def test_small_cascade():
color_edges = lab.color_filter_from_greyscale_filter(lab.edges)
color_inverted = lab.color_filter_from_greyscale_filter(lab.inverted)
color_blur_5 = lab.color_filter_from_greyscale_filter(lab.make_blur_filter(5))
im = lab.load_color_image('test_images/centered_pixel.png')
expected = {
'height': 11,
'width': 11,
'pixels': [(255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255),
(255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255),
(255, 255, 255), (255, 255, 255), (254, 250, 252), (254, 244, 248), (253, 240, 246), (253, 240, 246), (253, 240, 246), (254, 244, 248), (254, 250, 252), (255, 255, 255), (255, 255, 255),
(255, 255, 255), (255, 255, 255), (254, 244, 248), (253, 238, 244), (252, 227, 238), (252, 227, 238), (252, 227, 238), (253, 238, 244), (254, 244, 248), (255, 255, 255), (255, 255, 255),
(255, 255, 255), (255, 255, 255), (253, 240, 246), (252, 227, 238), (250, 211, 228), (250, 211, 228), (250, 211, 228), (252, 227, 238), (253, 240, 246), (255, 255, 255), (255, 255, 255),
(255, 255, 255), (255, 255, 255), (253, 240, 246), (252, 227, 238), (250, 211, 228), (250, 211, 228), (250, 211, 228), (252, 227, 238), (253, 240, 246), (255, 255, 255), (255, 255, 255),
(255, 255, 255), (255, 255, 255), (253, 240, 246), (252, 227, 238), (250, 211, 228), (250, 211, 228), (250, 211, 228), (252, 227, 238), (253, 240, 246), (255, 255, 255), (255, 255, 255),
(255, 255, 255), (255, 255, 255), (254, 244, 248), (253, 238, 244), (252, 227, 238), (252, 227, 238), (252, 227, 238), (253, 238, 244), (254, 244, 248), (255, 255, 255), (255, 255, 255),
(255, 255, 255), (255, 255, 255), (254, 250, 252), (254, 244, 248), (253, 240, 246), (253, 240, 246), (253, 240, 246), (254, 244, 248), (254, 250, 252), (255, 255, 255), (255, 255, 255),
(255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255),
(255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255), (255, 255, 255)]
}
f_cascade = lab.filter_cascade([color_edges, color_inverted, color_blur_5])
assert callable(f_cascade), 'filter_cascade should return a function.'
result = f_cascade(im)
compare_color_images(result, expected)
def test_cascades(self):
cascade0 = [
self.color_edges,
lab.color_filter_from_greyscale_filter(lab.make_sharpen_filter(3))
]
cascade1 = [
lab.color_filter_from_greyscale_filter(lab.make_blur_filter(5)),
self.color_edges,
lab.color_filter_from_greyscale_filter(lab.make_sharpen_filter(3))
]
cascade3 = [self.color_edges] * 5 + [self.color_inverted]
for fname in ('tree', ):
for cix, cascade in enumerate([cascade0, cascade1]):
inpfile = os.path.join(TEST_DIRECTORY, 'test_images',
f'{fname}.png')
expfile = os.path.join(TEST_DIRECTORY, 'test_results',
f'{fname}_cascade{cix}.png')
im = lab.load_color_image(inpfile)
oim = object_hash(im)
f_cascade = lab.filter_cascade(cascade)
self.assertTrue(callable(f_cascade),
'filter_cascade should return a function.')
result = f_cascade(im)
expected = lab.load_color_image(expfile)
self.assertEqual(
object_hash(im), oim,
'Be careful not to modify the original image!')
self.compare_color_images(result, expected)
def test_cascade_2(self):
im = lab.load_color_image('test_images/frog.png')
filter1 = lab.color_filter_from_greyscale_filter(lab.edges)
filter2 = lab.color_filter_from_greyscale_filter(
lab.make_blur_filter(5))
filt = lab.filter_cascade([filter1, filter1, filter2, filter1])
result = filt(im)
lab.save_color_image(result,
'/Users/yaxinliu/Downloads/lab1/Cascade.png')
def test_blur_filter_2(self):
blur_filter = lab.make_blur_filter(9)
self.assertTrue(callable(blur_filter),
'make_blur_filter should return a function.')
