def test_set_lut():
# Arrange
lb = ImageMorph.LutBuilder(op_name="corner")
lut = lb.build_lut()
mop = ImageMorph.MorphOp()
# Act
mop.set_lut(lut)
# Assert
assert mop.lut == lut
def test_set_lut(self):
# Arrange
lb = ImageMorph.LutBuilder(op_name='corner')
lut = lb.build_lut()
mop = ImageMorph.MorphOp()
# Act
mop.set_lut(lut)
# Assert
self.assertEqual(mop.lut, lut)
def processImage(path):
im = Image.open(path)
print("Path:", path)
print("Format:", im.format)
print("Dimensions:", im.size)
print("Mode:", im.mode)
# Gerando níveis de dimensões diferentes
dimensions = []
# Utilizei potencias de dois por arbitrariedade mesmo
for j in [2**i for i in range(5)]:
dimensions.append((im.width / j, im.height / j))
print(dimensions[-1])
im_all = []
for (width, height) in dimensions:
aux = im.resize((int(width), int(height)))
im_all.append(aux.resize((im.width, im.height)))
map_char = []
for im in im_all:
for it in im_all:
if im != it:
map_char.append(ImageChops.difference(im, it))
result = map_char[0]
for img in map_char[1:]:
result = ImageChops.add(result, img, scale=2.0)
# get an image
# make a blank image for the text, initialized to transparent text color
txt = Image.new('RGBA', im.size, (255, 255, 255, 0))
# get a font
fnt = ImageFont.truetype('./Roboto-Black.ttf', 30)
# get a drawing context
d = ImageDraw.Draw(txt)
grayscale = result.convert('L')
im = Image.open(path).convert('RGBA')
out = im
for i in range(1, 35):
_, maxima = grayscale.getextrema()
mask_image = grayscale.point(lambda i: 255 if i == maxima else 0)
mask = ImageMorph.MorphOp(lut=ImageMorph.LutBuilder(
patterns=["1:(000 010 000)->1"]).build_lut())
match = mask.match(mask_image)
d.text(match[0], str(i), font=fnt, fill=(255, 255, 255, 200))
out = Image.alpha_composite(im, txt)
supress = Image.new('L', (20, 20), "black")
(w, h) = match[0]
grayscale.paste(supress, (w - 10, h - 10))
out.show()
def test_non_binary_images(self):
im = hopper('RGB')
mop = ImageMorph.MorphOp(op_name="erosion8")
self.assertRaises(Exception, mop.apply, im)
self.assertRaises(Exception, mop.match, im)
self.assertRaises(Exception, mop.get_on_pixels, im)
def test_load_invalid_mrl(self):
# Arrange
invalid_mrl = 'Tests/images/hopper.png'
mop = ImageMorph.MorphOp()
# Act / Assert
self.assertRaises(Exception, mop.load_lut, invalid_mrl)
def test_corner():
# Create a corner detector pattern
mop = ImageMorph.MorphOp(
patterns=["1:(... ... ...)->0", "4:(00. 01. ...)->1"])
count, Aout = mop.apply(A)
assert count == 5
assert_img_equal_img_string(
Aout,
"""
.......
.......
..1.1..
.......
..1.1..
.......
.......
""",
)
# Test the coordinate counting with the same operator
coords = mop.match(A)
assert len(coords) == 4
assert tuple(coords) == ((2, 2), (4, 2), (2, 4), (4, 4))
coords = mop.get_on_pixels(Aout)
assert len(coords) == 4
assert tuple(coords) == ((2, 2), (4, 2), (2, 4), (4, 4))
def test_lut(self):
for op in ('corner', 'dilation4', 'dilation8', 'erosion4', 'erosion8',
'edge'):
lb = ImageMorph.LutBuilder(op_name=op)
lut = lb.build_lut()
with open('Tests/images/%s.lut' % op, 'rb') as f:
self.assertEqual(lut, bytearray(f.read()))
def test_corner(self):
# Create a corner detector pattern
mop = ImageMorph.MorphOp(
patterns=['1:(... ... ...)->0', '4:(00. 01. ...)->1'])
count, Aout = mop.apply(self.A)
self.assertEqual(count, 5)
self.assert_img_equal_img_string(
Aout, """
.......
.......
..1.1..
.......
..1.1..
.......
.......
