MHISTO
Section: User Commands (1)
Updated: FEBURARY 13, 1991
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NAME
mhisto - compute grey-level histogram for any file
SYNOPSIS
mhisto [-l #] [-c] [-m #] [-b # -n #] [-f -t] [-M] [-r -R] [-z] [-s #]
[-a -1 -2 #] [-S[#]] [<] input [> [-o]outhist]
DESCRIPTION
- -l #
-
log(bins) is the log2 of the number of bins. The default is 8 (bins=256).
- -c
-
causes multiple frame sequences to collapse to a single histogram,
instead of a separate histogram being generated for each input frame.
It can be used to compute a 3D image histogram.
- -m #
-
specify the maximum output value. The maximum integer input is 21TP
-b #
begin processing with the #'th frame. The default is 1.
- -n #
-
process # frames.
- -f -t
-
will eliminate the frequent top or zero value count.
- -r
-
recalculate maximum count for each frame (with this option,
-R
should be used in
mdisphist
to retrieve these counts.
- -s #
-
set display scale (maximum count) for the entire histogram.
- -S[#]
-
smooth the histogram for analysis purposes. small value gives less smoothing.
The default = 5 (range in 1 - 17).
- -z
-
count zeros. The default is to eliminate zero values.
- -12a #
-
compute histogram for any file (ascii, binary...) with file size # in byte.
mhisto
treats input as byte (-a), short (-1), or long integer (-2).
- -M
-
display some important status messages.
EXAMPLE
mhisto
bird | powertool (-a > bird.hg, | lpr)
generate gnuplot data (-a), or print the histogram table.
mhisto MRI_3D.256
-b 10 -n 5 -r -S 2 | mdisphist -R | tuner
extract frame number 10 to 15 from a 256 frame 3D MRI image, calculate
maximum pixel number for each frame, and use smoothing algorithm to generate
histogram graphs.
NOTE
see ccs.n for input image types
The output is a Histogram data.
SEE ALSO
mdisphist(1), histo_simulate(1), powertool(1)
AUTHOR
Jin Guojun, LBL - 1/8/91
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- EXAMPLE
-
- NOTE
-
- SEE ALSO
-
- AUTHOR
-
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