Detecting red eye filter and apparatus using meta-data
First Claim
1. A method of detecting and correcting an eye defect within an acquired digital image comprising a multiplicity of pixels indicative of luminance and color, the pixels forming various shapes within the image, the method comprising:
- acquiring a digital image including said multiplicity of pixels indicative of luminance and color;
detecting a candidate eye defect region based on degree of color or shape, or both, within the digital image;
determining a size of the candidate eye defect region;
analyzing meta-data information including image acquisition device-specific information, including distance information as recorded by an auto-focus mechanism of the portable digital camera, and information describing conditions under which the image was acquired;
analyzing anthropometric information including statistics relating to relationships between said size of said candidate eye defect region and said distance information as recorded by said auto-focus mechanism and between said size of said candidate eye defect region and a location of a second detected eye, lips, nostrils or a surrounding face, or combinations thereof; and
determining, based at least in part on said meta-data and anthropometric information, and on a probability of detection of said second detected eye, lips, nostrils or said surrounding face, or combinations thereof, whether said candidate eye defect region is suspected as including an eye defect region; and
filtering said candidate eye defect region from the digital image.
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Accused Products
Abstract
A method of filtering a red-eye phenomenon from an acquired digital image including a multiplicity of pixels indicative of color, the pixels forming various shapes of the image, includes analyzing meta-data information, determining one or more regions within the digital image suspected as including red eye artifact, and determining, based at least in part on the meta-data analysis, whether the regions are actual red eye artifact. The meta-data information may include information describing conditions under which the image was acquired, captured and/or digitized, acquisition device-specific information, and/film information.
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Citations
21 Claims
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1. A method of detecting and correcting an eye defect within an acquired digital image comprising a multiplicity of pixels indicative of luminance and color, the pixels forming various shapes within the image, the method comprising:
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acquiring a digital image including said multiplicity of pixels indicative of luminance and color; detecting a candidate eye defect region based on degree of color or shape, or both, within the digital image; determining a size of the candidate eye defect region; analyzing meta-data information including image acquisition device-specific information, including distance information as recorded by an auto-focus mechanism of the portable digital camera, and information describing conditions under which the image was acquired; analyzing anthropometric information including statistics relating to relationships between said size of said candidate eye defect region and said distance information as recorded by said auto-focus mechanism and between said size of said candidate eye defect region and a location of a second detected eye, lips, nostrils or a surrounding face, or combinations thereof; and determining, based at least in part on said meta-data and anthropometric information, and on a probability of detection of said second detected eye, lips, nostrils or said surrounding face, or combinations thereof, whether said candidate eye defect region is suspected as including an eye defect region; and filtering said candidate eye defect region from the digital image. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A portable digital camera, including optics and a sensor for acquiring digital images, a processor and one or more processor-readable media having embedded code therein for programming the processor to perform a method of detecting and correcting eye defects within an acquired digital image that comprises a multiplicity of pixels indicative of luminance and color, the pixels forming various shapes within the image, the method comprising:
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acquiring a digital image including said multiplicity of pixels indicative of luminance and color; detecting a candidate eye defect region based on degree of color or shape, or both, within the digital image; determining a size of the candidate eye defect region; analyzing meta-data information including image acquisition device-specific information, including distance information as recorded by an auto-focus mechanism of the portable digital camera, and information describing conditions under which the image was acquired; analyzing anthropometric information including statistics relating to relationships between said size of said candidate eye defect region and said distance information as recorded by said auto-focus mechanism and between said size of said candidate eve defect region and a location of a second detected eve, lips, nostrils or a surrounding face, or combinations thereof; and determining, based at least in part on said meta-data and anthropometric information, and on a probability of detection of said second detected eve, lips, nostrils or said surrounding face, or combinations thereof, whether said candidate eye defect region is suspected as including an eye defect region; and filtering said candidate eye defect region from the digital image. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. One or more non-transitory processor-readable media having embedded code therein for programming a processor to perform a method of detecting and correcting defect eyes within an acquired digital image that comprises a multiplicity of pixels indicative of luminance and color, the pixels forming various shapes within the image, the method comprising:
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acquiring a digital image including said multiplicity of pixels indicative of luminance and color; detecting a candidate eye defect region based on degree of color or shape, or both, within the digital image; determining a size of the candidate eye defect region; analyzing meta-data information including image acquisition device-specific information, including distance information as recorded by an auto-focus mechanism of the portable digital camera, and information describing conditions under which the image was acquired; analyzing anthropometric information including statistics relating to relationships between said size of said candidate eye defect region and said distance information as recorded by said auto-focus mechanism and between said size of said candidate eye defect region and a location of a second detected eye, lips, nostrils or a surrounding face, or combinations thereof; and determining, based at least in part on said meta-data and anthropometric information, and on a probability of detection of said second detected eye, lips, nostrils or said surrounding face, or combinations thereof, whether said candidate eye defect region is suspected as including an eye defect region; and filtering said candidate eye defect region from the digital image. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification