使用 Python 从图像中提取 gps 坐标

Extracting gps coordinates from image using Python

from PIL import Image
from PIL.ExifTags import TAGS

# path to the image or video
imagename = "image.jpg"

# read the image data using PIL
image = Image.open(imagename)

# extract EXIF data
exifdata = image.getexif()

# iterating over all EXIF data fields
for tag_id in exifdata:
    # get the tag name, instead of human unreadable tag id
    tag = TAGS.get(tag_id, tag_id)
    data = exifdata.get(tag_id)
    # decode bytes 
    if isinstance(data, bytes):
        data = data.decode()
    print(f"{tag:25}: {data}")

Exif版本:0220 组件配置: 快门速度值:(1345, 100) 原始日期时间:2020:08:27 09:43:15 日期时间数字化:2020:08:27 09:43:15 光圈值:(185、100) 亮度值:(930, 100) 曝光偏差值:(0、10) 最大光圈值:(185, 100) 测光模式:2 闪光灯:0 焦距:(358、100) 用户评论: 色彩空间:1 ExifImageWidth:4128 场景捕捉类型:0 亚秒时间:0424 SubsecTimeOriginal:0424 亚秒时间数字化:0424 ExifImageHeight:1908 图片长度:1908 品牌:三星 型号 : SM-M305F 方向 : 6 YCbCr定位:1 曝光时间:(1, 2786) ExifInteroperabilityOffset:944 X分辨率:(72, 1) F 数 : (190, 100) 场景类型: YResolution : (72, 1) ImageUniqueID : E13LLLI00PM E13LLMK03PA

曝光程序:2 自定义渲染:0 ISO速度等级:40 分辨率单位:2 曝光模式:0 FlashPix版本:0100 图片宽度:4128 白平衡:0 软件:M305FDDU5CTF2 日期时间:2020:08:27 09:43:15 数字缩放比例:(0, 0) FocalLengthIn35mmFilm : 27 对比度:0 饱和度:0 清晰度:0 Exif偏移量:226 创客笔记:0100 Z@P

使用模块piexif (pip install piexif)您可以获取exif中的GPS信息,如下所示。

from pprint import pprint
from PIL import Image
import piexif

codec = 'ISO-8859-1'  # or latin-1

def exif_to_tag(exif_dict):
    exif_tag_dict = {}
    thumbnail = exif_dict.pop('thumbnail')
    exif_tag_dict['thumbnail'] = thumbnail.decode(codec)

    for ifd in exif_dict:
        exif_tag_dict[ifd] = {}
        for tag in exif_dict[ifd]:
            try:
                element = exif_dict[ifd][tag].decode(codec)

            except AttributeError:
                element = exif_dict[ifd][tag]

            exif_tag_dict[ifd][piexif.TAGS[ifd][tag]["name"]] = element

    return exif_tag_dict

def main():
    filename = 'IMG_2685.jpg'  # obviously one of your own pictures
    im = Image.open(filename)

    exif_dict = piexif.load(im.info.get('exif'))
    exif_dict = exif_to_tag(exif_dict)

    pprint(exif_dict['GPS'])

if __name__ == '__main__':
   main()

结果

{'GPSAltitude': (94549, 14993),
 'GPSAltitudeRef': 0,
 'GPSDateStamp': '2020:09:04',
 'GPSDestBearing': (1061399, 5644),
 'GPSDestBearingRef': 'T',
 'GPSHPositioningError': (5, 1),
 'GPSImgDirection': (1061399, 5644),
 'GPSImgDirectionRef': 'T',
 'GPSLatitude': ((12, 1), (34, 1), (1816, 100)),
 'GPSLatitudeRef': 'N',
 'GPSLongitude': ((99, 1), (57, 1), (4108, 100)),
 'GPSLongitudeRef': 'E',
 'GPSSpeed': (0, 1),
 'GPSSpeedRef': 'K',
 'GPSTimeStamp': ((13, 1), (2, 1), (4599, 100)),
 'GPSVersionID': (2, 2, 0, 0)}

此处 exif_to_tag 将 exif 代码转换为更具可读性的标签。