Calculating noise from multiple digital images having a common noise source
First Claim
1. A method for estimating a noise characteristic value for a plurality of digital images that are affected by a common noise source, comprising the steps of:
- a) receiving a plurality of source digital images that are affected by a common noise source, each source digital image including a plurality of pixels;
b) calculating a total number of pixels included in the source digital images;
c) receiving a predetermined target number of noise estimates to be calculated for the source digital images;
d) using the total number of pixels and the predetermined target number of noise estimates to calculate one or more pixel sampling parameters for the source digital images;
e) using the source digital images and the one or more pixel sampling parameters to calculate a predetermined number of noise estimates; and
f) using the noise estimates to calculate a noise characteristic value for the source digital images.
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Abstract
A method for estimating a noise characteristic value for a plurality of digital images that are affected by a common noise source includes receiving a plurality of source digital images that are affected by a common noise source, each source digital image including a plurality of pixels; calculating a total number of pixels included in the source digital images; and receiving a predetermined target number of noise estimates to be calculated for the source digital images. The method also includes using the total number of pixels and the predetermined target number of noise estimates to calculate one or more pixel sampling parameters for the source digital images; using the source digital images and the one or more pixel sampling parameters to calculate a predetermined number of noise estimates; and using the noise estimates to calculate a noise characteristic value for the source digital images.
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Citations
18 Claims
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1. A method for estimating a noise characteristic value for a plurality of digital images that are affected by a common noise source, comprising the steps of:
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a) receiving a plurality of source digital images that are affected by a common noise source, each source digital image including a plurality of pixels;
b) calculating a total number of pixels included in the source digital images;
c) receiving a predetermined target number of noise estimates to be calculated for the source digital images;
d) using the total number of pixels and the predetermined target number of noise estimates to calculate one or more pixel sampling parameters for the source digital images;
e) using the source digital images and the one or more pixel sampling parameters to calculate a predetermined number of noise estimates; and
f) using the noise estimates to calculate a noise characteristic value for the source digital images. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification