Returns the distance, as determined by the specified distance metric, to the nearest non-zero valued pixel in the input. The output contains values for all pixels within the given neighborhood size, regardless of the input's mask. Note: the default distance metric returns squared distance.
| Usage | Returns | Image.fastDistanceTransform(neighborhood, units, metric) | Image |
| Argument | Type | Details | this: image | Image | The input image. |
neighborhood | Integer, default: 256 | Neighborhood size in pixels. |
units | String, default: "pixels" | The units of the neighborhood, currently only 'pixels' are supported. |
metric | String, default: "squared_euclidean" | Distance metric to use: options are `squared_euclidean`, `manhattan` or `chebyshev`. |