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Description

2D high-resolution MultiFocusing (MF) search engine. Refines optimal MF parameters — emergence angle, wavefront curvatures, and stacking velocity — at each CDP bin via a finer search around results from a prior coarse MF engine pass. Improves stacking quality, signal-to-noise ratio, and imaging accuracy of the final stack.

Input data

Storage file

MF database file produced by a prior coarse MF search. The Hi Search reads coarse-grid parameters from this file and writes the refined high-resolution results back to it.

GMFPickingItem

Velocity constraint picking defining the search corridor for the refinement. If not provided, the full velocity range is searched.

SEG-Y data handle

Input pre-stack 2D seismic dataset used for MF summation and coherency computation during the high-resolution search.

Input sorted headers (of seismic data)

Sorted trace header index for efficient data access during calculation.

Input Stack Line

Output geometry object defining CDP bin locations for the search. Determines the spatial grid over which the high-resolution refinement is performed.

MF Tables Parametrization

Search parametrization tables specifying velocity/angle ranges, aperture, and grid step for the high-resolution search pass.

Parameters

Compression

Enables compressed storage of MF parameters to reduce the size of the output database file.

Compression Factor

Degree of compression to apply. Higher values yield smaller files but lower precision of the stored MF parameters.

Save to storage each

Flush interval — results are written to the storage file every N processed bins. Lower values reduce the risk of data loss if the job is interrupted.

Calculation area

Spatial subset restriction for the search. Use the First/Last bin parameters to limit processing to a specific segment of the line.

First bin to calc(-1 no limit)

First CDP bin to process. Set to -1 for no lower limit (process from the first available bin).

Last bin to calc(-1 no limit)

Last CDP bin to process. Set to -1 for no upper limit (process through the last available bin).

Automatic determination

When enabled, automatically detects the valid two-way time range from the input data. When disabled, the First Time and Last Time parameters define the time window.

First Time

Start of the two-way time window (ms) for the high-resolution search. Used only when Automatic determination is disabled.

Last Time

End of the two-way time window (ms) for the high-resolution search. Used only when Automatic determination is disabled.