance applications, it is of interest, to use the output of the algorithm in order to retrieve the distance to an object in focus.

Goals
The goal of this thesis is to find and implement an auto focus algorithm for use in PTZ network cameras, as well as to measure and evaluate the performance of the algorithm.

More information
For more information, contact Johan Nyström.

Application
See the application instructions before applying.

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