GaussianSmooth

VTKExamples/Cxx/ImageProcessing/GaussianSmooth

Code

GaussianSmooth.cxx

# Show the constant kernel.  Smooth an impulse function.

vtkImageReader reader
reader ReleaseDataFlagOff
reader SetDataExtent 0 255 0 255 1 1
reader SetFilePrefix "$VTK_DATA/heart"
reader SetDataByteOrderToBigEndian

vtkImageCast cast
cast SetInput [reader GetOutput]
cast SetOutputScalarTypeToFloat

vtkImageGaussianSmooth smooth
smooth SetDimensionality 2
smooth SetInput [cast GetOutput]
smooth SetStandardDeviations 4.0 4.0
smooth SetRadiusFactors 2.0 2.0

vtkImageCanvasSource2D imageCanvas
imageCanvas SetScalarType $VTK_FLOAT
imageCanvas SetExtent -10 10 -10 10 0 0

# background zero
imageCanvas SetDrawColor 0
imageCanvas FillBox -10 10 -10 10
# impulse
imageCanvas SetDrawColor 8000
imageCanvas DrawPoint 0 0

vtkImageGaussianSmooth smooth2
smooth2 SetDimensionality 2
smooth2 SetInput [imageCanvas GetOutput]
smooth2 SetStandardDeviations 4.0 4.0
smooth2 SetRadiusFactors 3.0 3.0

vtkImageMagnify magnify
magnify InterpolateOff
magnify SetMagnificationFactors 5 5 1
magnify SetInput [smooth2 GetOutput]

vtkImageViewer2 viewer2
viewer2 SetInput [magnify GetOutput]
viewer2 SetColorWindow 99
viewer2 SetColorLevel 32


vtkImageViewer2 viewer1
viewer1 SetInput [cast GetOutput]
viewer1 SetZSlice 0
viewer1 SetColorWindow 400
viewer1 SetColorLevel 200

vtkImageViewer2 viewer
viewer SetInput [smooth GetOutput]
viewer SetZSlice 0
viewer SetColorWindow 400
viewer SetColorLevel 200

CMakeLists.txt

cmake_minimum_required(VERSION 2.8)

PROJECT(GaussianSmooth)

find_package(VTK REQUIRED)
include(${VTK_USE_FILE})

add_executable(GaussianSmooth MACOSX_BUNDLE GaussianSmooth.cxx )

target_link_libraries(GaussianSmooth ${VTK_LIBRARIES})

Download and Build GaussianSmooth

Click here to download GaussianSmooth and its CMakeLists.txt file. Once the tarball GaussianSmooth.tar has been downloaded and extracted,

cd GaussianSmooth/build

If VTK is installed:

cmake ..

If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:

cmake -DVTK_DIR:PATH=/home/me/vtk_build ..

Build the project:

make

and run it:

./GaussianSmooth

WINDOWS USERS

Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.