Structural interpretation - 3-D Seismic Interpretation - page 82

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Fig. 3.16 Principle of a simple horizon autotracker.

Fig. 3.17 Autotrack (in yellow) of a horizon with high amplitude and consistent character along

the line.

entire line. Some protection against the effects of noise can be added by requiring that
the amplitude of the maximum should be similar to that measured on the previous trace;
if the amplitude change from one trace to the next exceeds a user-specified tolerance, the
tracker simply stops and makes no further picks along the line. This type of tracking will
work well only on a high-amplitude event, as shown in fig. 3.17 . On a low-amplitude
event, as shown in fig. 3.18 , the results are far less satisfactory. A possible solution is to
use a different type of tracking, which instead of just finding the maximum amplitude in