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326 lines
14 KiB
Python
326 lines
14 KiB
Python
from helper import unittest, PillowTestCase, hopper
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import datetime
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from PIL import Image
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from io import BytesIO
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import os
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try:
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from PIL import ImageCms
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from PIL.ImageCms import ImageCmsProfile
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ImageCms.core.profile_open
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except ImportError as v:
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# Skipped via setUp()
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pass
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SRGB = "Tests/icc/sRGB_IEC61966-2-1_black_scaled.icc"
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HAVE_PROFILE = os.path.exists(SRGB)
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class TestImageCms(PillowTestCase):
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def setUp(self):
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try:
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from PIL import ImageCms
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# need to hit getattr to trigger the delayed import error
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ImageCms.core.profile_open
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except ImportError as v:
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self.skipTest(v)
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def skip_missing(self):
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if not HAVE_PROFILE:
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self.skipTest("SRGB profile not available")
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def test_sanity(self):
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# basic smoke test.
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# this mostly follows the cms_test outline.
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v = ImageCms.versions() # should return four strings
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self.assertEqual(v[0], '1.0.0 pil')
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self.assertEqual(list(map(type, v)), [str, str, str, str])
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# internal version number
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self.assertRegexpMatches(ImageCms.core.littlecms_version, "\d+\.\d+$")
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self.skip_missing()
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i = ImageCms.profileToProfile(hopper(), SRGB, SRGB)
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self.assert_image(i, "RGB", (128, 128))
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i = hopper()
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ImageCms.profileToProfile(i, SRGB, SRGB, inPlace=True)
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self.assert_image(i, "RGB", (128, 128))
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t = ImageCms.buildTransform(SRGB, SRGB, "RGB", "RGB")
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i = ImageCms.applyTransform(hopper(), t)
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self.assert_image(i, "RGB", (128, 128))
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i = hopper()
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t = ImageCms.buildTransform(SRGB, SRGB, "RGB", "RGB")
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ImageCms.applyTransform(hopper(), t, inPlace=True)
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self.assert_image(i, "RGB", (128, 128))
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p = ImageCms.createProfile("sRGB")
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o = ImageCms.getOpenProfile(SRGB)
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t = ImageCms.buildTransformFromOpenProfiles(p, o, "RGB", "RGB")
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i = ImageCms.applyTransform(hopper(), t)
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self.assert_image(i, "RGB", (128, 128))
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t = ImageCms.buildProofTransform(SRGB, SRGB, SRGB, "RGB", "RGB")
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self.assertEqual(t.inputMode, "RGB")
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self.assertEqual(t.outputMode, "RGB")
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i = ImageCms.applyTransform(hopper(), t)
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self.assert_image(i, "RGB", (128, 128))
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# test PointTransform convenience API
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hopper().point(t)
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def test_name(self):
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self.skip_missing()
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# get profile information for file
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self.assertEqual(
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ImageCms.getProfileName(SRGB).strip(),
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'IEC 61966-2-1 Default RGB Colour Space - sRGB')
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def test_info(self):
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self.skip_missing()
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self.assertEqual(
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ImageCms.getProfileInfo(SRGB).splitlines(), [
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'sRGB IEC61966-2-1 black scaled', '',
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'Copyright International Color Consortium, 2009', ''])
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def test_copyright(self):
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self.skip_missing()
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self.assertEqual(
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ImageCms.getProfileCopyright(SRGB).strip(),
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'Copyright International Color Consortium, 2009')
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def test_manufacturer(self):
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self.skip_missing()
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self.assertEqual(
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ImageCms.getProfileManufacturer(SRGB).strip(),
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'')
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def test_model(self):
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self.skip_missing()
