getStructuringElement is a convenience function to create
structuring elements with defined shapes that can be used to filter images
with filter2D.
Usage
getStructuringElement(
k_shape = "rectangle",
k_height = 5,
k_width = 5,
anchor = c(-1, -1)
)Arguments
- k_shape
A string corresponding to the shape of the structuring element. Valid kernel shapes are:
"rectangle" (the default)
"cross"
"ellipse"
- k_height
The half-height in pixels of the structuring element.
- k_width
The half-width in pixels of the structuring element.
- anchor
A 2-element numeric vector defining the anchor position within the cross-shaped structuring element. The default value (−1,−1) means that the anchor is at the center. Note that only the shape of a cross-shaped kernel depends on the anchor position.
Author
Simon Garnier, garnier@njit.edu
Examples
getStructuringElement()
#> [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11]
#> [1,] 1 1 1 1 1 1 1 1 1 1 1
#> [2,] 1 1 1 1 1 1 1 1 1 1 1
#> [3,] 1 1 1 1 1 1 1 1 1 1 1
#> [4,] 1 1 1 1 1 1 1 1 1 1 1
#> [5,] 1 1 1 1 1 1 1 1 1 1 1
#> [6,] 1 1 1 1 1 1 1 1 1 1 1
#> [7,] 1 1 1 1 1 1 1 1 1 1 1
#> [8,] 1 1 1 1 1 1 1 1 1 1 1
#> [9,] 1 1 1 1 1 1 1 1 1 1 1
#> [10,] 1 1 1 1 1 1 1 1 1 1 1
#> [11,] 1 1 1 1 1 1 1 1 1 1 1