ANTsR (version 0.3.3)

morphology: Morphological image operations

Description

Apply imaage morphological operations

Usage

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)