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| 1 #!/usr/bin/python2.4 | 1 # Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| 2 # Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. | |
| 3 # Use of this source code is governed by a BSD-style license that can be | 2 # Use of this source code is governed by a BSD-style license that can be |
| 4 # found in the LICENSE file. | 3 # found in the LICENSE file. |
| 5 | 4 |
| 6 """Compare two images for equality, subject to a mask.""" | 5 """Compare two images for equality, subject to a mask.""" |
| 7 | 6 |
| 8 from PIL import Image | 7 from PIL import Image |
| 9 from PIL import ImageChops | 8 from PIL import ImageChops |
| 10 | 9 |
| 11 import os.path | 10 import os.path |
| 12 | 11 |
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| 49 if mask.size != im1.size: | 48 if mask.size != im1.size: |
| 50 return ("The mask is of a different size than the images (%r vs %r)" % | 49 return ("The mask is of a different size than the images (%r vs %r)" % |
| 51 (mask.size, im1.size), mask) | 50 (mask.size, im1.size), mask) |
| 52 | 51 |
| 53 diff = ImageChops.multiply(diff, mask.convert(diff.mode)) | 52 diff = ImageChops.multiply(diff, mask.convert(diff.mode)) |
| 54 | 53 |
| 55 if max(diff.getextrema()) != (0, 0): | 54 if max(diff.getextrema()) != (0, 0): |
| 56 return ("The images differ", diff) | 55 return ("The images differ", diff) |
| 57 else: | 56 else: |
| 58 return None | 57 return None |
| 59 | |
| 60 | |
| 61 | |
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