scanning photos for GPS datat

photomap/pmap.py

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+
+import os
+import folium
+from pathlib import Path
+from PIL import Image, ExifTags
+
+# Define function to extract latitude and longitude from photo
+def get_coordinates(photo_path):
+    """Extracting EXIF data from jpg files requires an external package because teh EXIF standard
+    is interpreted differently by the many different implementations of the JPG file format
+    """
+    try:
+        # Read EXIF data from photo
+        img = Image.open(photo_path)
+        exif_data = img._getexif()
+
+        # Extract latitude and longitude from EXIF data
+        gps_info = exif_data.get(34853) #'GPSInfo is a dict
+        # This does not mean that all the GPS fields are populated. 
+        
+        lat = gps_info.get(2, None)
+        lon = gps_info.get(4, None)
+        isn = gps_info.get(1, None)
+        ise = gps_info.get(3, None)
+        if isn and isn != "N":
+            print(f"{photo_path} WRONG hemisphere N/S {isn}")
+        if ise and ise != "E":
+            print(f"{photo_path} WRONG hemisphere E/W")
+        point = gps_info.get(17, None) # direction the camera is point towards
+        pointref = gps_info.get(16, None) # "M" for magnetic
+        taken = gps_info.get(29, None) #  GPS datestamp 
+    except:
+        #print(f"{photo_path} - lat/lon exception")
+        # for key, value in gps_info.items():
+            # print(key, value, value.type())
+        return None, None
+        
+        # Convert coordinates to decimal format
+    if lat and lon:
+        # lat and lon are tuples e.g.  (47.0, 35.0, 5.77)
+        latitude = float(lat[0] + lat[1] / 60 + lat[2] / 3600)
+        longitude = float(lon[0] + lon[1] / 60 + lon[2] / 3600)
+
+        # Reverse geocode coordinates to get address
+        #address = geolocator.reverse((latitude, longitude))
+        return latitude, longitude
+    else:
+        # print(f"{photo_path} - lat/lon conversion exception {lat=} {lon=}")
+        # for key, value in gps_info.items():
+            # print(key, value, type(value))
+        return None, None
+
+
+# Specify the folder containing the photos
+photo_folder = Path("../../expoweb")
+photo_folder = Path("/mnt/d/EXPO/PHOTOS")
+
+photos = photo_folder.rglob("*.jpg")
+# for p in photos:
+    # print(p)
+
+# Initialize a Folium map centered at an initial location
+map = folium.Map(location=[47.691036, 13.821314], zoom_start=13)
+
+photoset = []
+# Iterate through photos in the folder
+for filename in photos: # os.listdir(photo_folder):
+    photo_path = filename #os.path.join(photo_folder, filename)
+
+    # Extract latitude, longitude, and address from photo
+    latitude, longitude = get_coordinates(photo_path)
+
+    if latitude and longitude:
+        print(f"{photo_path} {latitude:.6f} {longitude:.6f}")
+        # Create a marker for each photo with its location and address
+        folium.Marker(
+            location=[latitude, longitude],
+            popup=f"{filename}",
+            icon=folium.Icon(color="red", icon="camera"),
+        ).add_to(map)
+        photoset.append(filename)
+# Save the map as an HTML file
+map.save("photo_map.html")
+print(f"Found {len(photoset)} GPS located photos in '{photo_folder}' and subdirectories.")