correct time-sift formatting

source/map-accuracy.rst

@@ -270,10 +270,9 @@ When previously mapped sites need revisited, OpenDroneMap can align multiple ver
 Animated gif comparing two separately processed, but aligned digital surface models.
 
 Plugin Time-SIFT
-================
+----------------
 
-This script does Time-SIFT processing with ODM. Time-SIFT is a method
+The script at contrib/time-sift in the ODM repository does Time-SIFT processing with ODM. Time-SIFT is a method for multi-temporal analysis without the need to co-registrate the data.
-for multi-temporal analysis without the need to co-registrate the data.
 
    D. Feurer, F. Vinatier, Joining multi-epoch archival aerial images in
    a single SfM block allows 3-D change detection with almost
@@ -283,7 +282,7 @@ for multi-temporal analysis without the need to co-registrate the data.
    (https://doi.org/10.1016/j.isprsjprs.2018.10.016)
 
 Requirements
-------------
+============
 
 -  ODM ! :-)
 -  subprocess
@@ -296,13 +295,12 @@ Requirements
 -  textwrap
 
 Usage
------
+=====
 
 Provided example
-~~~~~~~~~~~~~~~~
+================
 
-Download or clone `this
+Download or clone `this repo <https://forge.inrae.fr/Denis.Feurer/timesift-odm-data-example.git>`__
-repo <https://forge.inrae.fr/Denis.Feurer/timesift-odm-data-example.git>`__
 to get example data.
 
 Then execute
@@ -311,34 +309,19 @@ Then execute
 
    python Timesift_odm.py datasets --end-with odm_filterpoints
 
-It should make the Time-SIFT processing on the downloaded example data,
+It should make the Time-SIFT processing on the downloaded example data, stopping after the filtered dense clouds step.
-stopping after the filtered dense clouds step.
 
-In the destination dir, you should obtain new directories, ``0_before``
+In the destination dir, you should obtain new directories, ``0_before`` and ``1_after`` at the same level as the ``time-sift-block`` directory. These new directories contain all the results natively co-registered.
-and ``1_after`` at the same level as the ``time-sift-block`` directory.
-These new directories contain all the results natively co-registered.
 
-You can then use `CloudCompare <https://cloudcompare.org/>`__ to compute
+You can then use `CloudCompare <https://cloudcompare.org/>`__ to compute distance between the ``datasets/0_before/odm_filterpoints/point_cloud.ply`` and the ``datasets/1_after/odm_filterpoints point_cloud.ply`` and obtain this image showing the difference between the two 3D surfaces. Here, two soil samples were excavated as can be seen on the image below. |image1|
-distance between the
-``datasets/0_before/odm_filterpoints/point_cloud.ply`` and the
-``datasets/1_after/odm_filterpoints/point_cloud.ply`` and obtain this
-image showing the difference between the two 3D surfaces. Here, two soil
-samples were excavated as can be seen on the image below. |image1|
 
 Your own data
 ~~~~~~~~~~~~~
 
-In your dataset directory (usually ``datasets``, but you can have chosen
+In your dataset directory (usually ``datasets``, but you can have chosen another name) you have to prepare a Time-SIFT project directory (default name : ``time-sift-block``, *can be tuned via a parameter*) that contains : \* ``images/`` : a subdirectory with all images of all epochs. This directory name is fixed as it is the one expected by ODM \*
-another name) you have to prepare a Time-SIFT project directory (default
+``images_epochs.txt`` : a file that has the same format as the file used for the split and merge ODM function. This file name *can be tuned via a parameter*.
-name : ``time-sift-block``, *can be tuned via a parameter*) that
-contains : \* ``images/`` : a subdirectory with all images of all
-epochs. This directory name is fixed as it is the one expected by ODM \*
-``images_epochs.txt`` : a file that has the same format as the file used
-for the split and merge ODM function. This file name *can be tuned via a
-parameter*.
 
-The ``images_epochs.txt`` file has two columns, the first column
+The ``images_epochs.txt`` file has two columns, the first column contains image names and the second contains the epoch name as follows
-contains image names and the second contains the epoch name as follows
 
 ::
 
@@ -358,10 +341,7 @@ Your directory, before running the script, should look like this :
        ├── images/
        └── images_epochs.txt
 
-At the end of the script you obtain a directory by epoch (at the same
+At the end of the script you obtain a directory by epoch (at the same level as the Time-SIFT project directory). Each directory is processed with images of each epoch and all results are natively co-registered due to the initial sfm step done with all images.
-level as the Time-SIFT project directory). Each directory is processed
-with images of each epoch and all results are natively co-registered due
-to the initial sfm step done with all images.
 
 ::