def main(ifile, ofile, sc):
img = Image.open(ifile)
font = ImageFont.load_default()
letter_width = font.getsize("x")[0]
letter_height = font.getsize("x")[1]
wcf = letter_height / letter_width
width = round(img.size[0] * sc * wcf)
height = round(img.size[1] * sc)
img = img.resize((width, height))
img = np.sum(np.asarray(img), axis=2)
min_i = img.min()
max_i = img.max()
img -= min_i
img = (1.0 - img / (max_i - min_i))
chars = np.asarray(list(' .,:irs?@9B&#'))
img = img * (chars.size - 1).astype(int)
lines = ("\n".join(("".join(r) for r in chars[img]))).split("\n")
bgcolor = 'white'
n_width = letter_width * width
n_height = letter_height * height
n_img = Image.new("RGBA", (n_width, n_height), bgcolor)
draw = ImageDraw.Draw(n_img)
nbins = len(lines)
color_range = list(ImageColor('black').range_to(ImageColor('blue'), nbins))
left_padding = 0
y = 0
idx = 0
for l in lines:
color = color_range[idx]
idx += 1
draw.text((left_padding, y), line, color.hex, font=font)
y += letter_height
n_img.save(ofile)
