public void FromImagePixelValueTags_ValidSignedInput_CorrectOutput(
ushort bitsAllocated,
ushort bitsStored,
double rescaleSlope,
double rescaleIntercept,
short smallestImagePixelValue,
short largestImagePixelValue,
string voiLutFunction,
double expectedWindowWidth,
double expectedWindowCenter)
{
var dataset = new DicomDataset(
new DicomCodeString(DicomTag.PhotometricInterpretation, "MONOCHROME1"),
new DicomUnsignedShort(DicomTag.BitsAllocated, bitsAllocated),
new DicomUnsignedShort(DicomTag.BitsStored, bitsStored),
new DicomUnsignedShort(DicomTag.PixelRepresentation, 1),
new DicomDecimalString(DicomTag.RescaleSlope, (decimal)rescaleSlope),
new DicomDecimalString(DicomTag.RescaleIntercept, (decimal)rescaleIntercept),
new DicomSignedShort(DicomTag.SmallestImagePixelValue, smallestImagePixelValue),
new DicomSignedShort(DicomTag.LargestImagePixelValue, largestImagePixelValue),
new DicomCodeString(DicomTag.VOILUTFunction, voiLutFunction));
var actual = GrayscaleRenderOptions.FromImagePixelValueTags(dataset);
Assert.Equal(expectedWindowWidth, actual.WindowWidth);
Assert.Equal(expectedWindowCenter, actual.WindowCenter);
}
public void FromImagePixelValueTags_SmallestGreaterThanLargest_Throws()
{
var dataset = new DicomDataset(
new DicomCodeString(DicomTag.PhotometricInterpretation, "MONOCHROME1"),
new DicomUnsignedShort(DicomTag.BitsAllocated, 8),
new DicomUnsignedShort(DicomTag.BitsStored, 8),
new DicomUnsignedShort(DicomTag.PixelRepresentation, 0),
new DicomDecimalString(DicomTag.RescaleSlope, (decimal)1),
new DicomDecimalString(DicomTag.RescaleIntercept, (decimal)0),
new DicomUnsignedShort(DicomTag.SmallestImagePixelValue, 180),
new DicomUnsignedShort(DicomTag.LargestImagePixelValue, 90),
new DicomCodeString(DicomTag.VOILUTFunction, "LINEAR"));
Assert.Throws <DicomImagingException>(() => GrayscaleRenderOptions.FromImagePixelValueTags(dataset));
}
private void OnKeyUp(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Right)
{
_frame++;
if (_frame >= _image.NumberOfFrames)
{
_frame--;
}
DisplayImage(_image);
return;
}
if (e.KeyCode == Keys.Left)
{
_frame--;
if (_frame < 0)
{
_frame++;
}
DisplayImage(_image);
return;
}
if (e.KeyCode == Keys.O)
{
_image.ShowOverlays = !_image.ShowOverlays;
DisplayImage(_image);
return;
}
GrayscaleRenderOptions options = null;
if (e.KeyCode == Keys.D0)
{
options = GrayscaleRenderOptions.FromDataset(_image.Dataset);
}
else if (e.KeyCode == Keys.D1)
{
options = GrayscaleRenderOptions.FromWindowLevel(_image.Dataset);
}
else if (e.KeyCode == Keys.D2)
{
options = GrayscaleRenderOptions.FromImagePixelValueTags(_image.Dataset);
}
else if (e.KeyCode == Keys.D3)
{
options = GrayscaleRenderOptions.FromMinMax(_image.Dataset);
}
else if (e.KeyCode == Keys.D4)
{
options = GrayscaleRenderOptions.FromBitRange(_image.Dataset);
}
else if (e.KeyCode == Keys.D5)
{
options = GrayscaleRenderOptions.FromHistogram(_image.Dataset, 90);
}
if (options != null)
{
_image.WindowWidth = options.WindowWidth;
_image.WindowCenter = options.WindowCenter;
DisplayImage(_image);
}
}