/// <summary>
/// Cloning constructor.
/// </summary>
/// <param name="source">The source object from which to clone.</param>
/// <param name="context">The cloning context object.</param>
protected FusionPresentationImage(FusionPresentationImage source, ICloningContext context) : base(source, context)
{
context.CloneFields(source, this);
_baseFrameReference = source._baseFrameReference.Clone();
_overlayFrameDataReference = source._overlayFrameDataReference.Clone();
}
public override List <IDisplaySet> CreateDisplaySets(Series series)
{
List <IDisplaySet> displaySets = new List <IDisplaySet>();
if (IsValidPETFusionSeries(series))
{
var fuseableBaseSeries = new List <Series>(FindFuseableBaseSeries(series));
if (fuseableBaseSeries.Count > 0)
{
string error;
if (!CheckPETFusionSeries(series, out error))
{
// if there is an error with the PET series, avoid trying to generate the volume entirely
// instead, generate a placeholder series for each base series
foreach (var baseSeries in fuseableBaseSeries)
{
displaySets.Add(CreateFusionErrorDisplaySet(baseSeries, series, error));
}
return(displaySets);
}
using (var fusionOverlayData = new FusionOverlayData(GetFrames(series.Sops)))
{
foreach (var baseSeries in fuseableBaseSeries)
{
if (!CheckBaseSeries(baseSeries, out error))
{
// if there is an error with a single base series, generate a placeholder series
displaySets.Add(CreateFusionErrorDisplaySet(baseSeries, series, error));
continue;
}
var descriptor = new PETFusionDisplaySetDescriptor(baseSeries.GetIdentifier(), series.GetIdentifier(), IsAttenuationCorrected(series.Sops[0]));
var displaySet = new DisplaySet(descriptor);
foreach (var baseFrame in GetFrames(baseSeries.Sops))
{
using (var fusionOverlaySlice = fusionOverlayData.CreateOverlaySlice(baseFrame))
{
var fus = new FusionPresentationImage(baseFrame, fusionOverlaySlice);
displaySet.PresentationImages.Add(fus);
}
}
displaySet.PresentationImages.Sort();
displaySets.Add(displaySet);
}
}
}
}
return(displaySets);
}
/// <summary>
/// Attempts to install an appropriate equivalent of the specified <paramref name="sourceVoiLut"/> to a fusion image. If the LUT is not linear, computes a dummy LUT.
/// </summary>
private static void InstallVoiLut(FusionPresentationImage fusionImage, IVoiLut sourceVoiLut, Frame sourceFrame, bool applyToOverlay)
{
IVoiLut newVoiLut;
if (sourceVoiLut is MinMaxPixelCalculatedLinearLut)
{
if (applyToOverlay)
{
// if the overlay source image is using a min/max calculated LUT, install a custom calculated LUT that delay-computes min/max from the fusion data
// we need to delay-compute this because the fusion image graphic is delay-generated, and thus not necessarily available until just before rendering!
var skipModalityLut = sourceFrame.ParentImageSop.Modality == @"PT" && sourceFrame.IsSubnormalRescale;
newVoiLut = new FusionOverlayMinMaxVoiLutLinear(fusionImage, !skipModalityLut);
}
else
{
// if the base source image is using a min/max calculated LUT, install a similarly min/max calculated LUT for the base of the fusion image
newVoiLut = new MinMaxPixelCalculatedLinearLut(fusionImage.ImageGraphic.PixelData);
}
}
else if (sourceVoiLut is IVoiLutLinear)
{
var voiLutLinear = (IVoiLutLinear)sourceVoiLut;
var normalizedVoiSlope = 1.0;
var normalizedVoiIntercept = 0.0;
if (applyToOverlay && sourceFrame.ParentImageSop.Modality == @"PT" && sourceFrame.IsSubnormalRescale)
{
// for subnormal PET rescale slope cases, the original VOI windows must be transformed through the same process as what MPR did to the pixel data
normalizedVoiSlope = sourceFrame.RescaleSlope / fusionImage.OverlayFrameData.OverlayRescaleSlope;
normalizedVoiIntercept = (sourceFrame.RescaleIntercept - fusionImage.OverlayFrameData.OverlayRescaleIntercept) / fusionImage.OverlayFrameData.OverlayRescaleSlope;
}
newVoiLut = new BasicVoiLutLinear(voiLutLinear.WindowWidth * normalizedVoiSlope, voiLutLinear.WindowCenter * normalizedVoiSlope + normalizedVoiIntercept);
}
else
{
// if the source image is using some non-linear LUT, just install a default pass-through LUT
newVoiLut = new IdentityVoiLinearLut();
}
if (applyToOverlay)
{
fusionImage.OverlayVoiLutManager.InstallVoiLut(newVoiLut);
}
else
{
fusionImage.BaseVoiLutManager.InstallVoiLut(newVoiLut);
}
}
public FusionOverlayMinMaxVoiLutLinear(FusionPresentationImage fusionPresentationImage, bool useModalityLut)
{
Platform.CheckForNullReference(fusionPresentationImage, "fusionPresentationImage");
_fusionPresentationImage = fusionPresentationImage;
_useModalityLut = useModalityLut;
}