python opencv去图片水印
__author__ = 'River'# -*- coding: utf-8 -*-
import cv2,os,shutil,datetime,re,time
from threading import Thread
from hashlib import md5
PICHASH= {}
def md5_file(name):
try:
m = md5()
a_file = open(name, 'rb')
m.update(a_file.read())
a_file.close()
return m.hexdigest()
except:
return None
def nowater(dir,newdir,dirlist):
globalPICHASH
for ppicdir in dirlist:
if(os.path.isdir(dir+ppicdir)):
sortfiles=os.listdir(dir+ppicdir)
if '.DS_Store' in sortfiles:
sortfiles.remove('.DS_Store')
sortfiles.sort()
for oldfile in sortfiles:
filetype="."+oldfile.split(".")
picname_front=oldfile.split(filetype)
oldfile=dir+ppicdir+"/"+oldfile
jpgname=picname_front+".jpg"
jpgname=newdir+ppicdir+"/"+jpgname
try:
oldfile_hash=md5_file(oldfile)
oldfile_tmphashvalue=PICHASH.get(oldfile_hash)
file_object = open('pichash.txt', 'a')
file_object.write(oldfile+":"+oldfile_hash+'\n')
file_object.close()
if(oldfile_tmphashvalue==None):#新文件,已经处理过的图片，就不会再次处理了
if not os.path.exists(newdir+ppicdir):
os.makedirs(newdir+ppicdir)
#print oldfile哈哈
#print jpgname
print datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")+","+oldfile+",ing\n"
img=cv2.imread(oldfile)
x,y,z=img.shape
if x < 10:#太小文件不处理
print datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")+","+jpgname+"文件太小，跳过"
elif x >8000:#太大的文件不处理
print datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")+","+jpgname+"文件太大，跳过"
elif not os.path.exists(jpgname):#这就是最关键的代码了
for i in xrange(x):
for j in xrange(y):
varP=img
if sum(varP)>250 and sum(varP)<765 :#大于250，小于765（sum比白色的小）
img=
#cv2.imwrite(jpgname,img,)#linux跑悲剧了
cv2.imwrite(jpgname,img)
print "jpgname:"+jpgname
PICHASH=oldfile
print datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")+","+oldfile+",done\n"
else:
print datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")+","+jpgname+"文件已存在，跳过\n"
elif(oldfile_tmphashvalue!=None):
if(os.path.exists(jpgname)):
print datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")+","+jpgname+"文件已存在，跳过\n"
else:
shutil.copyfile(oldfile_tmphashvalue,oldfile)
shutil.copyfile(oldfile,jpgname)
print datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")+","+jpgname+"和老文件一样，拷贝旧文件，跳过"
except Exception,e:
print "Exception:",e
continue
if __name__=='__main__':
dir="pic/"
newdir="picnew/"
list0=[]
list1=[]
list2=[]
list3=[]
list4=[]
for ppicdir in os.listdir(dir) :#生成多个list，主要是为了并发处理多个目录的图片
if(os.path.isdir(dir+ppicdir)):
if (re.compile(r'^.*').match(str(ppicdir))):
list0.append(ppicdir)
elif(re.compile(r'^.*').match(str(ppicdir))):
list1.append(ppicdir)
elif(re.compile(r'^.*').match(str(ppicdir))):
list2.append(ppicdir)
elif(re.compile(r'^.*').match(str(ppicdir))):
list3.append(ppicdir)
elif(re.compile(r'^.*').match(str(ppicdir))):
list4.append(ppicdir)
else:
continue
#启n线程并行处理
Thread(target=nowater,args=(dir,newdir,list0)).start()#这里只有
Thread(target=nowater,args=(dir,newdir,list1,)).start()
Thread(target=nowater,args=(dir,newdir,list2,)).start()
Thread(target=nowater,args=(dir,newdir,list3,)).start()
Thread(target=nowater,args=(dir,newdir,list4,)).start()
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