Volume and Display Interpolation Methods

The Interpolation method controls how values are obtained when interpolating between samples, for example when performing an amplitude extraction or displaying a horizontal slice through a volume.

Changing the Interpolation Mode

Select interpolate density display
  1. In the Control Panel, open the Class tab (see Creating a Class).
  2. In the tree, select a class to open the Details Panel.
  3. At Interpolation method, choose the mode at which the values are obtained when interpolating between samples.
    • Sinc — Use this for seismic data.
    • Edge Detecting — Use this for blocky data, such as impedance volumes.
    • Lagrangian — Use this for smoothly varying data, but not velocities.
    • Linear — Use this for ZT and TZ velocity volumes.
    • Nearest — Use this for integer volumes, such as "most likely LID".
    • Interval — Use  this for interval velocities.
  4. At Display interpolation, select an option to control how data is interpolated onto the screen when zoomed in. Select Bicubic for a smooth display or select Nearest to see individual bins.
    • Nearest — Quickest to render but provides the lowest quality of result. Selecting this will apply the same value to all pixels within a bin, based on the nearest true bin value.
    • Bilinear — A simple linear interpolation between adjacent points to render the colour information and is slightly slower than the nearest neighbour method.
    • Bicubic — Uses bicubic splines between adjacent points to interpolate your data. This provides the best output at the expense of performance.