# b_image_line_tracing_to_text.py

# b_image_line_tracing_to_text.py

from PIL import Image, ImageTk

from tkFileDialog import askopenfilename
img_data = askopenfilename(filetypes=[('png files', '.png')]) # needs to be placed after pack()

image = Image.open(img_data)
w,h = image.size
img = Image.new('RGB', (w,h))
rgb = image.convert("RGB")
sss = list(rgb.getdata())
xxx = sss[:]

d = list(set(sss))
d.sort()
print d
L = len(xxx)

while xxx:
    x,xxx = xxx[:w],xxx[w:]
    try:
        i = x.index((255, 255, 255))
        print i,
    except:
        print w,