Why is bilinear considered upsampling? Wasn't the whole idea with bilinear filtering about combining like 4 squares into one in a kind of averaging approach?
keenan
In general, an interpolation scheme (including bilinear interpolation) enables you to evaluate a sampled function at an arbitrary set of new sample points. So, it could be used for upsampling, downsampling, or resampling.
Why is bilinear considered upsampling? Wasn't the whole idea with bilinear filtering about combining like 4 squares into one in a kind of averaging approach?
In general, an interpolation scheme (including bilinear interpolation) enables you to evaluate a sampled function at an arbitrary set of new sample points. So, it could be used for upsampling, downsampling, or resampling.