ImageEncoder.py | Encode text into images

#! /usr/bin/env python
# ImageEncoder.py
# Author: Abdul Fatir
# E-Mail: abdulfatirs@gmail.com

from PIL import Image
import optparse

morse_list={
'A':'.-','B':'-...','C':'-.-.','D':'-..','E':'.','F':'..-.',
'G':'--.','H':'....','I':'..','J':'.---','K':'-.-','L':'.-..',
'M':'--','N':'-.','O':'---','P':'.--.','Q':'--.-','R':'.-.',
'S':'...','T':'-','U':'..-','V':'...-','W':'.--','X':'-..-',
'Y':'-.--','Z':'--..','0':'-----','1':'.----','2':'..---','3':'...--',
'4':'....-','5':'.....','6':'-....','7':'--...','8':'---..','9':'----.',
'.':'.-.-.-',',':'--..--','?':'..--..',"'":'.----.','/':'-..-.','(':'-.--.-',
')':'-.--.-',':':'---...',';':'-.-.-.','=':'-...-','+':'.-.-.','-':'-....-',
'_':'..--.-','"':'.-..-.','$':'...-..-','':''
}

def EncodeToImage(data,_PNG):
    letters = list(data)
    pixsum = 0
    whitePixels = []
    for letter in letters:
        _lettermorse = morse_list[letter]
        _morsechars = list(_lettermorse)
        for morsechar in _morsechars:
            intval = ord(morsechar)
            pixsum += intval
            whitePixels.append(pixsum)
        pixsum += 32
        whitePixels.append(pixsum)
    W = 100
    H = whitePixels[len(whitePixels)-1]/100 + 1
    img = Image.new( 'RGB', (W,H), "black")
    pixels = img.load()

    for whitePixel in whitePixels:
        y = whitePixel/100
        x = whitePixel%100
        pixels[x,y] = (255,255,255)
    img.save(_PNG)

def Main():
    parser = optparse.OptionParser('usage: python ImageEncoder.py -o <output PNG image name>')
    parser.add_option('-o',dest='outPNG',type='string',help='Please specify the output image file')
    (options,arg) = parser.parse_args()
    if (options.outPNG == None):
        print parser.usage
        exit(0)
    else:
        outPNG = options.outPNG
    datatoencode = raw_input("Please enter data to encode (without spaces):")
    EncodeToImage(datatoencode.upper(),outPNG)

if __name__ == '__main__':
    Main()