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dctopnm - Online in the Cloud

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This is the command dctopnm that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator



dctopnm - ACR/NEMA DICOM PS3 ... DICOM PS3 - DICOM image to PNM file


dctopnm [ -v|verbose ] [ -quiet|silent ]


dctopnm reads the named dicom or acr-nema input file and copies the raw image pixel data
to a PNM file after adding a PGM or PPM header.

The input file must be unencapsulated, single channel (grayscale or palette color; the
photometric interpretation is not checked for single channel), or three channel
interleaved RGB, and in the case of > 8 bit data, in the same byte order as desired in the
output, since the raw bytes are copied from input to output without any conversion. Use
dccp(1) first to change the encoding if necessary.

Only the necessary number of bytes to encode the pixel data will be written (based on
rows, columns, number of frames, samples per pixel and bits allocated); this means that
for an odd number of bytes the extra DICOM padding byte will not be copied to the raw
output. This prevents netpbm utilities freaking out with an error "reading magic number"
if the padding byte is present. If any of the necessary attributes to calculate the
correct pixel data length are missing, all encoded bytes will be written.


The PNM output goes where it is specified or standard out. The verbose output goes to
standard error.

The basic input switches are described in dcintro(1). Options specific to this program

Suppress the normal description of image parameters.

Display byte offset from file start and message start, in hexadecimal, and dump
contents while reading, once read, during replacement, and before writing.



% dcfile big.dc3
Meta: UID 1.2.840.10008.1.2.1
Meta: Description "Explicit VR Little Endian"
Meta: ByteOrder Little
Meta: VR Explicit
Meta: Encapsulated No
Data: UID 1.2.840.10008.1.2.2
Data: Description "Explicit VR Big Endian"
Data: ByteOrder Big
Data: VR Explicit
Data: Encapsulated No

% dctopnm big.dc3 big.pgm -endian big
Rows = 512
Columns = 512
NumberOfFrames = 0
PhotometricInterpretation = MONOCHROME2
SamplesPerPixel = 1
BitsAllocated = 16
BitsStored = 16
HighBit = 15
PixelRepresentation = 1
PlanarConfiguration = 0x0
Rows*Columns*SamplesPerPixel*BitsAllocated/8 = 0x80000
Writing ...

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