erode: Erode/dilate image by a structuring element.

Description Usage Arguments Functions Examples

View source: R/RcppExports.R

Description

Erode/dilate image by a structuring element.

Usage

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
erode(im, mask, boundary_conditions = TRUE, real_mode = FALSE)

erode_rect(im, sx, sy, sz = 1L)

erode_square(im, size)

dilate(im, mask, boundary_conditions = TRUE, real_mode = FALSE)

dilate_rect(im, sx, sy, sz = 1L)

dilate_square(im, size)

mopening(im, mask, boundary_conditions = TRUE, real_mode = FALSE)

mopening_square(im, size)

mclosing_square(im, size)

mclosing(im, mask, boundary_conditions = TRUE, real_mode = FALSE)

Arguments

im

an image

mask

Structuring element.

boundary_conditions

Boundary conditions. If FALSE, pixels beyond image boundaries are considered to be 0, if TRUE one. Default: TRUE.

real_mode

If TRUE, perform erosion as defined on the reals. If FALSE, perform binary erosion (default FALSE).

sx

Width of the structuring element.

sy

Height of the structuring element.

sz

Depth of the structuring element.

size

size of the structuring element.

Functions

Examples

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
fname <- system.file('extdata/Leonardo_Birds.jpg',package='imager')
im <- load.image(fname) %>% grayscale
outline <- threshold(-im,"95%")
plot(outline)
mask <- imfill(5,10,val=1) #Rectangular mask
plot(erode(outline,mask))
plot(erode_rect(outline,5,10)) #Same thing
plot(erode_square(outline,5)) 
plot(dilate(outline,mask))
plot(dilate_rect(outline,5,10))
plot(dilate_square(outline,5)) 

imager documentation built on May 29, 2017, 8:46 p.m.

Search within the imager package
Search all R packages, documentation and source code