library_histogram_equalization.ipynb

{
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  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "import cv2\n",
    "import numpy\n",
    "location=\"SampleImages/\"\n",
    "name=\"dark.jpg\"\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [],
   "source": [
    "img = cv2.imread(location+name)\n",
    "img_to_yuv = cv2.cvtColor(img,cv2.COLOR_BGR2YUV)\n",
    "img_to_yuv[:,:,0] = cv2.equalizeHist(img_to_yuv[:,:,0])\n",
    "hist_equalization_result = cv2.cvtColor(img_to_yuv, cv2.COLOR_YUV2BGR)\n",
    " \n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "True"
      ]
     },
     "execution_count": 3,
     "metadata": {},
     "output_type": "execute_result"
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   ],
   "source": [
    "cv2.imwrite(location+'library_equalize_'+name,hist_equalization_result)\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "array([[[26, 26, 26],\n",
       "        [26, 26, 26],\n",
       "        [26, 26, 26],\n",
       "        ...,\n",
       "        [45, 45, 45],\n",
       "        [45, 45, 45],\n",
       "        [45, 45, 45]],\n",
       "\n",
       "       [[26, 26, 26],\n",
       "        [26, 26, 26],\n",
       "        [26, 26, 26],\n",
       "        ...,\n",
       "        [45, 45, 45],\n",
       "        [45, 45, 45],\n",
       "        [45, 45, 45]],\n",
       "\n",
       "       [[26, 26, 26],\n",
       "        [26, 26, 26],\n",
       "        [26, 26, 26],\n",
       "        ...,\n",
       "        [45, 45, 45],\n",
       "        [45, 45, 45],\n",
       "        [45, 45, 45]],\n",
       "\n",
       "       ...,\n",
       "\n",
       "       [[23, 23, 23],\n",
       "        [23, 23, 23],\n",
       "        [23, 23, 23],\n",
       "        ...,\n",
       "        [27, 27, 27],\n",
       "        [27, 27, 27],\n",
       "        [27, 27, 27]],\n",
       "\n",
       "       [[23, 23, 23],\n",
       "        [23, 23, 23],\n",
       "        [23, 23, 23],\n",
       "        ...,\n",
       "        [32, 32, 32],\n",
       "        [32, 32, 32],\n",
       "        [32, 32, 32]],\n",
       "\n",
       "       [[23, 23, 23],\n",
       "        [23, 23, 23],\n",
       "        [23, 23, 23],\n",
       "        ...,\n",
       "        [32, 32, 32],\n",
       "        [32, 32, 32],\n",
       "        [32, 32, 32]]], dtype=uint8)"
      ]
     },
     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": []
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
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