protected void CreatePixelDataItem()
{
_frames = 0;
if (IsEncapsulated)
{
_pixelDataItem = new DcmFragmentSequence(DicomTags.PixelData, DicomVR.OB);
}
else
{
if (!TransferSyntax.IsExplicitVR || (_bitsAllocated > 8 && _bitsAllocated <= 16))
{
_pixelDataItem = new DcmOtherWord(DicomTags.PixelData);
}
else
{
_pixelDataItem = new DcmOtherByte(DicomTags.PixelData);
}
}
}
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;
}
}
}
public void AddItem(DcmItem item)
{
_items.Remove(item.Tag);
_items.Add(item.Tag, item);
item.Endian = InternalTransferSyntax.Endian;
}
public DicomNode(Image image, DcmItem elem)
: base()
{
_image = image;
_elem = elem;
}
private void InsertDatasetItem(DcmItem item, DicomReadOptions options)
{
if (_sds.Count > 0 && _sds.Count == _sqs.Count) {
DcmDataset ds = _sds.Peek();
if (_tag.Element == 0x0000) {
if (Flags.IsSet(options, DicomReadOptions.KeepGroupLengths))
ds.AddItem(item);
}
else
ds.AddItem(item);
if (ds.StreamLength != UndefinedLength) {
long end = ds.StreamPosition + ds.StreamLength;
if ((_stream.Position - _offset) >= end)
_sds.Pop();
}
}
else {
if (_tag.Element == 0x0000) {
if (Flags.IsSet(options, DicomReadOptions.KeepGroupLengths))
_dataset.AddItem(item);
}
else
_dataset.AddItem(item);
}
if (_tag == DicomTags.SpecificCharacterSet && item is DcmCodeString) {
DcmCodeString cs = (DcmCodeString)item;
if (cs.Length > 0) {
string[] values = cs.GetValues();
for (int i = 0; i < values.Length; i++) {
if (String.IsNullOrEmpty(values[i]))
continue;
_encoding = DcmEncoding.GetEncodingForSpecificCharacterSet(values[i]);
break;
}
}
}
}
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)
_pixelPaddingValue = (elem as DcmUnsignedShort).GetValue();
else if (elem is DcmSignedShort) {
_pixelPaddingValue = (elem as DcmSignedShort).GetValue();
} else
_pixelPaddingValue = MinimumDataValue;
}
}
protected void CreatePixelDataItem() {
_frames = 0;
if (IsEncapsulated) {
_pixelDataItem = new DcmFragmentSequence(DicomTags.PixelData, DicomVR.OB);
}
else {
if (!TransferSyntax.IsExplicitVR || (_bitsAllocated > 8 && _bitsAllocated <= 16))
_pixelDataItem = new DcmOtherWord(DicomTags.PixelData);
else
_pixelDataItem = new DcmOtherByte(DicomTags.PixelData);
}
}
