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README.txt
NAME
stratus.exe
SYNOPSIS
./stratus.exe --version;
./stratus.exe --help;
./stratus.exe [--alpha ALPHA] [--opt-theta THETA] --im-pfx-map IM(1)… IM(n)\
--im-sift S(1)… S(n);
DESCRIPTION
This software is an algorithm dedicated to the vibility estimation of a
satellite time series. Given a gray level time series it provides,
Boolean times series indicating the visibily (mainly the opaque clouds,
haze and shadow). To increase the estimate quality it is recommended to
sub-pixel register first the time series.
MANDATORY
--im-pfx-map IM(1)… IM(n)
The output file names.
--im-sift S(1)… S(n)
An input time series. It should represents a gray level time
series. This series will be used to compute the opaque cloud time
series.
OPTIONS
--alpha ALPHA
SIFT distance threshold. Default value is set to 0.2, takes values
in [0, +1].
--opt-theta THETA
Threshold, in pixels, used to remove the surface outliers. Default
value is set to 300. It takes values in [0, +oo].
--version
display the program version
--help
display the help
EXAMPLES
./stratus.exe --im-pfx-map im1.tif im2.tif… --im-sift test_data/* \
--opt-alpha 0.2;
General syntax.
./stratus.exe \
--im-pfx-map $(mkdir output_data && pfx=$(ls test_data/*) && \
echo ${pfx//test_data/output_data}) --im-sift test_data/* \
--opt-alpha 0.2;
Specific to the Linux bash syntax.
REFERENCES
Reference to the IPOL article :
This algorithm was designed for the publication entitled :
«Visibility detector for time series of spectrally limited satellite
imagers.»
COPYRIGHT PATENT AND LICENSE INFORMATION
THIS program is written by Tristan Dagobert. All the files
are distributed under the terms of CeCILL-C License, except
for the following contributions :
- abstract_dsf.c, abstract_dsf.h, ccproc.c, ccproc.h :
Enric Meinhardt-Llopis.
These files are distributed under the terms of the GNU Affero General
Public License.
WARNING ! Some code, useless for the current purpose, was removed
from the original code.
- lib_description.c, lib_discrete.c, lib_keypoint.c lib_matching.c,
lib_scalespace.c, lib_sift.c, lib_sift_anatomy.c, lib_util.c,
lib_description.h, lib_discrete.h, lib_keypoint.h, lib_matching.h,
lib_scalespace.h, lib_sift.h, lib_sift_anatomy.h, lib_util.h,
linalg.c, linalg.h :
Ives Rey-Otero.
These files are distributed redistribute it under the terms of
the simplified BSD License.
WARNING ! Two updates were added to the original code of the file
lib_sift.c to fix memory leaks.
- iio.c, iio.h by :
Enric Meinhardt-Llopis, Gabriele Facciolo, Carlo de Franchis,
Juan Cardelino.
These files are distributed under the terms of the GNU Affero General
Public License.
AUTHORS
Tristan Dagobert <tristan.dagobert@cmla.ens-cachan.fr>,
<tdagobert@hotmail.com>
VERSION
2020/05/05 1.0
Location of future releases and updates : http://www.ipol.im
CHANGES
In the program since it was first published in IPOL. No changes.
CONFIGURATION
Libraries required to compile and use the program.
This software requires :
- PNG, TIF, JPEG libraries
Compilation instructions
Before compiling, please check the Makefile in order to program the
right paths for external libraries.
To compile, type :
make exe [MYDEBUG=1];
This will produce the executable : stratus.exe
To test with a small series, type :
make test;
To clean, type :
make clean;
NOTES
The input and output images should be of all types supported by the iio
library.
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