Display sequence of images using matplotlib

Question

I have this simple python script using OpenCV to load images from a folder and display them in a loop. I want to reproduce this effect using matplotlib.

<         


        

Answer 1

I like the following way of doing this which is really straight-forward and allows the whole figure to be updated, including title, labels etc. rather than just the image.

import numpy as np
from matplotlib import pyplot as plt

for j in range(0,3):
    img = np.random.normal(size=(100,150))
    plt.figure(1); plt.clf()
    plt.imshow(img)
    plt.title('Number ' + str(j))
    plt.pause(3)

A random image is formed.

plt.figure creates the figure the first time round if it does not already exist, and thereafter just makes figure 1 the current figure.

plt.clf clears the figure so subsequent updates don't overlay each other. The image is then displayed with a title.

The plt.pause statement is the key, since this causes the display to be updated - including title, labels etc.