mirror of
https://github.com/python-pillow/Pillow.git
synced 2024-09-21 11:28:58 +03:00
5e676ea0bd
Conflicts: Tests/bench_cffi_access.py Tests/test_file_palm.py Tests/test_format_hsv.py Tests/test_image_putdata.py Tests/test_locale.py Tests/test_mode_i16.py
170 lines
5.5 KiB
Python
170 lines
5.5 KiB
Python
from helper import unittest, PillowTestCase, hopper
|
|
|
|
from PIL import Image
|
|
|
|
import colorsys
|
|
import itertools
|
|
|
|
|
|
class TestFormatHSV(PillowTestCase):
|
|
|
|
def int_to_float(self, i):
|
|
return float(i)/255.0
|
|
|
|
def str_to_float(self, i):
|
|
|
|
return float(ord(i))/255.0
|
|
|
|
def to_int(self, f):
|
|
return int(f*255.0)
|
|
|
|
def tuple_to_ints(self, tp):
|
|
x, y, z = tp
|
|
return (int(x*255.0), int(y*255.0), int(z*255.0))
|
|
|
|
def test_sanity(self):
|
|
Image.new('HSV', (100, 100))
|
|
|
|
def wedge(self):
|
|
w = Image._wedge()
|
|
w90 = w.rotate(90)
|
|
|
|
(px, h) = w.size
|
|
|
|
r = Image.new('L', (px*3, h))
|
|
g = r.copy()
|
|
b = r.copy()
|
|
|
|
r.paste(w, (0, 0))
|
|
r.paste(w90, (px, 0))
|
|
|
|
g.paste(w90, (0, 0))
|
|
g.paste(w, (2*px, 0))
|
|
|
|
b.paste(w, (px, 0))
|
|
b.paste(w90, (2*px, 0))
|
|
|
|
img = Image.merge('RGB', (r, g, b))
|
|
|
|
# print (("%d, %d -> "% (int(1.75*px),int(.25*px))) + \
|
|
# "(%s, %s, %s)"%img.getpixel((1.75*px, .25*px)))
|
|
# print (("%d, %d -> "% (int(.75*px),int(.25*px))) + \
|
|
# "(%s, %s, %s)"%img.getpixel((.75*px, .25*px)))
|
|
return img
|
|
|
|
def to_xxx_colorsys(self, im, func, mode):
|
|
# convert the hard way using the library colorsys routines.
|
|
|
|
(r, g, b) = im.split()
|
|
|
|
if bytes is str:
|
|
conv_func = self.str_to_float
|
|
else:
|
|
conv_func = self.int_to_float
|
|
|
|
if hasattr(itertools, 'izip'):
|
|
iter_helper = itertools.izip
|
|
else:
|
|
iter_helper = itertools.zip_longest
|
|
|
|
converted = [self.tuple_to_ints(func(conv_func(_r), conv_func(_g),
|
|
conv_func(_b)))
|
|
for (_r, _g, _b) in iter_helper(r.tobytes(), g.tobytes(),
|
|
b.tobytes())]
|
|
|
|
if str is bytes:
|
|
new_bytes = b''.join(chr(h)+chr(s)+chr(v) for (
|
|
h, s, v) in converted)
|
|
else:
|
|
new_bytes = b''.join(bytes(chr(h)+chr(s)+chr(v), 'latin-1') for (
|
|
h, s, v) in converted)
|
|
|
|
hsv = Image.frombytes(mode, r.size, new_bytes)
|
|
|
|
return hsv
|
|
|
|
def to_hsv_colorsys(self, im):
|
|
return self.to_xxx_colorsys(im, colorsys.rgb_to_hsv, 'HSV')
|
|
|
|
def to_rgb_colorsys(self, im):
|
|
return self.to_xxx_colorsys(im, colorsys.hsv_to_rgb, 'RGB')
|
|
|
|
def test_wedge(self):
|
|
src = self.wedge().resize((3*32, 32), Image.BILINEAR)
|
|
im = src.convert('HSV')
|
|
comparable = self.to_hsv_colorsys(src)
|
|
|
|
# print (im.getpixel((448, 64)))
|
|
# print (comparable.getpixel((448, 64)))
|
|
|
|
# print(im.split()[0].histogram())
|
|
# print(comparable.split()[0].histogram())
|
|
|
|
# im.split()[0].show()
|
|
# comparable.split()[0].show()
|
|
|
|
self.assert_image_similar(im.split()[0], comparable.split()[0],
|
|
1, "Hue conversion is wrong")
|
|
self.assert_image_similar(im.split()[1], comparable.split()[1],
|
|
1, "Saturation conversion is wrong")
|
|
self.assert_image_similar(im.split()[2], comparable.split()[2],
|
|
1, "Value conversion is wrong")
|
|
|
|
# print (im.getpixel((192, 64)))
|
|
|
|
comparable = src
|
|
im = im.convert('RGB')
|
|
|
|
# im.split()[0].show()
|
|
# comparable.split()[0].show()
|
|
# print (im.getpixel((192, 64)))
|
|
# print (comparable.getpixel((192, 64)))
|
|
|
|
self.assert_image_similar(im.split()[0], comparable.split()[0],
|
|
3, "R conversion is wrong")
|
|
self.assert_image_similar(im.split()[1], comparable.split()[1],
|
|
3, "G conversion is wrong")
|
|
self.assert_image_similar(im.split()[2], comparable.split()[2],
|
|
3, "B conversion is wrong")
|
|
|
|
def test_convert(self):
|
|
im = hopper('RGB').convert('HSV')
|
|
comparable = self.to_hsv_colorsys(hopper('RGB'))
|
|
|
|
# print ([ord(x) for x in im.split()[0].tobytes()[:80]])
|
|
# print ([ord(x) for x in comparable.split()[0].tobytes()[:80]])
|
|
|
|
# print(im.split()[0].histogram())
|
|
# print(comparable.split()[0].histogram())
|
|
|
|
self.assert_image_similar(im.split()[0], comparable.split()[0],
|
|
1, "Hue conversion is wrong")
|
|
self.assert_image_similar(im.split()[1], comparable.split()[1],
|
|
1, "Saturation conversion is wrong")
|
|
self.assert_image_similar(im.split()[2], comparable.split()[2],
|
|
1, "Value conversion is wrong")
|
|
|
|
def test_hsv_to_rgb(self):
|
|
comparable = self.to_hsv_colorsys(hopper('RGB'))
|
|
converted = comparable.convert('RGB')
|
|
comparable = self.to_rgb_colorsys(comparable)
|
|
|
|
# print(converted.split()[1].histogram())
|
|
# print(target.split()[1].histogram())
|
|
|
|
# print ([ord(x) for x in target.split()[1].tobytes()[:80]])
|
|
# print ([ord(x) for x in converted.split()[1].tobytes()[:80]])
|
|
|
|
self.assert_image_similar(converted.split()[0], comparable.split()[0],
|
|
3, "R conversion is wrong")
|
|
self.assert_image_similar(converted.split()[1], comparable.split()[1],
|
|
3, "G conversion is wrong")
|
|
self.assert_image_similar(converted.split()[2], comparable.split()[2],
|
|
3, "B conversion is wrong")
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|
|
|
|
# End of file
|