Systems and methods for enhancing tone reproduction
AssigneeHewlett-Packard Development Company, L.P.
InventorHuitao Luo
Life of this patent
Estimating the term…
Abstract
The present invention is related to a method for processing a digital image, wherein the digital image comprises at least a gray-scale component. The method may comprise: morphologically filtering the grayscale component to produce a segmentation result; low-pass filtering the gray-scale component under control of at least the segmentation result to produce an image mask; and enhancing tone reproduction of the digital image utilizing at least the image mask.
Claims22
A method for processing a digital image, wherein said digital image comprises at least a gray-scale component and a chromatic component, comprising:
- morphologically filtering said grayscale component to produce a segmentation result;
- low-pass filtering said gray-scale component under control of at least said segmentation result to produce an image mask;
- and
- enhancing tone reproduction of said digital image utilizing at least said image mask and said chromatic component.
A computer-readable medium comprising executable instructions for processing a digital image, wherein said digital image comprises at least a gray-scale component and a chromatic component, comprising:
- code for applying open and close morphological filters to said gray-scale component to produce a segmentation result;
- code for low-pass filtering said gray-scale component to produce an image mask, wherein said code for low-pass filtering is operable to apply said low-pass filter under control of at least said segmentation result;
- and
- code for enhancing said gray-scale component by utilizing at least said image mask and the chromatic component.
A system for processing a digital image, wherein said digital image comprises at least a gray-scale component and a chromatic component, comprising:
- means for morphologically filtering said gray-scale component to produce a segmentation data structure;
- means for low-pass filtering said gray-scale component to produce an image mask, wherein said means for low-pass filtering operates under control of at least said segmentation data structure;
- and
- means for enhancing tone reproduction of gray-scale component utilizing at least said image mask and the chromatic component.
Dependencies are inferred from the claim text.