DCTOPGM8(1)

NAME
dctopgm8 - ACR/NEMA DICOM PS3 ... DICOM PS3 - DICOM image to PNM file

SYNOPSIS

dctopgm8 [ -v|verbose ] [ -quiet|silent ] -windowwidth width ] -windowlevel|windowcenter center ] -ignorewindow ] -voilut numberfromzero ] -ignorevoilut ] -invertedgray ] -signed|unsigned ]

DESCRIPTION

dctopgm8 reads the named dicom or acr-nema input file, converts it to an 8 bit grayscale image by windowing or application of a VOI LUT and saves it as a PGM file.

In the absence of overriding command line options, the default behavior is to apply the first VOI LUT found, else if none, the first pair of window values in the input file, else if none, the full range of the input pixel values.

The input file must be unencapsulated.

OPTIONS
The PGM 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 are:

-quiet|silent
    Suppress the normal description of image parameters.

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

-windowwidth width
    The window width to use (also supresses use of any VOI LUT).

-windowlevel|windowcenter center
    The window center to use (also supresses use of any VOI LUT).

-ignorewindow
    Ignore window center and width values in the input file, and use the full pixel value range instead (if no other command line options).

-voilut numberfromzero
    Use the selected VOI LUT from the input file (indexed from 0 not 1).

-ignorevoilut
    Ignore any VOI LUTs in the input file, and use the window values or the full pixel value range instead (if no other command line options).

-invertedgray
    Invert the grayscale, overriding the PhotometricInterpretation in the input file.

-signed|unsigned
    Override the sign specified in the PixelRepresentation in the input file.

ENVIRONMENT

EXAMPLES

% dctopgm8 file.dcm file.pgm
Read ...
    Rows = 2294
    Columns = 1914
    NumberOfFrames = 0
    PhotometricInterpretation = MONOCHROME2
    SamplesPerPixel = 1
    BitsAllocated = 16
    BitsStored = 12
    HighBit = 11
    PixelRepresentation = 0
    PlanarConfiguration = 0
    RescaleIntercept = 0
    RescaleSlope = 1
    WindowCenter = 2905
    WindowWidth = 900
    VOILUTs = 3
    PixelData Value Length = 0x85fe78
Setting window values extracted from object because present not set on command line
Using ...
    Rows = 2294
    Columns = 1914
    NumberOfFrames = 1
    PhotometricInterpretation = MONOCHROME2
    SamplesPerPixel = 1
    BitsAllocated = 16
    BitsStored = 12
    HighBit = 11
    PixelRepresentation = 0
    PlanarConfiguration = 0
    RescaleIntercept = 0
    RescaleSlope = 1
    WindowCenter =
    WindowWidth =
    VOILUTs = 0 of 3
    Rows*Columns*SamplesPerPixel*BitsAllocated/8 = 0x85fe78
Writing ...
Applying VOILUT 0

FILES

SEE ALSO
dccp(1), pnmtodc(1), rawtodc(1), dctopnm(1), dctoraw(1), dcintro(1)

AUTHOR
Copyright (c) 1993-2015, David A. Clunie DBA PixelMed Publishing. All rights reserved.

BUGS