def test_real_input():
reference_image = camera()
subpixel_shift = (-2.4, 1.32)
shifted_image = fourier_shift(fft.fftn(reference_image), subpixel_shift)
shifted_image = fft.ifftn(shifted_image)
# subpixel precision
result, error, diffphase = register_translation(reference_image,
shifted_image, 100)
assert_allclose(result[:2], -np.array(subpixel_shift), atol=0.05)
def test_real_input():
reference_image = camera()
subpixel_shift = (-2.4, 1.32)
shifted_image = fourier_shift(fft.fftn(reference_image), subpixel_shift)
shifted_image = fft.ifftn(shifted_image)
# subpixel precision
result, error, diffphase = phase_cross_correlation(reference_image,
shifted_image,
upsample_factor=100)
assert_allclose(result[:2], -np.array(subpixel_shift), atol=0.05)
def test_real_input(dtype):
reference_image = camera().astype(dtype, copy=False)
subpixel_shift = (-2.4, 1.32)
shifted_image = fourier_shift(fft.fftn(reference_image), subpixel_shift)
shifted_image = fft.ifftn(shifted_image).real.astype(dtype, copy=False)
# subpixel precision
result, error, diffphase = phase_cross_correlation(reference_image,
shifted_image,
upsample_factor=100)
assert result.dtype == _supported_float_type(dtype)
assert_allclose(result[:2], -np.array(subpixel_shift), atol=0.05)