24.3.2. Resampling and Interpolation
Even though the IP expresses output (X,Y) positions as integers, the corresponding input (U,V) values are fractional because the mappings do not coincide with the exact pixel positions. The pixel position F corresponds to the position (floor(U), floor(V)) The figure shows the fractional offsets (ΔU and ΔV) as the fractional parts of U and V.
The IP implements the required interpolation of the input data samples as supplied by the l line store. The IP provides information from the line store for each pixel position in the output image and includes the kernel data and the fractional U and V positions.
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