#=========================================================================
#
# Copyright NumFOCUS
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0.txt
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
#=========================================================================
# Run with:
#
# Rscript --vanilla SimpleGaussian.R input sigma output
#
library(SimpleITK)
args <- commandArgs( TRUE )
myreader <- ImageFileReader()
myreader$SetFileName(args[[1]] )
myimage <- myreader$Execute()
pixeltype <- myimage$GetPixelID()
myfilter <- SmoothingRecursiveGaussianImageFilter()
myfilter$SetSigma(as.numeric(args[2]) )
smoothedimage <- myfilter$Execute(myimage )
mycaster <- CastImageFilter()
mycaster$SetOutputPixelType(pixeltype )
castedimage <- mycaster$Execute(smoothedimage )
mywriter <- ImageFileWriter()
mywriter$SetFileName(args[[3]] )
mywriter$Execute(castedimage )
