Data Compresion and Filtering by Decimation

Portion of the full matrix is shown here. Rows range from 165 to 200 and comlumns from 125 to 150.

Raw data is displayed in the first image. The data was decimated by the factor 2 (every second row and every second column are extracted) and this new matrix is interpolated by the same factor, using spline refinement. This is equivalent to the low-pass filtering. The low-passed dataset lost some of the features.

Click here to see the VRML version!