def test_rgb_to_husl():
rgb_arr = _img()
husl_new = _nphusl._rgb_to_husl(rgb_arr)
for row in range(rgb_arr.shape[0]):
for col in range(rgb_arr.shape[1]):
husl_old = _ref_to_husl(rgb_arr[row, col])
_diff_husl(husl_new[row, col], husl_old)
def test_rgb_to_husl_3d():
rgb_arr = np.ascontiguousarray(_img()[:5, :5])
float_arr = transform.ensure_rgb_float(rgb_arr)
husl_new = _nphusl._rgb_to_husl(rgb_arr)
for row in range(husl_new.shape[0]):
for col in range(husl_new.shape[1]):
husl_old = husl.rgb_to_husl(*float_arr[row, col])
_diff_husl(husl_new[row, col], husl_old)
def test_lch_to_husl():
rgb_arr = _img()
lch_arr = _nphusl._rgb_to_lch(rgb_arr)
hsl_from_lch_arr = _nphusl._lch_to_husl(lch_arr)
hsl_from_rgb_arr = _nphusl._rgb_to_husl(rgb_arr)
_diff_husl(hsl_from_lch_arr, hsl_from_rgb_arr)
for i in range(rgb_arr.shape[0]):
old_lch = _ref_to_lch(rgb_arr[i, 0])
_diff(lch_arr[i, 0], old_lch)
def test_to_hue_3d():
img = _img() # 3D
as_husl = _nphusl._rgb_to_husl(img / 255.0)
just_hue = nphusl.to_hue(img)
_diff(as_husl[..., 0], just_hue)
def test_husl_to_rgb():
img = np.ascontiguousarray(_img()[25:, :5])
husl = _nphusl._rgb_to_husl(img)
rgb = transform.ensure_rgb_int(_nphusl._husl_to_rgb(husl))
_diff(img, rgb)