diff --git a/tests/test_data/gcp_List_GCPposition.jpg b/tests/test_data/gcp_List_GCPposition.jpg
new file mode 100644
index 00000000..6e9718a1
Binary files /dev/null and b/tests/test_data/gcp_List_GCPposition.jpg differ
diff --git a/tests/test_data/gcp_list.txt b/tests/test_data/gcp_list.txt
new file mode 100644
index 00000000..1abb0931
--- /dev/null
+++ b/tests/test_data/gcp_list.txt
@@ -0,0 +1,20 @@
+WGS84 UTM 32N
+274914.738,4603349.014,400,2121.02804,-405.91779,DJI_0068.JPG
+274914.738,4603349.014,400,2113.45101,-52.37843,DJI_0104.JPG
+274914.738,4603349.014,400,2251.05140,-2510.08324,1JI_0076.JPG
+274915.887,4603307.715,400,2189.08075,-1266.93925,DJI_0068.JPG
+274915.887,4603307.715,400,1249.52906,-136.41574,DJI_0104.JPG
+274915.887,4603307.715,400561.05432,-1057.69568,DJI_0083.JPG
+274915.887,4603307.715,400,2239.44947,-1593.32652,1JI_0076.JPG
+274985.284,4603319.756,400,3619.20999,-978.85879,DJI_0068.JPG
+274985.284,4603319.756,400,1506.89252,-1535.16355,DJI_0104.JPG
+274985.284,4603319.756,400,783.53534,-1793.26811,1JI_0076.JPG
+274920.710,4603258.802,400,2342.84463,-2285.96671,DJI_0068.JPG
+274920.710,4603258.802,400,305.37748,-303.36595,DJI_0104.JPG
+274920.710,4603258.802,400,1531.52745,-896.39311,DJI_0083.JPG
+274920.710,4603258.802,400,3671.08645,-2198.67114,DJI_0063.JPG
+274920.710,4603258.802,400.1007.75409,-1286.05432,DJI_0074.JPG
+274879.571,4603204.279,400,2693.25350,-1682.97313,DJI_0083.JPG
+274879.571,4603204.279,400,2513.14252,-1413.82886,DJI_0063.JPG
+274879.571,4603204.279,400,2150.56951,-2093.38493,DJI_0074.JPG
+
diff --git a/tests/test_data/gcp_list_README.txt b/tests/test_data/gcp_list_README.txt
new file mode 100644
index 00000000..8169a981
--- /dev/null
+++ b/tests/test_data/gcp_list_README.txt
@@ -0,0 +1,66 @@
+Do not exspect more acurate results with these coordinates!!
+
+
+These GCPs are reverse geotagged from an OpenDroneMap created Geotif
+with WGS84 coordinates in the EXIF tags.
+
+I also do not have a height value for the points!
+(Set to 400m for testing purposes...)
+
+-----------
+CRS:
+----
+WGS 84 / UTM zone 17N
+EPSG: 32617
+
+-----------
+GCP point values:
+----
+GCP_PointNr,X_Coordinate,Y_Coordinate
+1,274914.738,4603349.014,400
+2,274915.887,4603307.715,400
+3,274985.284,4603319.756,400
+4,274920.710,4603258.802,400
+5,274879.571,4603204.279,400
+-----------
+
+
+-----------
+Better human readable gcp_list.txt
+----
+WGS84 UTM 32N
+## x1 y1 z1 pixelx1 pixely1 imagename1
+## 0/0 of Pixel Coordinate = Upper left hand corner
+
+
+
+# GCP 1
+274914.738,4603349.014,400,2121.02804,-405.91779,DJI_0068.JPG
+274914.738,4603349.014,400,2113.45101,-52.37843,DJI_0104.JPG
+274914.738,4603349.014,400,2251.05140,-2510.08324,1JI_0076.JPG
+
+
+# GCP 2
+274915.887,4603307.715,400,2189.08075,-1266.93925,DJI_0068.JPG
+274915.887,4603307.715,400,1249.52906,-136.41574,DJI_0104.JPG
+274915.887,4603307.715,400561.05432,-1057.69568,DJI_0083.JPG
+274915.887,4603307.715,400,2239.44947,-1593.32652,1JI_0076.JPG
+
+# GCP 3
+274985.284,4603319.756,400,3619.20999,-978.85879,DJI_0068.JPG
+274985.284,4603319.756,400,1506.89252,-1535.16355,DJI_0104.JPG
+274985.284,4603319.756,400,783.53534,-1793.26811,1JI_0076.JPG
+
+
+# GCP 4
+274920.710,4603258.802,400,2342.84463,-2285.96671,DJI_0068.JPG
+274920.710,4603258.802,400,305.37748,-303.36595,DJI_0104.JPG
+274920.710,4603258.802,400,1531.52745,-896.39311,DJI_0083.JPG
+274920.710,4603258.802,400,3671.08645,-2198.67114,DJI_0063.JPG
+274920.710,4603258.802,400.1007.75409,-1286.05432,DJI_0074.JPG
+
+# GCP 5
+274879.571,4603204.279,400,2693.25350,-1682.97313,DJI_0083.JPG
+274879.571,4603204.279,400,2513.14252,-1413.82886,DJI_0063.JPG
+274879.571,4603204.279,400,2150.56951,-2093.38493,DJI_0074.JPG
+