1. In the Control Panel, open the Tool menu and click Mistie Correction - Automatic. This will open the wizard that will guide you through the steps to automatically correct the misties.
2. After each step, click Next to continue or Back to return to the previous step to adjust the parameters. 

The following describes the steps in the wizard to automatically correct misties.

• Data Type: Select the type (class) of data to be corrected.
• Volume(s): Click the Add icon to select the volume(s) to be corrected. 

Reference Data: Select a 2D line or a 3D volume to be used as the reference data. This is optional. If no reference data is defined, all 2D lines or 3D volumes will be adjusted based on the results of the mistie analysis.

• Correlation window: Select Fixed time to define a fixed TWT range for the correlation window. Type the time range at From and To. Alternatively, select Horizon and define a horizon to be used in the correlation window for the mistie calculation. Type the vertical range above and below the horizon to be used in the correlation window.
• Maximum shift: Type the maximum time shift in the mistie calculation.
• Traces to correlate at 2D line intersections: Type the number of traces to correlate in each data set in the mistie calculation. By default, a single trace from each 2D line is compared, to where they intersect. Increasing this number will compare multiple traces and use the average result, which may be useful in areas of poor data quality. This option is only available if you are dealing with 2D data.
• Max number of traces to correlate within 3D-3D intersection regions: 3D-3D intersections can contain a very large number of traces. To save time, no more than this number of traces will be compared, randomly sampled from within the intersection region. •This option is only available if you are dealing with 3D data.
• CPU threads: The number of parallel tasks to run, to increase calculation speed. The default value (the number of CPU cores in the computer, minus one) is recommended but will use most of your system's resources. If you want to work on other tasks while this runs, then you may want to reduce the number of threads.

For every correction element (Vertical shift, Phase and Amplitude), select the update type you want to apply in the mistie calculation. Available options include the following:

• Per 3D volume / 2D line: Selecting this will apply a unique correction to each 3D volume and/or 2D line in the survey.
• Per volume: Calculate a single correction for a given volume and apply that one correction to all of its elements. In the case of a 2D volume, all lines will be changed by the same amount.
• Don't correct: Correction is not required.

If you are correcting misties between two intersecting 3D volumes, the wizard will display an additional step allowing you to select a probe/polygon to constrain the mistie calculation within a lateral area. By default, Insight will use the entire area of overlap to determine the desired mistie correction.

• Constrain to area: Select a probe/polygon to constrain the mistie calculation within the selected probe/polygon. If you want to calculate the mistie for the whole overlapping region, leave this blank.

When you have defined the update types, click Next and Insight will start calculating the mistie corrections. You will see a progress bar with the estimated time of the calculation process.

For more information on how the mistie corrections are calculated, see How it Works (Automatic Mistie).

Once the calculation is completed, the Overview of Changes window will be displayed. Here, you can see the shift, phase and amplitude scale corrections that will be made to every line or volume in the correlation window. 

Click the Save Mistie Summary button to save a summary of the configuration and the results, which can be applied in the future using the Load Auto-Mistie Corrections from File button in the Volume Configurator panel.

Click Back if you want to reconfigure the correction parameters. Click Next to proceed with the corrections.

1. The results of mistie correction calculations will be displayed.
2. In the table, double-click a row (or right-click and select Visualise mistie data for the intersection), to examine a selected intersection. This will open an intersection QC view that compares traces from the intersecting volumes before correction, with ideal mistie correction applied and the final mistie correction applied.