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import os
import numpy as np
from dtcwt.coeffs import biort, qshift
from dtcwt.opencl.lowlevel import colfilter
from dtcwt.numpy.lowlevel import colfilter as colfilter_gold
from .util import assert_almost_equal, skip_if_no_cl
import tests.datasets as datasets
def setup_module():
global mandrill
mandrill = datasets.mandrill()
def test_mandrill_loaded():
assert mandrill.shape == (512, 512)
assert mandrill.min() >= 0
assert mandrill.max() <= 1
assert mandrill.dtype == np.float32
@skip_if_no_cl
def test_odd_size():
y = colfilter(mandrill, (-1,2,-1))
assert y.shape == mandrill.shape
z = colfilter_gold(mandrill, (-1,2,-1))
assert_almost_equal(y, z)
@skip_if_no_cl
def test_even_size():
y = colfilter(mandrill, (-1,1))
assert y.shape == (mandrill.shape[0]+1, mandrill.shape[1])
z = colfilter_gold(mandrill, (-1,1))
assert_almost_equal(y, z)
@skip_if_no_cl
def test_odd_size():
y = colfilter(mandrill, (-1,2,-1))
assert y.shape == mandrill.shape
z = colfilter_gold(mandrill, (-1,2,-1))
assert_almost_equal(y, z)
@skip_if_no_cl
def test_qshift():
y = colfilter(mandrill, qshift('qshift_a')[0])
assert y.shape == (mandrill.shape[0]+1, mandrill.shape[1])
z = colfilter_gold(mandrill, qshift('qshift_a')[0])
assert_almost_equal(y, z)
@skip_if_no_cl
def test_biort():
y = colfilter(mandrill, biort('antonini')[0])
assert y.shape == mandrill.shape
z = colfilter_gold(mandrill, biort('antonini')[0])
assert_almost_equal(y, z)
@skip_if_no_cl
def test_even_size():
y = colfilter(np.zeros_like(mandrill), (-1,1))
assert y.shape == (mandrill.shape[0]+1, mandrill.shape[1])
assert not np.any(y[:] != 0.0)
z = colfilter_gold(np.zeros_like(mandrill), (-1,1))
assert_almost_equal(y, z)
@skip_if_no_cl
def test_odd_size_non_array():
y = colfilter(mandrill.tolist(), (-1,2,-1))
assert y.shape == mandrill.shape
z = colfilter_gold(mandrill.tolist(), (-1,2,-1))
assert_almost_equal(y, z)
@skip_if_no_cl
def test_even_size_non_array():
y = colfilter(mandrill.tolist(), (-1,1))
assert y.shape == (mandrill.shape[0]+1, mandrill.shape[1])
z = colfilter_gold(mandrill.tolist(), (-1,1))
assert_almost_equal(y, z)
# vim:sw=4:sts=4:et
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