""")
# Test the coordinate counting with the same operator
coords = mop.match(self.A)
self.assertEqual(len(coords), 4)
self.assertEqual(tuple(coords), ((2, 2), (4, 2), (2, 4), (4, 4)))
coords = mop.get_on_pixels(Aout)
self.assertEqual(len(coords), 4)
self.assertEqual(tuple(coords), ((2, 2), (4, 2), (2, 4), (4, 4)))
def create_lut(self):
for op in ('corner', 'dilation4', 'dilation8', 'erosion4', 'erosion8',
'edge'):
lb = ImageMorph.LutBuilder(op_name=op)
lut = lb.build_lut()
with open('Tests/images/%s.lut' % op, 'wb') as f:
f.write(lut)
def create_lut():
for op in ("corner", "dilation4", "dilation8", "erosion4", "erosion8",
"edge"):
lb = ImageMorph.LutBuilder(op_name=op)
lut = lb.build_lut()
with open("Tests/images/%s.lut" % op, "wb") as f:
f.write(lut)
def test_pattern_syntax_error(self):
# Arrange
lb = ImageMorph.LutBuilder(op_name='corner')
new_patterns = ['a pattern with a syntax error']
lb.add_patterns(new_patterns)
# Act / Assert
self.assertRaises(Exception, lb.build_lut)
def test_lut(self):
for op in ("corner", "dilation4", "dilation8", "erosion4", "erosion8", "edge"):
lb = ImageMorph.LutBuilder(op_name=op)
self.assertIsNone(lb.get_lut())
lut = lb.build_lut()
with open("Tests/images/%s.lut" % op, "rb") as f:
self.assertEqual(lut, bytearray(f.read()))
def test_load_invalid_mrl():
# Arrange
invalid_mrl = "Tests/images/hopper.png"
mop = ImageMorph.MorphOp()
# Act / Assert
with pytest.raises(Exception) as e:
mop.load_lut(invalid_mrl)
assert str(e.value) == "Wrong size operator file!"
def test_load_invalid_mrl(self):
# Arrange
invalid_mrl = 'Tests/images/hopper.png'
mop = ImageMorph.MorphOp()
# Act / Assert
with self.assertRaises(Exception) as e:
mop.load_lut(invalid_mrl)
self.assertEqual(str(e.exception), 'Wrong size operator file!')
def test_lut():
for op in ("corner", "dilation4", "dilation8", "erosion4", "erosion8",
"edge"):
lb = ImageMorph.LutBuilder(op_name=op)
assert lb.get_lut() is None
lut = lb.build_lut()
with open("Tests/images/%s.lut" % op, "rb") as f:
assert lut == bytearray(f.read())
def count_regions(key):
image=draw_disk(key)
on_pixels=ImageMorph.MorphOp().get_on_pixels(image.convert('L'))
image=image.convert('RGB')
region_count=0
for x,y in on_pixels:
if image.getpixel((x,y))!=(0,0,0):
ImageDraw.floodfill(image,(x,y),(0,0,0))
region_count+=1
return region_count
def test_no_operator_loaded(self):
mop = ImageMorph.MorphOp()
with self.assertRaises(Exception) as e:
mop.apply(None)
self.assertEqual(str(e.exception), 'No operator loaded')
with self.assertRaises(Exception) as e:
mop.match(None)
self.assertEqual(str(e.exception), 'No operator loaded')
with self.assertRaises(Exception) as e:
mop.save_lut(None)
self.assertEqual(str(e.exception), 'No operator loaded')
def test_no_operator_loaded():
mop = ImageMorph.MorphOp()
with pytest.raises(Exception) as e:
mop.apply(None)
assert str(e.value) == "No operator loaded"
with pytest.raises(Exception) as e:
mop.match(None)
assert str(e.value) == "No operator loaded"
with pytest.raises(Exception) as e:
mop.save_lut(None)
assert str(e.value) == "No operator loaded"
def test_pattern_syntax_error():
# Arrange
lb = ImageMorph.LutBuilder(op_name="corner")
new_patterns = ["a pattern with a syntax error"]
lb.add_patterns(new_patterns)
# Act / Assert
with pytest.raises(Exception) as e:
lb.build_lut()
assert str(
e.value) == 'Syntax error in pattern "a pattern with a syntax error"'
def test_roundtrip_mrl(self):
# Arrange
tempfile = self.tempfile('temp.mrl')
