#=========================================================================
#
# 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.
#
#=========================================================================
require 'simpleitk'
if ARGV.length != 3 then
puts "Usage: SimpleGaussian <input> <sigma> <output>";
exit( 1 )
end
# Derive a class from SimpleITK Command class to be used to observe
# events and report progress.
## [ruby director command]
class MyCommand < Simpleitk::Command
def initialize(po)
# Explicit call to supoer class initlaizer is required to
# initialize the SWIG director class to enable overloaded methods
super()
@po = po
end
# The Command method to be executed on the event from the filter.
def execute
puts "%s Progress: %0.2f" % [@po.get_name, @po.get_progress]
end
end
## [ruby director command]
reader = Simpleitk::ImageFileReader.new
reader.set_file_name( ARGV[0] )
image = reader.execute
inputPixelType = image.get_pixel_idvalue
gaussian = Simpleitk::DiscreteGaussianImageFilter.new
gaussian.set_variance ARGV[1].to_f
# create a new MyCommand class, the references between the objects is
# automatically taked care of. The connection will automatically be
# removed when either object is deleted.
cmd = MyCommand.new gaussian
gaussian.add_command Simpleitk::SitkProgressEvent, cmd
image = gaussian.execute image
caster = Simpleitk::CastImageFilter.new
caster.set_output_pixel_type inputPixelType
image = caster.execute image
writer = Simpleitk::ImageFileWriter.new
writer.set_file_name ARGV[2]
writer.execute image
