Access Webcam in iPython notebook

access_webcam_matplotlib_notebook.ipynb

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   "source": [
    "%matplotlib notebook\n",
    "\n",
    "import cv2\n",
    "import matplotlib.pyplot as plt"
   ]
  },
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   "source": [
    "vc = cv2.VideoCapture(0)\n",
    "\n",
    "plt.ion()\n",
    "\n",
    "if vc.isOpened(): # try to get the first frame\n",
    "    is_capturing, frame = vc.read()\n",
    "    frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)    # makes the blues image look real colored\n",
    "    webcam_preview = plt.imshow(frame)    \n",
    "else:\n",
    "    is_capturing = False\n",
    "\n",
    "while is_capturing:\n",
    "    try:    # Lookout for a keyboardInterrupt to stop the script\n",
    "        is_capturing, frame = vc.read()\n",
    "        frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)    # makes the blues image look real colored\n",
    "        webcam_preview.set_data(frame)\n",
    "        plt.draw()\n",
    "\n",
    "        try:    # Avoids a NotImplementedError caused by `plt.pause`\n",
    "            plt.pause(0.05)\n",
    "        except Exception:\n",
    "            pass\n",
    "    except KeyboardInterrupt:\n",
    "        vc.release()"
   ]
  }
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