Beispiel #1
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def test_integer_perfect_recon():
    # Check that an integer input is correctly coerced into a floating point
    # array and reconstructed
    A = np.array([[1,2,3,4], [5,6,7,8]], dtype=np.int32)
    Yl, Yh = dtwavexfm2(A)
    B = dtwaveifm2(Yl, Yh)
    assert np.max(np.abs(A-B)) < 1e-5
Beispiel #2
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def test_integer_perfect_recon():
    # Check that an integer input is correctly coerced into a floating point
    # array and reconstructed
    A = np.array([[1,2,3,4], [5,6,7,8]], dtype=np.int32)
    Yl, Yh = dtwavexfm2(A)
    B = dtwaveifm2(Yl, Yh)
    assert np.max(np.abs(A-B)) < 1e-5
Beispiel #3
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def test_float32_input():
    # Check that an float32 input is correctly output as float32
    Yl, Yh = dtwavexfm2(mandrill.astype(np.float32))
    assert np.issubsctype(Yl.dtype, np.float32)
    assert np.all(list(np.issubsctype(x.dtype, np.complex64) for x in Yh))

    mandrill_recon = dtwaveifm2(Yl, Yh)
    assert np.issubsctype(mandrill_recon.dtype, np.float32)
Beispiel #4
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def test_float32_input():
    # Check that an float32 input is correctly output as float32
    Yl, Yh = dtwavexfm2(lena.astype(np.float32))
    assert np.issubsctype(Yl.dtype, np.float32)
    assert np.all(list(np.issubsctype(x.dtype, np.complex64) for x in Yh))

    lena_recon = dtwaveifm2(Yl, Yh)
    assert np.issubsctype(lena_recon.dtype, np.float32)
Beispiel #5
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def test_reconstruct_custom_filter():
    # Reconstruction up to tolerance
    Yl, Yh = dtwavexfm2(mandrill, 4, biort('legall'), qshift('qshift_06'))
    mandrill_recon = dtwaveifm2(Yl, Yh, biort('legall'), qshift('qshift_06'))
    assert np.all(np.abs(mandrill_recon - mandrill) < TOLERANCE)
Beispiel #6
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def test_reconstruct_crop():
    # Reconstruction up to tolerance
    Yl_crop, Yh_crop = dtwavexfm2(mandrill_crop)
    mandrill_recon = dtwaveifm2(
        Yl_crop, Yh_crop)[:mandrill_crop.shape[0], :mandrill_crop.shape[1]]
    assert np.all(np.abs(mandrill_recon - mandrill_crop) < TOLERANCE)
Beispiel #7
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def test_reconstruct():
    # Reconstruction up to tolerance
    Yl, Yh = dtwavexfm2(mandrill)
    mandrill_recon = dtwaveifm2(Yl, Yh)
    assert np.all(np.abs(mandrill_recon - mandrill) < TOLERANCE)
Beispiel #8
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def test_rot_symm_modified():
    # This test only checks there is no error running these functions, not that they work
    Yl, Yh, Yscale = dtwavexfm2(mandrill, biort='near_sym_b_bp', qshift='qshift_b_bp', include_scale=True)
    Z = dtwaveifm2(Yl, Yh, biort='near_sym_b_bp', qshift='qshift_b_bp')
Beispiel #9
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def test_rot_symm_modified():
    # This test only checks there is no error running these functions, not that they work
    Yl, Yh, Yscale = dtwavexfm2(lena, biort='near_sym_b_bp', qshift='qshift_b_bp', include_scale=True)
    Z = dtwaveifm2(Yl, Yh, biort='near_sym_b_bp', qshift='qshift_b_bp')
Beispiel #10
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def test_reconstruct_custom_filter():
    # Reconstruction up to tolerance
    Yl, Yh = dtwavexfm2(lena, 4, biort('legall'), qshift('qshift_06'))
    lena_recon = dtwaveifm2(Yl, Yh, biort('legall'), qshift('qshift_06'))
    assert np.all(np.abs(lena_recon - lena) < TOLERANCE)
Beispiel #11
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def test_reconstruct_crop():
    # Reconstruction up to tolerance
    Yl_crop, Yh_crop = dtwavexfm2(lena_crop)
    lena_recon = dtwaveifm2(Yl_crop, Yh_crop)[:lena_crop.shape[0], :lena_crop.shape[1]]
    assert np.all(np.abs(lena_recon - lena_crop) < TOLERANCE)
Beispiel #12
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def test_reconstruct():
    # Reconstruction up to tolerance
    Yl, Yh = dtwavexfm2(lena)
    lena_recon = dtwaveifm2(Yl, Yh)
    assert np.all(np.abs(lena_recon - lena) < TOLERANCE)
Beispiel #13
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def test_reconstruct_custom_filter():
    # Reconstruction up to tolerance
    Yl, Yh = dtwavexfm2(mandrill, 4, biort("legall"), qshift("qshift_06"))
    mandrill_recon = dtwaveifm2(Yl, Yh, biort("legall"), qshift("qshift_06"))
    assert np.all(np.abs(mandrill_recon - mandrill) < TOLERANCE)
Beispiel #14
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def test_reconstruct_crop():
    # Reconstruction up to tolerance
    Yl_crop, Yh_crop = dtwavexfm2(mandrill_crop)
    mandrill_recon = dtwaveifm2(Yl_crop, Yh_crop)[: mandrill_crop.shape[0], : mandrill_crop.shape[1]]
    assert np.all(np.abs(mandrill_recon - mandrill_crop) < TOLERANCE)
Beispiel #15
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def test_reconstruct():
    # Reconstruction up to tolerance
    Yl, Yh = dtwavexfm2(mandrill)
    mandrill_recon = dtwaveifm2(Yl, Yh)
    assert np.all(np.abs(mandrill_recon - mandrill) < TOLERANCE)