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   "source": [
    "import numpy as np\n",
    "import cv2\n",
    "\n",
    "upbody_cascade=cv2.CascadeClassifier('./haarcascade_upperbody.xml')\n",
    "\n",
    "cap = cv2.VideoCapture(0)  ## zero signifies default camera\n",
    "\n",
    "count=0\n",
    "\n",
    "while True:\n",
    "    ret , img =cap.read()\n",
    "    count=count+1\n",
    "    filename='vid_with_face_%d.png'%(count,)\n",
    "    #convert the captured img into GRAY Color\n",
    "    gray = cv2.cvtColor(img , cv2.COLOR_BGR2GRAY)\n",
    "    #Detect upper body of human if any in the frame\n",
    "    upperbody=upbody_cascade.detectMultiScale(gray,1.3,5)\n",
    "    #check if any upperbody of human is detected , if yes show it in an window and save it \n",
    "    if len(upperbody)>0:\n",
    "        cv2.imshow('img',gray)\n",
    "        cv2.imwrite(filename,gray)\n",
    "    \n",
    "    k = cv2.waitKey(3) & 0xff  #escape key\n",
    "    if k==27:\n",
    "        break\n",
    "    \n",
    "cap.release()\n",
    "cv2.destroyAllWindows()\n",
    "            "
   ]
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