python检测猫脸

本人喜欢猫，今天用python完成了对猫的检测
代码：

# -*- coding: utf-8 -*-
"""
Created on Wed Oct 16 09:23:38 2019

@author: Administrator
"""

import cv2 
filepath = "E:\the_data\opencv\cat5.jpg"

img = cv2.imread(filepath) # 读取图片 
gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY) # 转换灰色 
# OpenCV猫脸识别分类器 
classifier = cv2.CascadeClassifier( "E:\the_data\opencv\xml\lbpcascade_frontalcatface.xml" )
color = (0, 255, 0) # 定义绘制颜色 


# 调用识别猫脸 
faceRects = classifier.detectMultiScale( gray, scaleFactor=1.1, minNeighbors=3, minSize=(5, 5))
#faceRects = classifier.detectMultiScale( gray, scaleFactor=1.3, minNeighbors=3, minSize=(20, 20))

if len(faceRects): # 大于0则检测到猫脸 
    for faceRect in faceRects: # 单独框出每一张猫脸 
        x, y, w, h = faceRect 
        # 框出猫脸 
        cv2.rectangle(img, (x, y), (x + h, y + w), color, 2) 
 
      
cv2.imshow("image", img) # 显示图像 
c = cv2.waitKey(10) 
cv2.waitKey(0) 
cv2.destroyAllWindows()

效果展示：