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improved formatting after rendering
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aedawid committed Sep 14, 2023
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19 changes: 9 additions & 10 deletions IntroPhotogrammetry/OpenDroneMap/03-ODM-georeferencing.md
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Expand Up @@ -769,7 +769,9 @@ A practical strategy is to first **employ an automated filter to narrow down to

### ***Visual check of representative images for a marker***

<div style="background: mistyrose; padding: 15px; margin-bottom: 20px;">
Ensuring that selected images are truly representative for each Ground Control Point (GCP) is a crucial step for accurate georeferencing. The `gcp_check.py` tool (from [Find-GCP repo](https://github.com/zsiki/Find-GCP)) offers a **user-friendly graphical interface to facilitate the visual check** of GCPs detected by `gcp_find.py`.

<div style="background: mistyrose; padding: 15px; margin-bottom: 30px;">
<span style="font-weight:800;">WARNING:</span>
<br><span style="font-style:italic;">
Proceeding with this section <b>requires the use of Secure SHell (SSH) paired with X11 forwarding</b>. X11 forwarding enables graphical applications run on the cluster to manifest visually on your local machine. <br><br>
Expand All @@ -783,13 +785,11 @@ If the cluster doesn't permit the use of X11 forwarding and OOD also didn't work
3. Then continue with the subsequent steps of this section. <br>
*<i>Be sure to modify the paths to align with your local filesystem during this process.</i>
</span>
</div><br>

Ensuring that selected images are truly representative for each Ground Control Point (GCP) is a crucial step for accurate georeferencing. The `gcp_check.py` tool (from [Find-GCP repo](https://github.com/zsiki/Find-GCP)) offers a **user-friendly graphical interface to facilitate the visual check** of GCPs detected by `gcp_find.py`.
</div>

If you've followed this tutorial, you should have already cloned the Find-GCP repository (see section [Find-GCP Python utility: installation](https://geospatial.101workbook.org/IntroPhotogrammetry/OpenDroneMap/03-ODM-georeferencing#find-gcp-python-utility-installation)). As a result, the `gcp_check.py` utility would be included within your cloned repo, ready for use.

Check your SOFTWARE path on the Atlas cluster (for reference, see step 7 "Create the storage directory for custom software and GitHub repos" in section [Create env for geospatial analysis](#create-env-for-geospatial-analysis)):
Check your `SOFTWARE` path on the Atlas cluster (for reference, see step 7 *"Create the storage directory for custom software and GitHub repos"* in section [Create env for geospatial analysis](#create-env-for-geospatial-analysis)):
```
ls /project/<your_project_dir>/SOFTWARE
```
Expand All @@ -803,8 +803,9 @@ FIND_GCP_PATH=/project/<your_project_dir>/SOFTWARE/Find-GCP
source activate geospatial
```

**The output file of the** `gcp_find.py` **is the input file of this program.**
* `gcp_list.txt` file *(output from the gcp_find.py)*
**INPUTS:**
* `project-X` directory with the complete imagery
* `gcp_list.txt` file *(The output file of the* `gcp_find.py` *is the input file of this program.)*

```
EPSG:32611
Expand All @@ -818,14 +819,12 @@ EPSG:32611
523364.648 4779587.932 1395.735 4216 1930 R0036039.JPG 4
```

* `project-X` directory with the complete imagery

<div style="background: mistyrose; padding: 15px; margin-bottom: 20px;">
<span style="font-weight:800;">WARNING:</span>
<br><span style="font-style:italic;">
Please be cautious: the script <b>gcp_check.py can NOT be executed within the directory containing the input images</b>. Instead, navigate one level up in the directory structure before running it.
</span>
</div><br>
</div>

Let's assume you store your `gcp_list.txt` file along with your imagery at the `IMAGES/<project-X>` path. If so, navigate one level up:
```
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