morphology: Morphological image operations

Description Usage Arguments Value Author(s) Examples

View source: R/morphology.R

Description

Apply imaage morphological operations

Usage

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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

Author(s)

Avants BB

Examples

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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"))

muschellij2/atropos documentation built on Oct. 11, 2018, 12:24 a.m.