Method and apparatus for finding and correcting single-pixel noise defects in a two-dimensional camera pixel field and a camera provided with such an apparatus
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United States of America Patent
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Oct 7, 2008
Grant Date -
Jun 1, 2006
app pub date -
Nov 9, 2004
filing date -
Nov 9, 2004
priority date (Note) -
Expired
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Abstract
A method for finding and correcting single-pixel noise defects in a two-dimensional camera pixel field assigns to such pixel defect an interpolation multi-pixel environment of the same color as the pixel to be corrected for therefrom deriving an interpolated substitute pixel value.In particular, the method executes the following steps: assigns a multi pixel checking environment of the same color to a possibly defect pixel and checks the possibly defect pixel to the checking environment for finding a correct or an incorrect pixel assigns to an incorrect pixel a plurality of predictive multi-pixel environments each oriented in a respective different orientation with respect to the incorrect pixel for therefrom deriving respective viability characterizations for interpolation in the associated orientation finds the highest viability characterization and thereby selects an appropriate multi-pixel interpolation environment of the same color for actually interpolating a substitute pixel value.
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