Specifying haze and cloud masking settings

To specify haze and cloud masking settings:

From the Atmospheric Correction Workflows Tree List, select Haze and cloud masking. The Haze and Cloud Masking panel appears.
In the Cloud Masking section, specify the Lowest and Highest reflectance threshold values, (%) to calculate the cloud mask using reflectance in the blue or green bands of the input scene.
Do one of the following:
- Manually enter the Lowest and Highest threshold values (1-100%). Enter the lowest and highest values for the clouds, from your TOA reflectance output image.
  
  To experiment with different cloud masking threshold values while visualizing the effects of the changes, click Settings.
- Import the cloud masks from a file: click the down arrow in the Import from File field to select a pix file that contains an existing cloud mask. If applicable, select the layer that contains bitmaps defining the clouds. The file must be in a GDB-supported format, and must be reprojectable.
- Select Omit to disable the cloud masking operation (for example, if your image contains no clouds, or if you want to skip the cloud masking process).
In the Water Masking section, specify the Highest in NIR and Highest in SWIR reflectance threshold values, (%) to calculate the water mask using reflectance in the NIR and SWIR bands of the input scene.
Do one of the following:
- Manually enter the Highest in NIR and Highest in SWIR threshold values (1-100%).
- Import the water masks from a file: click the down arrow in the Import from File field to select a pix file that contains an existing water mask. If applicable, select the layer that contains bitmaps defining the water bodies. The file must be in a GDB-supported format, and must be reprojectable.
- Select Omit to disable the water masking operation.
To remove haze from the input scene, select the Perform Haze Removal checkbox.
In the Haze Cover Percentage field, specify the percentage of the image that is covered in haze.
In the Apply haze correction for bands under field, specify the maximum wavelength of the band on which to apply haze removal. The default is 0.85 micrometers.