def test_grayscale_greater_than_1():
im = util.fill((4, 4), [174, 56, 3])
grayscaled_im = css.grayscale(im, 2)
grayscaleed_im2 = css.grayscale(im, 1)
assert list(grayscaled_im.getdata()) == list(grayscaleed_im2.getdata())
assert grayscaled_im.size == im.size
assert grayscaled_im.mode == im.mode
def test_grayscale_hsv():
im = util.fill((4, 4), [174, 56, 3])
im2 = im.convert('HSV')
grayscaled_im = css.grayscale(im)
grayscaled_im2 = css.grayscale(im2)
grayscaled_im2_rgb = grayscaled_im2.convert('RGB')
assert list(grayscaled_im.getdata()) == list(grayscaled_im2_rgb.getdata())
assert grayscaled_im2.size == im2.size
assert grayscaled_im2.mode == im2.mode
def test_grayscale_0():
im = util.fill((4, 4), [174, 56, 3])
grayscaled_im = css.grayscale(im, 0)
assert list(grayscaled_im.getdata()) == list(im.getdata())
assert grayscaled_im.size == im.size
assert grayscaled_im.mode == im.mode
def test_saturate_0():
im = util.fill((4, 4), [174, 56, 3])
saturated_im = css.saturate(im, 0)
grayscaled_im = css.grayscale(im)
assert list(saturated_im.getdata()) == list(grayscaled_im.getdata())
assert saturated_im.size == im.size
assert saturated_im.mode == im.mode
def inkwell(im):
"""Applies Inkwell filter.
Arguments:
im: An input image.
Returns:
The output image.
"""
cb = util.or_convert(im, 'RGB')
cr = css.sepia(cb, .3)
cr = css.contrast(cr, 1.1)
cr = css.brightness(cr, 1.1)
cr = css.grayscale(cr)
return cr
def moon(im):
"""Applies Moon filter.
Arguments:
im: An input image.
Returns:
The output image.
"""
cb = util.or_convert(im, 'RGB')
cs1 = util.fill(cb.size, [160, 160, 160])
cs = css.blending.soft_light(cb, cs1)
cs2 = util.fill(cb.size, [56, 56, 56])
cr = css.blending.lighten(cs, cs2)
cr = css.grayscale(cr)
cr = css.contrast(cr, 1.1)
cr = css.brightness(cr, 1.1)
return cr
def willow(im):
"""Applies Willow filter.
Arguments:
im: An input image.
Returns:
The output image.
"""
cb = util.or_convert(im, 'RGB')
cs1 = util.radial_gradient(cb.size, [(212, 169, 175), (0, 0, 0)],
[.55, 1.5])
cm1 = css.blending.overlay(cb, cs1)
cs2 = util.fill(cb.size, [216, 205, 203])
cr = css.blending.color(cm1, cs2)
cr = css.grayscale(cr, .5)
cr = css.contrast(cr, .95)
cr = css.brightness(cr, .9)
return cr
def test_grayscale_less_than_0():
with pytest.raises(AssertionError):
im = util.fill((4, 4), [174, 56, 3])
css.grayscale(im, -1)
def test_grayscale():
im = util.fill((4, 4), [174, 56, 3])
grayscaled_im = css.grayscale(im)
assert grayscaled_im.size == im.size
assert grayscaled_im.mode == im.mode