Apparatus and method for shift invariant differential (SID) image data interpolation in fully populated shift invariant matrix
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United States of America Patent
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Oct 18, 2011
Grant Date -
Jun 5, 2008
app pub date -
Nov 28, 2007
filing date -
Nov 29, 2006
priority date (Note) -
Expired
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Abstract
An image processing system for interpolating image data is comprised of a shift invariant point determining device, an illumination averager, a second order differentiator, and color data calculator. The shift invariant point determining device ascertains shift invariant points within the mosaic color element array pattern. The illumination averager determines average illumination values of clusters of a plurality of pixels. The second order differentiator determines a second order derivative of the average illumination values of the clusters of the plurality of pixels. The color data calculator determines color data for each of the plurality of pixels from the image data and second order derivative. A second order derivative scaler multiplies the second order derivative by a scaling factor for selectively smoothing and sharpening the second order derivative. A color data averager averages color data values of adjacent pixels to a resolution of the image data.
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