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[gnuastro-devel] [bug #50072] ImageWarp 'align' does not align previousl
From: |
Mohammad Akhlaghi |
Subject: |
[gnuastro-devel] [bug #50072] ImageWarp 'align' does not align previously warped (rotated) images |
Date: |
Tue, 17 Jan 2017 22:48:49 +0000 (UTC) |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0 |
URL:
<http://savannah.gnu.org/bugs/?50072>
Summary: ImageWarp 'align' does not align previously warped
(rotated) images
Project: GNU Astronomy Utilities
Submitted by: leeskelvin
Submitted on: Wed 18 Jan 2017 07:48:48 AM JST
Category: None
Priority: 5 - Normal
Severity: 3 - Normal
Item Group: None
Status: None
Privacy: Public
Assigned to: None
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Operating System: None
_______________________________________________________
Details:
A FITS image which has been previously rotated via ImageWarp does not align
back to N/E = Y/-X as expected.
The three files attached to this report help illustrate this issue. The input
file 'input.fits' is a standard FITS image already aligned to N on the
positive Y axis and E on the negative X axis. I initially rotate the image 45
degrees using the command:
astimgwarp --rotate=45 input.fits
This produces the output file 'input_warped.fits', attached to this report. An
attempt is then made to re-align the image back to its original alignment
using the command:
astimgwarp --align input_warped.fits
This produces the output file 'input_warped_warped.fits', also attached to
this report. As can be seen, this output has not been re-aligned back to N/E =
Y/-X. I would expect this command to re-align the image, but no operation has
been performed.
Regards,
Lee Kelvin
_______________________________________________________
Reply to this item at:
<http://savannah.gnu.org/bugs/?50072>
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- [gnuastro-devel] [bug #50072] ImageWarp 'align' does not align previously warped (rotated) images,
Mohammad Akhlaghi <=