Method for enhancing the quality of an image

Details Method for enhancing the quality of an image Method for enhancing the quality of an image

2007-07-03

2007-07-03

Chen, Wenpeng (Department: 2624)

Image analysis

Image enhancement or restoration

Intensity, brightness, contrast, or shading correction

Reexamination Certificate

active

10283728

ABSTRACT:
A method for enhancing the quality of an image, in particular with respect to its contrast properties, comprises the step of calculating a histogram for an input image (S5), equalizing the input image on the basis of the calculated histogram to obtain a corresponding histogram equalized image (S5), wherein the histogram equalized image and the input image are merged/mixed/blended (S6) to obtain an output image, wherein merging/mixing/blending is weighted (S12) in dependency of the content of the input image and/or of other input image data relating to the input image. This makes it possible to further improve the quality of histogram equalized images.

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Rafael Gonzalez, Paul Wintz, Section 4.2.2 Histogram Equalization, Digital Image Processing, Addison-Wesley Publishing Company, 1977.

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