How to update plot window of image using opencv python at certain regular interval?

Question

I've set of images which are dynamically being generated by another python script "image_generator.py" at some rate. I want to display these images dynamically. Is there any method so that I can update my image plot with newly generated image from "image_generator.py"?

Answer 1

image_generator.py

import numpy


def generate(height, width, channels):
    img = numpy.random.rand(height, width, channels)
    img = (255*img).astype(numpy.uint8)
    return img

example.py

import cv2
from image_generator import generate

n_images = 20
height = 200
width = 200
channels = 3

for n in range(n_images):
    img = generate(height, width, channels)
    cv2.imshow('Random image', img)
    k = cv2.waitKey(200)
    if k == ord('q') & 0xFF:
        break

Note that this is no different than if they were in the same Python file. Once you import from another module, you have access to the functions as they it were sitting inside your Python script.