Glossary

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Reference3D

Reference3D is a geocoded, worldwide data base, made up of 3 information layers:- DEM (digital elevation model), - HRS orthoimages, -Quality and traceability data.

Resampling

The values of output pixels are obtained by interpolation based on the values of input pixels combined with the calculated distortion. The most commonly used resampling techniques are nearest-neighbour interpolation, bilinear interpolation and cubic convolution.