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US 2006/0077490 A1Published application
Automatic adaptive gamma correction
OwnerSemion Sheraizin, Vitaly Sheraizininventors
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Abstract
A system includes an image analyzer to analyze an input image to generate correction parameters and a grey scale stretcher to utilize said correction parameters to perform a grey scale stretch on the image with little or no visible change in the noise level of the image.
Claims34
A method comprising:
- analyzing an input image to generate correction parameters;
- and
- performing a grey scale stretch on said image using said correction parameters with little or no visible change in the noise level of said image.
The method of claim I and wherein said analyzing comprises:
- generating a histogram of the intensities of said image;
- histogram analyzing to determine the type of said image;
- and
- generating said parameters as a function of said type and said histogram.
1 more element
A system comprising:
- an image analyzer to analyze an input image to generate correction parameters;
- and
- a grey scale stretcher to utilize said correction parameters to perform a grey scale stretch on said image with little or no visible change in the noise level of said image.
Dependencies are inferred from the claim text.