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US 2009/0154828 A1Published application
Method for adaptive image enhancement
AssigneeIntel Corporation
InventorsAVI LEVY, Ziv Aviv
Life of this patent
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Abstract
A filtering system and method are disclosed, to perform simultaneous, de-noising, and details enhancement tasks of a video image. The efficient filtering system includes multiple filters, which operate on a portion of the video image that has been partitioned into multiple rings. Using the filtering system, complex mathematical operations are avoided.
Claims20
A filtering system, comprising:
- a classification module, to analyze a current pixel neighborhood of an input image, wherein the classification module generates a visual significant measure based on the analysis;
- a transfer function to generate blending coefficients, α1, . . . , αn, for integer n;
- and
- n ring filters, to filter the pixel neighborhood, the pixel neighborhood being partitioned into n ring environments, wherein each ring environment is filtered by a different ring filter.
1 more element
A method for performing efficient filtering of an image, the method comprising:
- receiving the image, wherein the image is a 5×5 pixel neighborhood, defined by
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- filtering an outer portion of the image using a first ring filter, R2, resulting in a first output;
- filtering a middle portion of the image using a second ring filter, R1, resulting in a second output;
- filtering an inner portion of the image-using a third filter, R0, resulting in a third output;
- and
- alpha-blending the first output, the second output, and the third output.
22 more elements
A method for performing efficient filtering of an image, the method comprising:
- receiving the image, wherein the image is an n×n pixel neighborhood, n being an integer;
- filtering a first portion of the image using a first ring filter, R1, resulting in a first output;
- filtering a second portion of the image using a second ring filter, R2, resulting in a second output;
- and
- filtering an third portion of the image using a third filter, R3, resulting in a third output.
2 more elements
Dependencies are inferred from the claim text.