openCV人脸检测-替换 源代码：

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   "cell_type": "code",
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   "source": [
    "import numpy as np\n",
    "import cv2"
   ]
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   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [],
   "source": [
    "face_detector = cv2.CascadeClassifier('./haarcascade_frontalface_alt.xml')\n",
    "img = cv2.imread('./di.jpg')\n",
    "rose = cv2.imread('./rose.png')\n",
    "face_zones = face_detector.detectMultiScale(img)\n",
    "for x,y,w,h in face_zones:\n",
    "    rose = cv2.resize(rose,(w,h))\n",
    "    img[y:y+h,x:x+w] = rose\n",
    "cv2.imshow('hot',img)\n",
    "cv2.waitKey(0)\n",
    "cv2.destroyAllWindows()"
   ]
  }
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