color_blur = lab.color_filter_from_greyscale_filter(blur_filter)
im = lab.load_color_image('test_images/python.png')
result = color_blur(im)
lab.save_color_image(
result, '/Users/yaxinliu/Downloads/lab1/Make_Blurred.png')
def test_sharpen_filters_1(self):
sharpen_filter = lab.make_sharpen_filter(7)
self.assertTrue(callable(sharpen_filter),
'make_sharpen_filter should return a function.')
color_sharpen = lab.color_filter_from_greyscale_filter(sharpen_filter)
im = lab.load_color_image('test_images/sparrowchick.png')
result = color_sharpen(im)
lab.save_color_image(
result, '/Users/yaxinliu/Downloads/lab1/Make_Sharpen.png')
def test_blur_filter_1(self):
blur_filter = lab.make_blur_filter(3)
self.assertTrue(callable(blur_filter),
'make_blur_filter should return a function.')
color_blur = lab.color_filter_from_greyscale_filter(blur_filter)
im = lab.load_color_image('test_images/centered_pixel.png')
result = color_blur(im)
expected = {
'height':
11,
'width':
11,
'pixels': [(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(245, 182, 193), (245, 182, 193), (245, 182, 193),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (245, 182, 193),
(245, 182, 193), (245, 182, 193), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (245, 182, 193), (245, 182, 193),
(245, 182, 193), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198)]
}
self.compare_color_images(result, expected)
def test_color_filter_images(fname, filter_info):
filt, filt_name = filter_info
inpfile = os.path.join(TEST_DIRECTORY, 'test_images', f'{fname}.png')
expfile = os.path.join(TEST_DIRECTORY, 'test_results', f'{fname}_{filt_name}.png')
im = lab.load_color_image(inpfile)
oim = object_hash(im)
color_filter = lab.color_filter_from_greyscale_filter(filt)
assert callable(color_filter), 'color_filter_from_greyscale_filter should return a function.'
result = color_filter(im)
expected = lab.load_color_image(expfile)
assert object_hash(im) == oim, 'Be careful not to modify the original image!'
compare_color_images(result, expected)
def test_sharpen_filter_images(fname, ker_size):
inpfile = os.path.join(TEST_DIRECTORY, 'test_images', f'{fname}.png')
expfile = os.path.join(TEST_DIRECTORY, 'test_results', f'{fname}_sharpened{ker_size}.png')
im = lab.load_color_image(inpfile)
oim = object_hash(im)
sharpen_filter = lab.make_sharpen_filter(ker_size)
assert callable(sharpen_filter), 'make_sharpen_filter should return a function.'
color_sharpen = lab.color_filter_from_greyscale_filter(sharpen_filter)
result = color_sharpen(im)
expected = lab.load_color_image(expfile)
assert object_hash(im) == oim, 'Be careful not to modify the original image!'
compare_color_images(result, expected)
def test_cascades(cascade, image):
color_edges = lab.color_filter_from_greyscale_filter(lab.edges)
color_inverted = lab.color_filter_from_greyscale_filter(lab.inverted)
cascade0 = [color_edges,
lab.color_filter_from_greyscale_filter(lab.make_sharpen_filter(3))]
cascade1 = [lab.color_filter_from_greyscale_filter(lab.make_blur_filter(5)),
color_edges,
lab.color_filter_from_greyscale_filter(lab.make_sharpen_filter(3)),
lambda im: {k: ([(i[1], i[0], i[2]) for i in v] if isinstance(v, list) else v) for k, v in im.items()}]
cascade2 = [color_edges]*5 + [color_inverted]
cascades = [cascade0, cascade1, cascade2]
inpfile = os.path.join(TEST_DIRECTORY, 'test_images', f'{image}.png')
expfile = os.path.join(TEST_DIRECTORY, 'test_results', f'{image}_cascade{cascade}.png')
im = lab.load_color_image(inpfile)
oim = object_hash(im)
f_cascade = lab.filter_cascade(cascades[cascade])
assert callable(f_cascade), 'filter_cascade should return a function.'
result = f_cascade(im)
expected = lab.load_color_image(expfile)
assert object_hash(im) == oim, 'Be careful not to modify the original image!'
compare_color_images(result, expected)
def test_color_filter_inverted(self):
im = lab.load_color_image('test_images/centered_pixel.png')
color_inverted = lab.color_filter_from_greyscale_filter(lab.inverted)
self.assertTrue(
callable(color_inverted),
'color_filter_from_greyscale_filter should return a function.')
