Apply imaage morphological operations

morphology(input, operation, radius, type = "binary", value = 1,
  shape = "ball", radiusIsParametric = FALSE, thickness = 1,
  lines = 3, includeCenter = FALSE)

Arguments

input

input image

operation

operation to apply

  • "close" Morpholgical closing

  • "dilate" Morpholgical dilation

  • "erode" Morpholgical erosion

  • "open" Morpholgical opening

radius

radius of structuring element

type

type of morphology

  • "binary" Binary operation on a single value

  • "grayscale" Grayscale operations

value

value to operation on (type='binary' only)

shape

shape of the structuring element ( type='binary' only )

  • "ball" spherical structuring element

  • "box" box shaped structuring element

  • "cross" cross shaped structuring element

  • "annulus" annulus shaped structuring element

  • "polygon" polygon structuring element

radiusIsParametric

used parametric radius boolean (shape='ball' and shape='annulus' only)

thickness

thickness (shape='annulus' only)

lines

number of lines in polygon (shape='polygon' only)

includeCenter

include center of annulus boolean (shape='annulus' only)

Value

antsImage is output

Examples

fi<-antsImageRead( getANTsRData("r16") , 2 ) mask<-getMask( fi ) dilatedBall = morphology( mask, operation="dilate", radius=3, type="binary", shape="ball") erodedBox = morphology( mask, operation="erode", radius=3, type="binary", shape="box") openedAnnulus = morphology( mask, operation="open", radius=5, type="binary", shape="annulus", thickness=2) out = morphology(mask, operation="open", radius=5, type = "binary", shape = "polygon") out = morphology(mask, operation="open", radius=5, type = "binary", shape = "cross") out = morphology(mask, operation="close", radius=5, type = "binary", shape = "polygon") out = morphology(mask, operation="erode", radius=5, type = "binary", shape = "polygon") out = morphology(mask, operation="dilate", radius=5, type = "binary", shape = "polygon") testthat::expect_error(morphology(mask, operation = "open", radius = 5, shape = "hey"))