update readme

README.md

@@ -172,6 +172,14 @@ def convert_camera_to_world(normals: np.ndarray, rotation_matrix: np.ndarray) ->
   return np.clip(camera_normals, 0.0, 1.0)
 ```
 
+### 1.2.8 Raw camera location
+
+The GPS location (lat/long/height) is in the `raw_data/raw_camera_info.tar.gz`. Each file over there is an archive over the
+original videos, so the train/val/test splits files from `raw_data/txt_files` must be used to map to proper indices. Each
+archive contains a bunch of raw data, however the key `lat_long_height` should provide the GPS location.
+
+Note: there is no GPS for the norway scene, the log seems to have been lost.
+
 </details>
 
 ## 2. Using the data