H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 1/409 (2006.01) G06T 5/00 (2006.01) G06T 5/10 (2006.01) H04N 1/46 (2006.01)
Patent
CA 2348325
An apparatus for analyzing the broadband noise content of a digital image comprises the following: a means of automatically identifying regions of originally constant color in the image by analysis of the variance of pixel values of regions of the image; a means of automatically detecting and discarding regions deemed to be unrepresentative of the true noise content of an image, including under- and over- exposed regions; a means of allowing the user to manually select some or all required constant color regions if desired; and, a means of analyzing such constant color regions to generate a parametric or non-parametric model of the noise in the image, including frequency characteristic within and between channels and other characteristics such as phase which might describe structured noise.
Adobe Systems Incorporated
Osler Hoskin & Harcourt Llp
Shekter Jonathan Martin
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