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US 2014/0233862 A1Published application
Local area processing using packed distribution functions
AssigneeRaytheon Company
InventorWilliam C. Pack
Life of this patent
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Abstract
Described herein are devices and techniques for providing adaptable Local Area Processing (LAP) contrast enhancement of imagery by redistributing pixel intensity values in a dynamic range of an imaging device according to a packed statistical distribution function, wherein the redistribution is achieved according to a recursive packing factor.
Claims14
A method for processing an image comprising:
- conforming, using one or more processors, a sampling of a quantity of pixel intensity data of an image to a statistical distribution, wherein the sampling comprises n points;
- redistributing the sampling, using the one or more processors, by recursively removing, for each of the n points, 1/m values from a range of distribution values available for point n−1 to generate a packed distribution of the sampling;
- mapping, using the one or more processors, the quantity of pixel intensity data to the packed distribution of the sampling to generate a quantity of contrast-enhanced pixel intensity data;
- and
- conforming, using the one or more processors, an intensity of at least one pixel of the image to the quantity of contrast-enhanced pixel intensity data to produce a contrast-enhanced image.
2 more elements
A non-transitory computer-readable medium having computer-executable instructions for performing a method comprising:
- conforming, using one or more processors, a sampling of a quantity of pixel intensity data of an image to a statistical distribution, wherein the sampling comprises n points;
- redistributing the sampling, using the one or more processors, by recursively removing, for each of the n points, 1/m values from a range of distribution values available for point n−1 to generate a packed distribution of the sampling;
- mapping the quantity of pixel intensity data to the packed distribution of the sampling to generate a quantity of contrast-enhanced pixel intensity data;
- and
- conforming an intensity of at least one pixel of the image to the quantity of contrast-enhanced pixel intensity data to produce a contrast-enhanced image.
2 more elements
A system for processing an image comprising:
- one or more processors;
- an image capture device;
- an image display device;
- and
- computer executable instructions that when executed cause the processor to:
- receive, from the image capture device, a quantity of pixel intensity data for an image;
- conform a sampling of the quantity of pixel intensity data to a statistical distribution, wherein the sampling comprises n points;
- redistribute the sampling by recursively removing, for each of the n points, 1/m values from a range of distribution values available for point n−1 to generate a packed distribution of the sampling;
- map the quantity of pixel intensity data to the packed distribution of the sampling to generate a quantity of contrast-enhanced pixel intensity data;
- conform, on the image display device, an intensity of at least one pixel of the image to the quantity of contrast-enhanced pixel intensity data to produce a contrast-enhanced image for display on an image display device.
7 more elements
Dependencies are inferred from the claim text.