我们经常会从不同的设备里取出照片,比如照相机,手机,iphone等等,操作系统记录的创建日期经常 会因为拷贝等原因变动,下面的代码可以给图片按照exif里的创建时间进行排序,非常有用。
- import os
- import shutil
- import Image
- from PIL.ExifTags import TAGS
- def print_all_known_exif_tags():
- for k in sorted(TAGS):
- print k, TAGS[k]
- def print_all_exif_tags(image):
- try:
- img = Image.open(image)
- except Exception, e:
- print image, "skipping due to", e
- else:
- xf = img._getexif()
- for tag in xf:
- print TAGS.get(tag), xf[tag]
- finally:
- print 'done'
- def get_minimum_creation_time(exif_data):
- mtime = "?"
- if 306 in exif_data and exif_data[306] < mtime: # 306 = DateTime
- mtime = exif_data[306]
- if 36867 in exif_data and exif_data[36867] < mtime: # 36867 = DateTimeOriginal
- mtime = exif_data[36867]
- if 36868 in exif_data and exif_data[36868] < mtime: # 36868 = DateTimeDigitized
- mtime = exif_data[36868]
- return mtime
- def get_creationdate_with_filename_as_dict(list_of_folders):
- print "Processing all image files in:"
- result = {}
- for folder in list_of_folders:
- print "- " + folder
- counter = 0
- for f in os.listdir(folder):
- counter += 1
- fullFileName = folder + "\\" + f
- try:
- img = Image.open(fullFileName)
- except Exception, e:
- print " Skipping '%s' due to exception: %s"%(f, e)
- continue
- mtime = get_minimum_creation_time(img._getexif())
- i = 0
- while mtime+"_"*i in result:
- i += 1
- mtime = mtime+"_"*i
- result[mtime] = fullFileName
- print " Found %s orignal files in %s."%(counter, folder)
- print "Added total of %s to dictionary."%len(result)
- return result
- def copy_from_image_dict_to_directory(image_dict, output_dir):
- assert os.path.exists(output_dir)
- for i,key in enumerate(sorted(image_dict)):
- dummy, extension = os.path.splitext(image_dict[key])
- new_file_name = key.replace(":", "-") + extension
- output_file = output_dir + new_file_name
- shutil.copy2(image_dict[key], output_file)
- print "Copied %s files to %s"%(i+1, output_dir)
- if __name__=="__main__":
- source_dir = "/var/tmp/images"
- output_dir = "/var/tmp/output"
- # obtain /var/tmp/images/iPhone, /var/tmp/images/CanonPowerShot, /var/tmp/images/Nikon1
- list_of_folders = [source_dir + subfolder for subfolder in os.listdir(source_dir)]
- all_files = get_creationdate_with_filename_as_dict(list_of_folders)
- copy_from_image_dict_to_directory(all_files, output_dir)
来源: http://www.phpxs.com/code/1005128/