Python Dataset.TransferSyntaxUID方法代碼示例

# 需要導入模塊: from dicom.dataset import Dataset [as 別名]
# 或者: from dicom.dataset.Dataset import TransferSyntaxUID [as 別名]
 def testUID(self):
     """DataElement: setting or changing UID results in UID type........."""
     ds = Dataset()
     ds.TransferSyntaxUID = "1.2.3"
     self.assert_(type(ds.TransferSyntaxUID) is UID, "Assignment to UID did not create UID class")
     ds.TransferSyntaxUID += ".4.5.6"
     self.assert_(type(ds.TransferSyntaxUID) is UID, "+= to UID did not keep as UID class")

# 需要導入模塊: from dicom.dataset import Dataset [as 別名]
# 或者: from dicom.dataset.Dataset import TransferSyntaxUID [as 別名]
def read_partial(fileobj, stop_when=None, defer_size=None, force=False):
    """Parse a DICOM file until a condition is met

    ``read_partial`` is normally not called directly. Use ``read_file``
        instead, unless you need to stop on some condition
        other than reaching pixel data.

    :arg fileobj: a file-like object. This function does not close it.
    :arg stop_when: a callable which takes tag, VR, length,
                    and returns True or False.
                    If stop_when returns True,
                        read_data_element will raise StopIteration.
                    If None (default), then the whole file is read.
    :returns: a set instance
    """
    # Read preamble -- raise an exception if missing and force=False
    preamble = read_preamble(fileobj, force)
    file_meta_dataset = Dataset()
    # Assume a transfer syntax, correct it as necessary
    is_implicit_VR = True
    is_little_endian = True
    if preamble:
        file_meta_dataset = _read_file_meta_info(fileobj)
        transfer_syntax = file_meta_dataset.TransferSyntaxUID
        if transfer_syntax == dicom.UID.ImplicitVRLittleEndian:
            pass
        elif transfer_syntax == dicom.UID.ExplicitVRLittleEndian:
            is_implicit_VR = False
        elif transfer_syntax == dicom.UID.ExplicitVRBigEndian:
            is_implicit_VR = False
            is_little_endian = False
        elif transfer_syntax == dicom.UID.DeflatedExplicitVRLittleEndian:
            # See PS3.6-2008 A.5 (p 71)
            # when written, the entire dataset following
            #     the file metadata was prepared the normal way,
            #     then "deflate" compression applied.
            #  All that is needed here is to decompress and then
            #     use as normal in a file-like object
            zipped = fileobj.read()
            # -MAX_WBITS part is from comp.lang.python answer:
            # groups.google.com/group/comp.lang.python/msg/e95b3b38a71e6799
            unzipped = zlib.decompress(zipped, -zlib.MAX_WBITS)
            fileobj = BytesIO(unzipped)  # a file-like object
            is_implicit_VR = False
        else:
            # Any other syntax should be Explicit VR Little Endian,
            #   e.g. all Encapsulated (JPEG etc) are ExplVR-LE
            #        by Standard PS 3.5-2008 A.4 (p63)
            is_implicit_VR = False
    else:  # no header -- use the is_little_endian, implicit assumptions
        file_meta_dataset.TransferSyntaxUID = dicom.UID.ImplicitVRLittleEndian

    try:
        dataset = read_dataset(fileobj, is_implicit_VR, is_little_endian,
                            stop_when=stop_when, defer_size=defer_size)
    except EOFError as e:
        pass  # error already logged in read_dataset
    return FileDataset(fileobj, dataset, preamble, file_meta_dataset,
                                is_implicit_VR, is_little_endian)

# 需要導入模塊: from dicom.dataset import Dataset [as 別名]
# 或者: from dicom.dataset.Dataset import TransferSyntaxUID [as 別名]
    def get_file_meta(self):
        """generate the dicom file meta data.
        """
        file_meta = Dataset()
        file_meta.FileMetaInformationVersion = '\x00\x01'
        file_meta.MediaStorageSOPClassUID = '1.2.840.10008.5.1.4.1.1.2' # CT Image Storage
        
        file_meta.MediaStorageSOPInstanceUID = ''  # !! Need valid UID here for real work
        file_meta.TransferSyntaxUID = '1.2.840.10008.1.2'
 
        file_meta.ImplementationClassUID = pydicom_root_UID + "1" # !!! Need valid UIDs here
    
        return  file_meta