Television – Image signal processing circuitry specific to television – Special effects
Reexamination Certificate
2011-06-07
2011-06-07
Tran, Trang U (Department: 2422)
Television
Image signal processing circuitry specific to television
Special effects
C348S443000, C348S458000
Reexamination Certificate
active
07956930
ABSTRACT:
Techniques and tools for high accuracy position calculation for picture resizing in applications such as spatially-scalable video coding and decoding are described. In one aspect, resampling of a video picture is performed according to a resampling scale factor. The resampling comprises computation of a sample value at a position i,j in a resampled array. The computation includes computing a derived horizontal or vertical sub-sample position x or y in a manner that involves approximating a value in part by multiplying a 2nvalue by an inverse (approximate or exact) of the upsampling scale factor. The approximating can be a rounding or some other kind of approximating, such as a ceiling or floor function that approximates to a nearby integer. The sample value is interpolated using a filter.
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Klarquist & Sparkman, LLP
Microsoft Corporation
Tran Trang U
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