Interpolation

Bilinear transformation calculator

Bilinear transformation calculator
  1. How is bilinear interpolation calculated?
  2. How to do bilinear interpolation in Excel?

How is bilinear interpolation calculated?

Bilinear interpolation considers the closest 2 × 2 neighborhood of known pixel values surrounding the unknown pixel's computed location. It then takes a weighted average of these 4 pixels to arrive at its final, interpolated value.

How to do bilinear interpolation in Excel?

Name the cell containing the x- and y-values you entered in x and y, respectively. Select the row of x-values in the data table and name those “xvalues”. Select the column of y-values in the same table and name those “yvalues”. Next, select all the air velocity numbers (cells D7-L15) and name them “zvalues”.

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