from PIL import Image
import numpy as np

# Create an RGB pixel array (example)

width = 256
height = 256
rgb = np.zeros((height, width, 3), dtype=np.uint8)

for i in range(256):				# y
    for j in range(8):				# x
        rgb[i, j] = [255, 0, 0]			# red
        rgb[i, j + 8] = [0, 255, 0]             # green
        rgb[i, j + 16] = [0, 0, 255]		# blue
        rgb[i, j + 24] = [255, 255, 255]	# white

# Create an image from the RGB array
image = Image.fromarray(rgb, 'RGB')

# Save the image in BMP format
image.save('output_image.bmp')