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Automatic focus and iris control for video cameras

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2 Author(s)
Baina, J. ; TDF-C2R, France ; Dublet, J.

We present in this paper a method of focusing optics, based on image content analysis. This technique operates on digital video images and applies a DCT on pixels. The optimal adjustment of camera lens and the aperture of the diaphragm is given by evaluation parameters processed in the DCT domain. First of all, a short view of auto-focusing method based on scene propriety estimation is presented. Our automatic method is than described and a specific hardware implementation is presented. The prototype was built with an architecture using two processors, a dedicated digital signal processor and a programmable one

Published in:

Image Processing and its Applications, 1995., Fifth International Conference on

Date of Conference:

4-6 Jul 1995