from helper import unittest, PillowTestCase, lena from PIL import Image try: from PIL import ImageCms ImageCms.core.profile_open except ImportError as v: # Skipped via setUp() pass SRGB = "Tests/icc/sRGB.icm" class TestImageCms(PillowTestCase): def setUp(self): try: from PIL import ImageCms # need to hit getattr to trigger the delayed import error ImageCms.core.profile_open except ImportError as v: self.skipTest(v) def test_sanity(self): # basic smoke test. # this mostly follows the cms_test outline. v = ImageCms.versions() # should return four strings self.assertEqual(v[0], '1.0.0 pil') self.assertEqual(list(map(type, v)), [str, str, str, str]) # internal version number self.assertRegexpMatches(ImageCms.core.littlecms_version, "\d+\.\d+$") i = ImageCms.profileToProfile(lena(), SRGB, SRGB) self.assert_image(i, "RGB", (128, 128)) i = lena() ImageCms.profileToProfile(i, SRGB, SRGB, inPlace=True) self.assert_image(i, "RGB", (128, 128)) t = ImageCms.buildTransform(SRGB, SRGB, "RGB", "RGB") i = ImageCms.applyTransform(lena(), t) self.assert_image(i, "RGB", (128, 128)) i = lena() t = ImageCms.buildTransform(SRGB, SRGB, "RGB", "RGB") ImageCms.applyTransform(lena(), t, inPlace=True) self.assert_image(i, "RGB", (128, 128)) p = ImageCms.createProfile("sRGB") o = ImageCms.getOpenProfile(SRGB) t = ImageCms.buildTransformFromOpenProfiles(p, o, "RGB", "RGB") i = ImageCms.applyTransform(lena(), t) self.assert_image(i, "RGB", (128, 128)) t = ImageCms.buildProofTransform(SRGB, SRGB, SRGB, "RGB", "RGB") self.assertEqual(t.inputMode, "RGB") self.assertEqual(t.outputMode, "RGB") i = ImageCms.applyTransform(lena(), t) self.assert_image(i, "RGB", (128, 128)) # test PointTransform convenience API lena().point(t) def test_name(self): # get profile information for file self.assertEqual( ImageCms.getProfileName(SRGB).strip(), 'IEC 61966-2.1 Default RGB colour space - sRGB') def test_info(self): self.assertEqual( ImageCms.getProfileInfo(SRGB).splitlines(), [ 'sRGB IEC61966-2.1', '', 'Copyright (c) 1998 Hewlett-Packard Company', '']) def test_copyright(self): self.assertEqual( ImageCms.getProfileCopyright(SRGB).strip(), 'Copyright (c) 1998 Hewlett-Packard Company') def test_manufacturer(self): self.assertEqual( ImageCms.getProfileManufacturer(SRGB).strip(), 'IEC http://www.iec.ch') def test_model(self): self.assertEqual( ImageCms.getProfileModel(SRGB).strip(), 'IEC 61966-2.1 Default RGB colour space - sRGB') def test_description(self): self.assertEqual( ImageCms.getProfileDescription(SRGB).strip(), 'sRGB IEC61966-2.1') def test_intent(self): self.assertEqual(ImageCms.getDefaultIntent(SRGB), 0) self.assertEqual(ImageCms.isIntentSupported( SRGB, ImageCms.INTENT_ABSOLUTE_COLORIMETRIC, ImageCms.DIRECTION_INPUT), 1) def test_profile_object(self): # same, using profile object p = ImageCms.createProfile("sRGB") # self.assertEqual(ImageCms.getProfileName(p).strip(), # 'sRGB built-in - (lcms internal)') # self.assertEqual(ImageCms.getProfileInfo(p).splitlines(), # ['sRGB built-in', '', 'WhitePoint : D65 (daylight)', '', '']) self.assertEqual(ImageCms.getDefaultIntent(p), 0) self.assertEqual(ImageCms.isIntentSupported( p, ImageCms.INTENT_ABSOLUTE_COLORIMETRIC, ImageCms.DIRECTION_INPUT), 1) def test_extensions(self): # extensions from io import BytesIO i = Image.open("Tests/images/rgb.jpg") p = ImageCms.getOpenProfile(BytesIO(i.info["icc_profile"])) self.assertEqual( ImageCms.getProfileName(p).strip(), 'IEC 61966-2.1 Default RGB colour space - sRGB') def test_exceptions(self): # the procedural pyCMS API uses PyCMSError for all sorts of errors self.assertRaises( ImageCms.PyCMSError, lambda: ImageCms.profileToProfile(lena(), "foo", "bar")) self.assertRaises( ImageCms.PyCMSError, lambda: ImageCms.buildTransform("foo", "bar", "RGB", "RGB")) self.assertRaises( ImageCms.PyCMSError, lambda: ImageCms.getProfileName(None)) self.assertRaises( ImageCms.PyCMSError, lambda: ImageCms.isIntentSupported(SRGB, None, None)) def test_display_profile(self): # try fetching the profile for the current display device ImageCms.get_display_profile() def test_lab_color_profile(self): ImageCms.createProfile("LAB", 5000) ImageCms.createProfile("LAB", 6500) def test_simple_lab(self): i = Image.new('RGB', (10, 10), (128, 128, 128)) pLab = ImageCms.createProfile("LAB") t = ImageCms.buildTransform(SRGB, pLab, "RGB", "LAB") i_lab = ImageCms.applyTransform(i, t) self.assertEqual(i_lab.mode, 'LAB') k = i_lab.getpixel((0, 0)) # not a linear luminance map. so L != 128: self.assertEqual(k, (137, 128, 128)) L = i_lab.getdata(0) a = i_lab.getdata(1) b = i_lab.getdata(2) self.assertEqual(list(L), [137] * 100) self.assertEqual(list(a), [128] * 100) self.assertEqual(list(b), [128] * 100) def test_lab_color(self): pLab = ImageCms.createProfile("LAB") t = ImageCms.buildTransform(SRGB, pLab, "RGB", "LAB") # Need to add a type mapping for some PIL type to TYPE_Lab_8 in # findLCMSType, and have that mapping work back to a PIL mode # (likely RGB). i = ImageCms.applyTransform(lena(), t) self.assert_image(i, "LAB", (128, 128)) # i.save('temp.lab.tif') # visually verified vs PS. target = Image.open('Tests/images/lena.Lab.tif') self.assert_image_similar(i, target, 30) def test_lab_srgb(self): pLab = ImageCms.createProfile("LAB") t = ImageCms.buildTransform(pLab, SRGB, "LAB", "RGB") img = Image.open('Tests/images/lena.Lab.tif') img_srgb = ImageCms.applyTransform(img, t) # img_srgb.save('temp.srgb.tif') # visually verified vs ps. self.assert_image_similar(lena(), img_srgb, 30) def test_lab_roundtrip(self): # check to see if we're at least internally consistent. pLab = ImageCms.createProfile("LAB") t = ImageCms.buildTransform(SRGB, pLab, "RGB", "LAB") t2 = ImageCms.buildTransform(pLab, SRGB, "LAB", "RGB") i = ImageCms.applyTransform(lena(), t) out = ImageCms.applyTransform(i, t2) self.assert_image_similar(lena(), out, 2) if __name__ == '__main__': unittest.main() # End of file