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ficombine - combining (most frequently, averaging) a set of images

FICOMBINE(1) User Commands FICOMBINE(1)

NAME

ficombine - combining (most frequently, averaging) a set of images

SYNOPSIS

ficombine [ options] <input images> [-o|--output <output>]

DESCRIPTION

The purpose of this program is to combine the input images (with the same sizes) to a single image. This combination refers to a kind of "averaging" for the images, however, other modes are also available.

OPTIONS

General options:

-h, --help
Gives general summary about the command line options.
--long-help, --help-long
Gives a detailed list of command line options.
--wiki-help, --help-wiki, --mediawiki-help, --help-mediawiki
Gives a detailed list of command line options in Mediawiki format.
--version, --version-short, --short-version
Gives some version information about the program.
-o, --output <fits>
The name of the output file (omitting or specifing '-' yields the output to be written to stdout).
--data <spec>
Output pixel data format specification.
-b, --bitpix <bitpix>
Standard FITS output bitpix value.
-M, --input-mask <fits>
Input mask file to co-add to output image.

Generic combination specification:

-m, --mode <mode>
Use the specified mode to combine images.
-n, --ignore-negative
Ignore (i.e. mask) pixels with negative values.
--logical-or
Use logical "or" combination between masks.
--logical-and
Use logical "and" combination between masks.

Combination modes (a comma-separated list of these should follow -m|--mode):

average, mean
The mean value of the pixels.
median
The median value of the pixels.
min, minimum
The minimum value of the pixels.
max, maximum
The maximum value of the pixels.
rejmed, rejection
Median value after rejecting outliers.
rejavg
Mean value after rejecting outliers.
iterations=<n>
Number of iterations to reject outliers.
lower=<l>, upper=<u>, sigma=<s>
Outlier limit (lower, upper, both) in stddev.
sum
Sum of the pixel values.
squaresum
Sum for the squarers of the pixel values.
scatter, stddev
Pixel scatter (standard deviation).
or
Use logical "or" combination between masks.
and
Use logical "and" combination between masks.
ignorenegative
Ignore (i.e. mask) pixels with negative values.
ignorezero
Ignore (i.e. mask) pixels with a zero value.
ignorenegative
Ignore (i.e. mask) pixels with positive values.

REPORTING BUGS

Report bugs to <apal@szofi.net>, see also http://fitsh.net/. Copyright © 1996, 2002, 2004-2008, 2010-2015; Pal, Andras <apal@szofi.net>
September 2016 ficombine 0.9 (0.9.2@2016.09.23)