histogramWarpImageIntensities.Rd
Apply B-spline 1-D maps to an input image for intensity warping.
input image.
parametric points at which the intensity transform displacements are specified between [0, 1]. Alternatively, a single number can be given and the sequence is linearly spaced in [0, 1].
displacements to define intensity warping. Length
must be equal to the breakPoints
. Alternatively, if NULL
random displacements are chosen (random normal: mean = 0, sd = sdDisplacements
).
specify non-zero intensity change at the ends of the histogram.
characterize the randomness of the intensity displacement.
Defines the sampling resolution of the B-spline warping.
warped intensity image
library( ANTsR )
image <- antsImageRead( getANTsRData( "r16" ) )
transformedImage <- histogramWarpImageIntensities( image, transformDomainSize = 10 )
rm(image); gc()
#> used (Mb) gc trigger (Mb) limit (Mb) max used (Mb)
#> Ncells 3544541 189.3 6681702 356.9 NA 5085271 271.6
#> Vcells 6231230 47.6 16551593 126.3 102400 16549231 126.3
rm(transformedImage); gc()
#> used (Mb) gc trigger (Mb) limit (Mb) max used (Mb)
#> Ncells 3544227 189.3 6681702 356.9 NA 5085271 271.6
#> Vcells 6230743 47.6 16551593 126.3 102400 16549231 126.3