imgbkgrm - tpcclib 0.7.7 © 2021 by Turku PET Centre

Threshold dynamic PET image file in ECAT, NIfTI, or Analyze format.
AIC is used to determine whether the TAC of a single pixel consists of
noise only, or if it resembles the scaled mean of all image pixels.
If no significant signal is found, that pixel is set to zero.
After this operation, PET data can usually be compressed to about
one-third of the original file size.
 
If file name for mask file is given, then original image file is not
modified but a mask file is written, with 0 marking the noise pixels and
1 marking the pixels with signal. Otherwise the original image file is
modified.
 
Usage: imgbkgrm [Options] imgfile [maskfile]
 
Options:
 -keepnegat
     By default, all pixels with AUC<0 are set to zero; with this option
     those are tested as usual.
 -bkg=<zero|border>
     Use zero values as background (zero, default), or mean of pixels at
     image x,y-border (border).
 -bordertac=<filename>
     Save TAC of average pixel values at image x,y-borders.
 -h, --help
     Display usage information on standard output and exit.
 -v, --version
     Display version and compile information on standard output and exit.
 -d[n], --debug[=n], --verbose[=n]
     Set the level (n) of debugging messages and listings.
 -q, --quiet
     Suppress displaying normal results on standard output.
 -s, --silent
     Suppress displaying anything except errors.
 
Example:
     imgbkgrm b123dy1.v
 
See also: imgmask, imgthrs, imginteg, imgposv, imgslim
 
Keywords: image, threshold, mask, noise