Read and write exif geotags from JPEG images

• Piexif
• Pillow

• coord_dec_to_dms(coord)
  • Convert decimal lat/lon to degrees, minutes, seconds (dms)
• lat_dms_to_dec(lat, lat_ref)
  • Convert dms lat to decimal form
  • lat_ref specifies N or S
• lon_dms_to_dec(lon, lon_ref)
  • Convert dms lon to decimal form
  • lon_ref specifies E or W
• write_geo_tag(img_path, lat, lon, alt_abs, hdg=None)
  • write exif geo tags (lat, lon, absolute alt, optional heading) to image
• read_geo_tag(img_path)
  • read exif geo tags from an image in the form (lat, lon, abs alt, hdg)