GeoTIFF is a georeferenced raster image format. g-Space can rasterize the inline and crossline sections of a 3D post-stack volume and write them as georeferenced .tif images. This is an export-only workflow driven by the Export 3D data to GeoTiff wizard.

Purpose

Produce ready-to-map images of selected seismic sections. Each requested inline or crossline is colored with a palette and saved as a separate GeoTIFF that carries the section's real-world coordinates, so the images line up correctly in GIS and mapping software. There is no import back from GeoTIFF.

Launching the export

In the Data Manager, right-click a loaded 3D post-stack volume and choose Export inlines/crosslines to GeoTIFF. First select the destination folder, then the Export 3D data to GeoTiff wizard opens. Prestack volumes cannot be exported to GeoTIFF.

[image: placeholder_Data_Manager_context_menu_with_Export_in.png]

Step-by-step

1. Right-click the 3D volume and choose Export inlines/crosslines to GeoTIFF.
2. Pick the output folder in the Save GeoTIFF dialog.
3. In the Export inlines group, keep Export inlines checked to write inline sections, then set Start inline, Step inline and End inline. The ranges default to the full extent of the volume.
4. In the Export crosslines group, do the same for Start crossline, Step crossline and End crossline. Uncheck a group to skip that direction.
5. Choose a Palette for the color mapping and a Normalization mode (Seismic or Matrix).
6. Press OK to run the export.

[image: placeholder_Export_3D_data_to_GeoTiff_wizard_with_in.png]

Parameters and notes

• Inline / crossline ranges — start, step and end select which sections are rasterized; the step lets you export every N-th line.
• Palette — the chosen color palette maps sample amplitudes to RGB colors in the output image.
• Normalization — Seismic uses a symmetric range around zero (equal positive and negative limits), while Matrix scales to the actual minimum and maximum of the section.
• Output files — one 3-band RGB GeoTIFF is written per section, named after the volume with an IL_ or XL_ suffix and the line number, e.g. MyVolume_IL_1200.tif.
• Georeferencing — each image is tagged with ground-control points from the section's bin coordinates and the project base coordinate reference system, so it can be overlaid on a map.
• Sections are corrected to the project depth datum before rasterizing, so all exported images share a consistent datum.

See Also

Image Data Formats | Export seismic | Seismic Data Formats