mop = ImageMorph.MorphOp(op_name='corner')
initial_lut = mop.lut
# Act
mop.save_lut(tempfile)
mop.load_lut(tempfile)
# Act / Assert
self.assertEqual(mop.lut, initial_lut)
def test_pattern_syntax_error(self):
# Arrange
lb = ImageMorph.LutBuilder(op_name='corner')
new_patterns = ['a pattern with a syntax error']
lb.add_patterns(new_patterns)
# Act / Assert
with self.assertRaises(Exception) as e:
lb.build_lut()
self.assertEqual(
str(e.exception),
'Syntax error in pattern "a pattern with a syntax error"')
def test_roundtrip_mrl(tmp_path):
# Arrange
tempfile = str(tmp_path / "temp.mrl")
mop = ImageMorph.MorphOp(op_name="corner")
initial_lut = mop.lut
# Act
mop.save_lut(tempfile)
mop.load_lut(tempfile)
# Act / Assert
assert mop.lut == initial_lut
def test_incorrect_mode():
im = hopper("RGB")
mop = ImageMorph.MorphOp(op_name="erosion8")
with pytest.raises(ValueError) as e:
mop.apply(im)
assert str(e.value) == "Image mode must be L"
with pytest.raises(ValueError) as e:
mop.match(im)
assert str(e.value) == "Image mode must be L"
with pytest.raises(ValueError) as e:
mop.get_on_pixels(im)
assert str(e.value) == "Image mode must be L"
def test_non_binary_images():
im = hopper("RGB")
mop = ImageMorph.MorphOp(op_name="erosion8")
with pytest.raises(Exception) as e:
mop.apply(im)
assert str(e.value) == "Image must be binary, meaning it must use mode L"
with pytest.raises(Exception) as e:
mop.match(im)
assert str(e.value) == "Image must be binary, meaning it must use mode L"
with pytest.raises(Exception) as e:
mop.get_on_pixels(im)
assert str(e.value) == "Image must be binary, meaning it must use mode L"
def test_erosion4(self):
# erosion4
mop = ImageMorph.MorphOp(op_name='dilation4')
count, Aout = mop.apply(self.A)
self.assertEqual(count, 12)
self.assert_img_equal_img_string(
Aout, """
.......
..111..
.11111.
.11111.
.11111.
..111..
.......
""")
def test_edge(self):
# edge
mop = ImageMorph.MorphOp(op_name='edge')
count, Aout = mop.apply(self.A)
self.assertEqual(count, 1)
self.assert_img_equal_img_string(
Aout, """
.......
.......
..111..
..1.1..
..111..
.......
.......
""")
def test_add_patterns(self):
# Arrange
lb = ImageMorph.LutBuilder(op_name='corner')
self.assertEqual(lb.patterns,
['1:(... ... ...)->0', '4:(00. 01. ...)->1'])
new_patterns = ['M:(00. 01. ...)->1', 'N:(00. 01. ...)->1']
# Act
lb.add_patterns(new_patterns)
# Assert
self.assertEqual(lb.patterns, [
'1:(... ... ...)->0', '4:(00. 01. ...)->1', 'M:(00. 01. ...)->1',
'N:(00. 01. ...)->1'
])
def test_dialation8(self):
# dialation8
mop = ImageMorph.MorphOp(op_name='dilation8')
count, Aout = mop.apply(self.A)
self.assertEqual(count, 16)
self.assert_img_equal_img_string(
Aout, """
.......
.11111.
.11111.
.11111.
.11111.
.11111.
.......
""")
def test_erosion8(self):
# erosion8
mop = ImageMorph.MorphOp(op_name='erosion8')
count, Aout = mop.apply(self.A)
self.assertEqual(count, 8)
self.assert_img_equal_img_string(
Aout, """
.......
.......
.......
...1...
.......
.......
.......
""")
def test_wrong_mode():
lut = ImageMorph.LutBuilder(op_name="corner").build_lut()
imrgb = Image.new("RGB", (10, 10))
iml = Image.new("L", (10, 10))
with pytest.raises(RuntimeError):
_imagingmorph.apply(bytes(lut), imrgb.im.id, iml.im.id)
with pytest.raises(RuntimeError):
_imagingmorph.apply(bytes(lut), iml.im.id, imrgb.im.id)
with pytest.raises(RuntimeError):
_imagingmorph.match(bytes(lut), imrgb.im.id)
# Should not raise
_imagingmorph.match(bytes(lut), iml.im.id)
