**Block Category:** Operations

Input Image
Format

**Input Image Requirements:** Binary image with edges
that are 0 value and non-edges that are non-zero value

**Description:** The Distance Transform block sets every
output pixel to a value proportional to the distance to the nearest 0 pixel in
the input image. That is, the longer the distance to the nearest 0 pixel, the
brighter the intensity of the pixel.

The Distance Transform block uses a 3 x 3 masking array.

#### Distance
Type

*DIST_C:* Calculates the distance on a
four-connected grid (horizontal and vertical).

*DIST_L1:* Calculates the distance on an
eight-connected grid (horizontal, vertical, and diagonal).

*DIST_L2:* Calculates the exact Euclidean
distances.

#### Example

In this example, DIST_L1 is applied to the input image.