result = color_inverted(im)
expected = {
'height':
11,
'width':
11,
'pixels': [(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(2, 2, 106), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57)]
}
self.compare_color_images(result, expected)
def test_color_filter_inverted():
im = lab.load_color_image(os.path.join(TEST_DIRECTORY, 'test_images', 'centered_pixel.png'))
color_inverted = lab.color_filter_from_greyscale_filter(lab.inverted)
assert callable(color_inverted), 'color_filter_from_greyscale_filter should return a function.'
result = color_inverted(im)
expected = {
'height': 11,
'width': 11,
'pixels': [(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (2, 2, 106), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57),
(11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57), (11, 82, 57)]
}
compare_color_images(result, expected)
def test_color_filter_edges():
im = lab.load_color_image('test_images/centered_pixel.png')
color_edges = lab.color_filter_from_greyscale_filter(lab.edges)
assert callable(color_edges), 'color_filter_from_greyscale_filter should return a function.'
result = color_edges(im)
expected = {
'height': 11,
'width': 11,
'pixels': [(0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0),
(0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0),
(0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0),
(0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0),
(0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (13, 113, 69), (18, 160, 98), (13, 113, 69), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0),
(0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (18, 160, 98), (0, 0, 0), (18, 160, 98), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0),
(0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (13, 113, 69), (18, 160, 98), (13, 113, 69), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0),
(0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0),
(0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0),
(0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0),
(0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0), (0, 0, 0)],
}
compare_color_images(result, expected)
def test_blur_filter():
blur_filter = lab.make_blur_filter(3)
assert callable(blur_filter), 'make_blur_filter should return a function.'
color_blur = lab.color_filter_from_greyscale_filter(blur_filter)
im = lab.load_color_image(os.path.join(TEST_DIRECTORY, 'test_images', 'centered_pixel.png'))
result = color_blur(im)
expected = {
'height': 11,
'width': 11,
'pixels': [(244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (245, 182, 193), (245, 182, 193), (245, 182, 193), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (245, 182, 193), (245, 182, 193), (245, 182, 193), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (245, 182, 193), (245, 182, 193), (245, 182, 193), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198),
(244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198), (244, 173, 198)]
}
compare_color_images(result, expected)
def test_sharpen_filters(self):
for fname in ('construct', 'bluegill'):
for ker_size in {3, 5}:
with self.subTest(f=fname):
inpfile = os.path.join(TEST_DIRECTORY, 'test_images',
f'{fname}.png')
expfile = os.path.join(TEST_DIRECTORY, 'test_results',
f'{fname}_sharpened{ker_size}.png')
im = lab.load_color_image(inpfile)
oim = object_hash(im)
sharpened_filter = lab.make_sharpen_filter(ker_size)
self.assertTrue(
callable(sharpened_filter),
'make_sharpen_filter should return a function.')
color_sharpen = lab.color_filter_from_greyscale_filter(
sharpened_filter)
result = color_sharpen(im)
expected = lab.load_color_image(expfile)
self.assertEqual(
object_hash(im), oim,
'Be careful not to modify the original image!')
self.compare_color_images(result, expected)
def test_color_filters(self):
for fname in ('frog', 'tree'):
for filt, filt_name in {(lab.edges, 'edges'),
(lab.inverted, 'inverted')}:
with self.subTest(f=fname):
inpfile = os.path.join(TEST_DIRECTORY, 'test_images',
f'{fname}.png')
expfile = os.path.join(TEST_DIRECTORY, 'test_results',
f'{fname}_{filt_name}.png')
im = lab.load_color_image(inpfile)
oim = object_hash(im)
color_filter = lab.color_filter_from_greyscale_filter(filt)
self.assertTrue(
callable(color_filter),
'color_filter_from_greyscale_filter should return a function.'
)
result = color_filter(im)
expected = lab.load_color_image(expfile)
self.assertEqual(
object_hash(im), oim,
'Be careful not to modify the original image!')
self.compare_color_images(result, expected)
def test_color_filter_inverted_2(self):
im = lab.load_color_image('test_images/cat.png')
color_inverted = lab.color_filter_from_greyscale_filter(lab.inverted)
result = color_inverted(im)
lab.save_color_image(
result, '/Users/yaxinliu/Downloads/lab1/ColorFilterInverted.png')
def setUp(self):
self.color_edges = lab.color_filter_from_greyscale_filter(lab.edges)
self.color_inverted = lab.color_filter_from_greyscale_filter(
lab.inverted)
self.color_blur_5 = lab.color_filter_from_greyscale_filter(
lab.make_blur_filter(5))
