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) 1993-2022, David A. Clunie DBA PixelMed Publishing. All rights reserved.

BUGS