Image analysis – Image transformation or preprocessing – Changing the image coordinates
Reexamination Certificate
2007-10-30
2011-11-08
Chen, Wengpeng (Department: 2624)
Image analysis
Image transformation or preprocessing
Changing the image coordinates
C348S452000
Reexamination Certificate
active
08055102
ABSTRACT:
A vector interpolator optimizes the conversion of an interlaced signal to a non-interlaced signal. The vector interpolator improves the visual clarity of slanted features in a displayed image by adjusting the luminance value of each pixel such that the appearance of “steps” or “jaggies” in the features is reduced. For each pixel, the vector interpolator determines a similarity measure for the pixels within a predetermined area around the pixel. From the similarity measure, an angle for interpolation is selected. The luminance value is then interpolated along the selected vector corresponding to the angle and applied to the pixel. One or more ambiguity measures such as a local edge count ambiguity measure may also be computed to indicate the reliability of the computed luminance value.
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Chen Wengpeng
Marvell International Ltd.
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