def setup(self, shape, mode):
self.img = np.random.randint(255, size=shape, dtype=np.uint8)
self.tmpdir = Path(mkdtemp())
self.filename = self.tmpdir / 'saved.bmp'
imwrite(self.filename, self.img, write_order='RGBA')
self.filename_pillow = self.tmpdir / 'saved_pillow.bmp'
# Pillow needs BGRA
imwrite(self.filename_pillow, self.img, write_order='BGRA')
def time_save(self, shape, mode):
if mode == 'pillow':
p = Image.fromarray(self.img)
filename = self.tmpdir / 'pillow.bmp'
p.save(filename)
elif mode == 'imageio':
filename = self.tmpdir / 'imageio.bmp'
imageio.imwrite(filename, self.img)
else:
filename = self.tmpdir / 'redpil.bmp'
imwrite(filename, self.img)
def test_uint8_rgb_image(tmpdir, shape, backend):
tmpfile = os.path.join(str(tmpdir), 'test.bmp')
img = np.random.randint(255, size=shape, dtype=np.uint8)
imwrite(tmpfile, img)
if backend == 'pillow':
img_read = np.asarray(Image.open(tmpfile).convert('RGB'))
else:
img_read = imread(tmpfile)
assert img.dtype == img_read.dtype
assert_array_equal(img, img_read)
def test_bool_image(tmpdir, shape, backend):
tmpfile = os.path.join(str(tmpdir), 'test.bmp')
img = np.random.randint(2, size=shape, dtype=np.bool)
img[0, 0] = False
img[-1, -1] = True
print(img)
imwrite(tmpfile, img)
if backend == 'pillow':
img_read = np.asarray(Image.open(tmpfile).convert('L'))
else:
img_read = imread(tmpfile)
print(img_read)
assert img_read[0, 0] == 0
assert img_read[-1, -1] == 255
color_pallet = np.asarray([0, 255], dtype=np.uint8)
assert_array_equal(color_pallet[img.astype(np.uint8)], img_read)
def setup(self, shape, mode):
self.img = np.random.randint(255, size=shape, dtype=np.uint8)
self.tmpdir = Path(mkdtemp())
self.filename = self.tmpdir / 'saved.bmp'
imwrite(self.filename, self.img)
def test_failers(tmpdir):
tmpfile = os.path.join(str(tmpdir), 'test.bmp')
img = np.zeros((4, 4), dtype=np.float32)
with pytest.raises(NotImplementedError):
imwrite(tmpfile, img)