image_arithmetic.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Image Arithmetic"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "import numpy as np\n",
    "import cv2"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [],
   "source": [
    "a = np.uint8([200])\n",
    "b = np.uint8([100])\n",
    "c = np.uint8([250])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "[[255]]\n",
      "[[0]]\n"
     ]
    }
   ],
   "source": [
    "# OpenCV Addition\n",
    "\n",
    "print(\"{}\".format(cv2.add(a, b))) \n",
    "print(\"{}\".format(cv2.subtract(a, c)))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "[44]\n",
      "[206]\n"
     ]
    }
   ],
   "source": [
    "# Numpy Addition\n",
    "\n",
    "print(\"{}\".format(a+b))\n",
    "print(\"{}\".format(a-c))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [],
   "source": [
    "image = cv2.imread(\"sample_image.jpg\")\n",
    "cv2.imshow(\"Original\", image)\n",
    "cv2.waitKey(0)\n",
    "cv2.destroyAllWindows()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {},
   "outputs": [],
   "source": [
    "M = np.ones(image.shape, dtype=\"uint8\")*100\n",
    "added = cv2.add(image, M)\n",
    "subtracted = cv2.subtract(image, M)\n",
    "cv2.imshow(\"Added\", added)\n",
    "cv2.imshow(\"Subtracted\", subtracted)\n",
    "cv2.waitKey(0)\n",
    "cv2.destroyAllWindows()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  },
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   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
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