System or method for enhancing an image
First Claim
Patent Images
1. An image enhancement system that is configured to create an enhanced image from an initial image, comprising:
- a power transform subsystem, said power transform subsystem providing for a power transform method for creating a power image from the initial image;
a logarithm transform subsystem, said logarithm transform subsystem providing for a logarithm transform method for creating a log image from the initial image; and
a fusion subsystem, said fusion subsystem providing for a fusion method for creating said enhanced image, wherein said enhanced image is influenced by said log image and said power image.
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Abstract
A system and method for enhancing the contrast within an image. An enhanced image can be generated in a real-time or substantially real-time manner from an initial image. A low-contrast image is enhanced, including the visibility of text within the low-contrast image. A logarithm transform method is used to enhance the overall contrast and visibility within the image. A power transform method is used to enhance the visibility and contrast of written text, symbols and other forms of signs within the enhanced image.
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Citations
23 Claims
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1. An image enhancement system that is configured to create an enhanced image from an initial image, comprising:
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a power transform subsystem, said power transform subsystem providing for a power transform method for creating a power image from the initial image;
a logarithm transform subsystem, said logarithm transform subsystem providing for a logarithm transform method for creating a log image from the initial image; and
a fusion subsystem, said fusion subsystem providing for a fusion method for creating said enhanced image, wherein said enhanced image is influenced by said log image and said power image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for creating an enhanced image from an initial image, comprising:
a computer, said computer providing for;
identifying a plurality of pixel values within the initial image;
performing a logarithm transform method and a power transform method on the initial image to create a plurality of interim images;
invoking a linear transform method on at least two of said interim images; and
fusing at least two of said interim images into the enhanced image. - View Dependent Claims (10, 11, 12, 13)
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14. A method for enhancing an image, comprising:
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identifying a plurality of pixel values in an initial image;
creating a first copy and a second copy of the plurality of pixel values;
performing a logarithm transform method on the first copy of pixel values to create a log image;
performing a power transform method on the second copy of pixel values to create a power image;
combine the power image and log image into the enhanced image. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. An image enhancement system that is configured to create an enhanced image from an initial image, comprising:
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a power transform subsystem, said power transform subsystem providing for a power transform method for creating a power image from the initial image;
a logarithm transform subsystem, said logarithm transform subsystem providing for a logarithm transform method for creating a log image from the initial image;
a first Laplacian pyramid representation built from the log image and a second Laplacian pyramid representation built from the power image; and
a pyramid fusion subsystem that fuses said first and second Laplacian pyramid transformations into an enhanced, pyramid fused image.
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23. An image enhancement system that is configured to create an enhanced image from a plurality of initial images from multiple camera exposures, comprising:
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a Laplacian pyramid representation built from each of the initial images; and
a pyramid fusion subsystem that fuses the Laplacian pyramid representation into the enhanced, pyramid fused image.
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Specification