erode

Erosion(morphological operator) for images. More...

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

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