[Insight-users] Save a Matlab 3D image to work with it in ITK

[Dirk Boye]

Hi Daniela,

within Matlab save the image as a raw image.
Matlab commands:
----------------
rawFilename=['test.raw'];
fid=fopen(rawFilename,'w+');
fwrite(fid,test,'uint8');
fclose(fid);


In ITK you can read in raw files the following way:
Set the pixeltype according to your US data!

typedef unsigned char                   PixelType;
typedef itk::Image<PixelType, 3>        ImageType;
typedef itk::ImageFileReader<ImageType> ReaderType;
typedef itk::RawImageIO< PixelType, 3 > RawIOType;

ReaderType::Pointer reader = ReaderType::New();
RawIOType::Pointer rawio = RawIOType::New();
rawio->SetByteOrderToBigEndian(); //Could be LittleEndian as well,
depending on your machine
rawio->SetFileDimensionality(3);
rawio->SetHeaderSize(0);
int dimension[3]={{1,1,1}}; // Set your image dimensions here
double spacing[3]={{0.5,0.5,0.5}}; // Set your spacing here
for (int i=0;i<3;++i){
   rawio->SetDimensions(i,dimension[i]);
   rawio->SetSpacing(i,spacing[i]);
}
reader->SetImageIO(rawio);
reader->SetFileName('test.raw');
reader->Update();


>
> Hi everyone,
>
> I'm trying to work in ITK with a multislice US image pre-processed in
> Matlab: I'm not able to save that in a useful format to process it with
> ITK.
>
> I know that I can use Matlab routine dicomwrite to save an image as .dcm
> (and then process it in ITK); unluckily I think that dicomwrite is good
> only for 2D image and so I don't know how to save my 3D image....
>
> Could someone help me?
>
>
>
> Thanks all
>
> Daniela
>
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