[vtkusers] (Fwd) Fw: Question of reading CT and MRI data with vtkImageRea

[Lisa Sobierajski Avila]

Hello,

It looks like you should have

reader->SetDataScalarTypeToShort();

An integer is four bytes in VTK, a short is 2.

Lisa




At 12:10 PM 10/4/2001, Jianlong Zhou wrote:
>----- Original Message -----=20
>From: zhangzhijun=20
>To: vtkusers at public.kitware.com=20
>Sent: Thursday, October 04, 2001 11:44 PM
>Subject: Question of reading CT and MRI data with vtkImageReader!
>
>
>
>I have a CT data set file. It is a binary file . it has a header file =
>where the parameters are setted there.=20
>and in the binary file there is only raw data which is stored one voxel =
>by one voxel.and every voxel is=20
>represented by a two-byte two's complement integers. I tried to read =
>this file but there is=20
>always some error prompt like this:
>
>Debug: In C:\vtk\vtk32\vtksrc\imaging\vtkImageReader.cxx, line 570
>vtkImageReader (0x007F5EE0): Initialize: opening file =
>D:/regdata/ct/head.bin
>
>Generic Warning: In C:\vtk\vtk32\vtksrc\imaging\vtkImageReader.cxx, line =
>762
>File operation failed. row =3D 0, Read =3D 2048, Skip0 =3D -4096, Skip1 =
>=3D 2097152, FilePos =3D 15726592
>
>The code I used like this:
>     vtkImageReader *reader=3DvtkImageReader::New();
>  reader->DebugOn();
>  reader->SetFileName("D:/regdata/patient_001/ct/image.bin");
>  reader->SetFileDimensionality(3);
>  =
>reader->SetDataExtent(0,511,0,511,1,28);//(0,255,0,255,1,26);//(0,255,0,2=
>55,1,26);//
>  reader->SetDataOrigin(0,0,0);
>  reader->SetDataScalarTypeToInt();
>  reader->SetDataMask(0x7fff);
>  reader->SetDataSpacing(0.653595,0.653595,4);
>  reader->SetDataByteOrderToBigEndian(); =20
>   reader->SetHeaderSize(0);
>
>can you give me some hints about this?
>Thank you very much.
>
>regards,
>zj zhang
>
>
>------- End of forwarded message -------
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