ELASTIC
Section: User Commands (1)
Updated: JANUARY 15, 1991
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NAME
elastic - high performance image enhancement tool
SYNOPSIS
elastic [-v#] [-b] [-n] [-r] [<] inputfilename [> [-o] filename]
[-f#] [-g[#]] [-B -F] [-a[#]] [-e [-z]] [-l] [-t]
[-I] [-R[X, Y] #] [-S] [-M] [-T]
DESCRIPTION
elastic
is a histogram streching based image enhancement tool using elastic algorithm.
The ELASTIC function basically performs 3 different intensity corrections:
(1) recoverable scaling (saturated elastic-tuning, by default)
(2) S correction (-f # = -425 to +275, -325 to 0 is unsaturated elastic-tuning)
(3) C correction (supersaturated non-saturated elastic-tuning)
Also
elastic
can perform region difference interpolation and high frequencies emphasis.
The input can be one type of HIPS, FITS, GIF, ICC, RLE, PNM, SUN-Raster,
and TIFF images, and the output is a HIPS image.
OPTIONS
- -a[#]
-
adjust float input automatically. The following # yields output range factor.
The default is 196.
- -b
-
use elastic-tuning to emphasize background. The default is to emphasize
the foreground.
- -f #
-
scale factor, real number in percentage. The default is 0%.
(often used range is from -575 to +750.)
(The entire range can be from -10550 to +12500.)
- -g[#]
-
the base value (threhsold) at bottom, no output value will be less than it. If
-g
specified but no further value given, the default base = 10.
- -l
-
linear scaling. Usually work with RDI (region difference interpolation).
- -n
-
negative elastic operation.
- -r
-
relaxed elasticity operation, for Fast Version only (see version by using -M).
-t[#]
clip top # (default=1) value to 91%(default) or given value # (in -v).
- -v #
-
set maximum value for output.
- -B
-
force byte formated output. The default is to output images same as input.
- -F
-
force floating point format output.
- -E
-
modify Edges on right and bottom when interpolating.
- -I
-
Interpolation in main peak area for BYTE formated output, [2 x 2] regions.
- -R
-
interpolation Regions for both X and Y. For BYTE format images only.
- -RX #
-
X interpolation regions.
-RY #
Y interpolation regions.
- -S
-
treat all slices as a single 3D image.
- -M
-
Display messages.
- -T
-
generate Table for plot
- -o
-
this option is used for machines such as the PC which require binary output
file modes to be set on open. No space allowed between the switch and the
filename.
- -e
-
emphasize the high frequencies.
- -z
-
option counts zero valued pixels in high frequency emphasis (-e).
NOTE
Input can be any format, and floating point input can only result in either
byte or floating point output.
EXAMPLE
elastic
-f 250 -b -R 8 bird.h | xhips
SEE ALSO
meanpeak(1), mean_scale(1)
AUTHOR
Jin Guojun - 1/3/90
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- OPTIONS
-
- NOTE
-
- EXAMPLE
-
- SEE ALSO
-
- AUTHOR
-
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