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"""
LDTP v2 ldtputils init file
@author: Eitan Isaacson <eitan@ascender.com>
@author: Nagappan Alagappan <nagappan@gmail.com>
@copyright: Copyright (c) 2009 Eitan Isaacson
@copyright: Copyright (c) 2009-12 Nagappan Alagappan
@license: LGPL
http://ldtp.freedesktop.org
This file may be distributed and/or modified under the terms of the GNU Lesser General
Public License version 2 as published by the Free Software Foundation. This file
is distributed without any warranty; without even the implied warranty of
merchantability or fitness for a particular purpose.
See 'COPYING' in the source distribution for more information.
Headers in this file shall remain intact.
"""
import ldtp
from ldtp import imagecapture
import xml.dom.minidom
def imagecompare(imgfile1, imgfile2):
try:
import ImageChops, Image
except ImportError:
raise Exception('Python-Imaging package not installed')
try:
diffcount = 0.0
im1 = Image.open(imgfile1)
im2 = Image.open(imgfile2)
imgcompdiff = ImageChops.difference(im1, im2)
diffboundrect = imgcompdiff.getbbox()
imgdiffcrop = imgcompdiff.crop(diffboundrect)
data = imgdiffcrop.getdata()
seq = []
for row in data:
seq += list(row)
for i in xrange(0, imgdiffcrop.size[0] * imgdiffcrop.size[1] * 3, 3):
if seq[i] != 0 or seq[i+1] != 0 or seq[i+2] != 0:
diffcount = diffcount + 1.0
diffImgLen = imgcompdiff.size[0] * imgcompdiff.size[1] * 1.0
diffpercent = (diffcount * 100) / diffImgLen
return diffpercent
except IOError:
raise Exception('Input file does not exist')
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