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US 7,466,869 B2Granted
Modulation transfer function of an image
OwnerKuo-Jeng Wanginventor
Life of this patent
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Abstract
The border of object in an image is blurred and so the modulation transfer function (MTF) of an image is reduced due to the blurred border. This present invention provides a deductive method for determining a border of an object in an image. Then the border of the object therein is amended and so the MTF of image is increased. In regard to an increasingly changeable color image, the present invention provides a deductive method in deciding upon a gray scale of the image to increase the color accuracy in amending an image.
Claims13
A method, comprising:
- identifying a border of an object in an image;
- identifying a pixel that is in the border;
- comparing a color or brightness value of the identified border pixel to a color or brightness values of two or more other selected pixels;
- and
- amending the color or brightness value of the identified border pixel according to the comparison to increase a modulation transfer function.
2 more elements
An apparatus, comprising:
- means for determining a border of an object in an image;
- means for identifying a color or brightness value of a pixel that is in the border;
- means for generating a new color or brightness value for the border pixel according to an analysis of color or brightness values of two or more adjacent pixels;
- means for determining a first difference between the color or brightness value of the border pixel and the color or brightness value of one of the two or more adjacent pixels;
- means for determining a second difference between the color or brightness value of the border pixel and the color or brightness value of a remaining one of the two or more adjacent pixels;
- and
- means for comparing the first and second differences to increase a modulation transfer function.
4 more elements
Dependencies are inferred from the claim text.