def get_geotag_properties_from_exif(image, offset_angle=0.0, verbose=False):
try:
exif = ExifRead(image)
except:
print(
"Error, EXIF could not be read for image " + image +
", geotagging process failed for this image since gps/time properties not read."
)
return None
# required tags
try:
lon, lat = exif.extract_lon_lat()
except:
print(
"Error, " + image +
" image latitude or longitude tag not in EXIF. Geotagging process failed for this image, since this is required information."
)
return None
if lat != None and lon != None:
geotag_properties = {"MAPLatitude": lat}
geotag_properties["MAPLongitude"] = lon
else:
print(
"Error, " + image +
" image latitude or longitude tag not in EXIF. Geotagging process failed for this image, since this is required information."
)
return None
try:
timestamp = exif.extract_capture_time()
except:
print(
"Error, " + image +
" image capture time tag not in EXIF. Geotagging process failed for this image, since this is required information."
)
return None
geotag_properties["MAPCaptureTime"] = datetime.datetime.strftime(
timestamp, "%Y_%m_%d_%H_%M_%S_%f")[:-3]
# optional fields
try:
geotag_properties["MAPAltitude"] = exif.extract_altitude()
except:
if verbose:
print("Warning, image altitude tag not in EXIF.")
try:
heading = exif.extract_direction()
if heading is None:
heading = 0.0
heading = normalize_bearing(heading + offset_angle)
# bearing of the image
geotag_properties["MAPCompassHeading"] = {
"TrueHeading": heading,
"MagneticHeading": heading
}
except:
if verbose:
print("Warning, image direction tag not in EXIF.")
return geotag_properties
def get_geotag_properties_from_exif(image, offset_angle=0.0, verbose=False):
try:
exif = ExifRead(image)
except:
print_error("Error, EXIF could not be read for image " +
image + ", geotagging process failed for this image since gps/time properties not read.")
return None
# required tags
try:
lon, lat = exif.extract_lon_lat()
except:
print_error("Error, " + image +
" image latitude or longitude tag not in EXIF. Geotagging process failed for this image, since this is required information.")
return None
if lat != None and lon != None:
geotag_properties = {"MAPLatitude": lat}
geotag_properties["MAPLongitude"] = lon
else:
print_error("Error, " + image +
" image latitude or longitude tag not in EXIF. Geotagging process failed for this image, since this is required information.")
return None
try:
timestamp = exif.extract_capture_time()
except:
print_error("Error, " + image +
" image capture time tag not in EXIF. Geotagging process failed for this image, since this is required information.")
return None
try:
geotag_properties["MAPCaptureTime"] = datetime.datetime.strftime(
timestamp, "%Y_%m_%d_%H_%M_%S_%f")[:-3]
except:
print_error("Error, {} image capture time tag incorrect format. Geotagging process failed for this image, since this is required information.".format(image))
return None
# optional fields
try:
geotag_properties["MAPAltitude"] = exif.extract_altitude()
except:
if verbose:
print("Warning, image altitude tag not in EXIF.")
try:
heading = exif.extract_direction()
if heading is None:
heading = 0.0
heading = normalize_bearing(heading + offset_angle)
# bearing of the image
geotag_properties["MAPCompassHeading"] = {"TrueHeading": heading,
"MagneticHeading": heading}
except:
if verbose:
print("Warning, image direction tag not in EXIF.")
return geotag_properties
def get_image_list(path_to_pics):
"""
Create a list of image tuples sorted by capture timestamp.
@param directory: directory with JPEG files
@return: a list of image tuples with time, directory, lat,long...
:param path_to_pics:
"""
print("Searching for jpeg images in ", path_to_pics, end=" ")
file_list = []
for root, sub_folders, files in os.walk(path_to_pics):
file_list += [
os.path.join(root, filename) for filename in files
if filename.lower().endswith(".jpg")
]
files = []
# get DateTimeOriginal data from the images and sort the list by timestamp
for filepath in file_list:
#print(filepath)
metadata = EXIFRead(filepath)
try:
t = metadata.extract_capture_time()
s = int(t.microsecond / 1000000)
geo = metadata.extract_geo()
lat = geo.get("latitude")
lon = geo.get("longitude")
ele = geo.get("altitude")
direction = metadata.extract_direction()
files.append(
Picture_infos._replace(path=filepath,
DateTimeOriginal=t,
SubSecTimeOriginal=s,
Latitude=lat,
Longitude=lon,
Ele=ele,
ImgDirection=direction))
# print t
# print type(t)
except KeyError as e:
# if any of the required tags are not set the image is not added to the list
print("Skipping {0}: {1}".format(filepath, e))
files.sort(key=lambda file: file.DateTimeOriginal)
# print_list(files)
print("{:5} found".format(len(files)))
return files