public FusionOverlayCompositeGraphic(FusionOverlayFrameData overlayFrameData)
{
_overlayFrameDataReference = overlayFrameData.CreateTransientReference();
_overlayFrameDataReference.FusionOverlayFrameData.Unloaded += HandleOverlayFrameDataUnloaded;
_voiLutManagerProxy = new VoiLutManagerProxy();
_colorMapManagerProxy = new ColorMapManagerProxy();
// install an initial VOI window if one is available in the overlay headers
var initialVoiWindow = CollectionUtils.FirstElement(overlayFrameData.OverlayData.VoiWindows);
if (initialVoiWindow != null)
{
VoiLutManager.InstallVoiLut(new BasicVoiLutLinear(initialVoiWindow.Width, initialVoiWindow.Center));
}
}
public FusionOverlayImageGraphic(FusionOverlayFrameData fusionOverlayFrameData)
: base(fusionOverlayFrameData._overlayFrameParams.Rows, fusionOverlayFrameData._overlayFrameParams.Columns,
fusionOverlayFrameData._overlayFrameParams.BitsAllocated, fusionOverlayFrameData._overlayFrameParams.BitsStored, fusionOverlayFrameData._overlayFrameParams.HighBit,
fusionOverlayFrameData._overlayFrameParams.IsSigned, fusionOverlayFrameData._overlayFrameParams.IsInverted,
fusionOverlayFrameData._overlayFrameParams.RescaleSlope, fusionOverlayFrameData._overlayFrameParams.RescaleIntercept,
fusionOverlayFrameData.GetPixelData)
{
// this image graphic needs to keep a transient reference on the slice, otherwise it could get disposed before we do!
_overlayFrameData = fusionOverlayFrameData.CreateTransientReference();
if (fusionOverlayFrameData.OverlayData.Modality == @"PT" && RescaleSlope < 1.0 / (1 << BitsStored))
{
// some PET images have such a small slope that all stored pixel values map to one single value post-modality LUT
// we detect this condition here and apply the inverse of the modality LUT as a normalization function for VOI purposes
// http://groups.google.com/group/comp.protocols.dicom/browse_thread/thread/8930b159cb2a8e73?pli=1
NormalizationLut = new InvertedLinearLut(RescaleSlope, RescaleIntercept);
}
}
public IFusionOverlayFrameDataReference Clone()
{
return(_frameData.CreateTransientReference());
}
public FusionPresentationImage(Frame baseFrame, FusionOverlayFrameData overlayData)
: this(baseFrame.CreateTransientReference(), overlayData.CreateTransientReference())
{
}