[ITK] [ITK-users] Multiply two .img or .hdr images in ITK

[Bill Lorensen]

What are the errors?

On Sun, Apr 27, 2014 at 10:48 AM, Pansam Changmi <pansam5green at gmail.com> wrote:
> Thanks guys. My requirement is kind of just using ITK. It is an assignment
> actually.
> Can you guys help me out what am I doing wrong here. I have busted my head
> over this for the whole day. I am getting like 30 errors :'(
>
> The code:
>
>
> #include "itkImage.h"
> #include "itkImageFileReader.h"
> #include "itkImageFileWriter.h"
> #include "itkRescaleIntensityImageFilter.h"
> #include "itkMultiplyImageFilter.h"
>
> int main( int argc, char * argv[] )
> {
>   if( argc < 4 )
>     {
>     std::cerr << "Usage: " << argv[0];
>     std::cerr << " image1  image2 ";
>
>     std::cerr << "outputImagefile " << std::endl;
>     return EXIT_FAILURE;
>     }
>
>   typedef  unsigned char  PixelType;
>
>   const   unsigned int        Dimension = 3;
>   typedef itk::Image< PixelType, Dimension >  Image1Type;
>   typedef itk::Image< PixelType, Dimension >  Image2Type;
>
>   typedef itk::ImageFileReader< Image1Type > Image1ReaderType;
>   typedef itk::ImageFileReader< Image2Type > Image2ReaderType;
>
>
>   Image1ReaderType::Pointer Image1Reader = Image1ReaderType::New();
>   Image2ReaderType::Pointer Image2Reader = Image2ReaderType::New();
>
>   Image1Reader->SetFileName( argv[1] );
>   Image2Reader->SetFileName( argv[2] );
>
>   typedef itk::MultiplyImageFilter <Image1ReaderType, Image2ReaderType >
>       MultiplyImageFilterType;
>
>   MultiplyImageFilterType::Pointer multiplyFilter =
> MultiplyImageFilterType::New ();
>   multiplyFilter->SetInput1(Image1Reader);
>   multiplyFilter->SetInput2(Image2Reader);
>
>   typedef itk::Image< PixelType, Dimension > OutputImageType;
>   typedef itk::ImageFileWriter< OutputImageType >  WriterType;
>   WriterType::Pointer      writer =  WriterType::New();
>   writer->SetFileName( argv[3] );
>   writer->SetInput( multiplyFilter->GetOutput() );
>   writer->Update();
>
>   return EXIT_SUCCESS;
> }
>
>
>
>
> On Sun, Apr 27, 2014 at 7:00 PM, Bradley Lowekamp <blowekamp at mail.nih.gov>
> wrote:
>>
>> Hello,
>>
>> You may be interested in the SimpleITK bindings for ITK. SimpleITK
>> provides an easy to use interface on top of ITK which excels facilitation
>> quick image manipulation with ITK, and enables interactive manipulations
>> with tools such as IPython[1]
>>
>> SimpleITK for python is readily available as a binary download[2].  What
>> you are looking for can be done in SimpleITK like this:
>>
>> import SimpleITK as sitk
>> img1 = sitk.ReadImage("head.img")
>> img2 = sitk.ReadImage("BrainMask.img")
>> out = img1*img2
>> sitk.WriteImage("out.img")
>>
>> This assumes that the two images occupy the same physical space and are
>> the same pixel type. The binary operators in SimpleITK require that the
>> pixel types are the same, so a cast may be needed.
>>
>> However, if you are multiplying a mask by the grayscale you may be
>> interested in the MaskImageFilter[3]. This filter will support most
>> combinations and can be used:
>>
>> sitk.Mask(img1, img2).
>>
>> Enjoy,
>> Brad
>>
>> [1] http://simpleitk.github.io/SimpleITK-Notebooks/
>> [2]
>> http://www.itk.org/Wiki/SimpleITK/GettingStarted#Downloading_the_binaries
>> [3]
>> http://www.itk.org/SimpleITKDoxygen/html/classitk_1_1simple_1_1MaskImageFilter.html
>>
>>
>>
>>
>>
>>
>> On Apr 27, 2014, at 1:39 AM, Pansam Changmi <pansam5green at gmail.com>
>> wrote:
>>
>> > Hi,
>> >
>> > Can anyone tell me how to multiply two .img or .hdr images (for example
>> > head.img and BrainMask.img) in ITK? Do I need VTK? ITK-Snap? C3d tool?
>> >
>> > Regards,
>> > Pansam
>> > _____________________________________
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>> >
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>>
>
>
> _____________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Kitware offers ITK Training Courses, for more information visit:
> http://www.kitware.com/products/protraining.php
>
> Please keep messages on-topic and check the ITK FAQ at:
> http://www.itk.org/Wiki/ITK_FAQ
>
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