/// <summary>
/// Constructs a new region of interest, specifying an <see cref="IPresentationImage"/> as the source of the pixel data.
/// </summary>
/// <param name="presentationImage">The image containing the source pixel data.</param>
protected Roi(IPresentationImage presentationImage)
{
IImageGraphicProvider provider = presentationImage as IImageGraphicProvider;
if (provider == null)
return;
_imageRows = provider.ImageGraphic.Rows;
_imageColumns = provider.ImageGraphic.Columns;
_presentationImage = presentationImage;
_pixelData = provider.ImageGraphic.PixelData;
if (presentationImage is IModalityLutProvider)
_modalityLut = ((IModalityLutProvider) presentationImage).ModalityLut;
if (presentationImage is IImageSopProvider)
{
Frame frame = ((IImageSopProvider) presentationImage).Frame;
_normalizedPixelSpacing = frame.NormalizedPixelSpacing;
_pixelAspectRatio = frame.PixelAspectRatio;
_modality = frame.ParentImageSop.Modality;
_modalityLutUnits = frame.RescaleUnits;
_subnormalModalityLut = frame.IsSubnormalRescale;
}
else
{
_normalizedPixelSpacing = new PixelSpacing(0, 0);
_pixelAspectRatio = new PixelAspectRatio(0, 0);
_modalityLutUnits = RescaleUnits.None;
_subnormalModalityLut = false;
}
}
public PixelDataInfo(DicomAttributeCollection dataset)
{
dataset.LoadDicomFields(this);
AspectRatio = PixelAspectRatio.FromString(dataset[DicomTags.PixelAspectRatio].ToString()) ?? new PixelAspectRatio(0, 0);
PixelSpacing = PixelSpacing.FromString(dataset[DicomTags.PixelSpacing].ToString()) ?? new PixelSpacing(0, 0);
ImagerPixelSpacing = PixelSpacing.FromString(dataset[DicomTags.ImagerPixelSpacing].ToString()) ?? new PixelSpacing(0, 0);
}
protected void SerializeDisplayedArea(DisplayedAreaModuleIod displayedAreaModule, DicomPresentationImageCollection <T> images)
{
displayedAreaModule.InitializeAttributes();
List <DisplayedAreaModuleIod.DisplayedAreaSelectionSequenceItem> displayedAreas = new List <DisplayedAreaModuleIod.DisplayedAreaSelectionSequenceItem>();
foreach (T image in images)
{
DisplayedAreaModuleIod.DisplayedAreaSelectionSequenceItem displayedArea = new DisplayedAreaModuleIod.DisplayedAreaSelectionSequenceItem();
displayedArea.InitializeAttributes();
displayedArea.ReferencedImageSequence = new[] { CreateImageSopInstanceReference(image.Frame) };
ImageGraphic imageGraphic = ((IImageGraphicProvider)image).ImageGraphic;
Size imageSize = new Size(imageGraphic.Columns, imageGraphic.Rows);
// compute the visible area of the image as a rectangle oriented positively in screen space
RectangleF visibleImageArea = imageGraphic.SpatialTransform.ConvertToSource(image.ClientRectangle);
visibleImageArea = RectangleUtilities.ConvertToPositiveRectangle(visibleImageArea);
visibleImageArea = RectangleUtilities.RoundInflate(visibleImageArea);
visibleImageArea = RectangleUtilities.Intersect(visibleImageArea, new Rectangle(new Point(0, 0), imageSize));
// compute the pixel addresses of the visible area by intersecting area with actual pixel addresses available
Rectangle visiblePixels = ConvertToPixelAddressRectangle(Rectangle.Truncate(visibleImageArea));
displayedArea.DisplayedAreaTopLeftHandCorner = visiblePixels.Location;
displayedArea.DisplayedAreaBottomRightHandCorner = visiblePixels.Location + visiblePixels.Size;
ISpatialTransform spatialTransform = image.SpatialTransform;
switch (_displayAreaSerializationOption)
{
case DisplayAreaSerializationOption.SerializeAsMagnification:
displayedArea.PresentationSizeMode = DisplayedAreaModuleIod.PresentationSizeMode.Magnify;
displayedArea.PresentationPixelMagnificationRatio = spatialTransform.Scale;
break;
case DisplayAreaSerializationOption.SerializeAsTrueSize:
displayedArea.PresentationSizeMode = DisplayedAreaModuleIod.PresentationSizeMode.TrueSize;
displayedArea.PresentationPixelSpacing = image.Frame.NormalizedPixelSpacing;
break;
case DisplayAreaSerializationOption.SerializeAsDisplayedArea:
default:
displayedArea.PresentationSizeMode = DisplayedAreaModuleIod.PresentationSizeMode.ScaleToFit;
break;
}
displayedArea.PresentationPixelAspectRatio = PixelAspectRatio.FromString(image.Frame.NormalizedPixelSpacing.GetPixelAspectRatioString());
displayedAreas.Add(displayedArea);
}
displayedAreaModule.DisplayedAreaSelectionSequence = displayedAreas.ToArray();
}
public PixelAspectRatioChanger()
{
NewAspectRatio = new PixelAspectRatio(0, 0);
}
public PixelAspectRatioChanger()
{
NewAspectRatio = new PixelAspectRatio(0, 0);
}
