vtkImageDataPtr Image::getGrayScaleVtkImageData()
{
if (mBaseGrayScaleImageData)
{
return mBaseGrayScaleImageData;
}
mBaseGrayScaleImageData = convertImageDataToGrayScale(this->getBaseVtkImageData());
return mBaseGrayScaleImageData;
}
/**Convert input to grayscale, and return a COPY of that volume ( in order to break the pipeline for memory purposes)
* ALSO: remove data in image outside extent - required by reconstruction.
* Convert to 8 bit as current US reconstruction algorithms only handles 8 bit
*/
vtkImageDataPtr USFrameData::to8bitGrayscaleAndEffectuateCropping(vtkImageDataPtr input) const
{
vtkImageDataPtr grayScaleData;
if (input->GetNumberOfScalarComponents() == 1) // already gray
{
// crop (slow)
grayScaleData = input;
// outData->Crop();
}
else
{
// convert and crop as side effect (optimization)
grayScaleData = convertImageDataToGrayScale(input);
}
vtkImageDataPtr outData = this->convertTo8bit(grayScaleData);
vtkImageDataPtr copy = vtkImageDataPtr::New();
copy->DeepCopy(outData);
return copy;
}
