LSB - SVATTT

lsb.py

from PIL import Image

def main():
    img = Image.open("for1.png")
    pixels = img.load()
    h = img.size[0]
    w = img.size[1]
    out1 = ''
    for row in range(h):
        for col in range(w):
            r,g,b,a = pixels[row,col]
            if a < 255:
                lsb = r & 0b00000001
                print row, col, lsb
                out1 += str(lsb)
    print out1
    flag = ''
    for i in range(0, len(out1), 8):
        binstr = out1[i:i+8]
        flag += chr(int(binstr, 2))
    print flag
    pass

if __name__ == '__main__':
    main()