Calculating a visibility map for varying conditions

To calculate a visibility map for varying conditions, the atmospheric correction program computes a visibility map for the scene using Dark Vegetation pixels. These are defined based on NDVI and top-of-the-atmosphere reflectance in the red band.

To specify varying visibility settings:

  1. Specify the Minimum NDVI value.

    Enter a value from 0 to 1.

  2. Specify the Maximum Reflectance in Red value.

    Enter a value from 0.00 to 100

  3. Optionally specify the Average visibility, in kilometers.

    The visibility map calculation uses this approximate average visibility value as a starting point.

  4. Click OK to close the window and return to the Visibility and ground reflectance workflow panel.
Parent topic: The ATCOR Ground Reflectance workflow
Previous topic: Specifying visibility and ground reflectance
Next topic: Setting up normalization

© PCI Geomatics Enterprises, Inc.®, 2026. All rights reserved.