public void ComposeSigned12()
{
int bitsStored = 12;
bool isSigned = true;
double windowWidth = 16384;
double windowLevel = 4096;
double rescaleSlope = 1.0;
double rescaleIntercept = 0;
IModalityLut modalityLUT = _lutFactory.GetModalityLutLinear(
bitsStored,
isSigned,
rescaleSlope,
rescaleIntercept);
Assert.AreEqual(-2048, modalityLUT.MinInputValue);
Assert.AreEqual(2047, modalityLUT.MaxInputValue);
Assert.AreEqual(-2048, modalityLUT.MinOutputValue, _tolerance);
Assert.AreEqual(2047, modalityLUT.MaxOutputValue, _tolerance);
Assert.AreEqual(-2048, modalityLUT[-2048], _tolerance);
Assert.AreEqual(2047, modalityLUT[2047], _tolerance);
BasicVoiLutLinear voiLUT = new BasicVoiLutLinear();
voiLUT.WindowWidth = windowWidth;
voiLUT.WindowCenter = windowLevel;
LutComposer lutComposer = new LutComposer(bitsStored, isSigned);
lutComposer.ModalityLut = modalityLUT;
lutComposer.VoiLut = voiLUT;
Assert.AreEqual(-2048, voiLUT.MinInputValue, _tolerance);
Assert.AreEqual(2047, voiLUT.MaxInputValue, _tolerance);
Assert.AreEqual(-2048, voiLUT.MinOutputValue);
Assert.AreEqual(2047, voiLUT.MaxOutputValue);
Assert.AreEqual(-1536, voiLUT[-2047]);
Assert.AreEqual(-1024, voiLUT[0]);
Assert.AreEqual(-513, voiLUT[2047]);
//This test is a little different from the others, it tests the output using a grayscale color map.
var colorMap = _lutFactory.GetGrayscaleColorMap();
colorMap.MaxInputValue = lutComposer.MaxOutputValue;
colorMap.MinInputValue = lutComposer.MinOutputValue;
Assert.AreEqual(31, 0x000000ff & colorMap[lutComposer.Data[0]]);
Assert.AreEqual(63, 0x000000ff & colorMap[lutComposer.Data[2048]]);
Assert.AreEqual(95, 0x000000ff & colorMap[lutComposer.Data[4095]]);
}
public void ComposeSigned12()
{
const int bitsStored = 12;
const bool isSigned = true;
const double windowWidth = 16384;
const double windowLevel = 4096;
const double rescaleSlope = 1.0;
const double rescaleIntercept = 0;
IModalityLut modalityLut = _lutFactory.GetModalityLutLinear(
bitsStored,
isSigned,
rescaleSlope,
rescaleIntercept);
Assert.AreEqual(-2048, modalityLut.MinInputValue);
Assert.AreEqual(2047, modalityLut.MaxInputValue);
Assert.AreEqual(-2048, modalityLut.MinOutputValue, _tolerance);
Assert.AreEqual(2047, modalityLut.MaxOutputValue, _tolerance);
Assert.AreEqual(-2048, modalityLut[-2048], _tolerance);
Assert.AreEqual(2047, modalityLut[2047], _tolerance);
BasicVoiLutLinear voiLut = new BasicVoiLutLinear();
voiLut.WindowWidth = windowWidth;
voiLut.WindowCenter = windowLevel;
LutComposer lutComposer = new LutComposer(bitsStored, isSigned);
lutComposer.ModalityLut = modalityLut;
lutComposer.VoiLut = voiLut;
Assert.AreEqual(-2048, voiLut.MinInputValue, _tolerance);
Assert.AreEqual(2047, voiLut.MaxInputValue, _tolerance);
Assert.AreEqual(-2048, voiLut.MinOutputValue);
Assert.AreEqual(2047, voiLut.MaxOutputValue);
Assert.AreEqual(-1535.84380, voiLut[-2047], _tolerance);
Assert.AreEqual(-1024.18751, voiLut[0], _tolerance);
Assert.AreEqual(-512.53122, voiLut[2047], _tolerance);
//For this, we want the output range to be the same as the VOI.
var output = lutComposer.GetOutputLut((int)Math.Round(voiLut.MinOutputValue), (int)Math.Round(voiLut.MaxOutputValue));
Assert.AreEqual(-1536, output[-2047]);
Assert.AreEqual(-1024, output[0]);
Assert.AreEqual(-513, output[2047]);
Assert.AreEqual(voiLut.MinOutputValue, output.MinInputValue);
Assert.AreEqual(voiLut.MaxOutputValue, output.MaxInputValue);
Assert.AreEqual(voiLut.MinOutputValue, output.MinOutputValue);
Assert.AreEqual(voiLut.MaxOutputValue, output.MaxOutputValue);
//This test is a little different from the others, it tests the output using a grayscale color map.
var colorMap = _lutFactory.GetGrayscaleColorMap();
colorMap.MaxInputValue = output.MaxOutputValue;
colorMap.MinInputValue = output.MinOutputValue;
Assert.AreEqual(32, 0x000000ff & colorMap[output.Data[0]]);
Assert.AreEqual(64, 0x000000ff & colorMap[output.Data[2048]]);
Assert.AreEqual(96, 0x000000ff & colorMap[output.Data[4095]]);
}
