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Line 29: + + + − The figure to the right is a sketch of how such an autopicker works. If any of the search criteria are not met (amplitude out of range, no similar feature in the dip window, etc.), the autotracker stops tracking at that trace. More sophisticated autopickers let the user specify additional criteria to control the picking.+ − − [[file:interpreting-3-d-seismic-data_fig13-5.png|thumb|{{figure number|13-5}}. Copyright: Dorn, 1998; courtesy SEG.]]
Picking horizons in 3-D data (view source)
Revision as of 14:07, 18 February 2014
, 14:07, 18 February 2014→Autopicking
==Autopicking==
==Autopicking==
[[file:interpreting-3-d-seismic-data_fig13-5.png|thumb|{{figure number|1}. Copyright: Dorn, 1998; courtesy SEG.]]
Autopicking (or autotracking) has been around in interactive interpretation systems since the early 1980s. The concept behind autopicking is quite simple. The interpreter places seed picks on lines and/or cross-lines in the 3-D survey. These seed points are then used as initial control for the autopicking operation. The algorithm looks for a similar feature on a neighboring trace. If it finds such a feature within specified constraints, it picks that trace and moves on to the next trace. Simple autopickers allow the user to specify a feature to be tracked, an allowable amplitude range, and a dip window in which to search.
Autopicking (or autotracking) has been around in interactive interpretation systems since the early 1980s. The concept behind autopicking is quite simple. The interpreter places seed picks on lines and/or cross-lines in the 3-D survey. These seed points are then used as initial control for the autopicking operation. The algorithm looks for a similar feature on a neighboring trace. If it finds such a feature within specified constraints, it picks that trace and moves on to the next trace. Simple autopickers allow the user to specify a feature to be tracked, an allowable amplitude range, and a dip window in which to search.
[[:file:interpreting-3-d-seismic-data_fig13-5.png|Figure 1]] is a sketch of how such an autopicker works. If any of the search criteria are not met (amplitude out of range, no similar feature in the dip window, etc.), the autotracker stops tracking at that trace. More sophisticated autopickers let the user specify additional criteria to control the picking.
==Feature and correlation trackers==
==Feature and correlation trackers==