{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "id": "76c11d1b",
   "metadata": {},
   "outputs": [],
   "source": [
    "import cv2 as cv\n",
    "import numpy as np"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "id": "9b23b408",
   "metadata": {},
   "outputs": [],
   "source": [
    "img = cv.imread('reflections.jpg')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "id": "33367d3a",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "numpy.ndarray"
      ]
     },
     "execution_count": 3,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "type(img)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "id": "49569358",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "(320, 900, 3)"
      ]
     },
     "execution_count": 15,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "img.shape"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "id": "6f0df354",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "864000"
      ]
     },
     "execution_count": 5,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "img.size"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "id": "f527fc78",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "864000"
      ]
     },
     "execution_count": 6,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "320*900*3"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "id": "ec217e25",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "dtype('uint8')"
      ]
     },
     "execution_count": 7,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "img.dtype"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "id": "df757a4d",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "array([24, 70, 64], dtype=uint8)"
      ]
     },
     "execution_count": 8,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "img[100,100]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "id": "19809eec",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "24"
      ]
     },
     "execution_count": 9,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "img[100,100,0]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "id": "30f6d188",
   "metadata": {},
   "outputs": [],
   "source": [
    "cv.imshow('image', img)\n",
    "cv.waitKey(0)\n",
    "cv.destroyAllWindows()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "id": "459bd7f3",
   "metadata": {},
   "outputs": [],
   "source": [
    "for r in range(100):\n",
    "    for c in range(100):\n",
    "        img[r,c] = np.array([5,50,180])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "id": "f148d62e",
   "metadata": {},
   "outputs": [],
   "source": [
    "cv.imshow('altered image', img)\n",
    "cv.waitKey(0)\n",
    "cv.destroyAllWindows()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "id": "60ebf979",
   "metadata": {},
   "outputs": [],
   "source": [
    "img[100:200,100:200] = np.array([5,50,180])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 14,
   "id": "f3ea20de",
   "metadata": {},
   "outputs": [],
   "source": [
    "cv.imshow('altered image', img)\n",
    "cv.waitKey(0)\n",
    "cv.destroyAllWindows()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "id": "5c316cae",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "320"
      ]
     },
     "execution_count": 16,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "img.shape[0]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 17,
   "id": "2de6933d",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "900"
      ]
     },
     "execution_count": 17,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "img.shape[1]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 18,
   "id": "b7b8b2ea",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "3"
      ]
     },
     "execution_count": 18,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "img.shape[2]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 19,
   "id": "720c681d",
   "metadata": {},
   "outputs": [],
   "source": [
    "img[200:300,200:300,2] = 128 "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 20,
   "id": "77cbc415",
   "metadata": {},
   "outputs": [],
   "source": [
    "cv.imshow('altered image', img)\n",
    "cv.waitKey(0)\n",
    "cv.destroyAllWindows()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 21,
   "id": "769f68bf",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "True"
      ]
     },
     "execution_count": 21,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "cv.imwrite('alteredreflections.jpg', img)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 22,
   "id": "8b5ffdd5",
   "metadata": {},
   "outputs": [],
   "source": [
    "squarechunk = img[200:300, 600:700]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 23,
   "id": "5f53fb9b",
   "metadata": {},
   "outputs": [],
   "source": [
    "cv.imshow('altered image', squarechunk)\n",
    "cv.waitKey(0)\n",
    "cv.destroyAllWindows()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "d15d3094",
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
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   "display_name": "Python 3 (ipykernel)",
   "language": "python",
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  "language_info": {
   "codemirror_mode": {
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   "file_extension": ".py",
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   "pygments_lexer": "ipython3",
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 "nbformat": 4,
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