homework/Day_002_HW.ipynb

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    "# 作業\n",
    "\n",
    "使用 [Lena](http://optipng.sourceforge.net/pngtech/img/lena.png)\n",
    "\n",
    "- 改變圖片的 color space (`HLS`, `LAB`) 並呈現"
   ]
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    "import cv2"
   ]
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   "source": [
    "img_path = 'data/lena.png'"
   ]
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  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "HLS"
   ]
  },
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    "# 以彩色圖片的方式載入\n",
    "img = cv2.imread(img_path, cv2.IMREAD_COLOR)\n",
    "\n",
    "# 改變不同的 color space\n",
    "img_hsv = cv2.cvtColor(img, cv2.COLOR_BGR2HLS)\n",
    "\n",
    "# 為了要不斷顯示圖片，所以使用一個迴圈\n",
    "while True:\n",
    "    cv2.imshow('bgr', img)\n",
    "    cv2.imshow('hsv', img_hsv)\n",
    "\n",
    "    # 直到按下 ESC 鍵才會自動關閉視窗結束程式\n",
    "    k = cv2.waitKey(0)\n",
    "    if k == 27:\n",
    "        cv2.destroyAllWindows()\n",
    "        break"
   ]
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   "cell_type": "markdown",
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    "# 以彩色圖片的方式載入\n",
    "img = cv2.imread(img_path, cv2.IMREAD_COLOR)\n",
    "\n",
    "# 改變不同的 color space\n",
    "img_hsv = cv2.cvtColor(img, cv2.COLOR_BGR2LAB)\n",
    "\n",
    "# 為了要不斷顯示圖片，所以使用一個迴圈\n",
    "while True:\n",
    "    cv2.imshow('bgr', img)\n",
    "    cv2.imshow('hsv', img_hsv)\n",
    "\n",
    "    # 直到按下 ESC 鍵才會自動關閉視窗結束程式\n",
    "    k = cv2.waitKey(0)\n",
    "    if k == 27:\n",
    "        cv2.destroyAllWindows()\n",
    "        break"
   ]
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