The first technique we are going to try is Delaunay triangulation with linear interpolation of rainfall values inside each triangle. The result is shown in Figure 6a. Does it succeed in hiding the acquisition footprint? Figure 6b provides a comparison between interpolated and known data values. It also indicates the value of the correlation coefficient.
Figure 6. (a) Rainfall data interpolated using Delaunay triangulation. (b) Correlation between interpolated and true data values.