To write a python program using OpenCV to do the following image manipulations. i) Read, display, and write an image. ii) Access the rows and columns in an image. iii) Cut and paste a small portion of the image.

Anaconda - Python 3.7

Choose an image and save it as a filename.jpg

Use imread(filename, flags) to read the file.

Use imshow(window_name, image) to display the image.

Use imwrite(filename, image) to write the image.

End the program and close the output image windows.

i) #To Read,display the image

  import cv2
img=cv2.imread("dipt.jpg",1)
cv2.imshow('GURUMOORTHI R 212222230042',img)
cv2.waitKey(0)

ii) #To write the image

import cv2
img = cv2.imread('dipt.jpg', 1)
new_img = cv2.imwrite('dipt_copy.jpg', img)
cv2.imshow('GURUMOORTHI R 212222230042', img)
cv2.waitKey(0)

iii) #Find the shape of the Image

import cv2
img = cv2.imread('dipt.jpg', 1)
print(img.shape)

iv) #To access rows and columns

import cv2
import random
img = cv2.imread('dipt.jpg', 1)
for i in range(100):
    for j in range(img.shape[1]):
        img[i][j] = [random.randint(0, 255), random.randint(0, 255), random.randint(0, 255)]
cv2.imshow('part image', img)
cv2.waitKey(0)
cv2.destroyAllWindows()

v) #To cut and paste portion of image

import cv2
img = cv2.imread('dipt.jpg', 1)
tag = img[300:400, 300:400]
img[50:150, 50:150] = tag
cv2.imshow('GURUMOORTHI R 212222230042', img)
cv2.waitKey(0)
cv2.destroyAllWindows()

Thus the images are read, displayed, and written successfully using the python program.