Inverse Distance Squared

 

The Inverse Distance Squared method is an inverse distance to a power method. The minimum number of control points required for this transformation is four. A RMS value is not reported for this method because this method is a perfect interpolator at the control points. The equation is of the form:

image\inverse-eq.png

 

The left graphic is the file before using the inverse distance squared transformation.

The right graphic is the file after using an inverse distance squared transformation.