read-and-write-image's Introduction

READ AND WRITE AN IMAGE

AIM

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.

Software Required:

Anaconda - Python 3.7

Algorithm:

Step1:

Choose an image and save it as a filename.jpg

Step2:

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

Step3:

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

Step4:

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

Step5:

End the program and close the output image windows.

Program:

Developed By: S.ABHISHEK

Register Number: 212221230002

i) #To Read,display the image

import cv2 as cv
capture=cv.imread("C:/Users/abhid/Downloads/a.jpg")
cv.imshow('PIC',capture)
cv.waitKey(0)

ii) #To write the image

import cv2 as cv
capture=cv.imread("C:/Users/abhid/Downloads/a.jpg")
cv.imwrite("photo.jpg",capture)
cv.imshow("PIC",capture)
cv.waitKey(0)

iii) #Find the shape of the Image

import random
import cv2 as cv
capture=cv.imread("C:/Users/abhid/Downloads/a.jpg")
print(capture.shape)

iv) #To access rows and columns

import random
import cv2 as cv
capture=cv.imread("C:/Users/abhid/Downloads/a.jpg")
for i in range(70,90):
    for j in range(110,170):
        capture[i][j]=[0,0,0]
cv.imshow("PIC",capture)
cv.waitKey(0)

v) #To cut and paste portion of image

import random
import cv2 as cv
capture=cv.imread("C:/Users/abhid/Downloads/a.jpg")
tag=capture[100:120,110:120]
capture[0:20,10:20]=tag
cv.imshow("PIC",capture)
cv.waitKey(0)