Image processing method for automated contrast modification...

Details Image processing method for automated contrast modification... Image processing method for automated contrast modification...

2007-05-08

2007-05-08

Couso, Yon J. (Department: 2624)

Image analysis

Image enhancement or restoration

C382S274000, C345S067000

Reexamination Certificate

active

10668716

ABSTRACT:
The invention relates to an image-processing method for automated contrast modification of digital image data. At least one low and one high-frequency signal are formed based on the digital image signal of the image data; the low-frequency signal component is modified using a characteristic-curve function; and then the modified, low-frequency signal is again added to the high-frequency signal component. In order to prevent the occurrence of distracting artifacts, so-called “halos”, the formation of the low-frequency signal component to be modified is formed in dependence upon the high-frequency image components.

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