How to Convert BGR Image into RGB Image using OpenCV

Program 1

import cv2
import matplotlib.pyplot as plt
img=cv2.imread("D://opencvapp//wildlifeImages//walking-dog.jpg")
cv2.imshow('Image Window',img)
# Conver BGR to RGB
rgb=cv2.cvtColor(img,cv2.COLOR_BGR2RGB)
plt.imshow(rgb)
plt.show()
cv2.waitKey(0)
cv2.destroyAllWindows()