Exclusion Zone Filter

Applies row- or column-wise exclusion zones to an image.

Category	Image Processing
Node
Parameters	Orientation: either Columns or Rows; selects to which direction to apply the exclusion zones to. Note that in Rows mode this filter will not work in line scan mode, it can only be applied to entire images. (In Columns mode it does work in line scan mode though.) Number of zones: the number of exclusion zones to apply. For each zone: Start: the first pixel that is part of the exclusion zone; the first pixel in the image is denoted by 1. Size: the size of that specific exclusion zone in pixels.
Inputs	Input: the input data set
Outputs	Output: the data with the exclusion zones removed

Effect of the Filter

For each row or column (see the Orientation parameter) that is part of a specified exclusion zone, replace all values in that row or column with:

• NaN (not a number) for floating point values

• Background for masks

• Not classified for classification data

• 0 for integer counts

When applied to the following example image (containing floating point data), with an applied Jet color map:

Applying the filter with a single exclusion zone in Columns orientation with a start of 5 px and a size of 3 px will look like:

Switching the filter to Rows orientation will change the image to: