def geotag_from_gps_trace(process_file_list,
geotag_source,
geotag_source_path,
offset_time=0.0,
offset_angle=0.0,
local_time=False,
sub_second_interval=0.0,
use_gps_start_time=False,
verbose=False):
# print time now to warn in case local_time
if local_time:
now = datetime.datetime.now(tzlocal())
print("Your local timezone is {0}. If not, the geotags will be wrong."
.format(now.strftime('%Y-%m-%d %H:%M:%S %Z')))
else:
# if not local time to be used, warn UTC will be used
print("It is assumed that the image timestamps are in UTC. If not, try using the option --local_time.")
# read gps file to get track locations
if geotag_source == "gpx":
gps_trace = get_lat_lon_time_from_gpx(geotag_source_path, local_time)
elif geotag_source == "nmea":
gps_trace = get_lat_lon_time_from_nmea(geotag_source_path, local_time)
# Estimate capture time with sub-second precision, reading from image EXIF
sub_second_times = estimate_sub_second_time(process_file_list,
sub_second_interval)
if not sub_second_times:
print_error(
"Error, capture times could not be estimated to sub second precision, images can not be geotagged.")
create_and_log_process_in_list(process_file_list,
"geotag_process"
"failed",
verbose)
return
if not gps_trace:
print_error("Error, gps trace file {} was not read, images can not be geotagged.".format(
geotag_source_path))
create_and_log_process_in_list(process_file_list,
"geotag_process",
"failed",
verbose)
return
if use_gps_start_time:
# update offset time with the gps start time
offset_time += (sorted(sub_second_times)
[0] - gps_trace[0][0]).total_seconds()
for image, capture_time in tqdm(zip(process_file_list,
sub_second_times), desc="Inserting gps data into image EXIF"):
if not capture_time:
print_error(
"Error, capture time could not be extracted for image " + image)
create_and_log_process(image,
"geotag_process",
"failed",
verbose=verbose)
geotag_properties = get_geotag_properties_from_gps_trace(
image, capture_time, gps_trace, offset_angle, offset_time, verbose)
create_and_log_process(image,
"geotag_process",
"success",
geotag_properties,
verbose)
def geotag_from_gpx(process_file_list,
import_path,
geotag_source_path,
offset_time=0.0,
offset_angle=0.0,
local_time=False,
sub_second_interval=1.0,
use_gps_start_time=False,
verbose=False):
# print time now to warn in case local_time
if local_time:
now = datetime.datetime.now(tzlocal())
if verbose:
print("Your local timezone is {0}. If not, the geotags will be wrong."
.format(now.strftime('%Y-%m-%d %H:%M:%S %Z')))
else:
# if not local time to be used, warn UTC will be used
if verbose:
print(
"It is assumed that the image timestamps are in UTC. If not, try using the option --local_time.")
# read gpx file to get track locations
gpx = get_lat_lon_time_from_gpx(geotag_source_path,
local_time)
# Estimate capture time with sub-second precision, reading from image EXIF
sub_second_times = estimate_sub_second_time(process_file_list,
sub_second_interval)
if not sub_second_times:
if verbose:
print("Error, capture times could not be estimated to sub second precision, images can not be geotagged.")
create_and_log_process_in_list(process_file_list,
import_path,
"geotag_process"
"failed",
verbose)
return
if not gpx:
if verbose:
print("Error, gpx file was not read, images can not be geotagged.")
create_and_log_process_in_list(process_file_list,
import_path,
"geotag_process"
"failed",
verbose)
return
if use_gps_start_time:
# update offset time with the gps start time
offset_time += (sub_second_times[0] - gpx[0][0]).total_seconds()
for image, capture_time in zip(process_file_list,
sub_second_times):
if not capture_time:
if verbose:
print("Error, capture time could not be extracted for image " + image)
create_and_log_process(image,
import_path,
"geotag_process",
"failed",
verbose=verbose)
geotag_properties = get_geotag_properties_from_gpx(
image, capture_time, gpx, offset_angle, offset_time, verbose)
create_and_log_process(image,
import_path,
"geotag_process",
"success",
geotag_properties,
verbose)
