erode | R Documentation |
Erode/dilate image by a structuring element.
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)
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. |
erode_rect
: Erode image by a rectangular structuring element of specified size.
erode_square
: Erode image by a square structuring element of specified size.
dilate
: Dilate image by a structuring element.
dilate_rect
: Dilate image by a rectangular structuring element of specified size
dilate_square
: Dilate image by a square structuring element of specified size
mopening
: Morphological opening (erosion followed by dilation)
mopening_square
: Morphological opening by a square element (erosion followed by dilation)
mclosing_square
: Morphological closing by a square element (dilation followed by erosion)
mclosing
: Morphological closing (dilation followed by erosion)
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))
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