Code to alter the original

eric.py

def artistic_black_and_white(image, order=2):
    pix = pixel_array(image)
    draw = ImageDraw.Draw(image)
    for y in range(image_height(image)):
        for x in range(image_width(image)):
            r,g,b = pix[x,y]
            grey_value = (r + g + b)/3
            adjusted_value = int(((grey_value / 255.0) ** (1 / float(order)) * grey_value))
            r = adjusted_value
            g = adjusted_value
            b = adjusted_value
            draw.point((x,y), fill=(r,g,b))

def analyse_image(image_filename):
    name = image_filename.split("/")[-1].split(".")[0]
    original_image = Image.open(image_filename)
    original_image = original_image.convert("RGB")
    save_image(original_image, "output/" + name + "-original.jpg")
    for i in range(20):
        image = original_image.copy()
	greyness = i / 10.0 + 0.1
	artistic_black_and_white(image, greyness)
	save_image(image, "output/" + name + ("%s" % greyness) + "-artistic_black_and_white.jpg")

def run():
    photos_done = 0
    current_image = "photos/eric.jpg"
    pc = photo_colors.PhotoColors()
    analyse_image(current_image)