Uniform and non-uniform dynamic range remapping for optimum image display
First Claim
Patent Images
1. A uniform and non-uniform dynamic range remapping system for optimum image display comprising:
- background estimation means for receiving an original image and for providing an estimated background image;
mask generation means for receiving an original image;
parameter estimation means for receiving an original image; and
,dynamic range remapping means connected to said background estimation means, said mask generation means and said parameter estimation means for transmitting an output image;
wherein said dynamic range remapping means comprises;
additive algorithm means; and
means for using a minimum and maximum value of said original image to remap dynamic range of processed image to said original image.
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Abstract
A contexture dependent dynamic range remapping system utilizes background estimation, mask generation, parameter estimation and dynamic range remapping of an original image to provide an optimum output image. The dynamic range remapping includes an additive algorithm or a multiplicative algorithm or a combination of both algorithms. The output from the algorithms could be filtered by an edge-preserving filter to provide a filtered output image. The system adaptively compresses the dynamic range of the DC and slow-varying signals in the original image significantly while preserving and enhancing fine structures.
77 Citations
33 Claims
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1. A uniform and non-uniform dynamic range remapping system for optimum image display comprising:
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background estimation means for receiving an original image and for providing an estimated background image; mask generation means for receiving an original image; parameter estimation means for receiving an original image; and
,dynamic range remapping means connected to said background estimation means, said mask generation means and said parameter estimation means for transmitting an output image; wherein said dynamic range remapping means comprises; additive algorithm means; and means for using a minimum and maximum value of said original image to remap dynamic range of processed image to said original image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A uniform and non-uniform dynamic range remapping system for optimum image display comprising:
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a background estimator for receiving an original image and for providing an estimated background image; a mask generator connected to said background estimator for receiving said estimated background image and an original image; a parameter estimator for receiving an original image; and
,a dynamic range remapper connected to said background estimator, said mask generator and said parameter estimator for transmitting an output image;
wherein said dynamic range remapper comprises;an additive algorithm; and means for using a minimum and maximum value of said original image to remap dynamic range of processed image to said original image. - View Dependent Claims (23)
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24. A method of performing uniform and non-uniform dynamic range remapping for optimum image display comprising the steps of:
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estimating a background of an original image to provide an estimated background image; generating a binary mask image from said original image and said estimated background image; estimating parameters of said original image; and
,remapping dynamic range therefore providing an output image;
wherein remapping dynamic range comprises the steps of;utilizing a multiplicative algorithm; and using a minimum and maximum value of said original image to remap dynamic range of processed image to said original image. - View Dependent Claims (25)
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26. A uniform and non-uniform dynamic range remapping system for optimum image display comprising:
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background estimation means for receiving an original image and for providing an estimated background image; mask generation means for receiving an original image; parameter estimation means for receiving an original image; and dynamic range remapping means connected to said background estimation means, said mask generation means and said parameter estimation means for transmitting an output image; wherein said dynamic range remapping means comprises; multiplicative algorithm means; and means for using a minimum and maximum value of said original image to remap dynamic range of processed image to said original image. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33)
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Specification