Each pixel in the image is replaced with a gray value dependent on the distance to the nearest obstacle pixel, generally a boundary pixel. Different methods can be used to calculate the distance.
Notat | |
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These options are described in Del 2, “Common Features”. |
“Metric” is a topology term. Three methods are available:
Euclidean default: the distance is a line.
Manhattan
Chebyshev
Default is 0. Increasing this value selects higher lightness pixels
Default is 100. Decreasing this value makes result lighter.
Number of computations for grayscale averaging.
This option is checked by default. If you uncheck it, no blur is created.