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self.assertEqual(
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ImageCms.getProfileModel(SRGB).strip(),
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'IEC 61966-2-1 Default RGB Colour Space - sRGB')
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def test_description(self):
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self.skip_missing()
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self.assertEqual(
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ImageCms.getProfileDescription(SRGB).strip(),
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'sRGB IEC61966-2-1 black scaled')
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def test_intent(self):
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self.skip_missing()
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self.assertEqual(ImageCms.getDefaultIntent(SRGB), 0)
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self.assertEqual(ImageCms.isIntentSupported(
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SRGB, ImageCms.INTENT_ABSOLUTE_COLORIMETRIC,
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ImageCms.DIRECTION_INPUT), 1)
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def test_profile_object(self):
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# same, using profile object
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p = ImageCms.createProfile("sRGB")
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# self.assertEqual(ImageCms.getProfileName(p).strip(),
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# 'sRGB built-in - (lcms internal)')
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# self.assertEqual(ImageCms.getProfileInfo(p).splitlines(),
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# ['sRGB built-in', '', 'WhitePoint : D65 (daylight)', '', ''])
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self.assertEqual(ImageCms.getDefaultIntent(p), 0)
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self.assertEqual(ImageCms.isIntentSupported(
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p, ImageCms.INTENT_ABSOLUTE_COLORIMETRIC,
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ImageCms.DIRECTION_INPUT), 1)
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def test_extensions(self):
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# extensions
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i = Image.open("Tests/images/rgb.jpg")
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p = ImageCms.getOpenProfile(BytesIO(i.info["icc_profile"]))
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self.assertEqual(
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ImageCms.getProfileName(p).strip(),
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'IEC 61966-2.1 Default RGB colour space - sRGB')
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def test_exceptions(self):
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# the procedural pyCMS API uses PyCMSError for all sorts of errors
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self.assertRaises(
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ImageCms.PyCMSError,
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lambda: ImageCms.profileToProfile(hopper(), "foo", "bar"))
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self.assertRaises(
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ImageCms.PyCMSError,
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lambda: ImageCms.buildTransform("foo", "bar", "RGB", "RGB"))
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self.assertRaises(
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ImageCms.PyCMSError,
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lambda: ImageCms.getProfileName(None))
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self.skip_missing()
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self.assertRaises(
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ImageCms.PyCMSError,
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lambda: ImageCms.isIntentSupported(SRGB, None, None))
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def test_display_profile(self):
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# try fetching the profile for the current display device
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ImageCms.get_display_profile()
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def test_lab_color_profile(self):
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ImageCms.createProfile("LAB", 5000)
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ImageCms.createProfile("LAB", 6500)
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def test_simple_lab(self):
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i = Image.new('RGB', (10, 10), (128, 128, 128))
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psRGB = ImageCms.createProfile("sRGB")
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pLab = ImageCms.createProfile("LAB")
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t = ImageCms.buildTransform(psRGB, pLab, "RGB", "LAB")
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i_lab = ImageCms.applyTransform(i, t)
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self.assertEqual(i_lab.mode, 'LAB')
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k = i_lab.getpixel((0, 0))
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# not a linear luminance map. so L != 128:
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self.assertEqual(k, (137, 128, 128))
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l = i_lab.getdata(0)
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a = i_lab.getdata(1)
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b = i_lab.getdata(2)
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self.assertEqual(list(l), [137] * 100)
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self.assertEqual(list(a), [128] * 100)
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self.assertEqual(list(b), [128] * 100)
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def test_lab_color(self):
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psRGB = ImageCms.createProfile("sRGB")
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pLab = ImageCms.createProfile("LAB")
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t = ImageCms.buildTransform(psRGB, pLab, "RGB", "LAB")
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# Need to add a type mapping for some PIL type to TYPE_Lab_8 in
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# findLCMSType, and have that mapping work back to a PIL mode
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# (likely RGB).
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i = ImageCms.applyTransform(hopper(), t)
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self.assert_image(i, "LAB", (128, 128))
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# i.save('temp.lab.tif') # visually verified vs PS.
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target = Image.open('Tests/images/hopper.Lab.tif')
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self.assert_image_similar(i, target, 30)
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def test_lab_srgb(self):
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psRGB = ImageCms.createProfile("sRGB")
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pLab = ImageCms.createProfile("LAB")
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t = ImageCms.buildTransform(pLab, psRGB, "LAB", "RGB")
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img = Image.open('Tests/images/hopper.Lab.tif')
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img_srgb = ImageCms.applyTransform(img, t)
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# img_srgb.save('temp.srgb.tif') # visually verified vs ps.
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self.assert_image_similar(hopper(), img_srgb, 30)
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self.assertTrue(img_srgb.info['icc_profile'])
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profile = ImageCmsProfile(BytesIO(img_srgb.info['icc_profile']))
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self.assertTrue('sRGB' in ImageCms.getProfileDescription(profile))
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def test_lab_roundtrip(self):
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# check to see if we're at least internally consistent.
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psRGB = ImageCms.createProfile("sRGB")
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pLab = ImageCms.createProfile("LAB")
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t = ImageCms.buildTransform(psRGB, pLab, "RGB", "LAB")
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t2 = ImageCms.buildTransform(pLab, psRGB, "LAB", "RGB")
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i = ImageCms.applyTransform(hopper(), t)
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self.assertEqual(i.info['icc_profile'],
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ImageCmsProfile(pLab).tobytes())
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out = ImageCms.applyTransform(i, t2)
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self.assert_image_similar(hopper(), out, 2)
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def test_profile_tobytes(self):
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i = Image.open("Tests/images/rgb.jpg")
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p = ImageCms.getOpenProfile(BytesIO(i.info["icc_profile"]))
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p2 = ImageCms.getOpenProfile(BytesIO(p.tobytes()))
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# not the same bytes as the original icc_profile,
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# but it does roundtrip
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self.assertEqual(p.tobytes(), p2.tobytes())
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self.assertEqual(ImageCms.getProfileName(p),
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ImageCms.getProfileName(p2))
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self.assertEqual(ImageCms.getProfileDescription(p),
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ImageCms.getProfileDescription(p2))
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def test_extended_information(self):
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self.skip_missing()
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o = ImageCms.getOpenProfile(SRGB)
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p = o.profile
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def assert_truncated_tuple_equal(tup1, tup2, digits=10):
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# Helper function to reduce precision of tuples of floats
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# recursively and then check equality.
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power = 10 ** digits
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def truncate_tuple(tuple_or_float):
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return tuple(
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truncate_tuple(val) if isinstance(val, tuple)
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else int(val * power) / power for val in tuple_or_float)
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self.assertEqual(truncate_tuple(tup1), truncate_tuple(tup2))
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self.assertEqual(p.attributes, 4294967296)
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assert_truncated_tuple_equal(p.blue_colorant, ((0.14306640625, 0.06060791015625, 0.7140960693359375), (0.1558847490315394, 0.06603820639433387, 0.06060791015625)))
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assert_truncated_tuple_equal(p.blue_primary, ((0.14306641366715667, 0.06060790921083026, 0.7140960805782015), (0.15588475410450106, 0.06603820408959558, 0.06060790921083026)))
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assert_truncated_tuple_equal(p.chromatic_adaptation, (((1.04791259765625, 0.0229339599609375, -0.050201416015625), (0.02960205078125, 0.9904632568359375, -0.0170745849609375), (-0.009246826171875, 0.0150604248046875, 0.7517852783203125)), ((1.0267159024652783, 0.022470062342089134, 0.0229339599609375), (0.02951378324103937, 0.9875098886387147, 0.9904632568359375), (-0.012205438066465256, 0.01987915407854985, 0.0150604248046875))))
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self.assertEqual(p.chromaticity, None)
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self.assertEqual(p.clut, {0: (False, False, True), 1: (False, False, True), 2: (False, False, True), 3: (False, False, True)})
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self.assertEqual(p.color_space, 'RGB')
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self.assertEqual(p.colorant_table, None)
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self.assertEqual(p.colorant_table_out, None)
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self.assertEqual(p.colorimetric_intent, None)
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self.assertEqual(p.connection_space, 'XYZ ')
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self.assertEqual(p.copyright, 'Copyright International Color Consortium, 2009')
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self.assertEqual(p.creation_date, datetime.datetime(2009, 2, 27, 21, 36, 31))
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self.assertEqual(p.device_class, 'mntr')
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assert_truncated_tuple_equal(p.green_colorant, ((0.3851470947265625, 0.7168731689453125, 0.097076416015625), (0.32119769927720654, 0.5978443449048152, 0.7168731689453125)))
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assert_truncated_tuple_equal(p.green_primary, ((0.3851470888162112, 0.7168731974161346, 0.09707641738998518), (0.32119768793686687, 0.5978443567149709, 0.7168731974161346)))
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self.assertEqual(p.header_flags, 0)
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self.assertEqual(p.header_manufacturer, '\x00\x00\x00\x00')
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self.assertEqual(p.header_model, '\x00\x00\x00\x00')
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self.assertEqual(p.icc_measurement_condition, {'backing': (0.0, 0.0, 0.0), 'flare': 0.0, 'geo': 'unknown', 'observer': 1, 'illuminant_type': 'D65'})
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self.assertEqual(p.icc_version, 33554432)
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self.assertEqual(p.icc_viewing_condition, None)
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self.assertEqual(p.intent_supported, {0: (True, True, True), 1: (True, True, True), 2: (True, True, True), 3: (True, True, True)})
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self.assertEqual(p.is_matrix_shaper, True)
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self.assertEqual(p.luminance, ((0.0, 80.0, 0.0), (0.0, 1.0, 80.0)))
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self.assertEqual(p.manufacturer, None)
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assert_truncated_tuple_equal(p.media_black_point, ((0.012054443359375, 0.0124969482421875, 0.01031494140625), (0.34573304157549234, 0.35842450765864337, 0.0124969482421875)))
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assert_truncated_tuple_equal(p.media_white_point, ((0.964202880859375, 1.0, 0.8249053955078125), (0.3457029219802284, 0.3585375327567059, 1.0)))
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assert_truncated_tuple_equal((p.media_white_point_temperature,), (5000.722328847392,))
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self.assertEqual(p.model, 'IEC 61966-2-1 Default RGB Colour Space - sRGB')
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self.assertEqual(p.pcs, 'XYZ')
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self.assertEqual(p.perceptual_rendering_intent_gamut, None)
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self.assertEqual(p.product_copyright, 'Copyright International Color Consortium, 2009')
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self.assertEqual(p.product_desc, 'sRGB IEC61966-2-1 black scaled')
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self.assertEqual(p.product_description, 'sRGB IEC61966-2-1 black scaled')
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self.assertEqual(p.product_manufacturer, '')
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self.assertEqual(p.product_model, 'IEC 61966-2-1 Default RGB Colour Space - sRGB')
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self.assertEqual(p.profile_description, 'sRGB IEC61966-2-1 black scaled')
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self.assertEqual(p.profile_id, b')\xf8=\xde\xaf\xf2U\xaexB\xfa\xe4\xca\x839\r')
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assert_truncated_tuple_equal(p.red_colorant, ((0.436065673828125, 0.2224884033203125, 0.013916015625), (0.6484536316398539, 0.3308524880306778, 0.2224884033203125)))
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assert_truncated_tuple_equal(p.red_primary, ((0.43606566581047446, 0.22248840582960838, 0.013916015621759925), (0.6484536250319214, 0.3308524944738204, 0.22248840582960838)))
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self.assertEqual(p.rendering_intent, 0)
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self.assertEqual(p.saturation_rendering_intent_gamut, None)
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self.assertEqual(p.screening_description, None)
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self.assertEqual(p.target, None)
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self.assertEqual(p.technology, 'CRT ')
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self.assertEqual(p.version, 2.0)
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self.assertEqual(p.viewing_condition, 'Reference Viewing Condition in IEC 61966-2-1')
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self.assertEqual(p.xcolor_space, 'RGB ')
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if __name__ == '__main__':
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unittest.main()
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