[Paraview-developers] Reading NIFTI RGB(A) and unsigned int types

[Utkarsh Ayachit]

Thanks Philip.

Joe, do these changes look okay to you? If so, I can merge the patch
into ParaView.

Utkarsh

On Tue, Feb 14, 2012 at 11:24 AM, Philip A Cook
<cookpa at mail.med.upenn.edu> wrote:
> Hi,
>
> With a few simple changes to Plugins/AnalyzeNIfTIReaderWriter/vtkNIfTIReader.cxx, I was able to make Paraview read NIFTI RGB and RGBA images, and also NIFTI unsigned short and int data types.
>
> I tried to register for git access a week or two ago, but I haven't heard back. I've tested the patch on 3.12 and 3.14 RC2 (commit 1635f2e9eb4edabaa61a97f59d8f2febf20b5f1c). RGBA was a bit strange on 3.12 (zero alpha would be opaque sometimes) but it seems to work OK now.
>
>
> Phil
>
> diff --git a/Plugins/AnalyzeNIfTIReaderWriter/vtkNIfTIReader.cxx b/Plugins/AnalyzeNIfTIReaderWriter/vtkNIfTIReader.cxx
> index def6645..21fc3b3 100644
> --- a/Plugins/AnalyzeNIfTIReaderWriter/vtkNIfTIReader.cxx
> +++ b/Plugins/AnalyzeNIfTIReaderWriter/vtkNIfTIReader.cxx
> @@ -258,23 +258,37 @@ void vtkNIfTIReader::ExecuteInformation()
>     this->SetDataScalarTypeToShort();
>     dataTypeSize = 2;
>       break;
> +    case DT_UINT16:
> +    this->SetDataScalarTypeToUnsignedShort();
> +    dataTypeSize = 2;
> +      break;
>     case DT_SIGNED_INT:
>     this->SetDataScalarTypeToInt();
>     dataTypeSize = 4;
>       break;
> +    case DT_UINT32:
> +    this->SetDataScalarTypeToUnsignedInt();
> +    dataTypeSize = 4;
> +      break;
>     case DT_FLOAT:
>     this->SetDataScalarTypeToFloat();
>     dataTypeSize = 4;
>       break;
>     case DT_DOUBLE:
> -     this->SetDataScalarTypeToDouble();
> +    this->SetDataScalarTypeToDouble();
>     dataTypeSize = 8;
>       break;
>     case DT_RGB:
> -      // DEBUG -- Assuming this is a triple, not quad
> -      //image.setDataType( uiig::DATA_RGBQUAD );
> +    this->SetDataScalarTypeToUnsignedChar();
> +    numComponents = 3;
> +    dataTypeSize=3;
>       break;
> -    default:
> +    case DT_RGBA32:
> +    this->SetDataScalarTypeToUnsignedChar();
> +    numComponents = 4;
> +    dataTypeSize=4;
> +      break;
> +    default: // Error gets thrown by ExecuteData if type is not set
>       break;
>     }
>   //
>
> _______________________________________________
> Paraview-developers mailing list
> Paraview-developers at paraview.org
> http://public.kitware.com/mailman/listinfo/paraview-developers