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 extract_direction(self): ''' Extract image direction (i.e. compass, heading, bearing) ''' fields = ['GPS GPSImgDirection', 'EXIF GPS GPSImgDirection', 'GPS GPSTrack', 'EXIF GPS GPSTrack'] direction, _ = self._extract_alternative_fields(fields) if direction is not None: direction = normalize_bearing(direction, check_hex=True) return direction
def extract_direction(self): ''' Extract image direction (i.e. compass, heading, bearing) ''' fields = ['GPS GPSImgDirection', 'EXIF GPS GPSImgDirection', 'GPS GPSTrack', 'EXIF GPS GPSTrack'] direction, _ = self._extract_alternative_fields(fields) if direction is not None: direction = normalize_bearing(direction, check_hex=True) return direction