使用python实现图片的人脸检测功能

向右看齐 2023-10-18 11:39 58阅读 0赞

Demo主要使用了Python3的类库实现，有下载失败的欢迎联系，注释处分别为可识别和不可识别的两张网络图片，Xml文件可以[点击下载][Link 1]

import cv2  
import urllib.request  
import time  
def cbk(a, b, c):  
per = 100.0 \* a \* b / c  
if per > 100:  
per = 100  
print('%.2f%%' % per)

def faceDetect(img,face\_cascade):  
temp = False  
try:  
gray = cv2.cvtColor(img,cv2.COLOR\_BGR2GRAY)  
  
  
faces = face\_cascade.detectMultiScale(gray,1.3,5)  
  
for(x,y,w,h) in faces:  
temp = True  
  
except Exception as e:  
print ('Exception: ', e)  
return temp  
  
def readImg(urlStr):  
try:  
return urllib.request.urlopen(urlStr).read()  
except Exception as e:  
print ('Exception: ', e)  
return "error"

def main():  
\# 这个指向本地的xml配置文件  
face\_cascade = cv2.CascadeClassifier("G:\\Java\\python\\haarcascades\\haarcascade\_frontalface\_default.xml")  
\# https://ss2.bdstatic.com/70cFvnSh\_Q1YnxGkpoWK1HF6hhy/it/u=3443139237,286953275&fm=26&gp=0.jpg  
\# https://timgsa.baidu.com/timg?image&quality=80&size=b9999\_10000&sec=1543575837&di=78f2d4dc61f33874f7decd4b3d2c75ba&imgtype=jpg&er=1&src=http%3A%2F%2Fb.hiphotos.baidu.com%2Fzhidao%2Fwh%253D450%252C600%2Fsign%3D977c525998510fb3784c7f93ec03e4a3%2F5fdf8db1cb1349547892f484504e9258d0094a45.jpg  
urlstr = "https://ss2.bdstatic.com/70cFvnSh\_Q1YnxGkpoWK1HF6hhy/it/u=3443139237,286953275&fm=26&gp=0.jpg";  
print("exec============="+urlstr)  
content=readImg(urlstr)  
if content == "error":  
print("未读取到图片")  
\# 图片保存地址  
path = "G:\\\\Java\\\\python\\\\test.jpg";  
with open(path,'wb') as ftemp :  
ftemp.write(content)  
  
frame = cv2.imread(path)  
isPeople = faceDetect(frame,face\_cascade)  
  
if isPeople :  
print("true")  
else:  
print("false")  
  
main()

这里是执行结果

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA0Nzk5ODk_size_16_color_FFFFFF_t_70][]

[Link 1]: https://download.csdn.net/download/u010479989/10803812
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA0Nzk5ODk_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20181123192630122.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA0Nzk5ODk=,size_16,color_FFFFFF,t_70