2D Filtering

The 2D Filtering extension provides the 2D-FFT filters library to enable the application of common Fourier domain filters to gridded data in Oasis montaj. You can quickly process and enhance gridded datasets by applying a wide range of geophysical and mathematical filters. It enables you to define your own filters, modify the filter specific parameters, and apply up to six filters together in a single operation.

The extension includes an Interactive Spectrum Filter that enables you to quickly preview filtered grids. The 2D Interactive Spectrum Filter solution is a dynamic visual tool that provides an interactive slider enabling you to adjust filter parameters and preview the results instantly. With this tool, you can quickly preview how each filter enhances specific features you are considering before applying the filter to your entire grid.

Working in Oasis montaj requires a Project (*.gpf) . A project encompasses every item in your workspace, from the data files in your project (e.g., databases, grids, maps, voxels, geosurfaces, 3D views, etc.) to the tools used (histograms, scatter plots, etc.) and the project setup including the menus you have displayed.

To start working with the 2D Filtering extension, we recommend that you open a new project and then load the 2D Filtering related menus.

Open a new project:

1. On the Project menu select New. The New Project dialog opens.

   You can also select the Create new project option on the startup dialog, which is displayed when you launch Oasis montaj.

2. In the New Project dialog, specify the name and location of your new project file (*.gpf) and click the Save button.

3. The new project is opened, which enables the main menus, the icons on the main toolbars, and the Project Explorer. These visual clues indicate that you are ready to start working with the system.

Load the menu(s):

1. On the Project menu select Manage Menus, or click the Manage Menus icon on the Project Explorer toolbar. The Manage Menus dialog appears.

2. Expand the Extensions node, select the 2D Filtering entry and click OK. The menus related to the 2D Filtering extension will appear on the main menu bar.
   The menu system has been structured to enable you to quickly access a variety of tools and to provide an easy-to-use workflow to lead you through the main processing and filtering functions that you can perform with the extension.

Once you have loaded the menu(s), you will have access to the 2D Filtering Help by clicking on the Help button on any of the dialogs:

• The reference topic for the dialog of interest will appear.

• You can navigate to another topic of interest from the Help Topics tab.

• You can search for a specific topic by typing in keywords in the Search tab.