OpenCV实现面部识别并添加圣诞帽

矫情吗；* 2022-04-05 13:44 198阅读 0赞

Opencv抠图并面部检测后添加圣诞帽

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NoZXJwYWh1_size_16_color_FFFFFF_t_70][]

从网上获取Trump的头像, 再使用EigenFaceRecognizer\_create单独识别出Trump

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NoZXJwYWh1_size_16_color_FFFFFF_t_70 1][]

import cv2
    import numpy as np
    filename='faces.jpg'
    hat=cv2.imread('hat.jpg')
    
    #构建mask
    hsv=cv2.cvtColor(hat,cv2.COLOR_RGB2HSV)
    black_lower=np.array([0,0,0])
    black_upper=np.array([180,180,180])
    mask=cv2.inRange(hsv,black_lower,black_upper)
    #cv2.imshow('mask',mask)
    #腐蚀膨胀
    erode=cv2.erode(mask,None,iterations=1)
    #cv2.imshow('erode',erode)
    dilate=cv2.dilate(erode,None,iterations=1)
    #cv2.imshow('dilate',dilate)
    
    def detect(filename):
        face_cascade=cv2.CascadeClassifier('haarcascade_frontalface_default.xml')
        img=cv2.imread(filename)
        gray=cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)
        faces=face_cascade.detectMultiScale(gray,scaleFactor=1.055,minNeighbors=5,minSize=(30,30))
        for (x,y,w,h) in faces:
            #img=cv2.rectangle(img,(x,y),(x+w,y+h),(255,0,0),2)#面部识别方框
            sp=hat.shape
            hatSizeH=int(sp[0]/sp[1]*w)
            if hatSizeH>y:
                hatSizeH=y
            hatResize=cv2.resize(hat,(w,hatSizeH),interpolation=cv2.INTER_NEAREST)
            dilateResize=cv2.resize(dilate,(w,hatSizeH),interpolation=cv2.INTER_NEAREST)
            top=y-hatSizeH
            if top<=0:
                top=0
            rows,cols,channels=hatResize.shape
            roi=img[top:top+rows,x:x+cols]
    
            for i in range(rows):
              for j in range(cols):
                if dilateResize[i,j]==0:#0代表黑色的点
                   img[top+i,x+j]=hatResize[i,j]#此处替换颜色，为BGR通道
        cv2.namedWindow('leaders')
        cv2.imshow('leaders',img)
        cv2.imwrite('leaders_withHats_withoutRectangles.jpg',img)
        cv2.waitKey(0)
    detect(filename)

计组令人窒息, 丢下代码就跑, 有空再更

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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NoZXJwYWh1_size_16_color_FFFFFF_t_70 1]: /images/20220405/0c1a2d7cd1534aa2bc0d6bea29bd3583.png