character recognition -Hog+KNN.ipynb

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   "source": [
    "import cv2\n",
    "import glob\n",
    "import numpy as np\n",
    "from PIL import Image\n",
    "import matplotlib.pyplot as plt\n",
    "from sklearn import svm\n",
    "from sklearn.neural_network import MLPClassifier\n",
    "from sklearn.model_selection import train_test_split\n",
    "from sklearn import decomposition\n",
    "from sklearn.neighbors import KNeighborsClassifier\n",
    "from skimage.feature import hog\n",
    "from sklearn.naive_bayes import GaussianNB\n",
    "import tensorflow as tf"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {
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   "source": [
    "X=np.zeros((1430,50*50))\n",
    "Y=np.zeros(1430)\n",
    "for i in range(11,37):\n",
    "    temp=glob.glob(\"Img/Sample0\"+str(i)+\"/\"+\"*.png\")\n",
    "    for j in range(55):\n",
    "        a=Image.open(temp[j])\n",
    "        a=a.resize((50,50), Image.ANTIALIAS)\n",
    "        a=np.asarray(a, dtype=np.uint8)\n",
    "        a=cv2.cvtColor(a, cv2.COLOR_BGR2GRAY)\n",
    "        X[55*(i-11)+j,:]=a.reshape(1,50*50)\n",
    "        Y[55*(i-11)+j]=i-11"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {
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   "source": [
    "X=X/255"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "name": "stderr",
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     "text": [
      "C:\\Users\\Nabeel\\Anaconda3\\lib\\site-packages\\skimage\\feature\\_hog.py:119: skimage_deprecation: Default value of `block_norm`==`L1` is deprecated and will be changed to `L2-Hys` in v0.15\n",
      "  'be changed to `L2-Hys` in v0.15', skimage_deprecation)\n"
     ]
    }
   ],
   "source": [
    "train_hog=np.zeros((1430,512))\n",
    "for i in range(1430):\n",
    "    fd = hog(X[i,:].reshape(50,50), orientations=8, pixels_per_cell=(6, 6),cells_per_block=(1, 1))\n",
    "    train_hog[i,:]=fd"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {
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   "outputs": [],
   "source": [
    "X_train, X_test, y_train, y_test = train_test_split(train_hog, Y, test_size=0.20)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [
    {
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     "execution_count": 6,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "classifier=KNeighborsClassifier()\n",
    "classifier.fit(X_train,y_train)\n",
    "classifier.score(X_test,y_test)"
   ]
  }
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