[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[gnuastro-devel] [task #15245] weight-mean operator in astarithmetic
From: |
Raul Infante-Sainz |
Subject: |
[gnuastro-devel] [task #15245] weight-mean operator in astarithmetic |
Date: |
Thu, 25 Apr 2019 02:42:21 -0400 (EDT) |
User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:66.0) Gecko/20100101 Firefox/66.0 |
URL:
<https://savannah.gnu.org/task/?15245>
Summary: weight-mean operator in astarithmetic
Project: GNU Astronomy Utilities
Submitted by: infantesainz
Submitted on: Thu 25 Apr 2019 06:42:20 AM UTC
Should Start On: Thu 25 Apr 2019 12:00:00 AM UTC
Should be Finished on: Thu 25 Apr 2019 12:00:00 AM UTC
Category: Arithmetic
Priority: 5 - Normal
Item Group: New feature
Status: None
Privacy: Public
Percent Complete: 0%
Assigned to: None
Open/Closed: Open
Discussion Lock: Any
Effort: 0.00
_______________________________________________________
Details:
One of the main operations in data reduction is the stacking of images. There
are situations where some images has to be more weighted than others. For
example, in a set of images, if some of them has high noise, it would be
better to weight less that images. Another situation is when images have
different time exposures, those with high time exposure should be weighted
higher, while those with low time exposure should be less weighted.
One possible way could be to define `weight-mean' operator that takes as input
pairs of images and weights. Something like this:
<textarea>
astarithmetic im1.fits 0.5 im2.fits 0.8 im3.fits 0.1 3 weight-mean
--output=stacked.fits
</textarea>
_______________________________________________________
Reply to this item at:
<https://savannah.gnu.org/task/?15245>
_______________________________________________
Message sent via Savannah
https://savannah.gnu.org/
- [gnuastro-devel] [task #15245] weight-mean operator in astarithmetic,
Raul Infante-Sainz <=