Circuit arrangement for automatic backlighting glare correction for image recording devices
In image recording devices, preferably video cameras, glare correction is formed by a built-in highlight blanking which, in the event of a high degree of backlighting, assigns a defined grey-scale value to the bright image component and, in the event of the brightness being increased, likewise incre...
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Format: | Patent |
Sprache: | eng ; ger |
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Zusammenfassung: | In image recording devices, preferably video cameras, glare correction is formed by a built-in highlight blanking which, in the event of a high degree of backlighting, assigns a defined grey-scale value to the bright image component and, in the event of the brightness being increased, likewise increases the said assigned grey-scale value. In the event of an extreme brightness being reached, this leads to unidentifiable and hence unusable monitor images. It is an aim of the invention, above a defined grey-scale value, to use an automatic backlighting glare correction to influence the glare control in such a way that an unambiguously identifiable monitor image is supplied even in the event of extreme glare. |
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