148 lines
4.9 KiB
Python
Executable File
148 lines
4.9 KiB
Python
Executable File
#!/usr/bin/python
|
|
|
|
import unittest
|
|
import math
|
|
|
|
#import logging
|
|
#logging.basicConfig(level = logging.DEBUG)
|
|
|
|
from gi.repository import Vips
|
|
|
|
# an expanding zip ... if either of the args is a scalar or a one-element list,
|
|
# duplicate it down the other side
|
|
def zip_expand(x, y):
|
|
# handle singleton list case
|
|
if isinstance(x, list) and len(x) == 1:
|
|
x = x[0]
|
|
if isinstance(y, list) and len(y) == 1:
|
|
y = y[0]
|
|
|
|
if isinstance(x, list) and isinstance(y, list):
|
|
return list(zip(x, y))
|
|
elif isinstance(x, list):
|
|
return [[i, y] for i in x]
|
|
elif isinstance(y, list):
|
|
return [[x, j] for j in y]
|
|
else:
|
|
return [[x, y]]
|
|
|
|
class TestCreate(unittest.TestCase):
|
|
# test a pair of things which can be lists for approx. equality
|
|
def assertAlmostEqualObjects(self, a, b, places = 4, msg = ''):
|
|
# print 'assertAlmostEqualObjects %s = %s' % (a, b)
|
|
for x, y in zip_expand(a, b):
|
|
self.assertAlmostEqual(x, y, places = places, msg = msg)
|
|
|
|
def test_black(self):
|
|
im = Vips.Image.black(100, 100)
|
|
|
|
self.assertEqual(im.width, 100)
|
|
self.assertEqual(im.height, 100)
|
|
self.assertEqual(im.format, Vips.BandFormat.UCHAR)
|
|
self.assertEqual(im.bands, 1)
|
|
for i in range (0, 100):
|
|
pixel = im.getpoint(i, i)
|
|
self.assertEqual(len(pixel), 1)
|
|
self.assertEqual(pixel[0], 0)
|
|
|
|
im = Vips.Image.black(100, 100, bands = 3)
|
|
|
|
self.assertEqual(im.width, 100)
|
|
self.assertEqual(im.height, 100)
|
|
self.assertEqual(im.format, Vips.BandFormat.UCHAR)
|
|
self.assertEqual(im.bands, 3)
|
|
for i in range (0, 100):
|
|
pixel = im.getpoint(i, i)
|
|
self.assertEqual(len(pixel), 3)
|
|
self.assertAlmostEqualObjects(pixel, [0, 0, 0])
|
|
|
|
def test_buildlut(self):
|
|
M = Vips.Image.new_from_array([[0, 0],
|
|
[255, 100]])
|
|
lut = M.buildlut()
|
|
self.assertEqual(lut.width, 256)
|
|
self.assertEqual(lut.height, 1)
|
|
self.assertEqual(lut.bands, 1)
|
|
p = lut.getpoint(0, 0)
|
|
self.assertEqual(p[0], 0.0)
|
|
p = lut.getpoint(255, 0)
|
|
self.assertEqual(p[0], 100.0)
|
|
p = lut.getpoint(10, 0)
|
|
self.assertEqual(p[0], 100 * 10.0 / 255.0)
|
|
|
|
M = Vips.Image.new_from_array([[0, 0, 100],
|
|
[255, 100, 0],
|
|
[128, 10, 90]])
|
|
lut = M.buildlut()
|
|
self.assertEqual(lut.width, 256)
|
|
self.assertEqual(lut.height, 1)
|
|
self.assertEqual(lut.bands, 2)
|
|
p = lut.getpoint(0, 0)
|
|
self.assertAlmostEqualObjects(p, [0.0, 100.0])
|
|
p = lut.getpoint(64, 0)
|
|
self.assertAlmostEqualObjects(p, [5.0, 95.0])
|
|
|
|
def test_eye(self):
|
|
im = Vips.Image.eye(100, 90)
|
|
self.assertEqual(im.width, 100)
|
|
self.assertEqual(im.height, 90)
|
|
self.assertEqual(im.bands, 1)
|
|
self.assertEqual(im.format, Vips.BandFormat.FLOAT)
|
|
self.assertEqual(im.max(), 1.0)
|
|
self.assertEqual(im.min(), -1.0)
|
|
|
|
im = Vips.Image.eye(100, 90, uchar = True)
|
|
self.assertEqual(im.width, 100)
|
|
self.assertEqual(im.height, 90)
|
|
self.assertEqual(im.bands, 1)
|
|
self.assertEqual(im.format, Vips.BandFormat.UCHAR)
|
|
self.assertEqual(im.max(), 255.0)
|
|
self.assertEqual(im.min(), 0.0)
|
|
|
|
def test_fractsurf(self):
|
|
im = Vips.Image.fractsurf(100, 90, 2.5)
|
|
self.assertEqual(im.width, 100)
|
|
self.assertEqual(im.height, 90)
|
|
self.assertEqual(im.bands, 1)
|
|
self.assertEqual(im.format, Vips.BandFormat.FLOAT)
|
|
|
|
def test_gaussmat(self):
|
|
im = Vips.Image.gaussmat(1, 0.1)
|
|
self.assertEqual(im.width, 7)
|
|
self.assertEqual(im.height, 7)
|
|
self.assertEqual(im.bands, 1)
|
|
self.assertEqual(im.format, Vips.BandFormat.DOUBLE)
|
|
self.assertEqual(im.max(), 20)
|
|
total = im.avg() * im.width * im.height
|
|
scale = im.get("scale")
|
|
self.assertEqual(total, scale)
|
|
p = im.getpoint(im.width / 2, im.height / 2)
|
|
self.assertEqual(p[0], 20.0)
|
|
|
|
im = Vips.Image.gaussmat(1, 0.1,
|
|
separable = True, precision = "float")
|
|
self.assertEqual(im.width, 7)
|
|
self.assertEqual(im.height, 1)
|
|
self.assertEqual(im.bands, 1)
|
|
self.assertEqual(im.format, Vips.BandFormat.DOUBLE)
|
|
self.assertEqual(im.max(), 1.0)
|
|
total = im.avg() * im.width * im.height
|
|
scale = im.get("scale")
|
|
self.assertEqual(total, scale)
|
|
p = im.getpoint(im.width / 2, im.height / 2)
|
|
self.assertEqual(p[0], 1.0)
|
|
|
|
def test_gaussnoise(self):
|
|
im = Vips.Image.gaussnoise(100, 90)
|
|
self.assertEqual(im.width, 100)
|
|
self.assertEqual(im.height, 90)
|
|
self.assertEqual(im.bands, 1)
|
|
self.assertEqual(im.format, Vips.BandFormat.FLOAT)
|
|
|
|
|
|
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|