image_slice.py

# Python script to slice an image with a grid into equal sized pieces
# pip install Pillow
#
# Usage:
# python image_slicy.py IMAGE_PATH OUTPUT_FOLDER COLUMNS ROWS

import sys

from PIL import Image

image = sys.argv[1]
folder = sys.argv[2]
columns = int(sys.argv[3])
rows = int(sys.argv[4])

img = Image.open(image)

xSize = img.width / columns
ySize = img.height / rows

i = 0
for c in range(0, columns):
    for r in range(0, rows):
        x = c * xSize
        y = r * ySize
        sub_image = img.crop((x, y, x + xSize, y + ySize))
        sub_image.save("{0}/img_{1}.png".format(folder, i))
        i+= 1