Image analysis – Image enhancement or restoration – Intensity – brightness – contrast – or shading correction
Reexamination Certificate
2007-01-23
2007-01-23
Miriam, Daniel (Department: 2624)
Image analysis
Image enhancement or restoration
Intensity, brightness, contrast, or shading correction
C345S617000
Reexamination Certificate
active
10331207
ABSTRACT:
A method of reducing noise in an image by decomposing the digital signal representation of the image into a sequence of detail images representing detail at successive scales and a residual image and modulating pixels of at least some of the detail images by applying modulating coefficients. The modulating coefficients are deduced from a single contrast-to-noise ratio image which represents the local contrast-to-noise ratio in each pixel at a predefined scale.
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Agfa-Gevaert N.V.
Houston Eliseeva LLP
Miriam Daniel
Rosario Dennis
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