f Error Analysis for the PDA Tracker in an Interpretation Environment

Seismic surveys are routinely carried out to give 3D volumes of seismic data, so tracking algorithms which work in 3D have had to be developed. Many of the commercially available packages contain tracking algorithms, which generally use slope-fitting and amplitude matching between two given points. The autotracker available in the Landmark interpretation package (SeisWorks 3D) reguires the input of a fairly dense seed grid of horizon points, which can be time-consuming, and contains no automatic assessment of the accuracy of the pick. Clearly, a method for mathematically analysing the tracker accuracy is of importance, and the method described here enables an accurate assessment of the tracker confidence.