Method of displaying on a viewing screen the output signals...

Details Method of displaying on a viewing screen the output signals... Method of displaying on a viewing screen the output signals...

H - Electricity

04

N

350/3, 350/32

H04N 7/00 (2006.01) H04N 5/20 (2006.01) H04N 5/243 (2006.01)

Patent

CA 1183597

ABSTRACT OF THE DISCLOSURE In displaying on a viewing screen an image generated by output signals from a radiation-sensitive detector, e.g., an infrared detector, it may occur that weakly contrasting details in the image are lost when the light intensity of the image covers too great an intensity range. In one method of avoiding this loss of details, the amplification of the low-frequency por- tions of the video signals is regulated adaptively by calculat- ing two statistical parameters, characteristic for the statisti- cal properties of the signal values, and adjusting the amplifica- tion such that a selected image intensity corresponds to the calculated parameters.

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