1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
from PIL import Image
def test_white():
with Image.open("Tests/images/lab.tif") as i:
i.load()
assert i.mode == "LAB"
assert i.getbands() == ("L", "A", "B")
k = i.getpixel((0, 0))
L = i.getdata(0)
a = i.getdata(1)
b = i.getdata(2)
assert k == (255, 128, 128)
assert list(L) == [255] * 100
assert list(a) == [128] * 100
assert list(b) == [128] * 100
def test_green():
# l= 50 (/100), a = -100 (-128 .. 128) b=0 in PS
# == RGB: 0, 152, 117
with Image.open("Tests/images/lab-green.tif") as i:
k = i.getpixel((0, 0))
assert k == (128, 28, 128)
def test_red():
# l= 50 (/100), a = 100 (-128 .. 128) b=0 in PS
# == RGB: 255, 0, 124
with Image.open("Tests/images/lab-red.tif") as i:
k = i.getpixel((0, 0))
assert k == (128, 228, 128)
|
