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erode
ArrayFire Functions | ArrayFire Functions by Category » Image Processing » Morphological Operations

Erosion(morphological operator) for images More...

## Functions
AFAPI array | erode (const array &in, const array &mask)
| C++ Interface for image erosion (min filter)
AFAPI af_err | af_erode (af_array *out, const af_array in, const af_array mask)
| C Interface for image erosion (min filter)

## Detailed Description

Erosion(morphological operator) for images

The erosion function is a morphological transformation on an image that requires two inputs. The first is the image to be morphed, and the second is the mask indicating neighborhood that must be white in order to preserve each pixel.

In erode, for each pixel, the mask is centered at the pixel. If each pixel of the mask matches the corresponding pixel on the image, then no change is made. If there is at least one mismatch, then pixels are changed to the background color (black).

For further reference, see: Erosion (morphology)

Sample input and output are shown below:

Input Image | Mask | Intermediate Result | Output Image

## Function Documentation

## ◆ af_erode()

AFAPI af_err af_erode | ( | af_array * | out,
|  | const af_array | in,
|  | const af_array | mask )

C Interface for image erosion (min filter)

Parameters

  [out] | out | array is the eroded image
  [in] | in | array is the input image
  [in] | mask | is the neighborhood window

Returns
  AF_SUCCESS if the eroded successfully, otherwise an appropriate error code is returned.

Note
  if `mask` is all ones, this function behaves like min filter

## ◆ erode()

AFAPI array erode | ( | const array & | in,
|  | const array & | mask )

C++ Interface for image erosion (min filter)

Parameters

  [in] | in | array is the input image
  [in] | mask | is the neighborhood window

Returns
  the eroded image

Note
  This function can be used as min filter by using a mask of all ones