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
- In the Control Panel, open the Class tab (see Creating a Class).
- In the tree, select a class to open the Details Panel.
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.
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.