Morphological filter
#include "dip_morphology.h"
dip_Error dip_AreaOpening ( grey, mask, out, filtersize, connectivity, closing )
integer, float
The image grey will be filtered to remove local maxima (closing is DIP_FALSE) or local minima (closing is DIP_TRUE) with an area smaller than filtersize (in pixels).
Theoretically, the area opening can be written as the supremum of all the openings with each of the possible compact structuring elements of filtersize pixels. The connectivity parameter indicates which shapes are considered compact (i.e. all pixels are connected). See The connectivity parameter for more information.
| Data type | Name | Description |
| dip_Image | grey | Grey-value input image |
| dip_Image | mask | Mask image for ROI processing |
| dip_Image | out | Output image |
| dip_int | filtersize | Size of structuring element |
| dip_int | connectivity | Connectivity |
| dip_Boolean | closing | DIP_FALSE for area opening, DIP_TRUE for area closing |
L. Vincent, Grayscale area openings and closings, their efficient implementation and applications, Mathematical Morphology and Its Applications to Signal Processing, pages 22-27, 1993.
Opening, Closing, PathOpening, DirectedPathOpening, MorphologicalReconstruction