NOISE REDUCED COLOR IMAGE USING PANCHROMATIC IMAGE
First Claim
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1. A method for providing a noise-reduced value for a color pixel from a digital image having panchromatic pixels and color pixels, comprising:
- a. providing a first image having sparsely sampled panchromatic pixels and color pixels corresponding to at least two color photoresponses;
b. interpolating the panchromatic pixels to provide a full-resolution panchromatic image; and
c. providing a noise-reduced value for a particular color pixel in the first image, by;
i. selecting a neighborhood of color pixels surrounding and including the particular color pixel, each selected color pixel having a value and having the same color photoresponse as the particular color pixel;
ii. selecting a neighborhood of panchromatic pixels from the full-resolution panchromatic image, each selected panchromatic pixel having a value and being associated by location with a color pixel in the selected neighborhood of color pixels; and
iii. using the values of the pixels from the selected neighborhoods of color and panchromatic pixels to provide the noise reduced value for the particular color pixel.
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Abstract
A method for producing a noise-reduced digital color image, includes providing an image having panchromatic pixels and color pixels corresponding to at least two color photoresponses; providing from the image a panchromatic image and at least one color image; and using the panchromatic image and the color image to produce the noise-reduced digital color image by setting a plurality of color characteristics equal to the corresponding panchromatic characteristics at each color pixel location.
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Citations
4 Claims
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1. A method for providing a noise-reduced value for a color pixel from a digital image having panchromatic pixels and color pixels, comprising:
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a. providing a first image having sparsely sampled panchromatic pixels and color pixels corresponding to at least two color photoresponses; b. interpolating the panchromatic pixels to provide a full-resolution panchromatic image; and c. providing a noise-reduced value for a particular color pixel in the first image, by; i. selecting a neighborhood of color pixels surrounding and including the particular color pixel, each selected color pixel having a value and having the same color photoresponse as the particular color pixel; ii. selecting a neighborhood of panchromatic pixels from the full-resolution panchromatic image, each selected panchromatic pixel having a value and being associated by location with a color pixel in the selected neighborhood of color pixels; and iii. using the values of the pixels from the selected neighborhoods of color and panchromatic pixels to provide the noise reduced value for the particular color pixel. - View Dependent Claims (2, 3, 4)
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Specification