Recovering accidentally deleted photographs

Recently, I helped my parents recover some deleted photographs from their hard drive using a Linux program called "photorec."  Though there were probably only a few hundred photos deleted, photorec was able to find more than 100,000 jpegs totalling about 1GB of in size.  Many of these photos consisted of tiny thumbnails that had been temporarily cached by the web browser.  To help me sort through these photos, I wrote a script using the Python Imaging Library (PIL) that examines the exif metadata. 

# -*- coding: utf-8 -*-

"""

Created on Sat Jul 27 01:02:56 2013

@author: dan

"""

from PIL import Image

from PIL.ExifTags import TAGS

import os, shutil

#helps to sort the photos into separate folders with model names

def main(directory,dest):

modellist = review_models(directory,dest)

handle_files(directory,dest,modellist)

# function to review exif data

def get_exif_data(fname):

ret = {}

img = Image.open(fname)

if hasattr(img,'_getexif'):

exifinfo = img._getexif()

if exifinfo != None:

for tag, value in exifinfo.items():

decoded = TAGS.get(tag, tag)

ret[decoded] = value

return ret

#select files taken by a specific model of camera and move to a specified folder

def review_files(directory,dest,model):

fileses = os.walk(directory)

for f in fileses:

path = f[0]

images = f[2]

for i in images:

g = os.path.join(path,i)

try:

ret = get_exif_data(g)

items = ret.items()

for item in items:

if item[0] == 'Model':

if item[1] == model:

shutil.move(g,dest)

except:

pass

# sorts photos by camera brand

def handle_files(directory,dest,modellist):

models = open(modellist,'r')

ml = models.read()

mm = ml.split(",")

for m in mm:

try:

newpath = os.path.join(dest,m)

if not os.path.exists(newpath):

os.makedirs(newpath)

except:

pass

fileses = os.walk(directory)

for f in fileses:

path = f[0]

images = f[2]

for i in images:

g = os.path.join(path,i)

try:

ret = get_exif_data(g)

items = ret.items()

for item in items:

if item[0] == 'Model':

outpath = os.path.join(dest,item[1])

shutil.move(g,outpath)

except:

pass

#creates a txt file listing all models seperated by commas

def review_models(directory,dest):

fileses = os.walk(directory)

txt = os.path.join(directory,"errors.txt")

txt2 = os.path.join(dest,"Models.txt")

models = open(txt2,'w')

models.close()

errorfile = open(txt,'w')

errorfile.close()

for f in fileses:

path = f[0]

images = f[2]

for i in images:

try:

g = os.path.join(path,i)

ret = get_exif_data(g)

items = ret.items()

for item in items:

if item[0] == 'Model':

models = open(txt2,'a')

models.write(item[1])

models.write(",")

models.close()

except:

error = open(txt,'a')

error.write(i + " \n")

error.close()

return txt2

#finds photos with identical creation datetimes and moves the smaller #fragments to a different location

def rmDuplicates(directory,dest):

fileses = os.walk(directory)

for f in fileses:

path = f[0]

images = f[2]

for i in images:

try:

g1 = os.path.join(path,i)

date1 = findDate(path,i)

fileses2 = os.walk(directory)

for f2 in fileses2:

path2 = f2[0]

images2 = f2[2]

for i2 in images2:

try:

g2 = os.path.join(path2,i2)

if g2 == g1:

pass

else:

stat1 = os.stat(g1)

stat2 = os.stat(g2)

s1 = stat1.st_size

s2 = stat2.st_size

date2 = findDate(path2,i2)

if date2 == date1:

if int(s1)>int(s2):

shutil.move(g2,dest)

else:

shutil.move(g1,dest)

except:

pass

except:

pass

#returns date and time image was created

def findDate(path,filename):

g = os.path.join(path,filename)

ret = get_exif_data(g)

items = ret.items()

photo = None

for item in items:

if item[0] == 'DateTimeDigitized':

photo = item[1]

return photo

def print_exif(path,filename):

g = os.path.join(path,filename)

ret = get_exif_data(g)

items = ret.items()

vals = ret.values()

for item in items:

if item[0] == 'DateTimeDigitized':

print item[1]

#print ret.keys()

# print vals

print " \n"

print "EXIF data for photo: " + g + ". "

#for item in items:

# print item[:-1]

# moves all of the photographs from their recup* folders to a single #directory

def group_files(larger_directory,outputfile):

fileses = os.listdir(larger_directory)

for files in fileses:

path = os.path.join(larger_directory,files)

f = os.walk(path)

txt = os.path.join(outputfile,"errors.txt")

errorfile = open(txt,'w')

errorfile.close()

for i in f:

images = i[2]

for image in images:

ipath = os.path.join(path,image)

try:

shutil.move(ipath,outputfile)

except:

error = open(txt,'a')

error.write(ipath + " \n")

error.close()