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IMAGECROP(1) User Commands IMAGECROP(1)

NAME

ImageCrop - crop regions of an image

SYNOPSIS

astimgcrop [OPTION...] [ASCIIcatalog] ASTRdata ...

DESCRIPTION

ImageCrop is part of GNU Astronomy Utilities 0.2.33-8a3b. ImageCrop will create cutouts, thumbnails, postage stamps or crops of region(s) from input image(s) using image or celestial coordinates. If muliple crops are desired, a catalog must be provided. When in WCS mode, if the cut out covers more than one input image, all overlapping input images will be stitched in the output.

For more information, please run any of the following commands. They will respectively show you the `Invoking ImageCrop' subsection, the complete `ImageCrop' section, or the full GNU Astronomy Utilities manual. In particular the first contains a very complete explanation of each option.

info astimgcrop
info ImageCrop
info gnuastro

If you couldn't find your answer in the manual, you can get direct help from experienced Gnuastro users and developers. For more information, please run:

info help-gnuastro

ImageCrop options:

Input:
Header keyword number to stop reading WCS.
Header keyword number to start reading WCS.
Extension name or number of input data.
Output:
Remove parts of the crop box out of input image.
Side of box (in pixels) to check.
Don't delete output if it exists.
Keep crop if the central parts are not filled.
Do not remove input's dir info for output.
Output file or directory name.
Suffix (postfix) of cropped images.
Crop:
Image mode width (in pixels).
Declination of one crop box center.
Column of Right Ascension (RA) in catalog.
Column of Declination (Dec) in catalog.
Column of X (first FITS axis) value in catalog.
Column of Y (second FITS axis) in catalog.
Polygon vertices of region to crop.
Keep the polygon's outside, mask the inside.
Right ascension of one crop box center.
Image section string specifying crop range.
WCS mode width (in arc seconds).
First axis position for only one crop.
Second axis position for only one crop.
0.0 in float or double images are not blank.
Operating modes:
-?, --help
give this help list
BibTeX citation for ImageCrop.
Use image coordinates (x and y).
No log file for programs which make one.
Number of CPU threads to use.
Only read current directory configuration file.
Only run if the program version is this.
Print parameter values to be used and abort.
Only report errors, remain quiet about steps.
Set default values for this directory and abort.
give a short usage message
Set default values for this user and abort.
print program version
Use WCS coordinates (Ra and Dec).

Mandatory or optional arguments to long options are also mandatory or optional for any corresponding short options.

GNU Astronomy Utilities home page: http://www.gnu.org/software/gnuastro/

AUTHOR

Written by Mohammad Akhlaghi

REPORTING BUGS

Report bugs to bug-gnuastro@gnu.org.

COPYRIGHT

Copyright © 2015-2016, Free Software Foundation, Inc. License GPLv3+: GNU General public license version 3 or later.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

The full documentation for ImageCrop is maintained as a Texinfo manual. If the info and ImageCrop programs are properly installed at your site, the command

info ImageCrop

should give you access to the complete manual.

October 2016 GNU Astronomy Utilities 0.2.33-8a3b