convertingAnImageTo 8bit.py

import cv2

# Input image

input = cv2.imread('forest.jpg')

# Get input size

height, width = input.shape[:2]

# Desired "pixelated" size

w, h = (256, 256)

# Resize input to "pixelated" size

temp = cv2.resize(input, (w, h), interpolation=cv2.INTER_LINEAR)

# Initialize output image

output = cv2.resize(temp, (width, height), interpolation=cv2.INTER_NEAREST)
cv2.imshow("pixelate.jpg", output)
cv2.waitKey(0)