System and method for multi-resolution sharpness transport across color channels
First Claim
1. An image sharpening method comprising:
- capturing an image;
decomposing, by an image system, the image into a plurality of image-representation components;
transforming, by the image system, each image-representation component of the plurality of image-representation components to obtain an unsharpened multi-resolution representation for each image-representation component, wherein a multi-resolution representation comprises a plurality of transformation level representations;
transporting, by the image system, sharpness information from an unsharpened transformation level representation of a first one of the plurality of image-representation components to a same transformation level representation of an unsharpened multi-resolution representation of a second one of the plurality of image-representation components to create a sharpened multi-resolution representation of the second one of the image-representation components, wherein the transported sharpness information modifies sharpness information in the same transformation level representation of the unsharpened multi-resolution representation of the second one of the plurality of image-representation components;
transforming, by the image system, the sharpened multi-resolution representation of the second one of the plurality of image-representation components to obtain a sharpened image; and
displaying the sharpened image on a display device.
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Abstract
Provided are a system and method for image sharpening is provided that involves capturing an image, and then decomposing the image into a plurality of image-representation components, such as RGB components for example. Each image-representation component is transformed to obtain an unsharpened multi-resolution representation for each image-representation component. A multi-resolution representation includes a plurality of transformation level representations. Sharpness information is transported from an unsharpened transformation level representation of a first one of the image-representation components to a transformation level representation of an unsharpened multi-resolution representation of a second one of the image-representation components to create a sharpened multi-resolution representation of the second one of the image-representation components. The sharpened multi-resolution representation of the second one of the image-representation components is then transformed to obtain a sharpened image. The improved and sharpened image may then be displayed.
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Citations
29 Claims
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1. An image sharpening method comprising:
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capturing an image; decomposing, by an image system, the image into a plurality of image-representation components; transforming, by the image system, each image-representation component of the plurality of image-representation components to obtain an unsharpened multi-resolution representation for each image-representation component, wherein a multi-resolution representation comprises a plurality of transformation level representations; transporting, by the image system, sharpness information from an unsharpened transformation level representation of a first one of the plurality of image-representation components to a same transformation level representation of an unsharpened multi-resolution representation of a second one of the plurality of image-representation components to create a sharpened multi-resolution representation of the second one of the image-representation components, wherein the transported sharpness information modifies sharpness information in the same transformation level representation of the unsharpened multi-resolution representation of the second one of the plurality of image-representation components; transforming, by the image system, the sharpened multi-resolution representation of the second one of the plurality of image-representation components to obtain a sharpened image; and displaying the sharpened image on a display device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification