115 lines
3.9 KiB
Python
Executable File
115 lines
3.9 KiB
Python
Executable File
#!/usr/bin/python
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import unittest
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import math
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#import logging
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#logging.basicConfig(level = logging.DEBUG)
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from gi.repository import Vips
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from vips8 import vips
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unsigned_formats = [Vips.BandFormat.UCHAR,
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Vips.BandFormat.USHORT,
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Vips.BandFormat.UINT]
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signed_formats = [Vips.BandFormat.CHAR,
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Vips.BandFormat.SHORT,
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Vips.BandFormat.INT]
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float_formats = [Vips.BandFormat.FLOAT,
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Vips.BandFormat.DOUBLE]
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complex_formats = [Vips.BandFormat.COMPLEX,
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Vips.BandFormat.DPCOMPLEX]
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int_formats = unsigned_formats + signed_formats
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noncomplex_formats = int_formats + float_formats
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all_formats = int_formats + float_formats + complex_formats
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# an expanding zip ... if either of the args is not a list, duplicate it down
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# the other
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def zip_expand(x, y):
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if isinstance(x, list) and isinstance(y, list):
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return zip(x, y)
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elif isinstance(x, list):
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return [[i, y] for i in x]
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elif isinstance(y, list):
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return [[x, j] for j in y]
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else:
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return [[x, y]]
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class TestConversion(unittest.TestCase):
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# test a pair of things which can be lists for approx. equality
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def assertAlmostEqualObjects(self, a, b, places = 4, msg = ''):
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#print 'assertAlmostEqualObjects %s = %s' % (a, b)
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for x, y in zip_expand(a, b):
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self.assertAlmostEqual(x, y, places = places, msg = msg)
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# run a function on an image and on a single pixel, the results
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# should match
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def run_cmp(self, message, im, x, y, fn):
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a = im.getpoint(x, y)
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v1 = fn(a)
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im2 = fn(im)
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v2 = im2.getpoint(x, y)
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self.assertAlmostEqualObjects(v1, v2, msg = message)
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# run a function on a pair of images and on a pair of pixels, the results
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# should match
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def run_cmp2(self, message, left, right, x, y, fn):
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a = left.getpoint(x, y)
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b = right.getpoint(x, y)
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v1 = fn(a, b)
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after = fn(left, right)
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v2 = after.getpoint(x, y)
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self.assertAlmostEqualObjects(v1, v2, msg = message)
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# run a function on a pair of images
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# 50,50 and 10,10 should have different values on the test image
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def run_test2(self, message, left, right, fn):
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self.run_cmp2(message, left, right, 50, 50, fn)
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self.run_cmp2(message, left, right, 10, 10, fn)
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# run a function on an image,
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# 50,50 and 10,10 should have different values on the test image
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def run_testunary(self, message, im, fn):
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self.run_cmp(message, im, 50, 50, fn)
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self.run_cmp(message, im, 10, 10, fn)
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def run_unary(self, images, fn, fmt = all_formats):
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[self.run_testunary(fn.func_name + ' image', x.cast(y), fn)
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for x in images for y in fmt]
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def setUp(self):
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im = Vips.Image.mask_ideal(100, 100, 0.5, reject = True, optical = True)
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self.colour = im * [1, 2, 3] + [2, 3, 4]
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self.mono = self.colour.extract_band(1)
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self.all_images = [self.mono, self.colour]
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def test_band_and(self):
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def band_and(x):
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if isinstance(x, Vips.Image):
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return x.bandbool(Vips.OperationBoolean.AND)
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else:
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return [reduce(lambda a, b: int(a) & int(b), x)]
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self.run_unary([self.colour], band_and, fmt = int_formats)
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def test_band_or(self):
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def band_or(x):
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if isinstance(x, Vips.Image):
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return x.bandbool(Vips.OperationBoolean.OR)
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else:
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return [reduce(lambda a, b: int(a) | int(b), x)]
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self.run_unary([self.colour], band_or, fmt = int_formats)
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def test_band_eor(self):
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def band_eor(x):
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if isinstance(x, Vips.Image):
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return x.bandbool(Vips.OperationBoolean.EOR)
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else:
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return [reduce(lambda a, b: int(a) ^ int(b), x)]
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self.run_unary([self.colour], band_eor, fmt = int_formats)
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if __name__ == '__main__':
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unittest.main()
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