public DcmPixelData(DcmDataset dataset)
{
_transferSyntax = dataset.InternalTransferSyntax;
_lossy = dataset.GetString(DicomTags.LossyImageCompression, "00") != "00";
_lossyMethod = dataset.GetString(DicomTags.LossyImageCompressionMethod, String.Empty);
_lossyRatio = dataset.GetString(DicomTags.LossyImageCompressionRatio, String.Empty);
_frames = dataset.GetInt32(DicomTags.NumberOfFrames, 1);
_width = dataset.GetUInt16(DicomTags.Columns, 0);
_height = dataset.GetUInt16(DicomTags.Rows, 0);
_bitsStored = dataset.GetUInt16(DicomTags.BitsStored, 0);
_bitsAllocated = dataset.GetUInt16(DicomTags.BitsAllocated, 0);
_highBit = dataset.GetUInt16(DicomTags.HighBit, (ushort)(_bitsStored - 1));
_samplesPerPixel = dataset.GetUInt16(DicomTags.SamplesPerPixel, 0);
_pixelRepresentation = dataset.GetUInt16(DicomTags.PixelRepresentation, 0);
_planarConfiguration = dataset.GetUInt16(DicomTags.PlanarConfiguration, 0);
_photometricInterpretation = dataset.GetString(DicomTags.PhotometricInterpretation, String.Empty);
_rescaleSlope = dataset.GetDouble(DicomTags.RescaleSlope, 1.0);
_rescaleIntercept = dataset.GetDouble(DicomTags.RescaleIntercept, 0.0);
_pixelDataItem = dataset.GetItem(DicomTags.PixelData);
_hasPixelPadding = dataset.Contains(DicomTags.PixelPaddingValue);
if (_hasPixelPadding)
{
DcmElement elem = dataset.GetElement(DicomTags.PixelPaddingValue);
if (elem is DcmUnsignedShort && elem.GetVM() > 0)
{
_pixelPaddingValue = (elem as DcmUnsignedShort).GetValue();
}
else if (elem is DcmSignedShort && elem.GetVM() > 0)
{
_pixelPaddingValue = (elem as DcmSignedShort).GetValue();
}
else
{
_pixelPaddingValue = MinimumDataValue;
}
}
}