METHOD OF DEMOSAICING A DIGITAL MOSAICED IMAGE
First Claim
1. A method of demosaicing a digital mosaiced image, the method comprising:
- computing, for a first pixel in the digital mosaiced image, the first pixel being characterized by a first color component and a first set of gradient values in a plurality of orientations, gradient values in the plurality of orientations for a second pixel in the neighborhood of the first pixel;
estimating color values in the plurality of orientations corresponding to a second color component associated with the first pixel based on the set of first gradient values;
updating the first set of gradient values based at least in part on the computed gradient values;
selecting one of the plurality of orientations of the estimated color value based on the updated set of first gradient values; and
determining one of the estimated color values corresponding to the selected orientation to obtain a demosaiced value.
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Abstract
In one example embodiment, a method enables, computing, for a first pixel in the digital mosaiced image, the first pixel being characterized by a first color component and a first set of gradient values in a plurality of orientations, gradient values in the plurality of orientations for a second pixel in the neighborhood of the first pixel. Color values in the plurality of orientations corresponding to a second color component associated with the first pixel based on the set of first gradient values are estimated. The first set of gradient values based at least in part on the computed gradient values is updated. One of the plurality of orientations of the estimated color value based on the updated set of first gradient values is selected and one of the estimated color values corresponding to the selected orientation is determined.
71 Citations
35 Claims
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1. A method of demosaicing a digital mosaiced image, the method comprising:
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computing, for a first pixel in the digital mosaiced image, the first pixel being characterized by a first color component and a first set of gradient values in a plurality of orientations, gradient values in the plurality of orientations for a second pixel in the neighborhood of the first pixel; estimating color values in the plurality of orientations corresponding to a second color component associated with the first pixel based on the set of first gradient values; updating the first set of gradient values based at least in part on the computed gradient values; selecting one of the plurality of orientations of the estimated color value based on the updated set of first gradient values; and determining one of the estimated color values corresponding to the selected orientation to obtain a demosaiced value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 27, 29, 30, 32)
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17. A method of demosaicing a digital mosaiced image, the method comprising:
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computing gradient values in a plurality of orientations for a first pixel corresponding to a first color component; estimating color values in the plurality of orientations corresponding to a second color component associated with the first pixel based on the computed gradient values; and obtaining a final color value from the estimated color values by computing inverse gradient weighted average using a combination of the estimated color values. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 28, 31, 33)
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34. A method of demosaicing a digital mosaiced image, the method comprising:
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obtaining demosaiced values from the digital mosaiced image; and performing a 1 dimensional frequency based transformation on the obtained demosaiced values. - View Dependent Claims (35)
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Specification