def test_ts_feat_desc(self):
t = Track()
f0 = Feature(mag=0)
d0 = Descriptor(4)
d0[:] = 0
t.append(TrackState(0, f0, d0))
f1 = Feature(mag=1)
d1 = Descriptor(4)
d1[:] = 1
t.append(TrackState(1, f1, d1))
nose.tools.assert_equal(t.size, 2)
nose.tools.assert_equal(len(t), 2)
ts0 = t.find_state(0)
nose.tools.assert_equal(ts0.feature, f0)
numpy.testing.assert_equal(ts0.descriptor, d0)
ts1 = t.find_state(1)
nose.tools.assert_equal(ts1.feature, f1)
numpy.testing.assert_equal(ts1.descriptor, d1)
# Delete local descriptor references, get track states and check
# descriptor values manually
del f0, f1, d0, d1, ts0, ts1
# Now, only the track-state in C++ has feature/descriptor references
numpy.testing.assert_equal(t.find_state(0).descriptor, [0, 0, 0, 0])
numpy.testing.assert_equal(t.find_state(1).descriptor, [1, 1, 1, 1])
def test_new(self):
# Attempt construction using a bunch of random, non-zero integers
random.seed(0)
for i in xrange(100):
n = random.randint(1, 4096)
Descriptor(n, ctypes.c_double)
Descriptor(n, ctypes.c_float)
def test_new(self):
# Attempt construction using a bunch of random, non-zero integers
random.seed(0)
for i in range(100):
n = random.randint(1, 4096)
Descriptor(n, 'd')
Descriptor(n, 'f')
def test_new_with_descriptors(self):
# Try creating a descriptor set with multiple descriptors as input.
descriptor_list = [
Descriptor(1),
Descriptor(1),
Descriptor(1),
]
ds = DescriptorSet(descriptor_list)
def test_num_bytes(self):
# While not calling the C function, it should still be a correct value
random.seed(0)
for i in range(100):
n = random.randint(1, 4096)
print(n, end=' ')
nose.tools.assert_equal(Descriptor(n, 'd').nbytes, 8 * n)
nose.tools.assert_equal(Descriptor(n, 'f').nbytes, 4 * n)
def test_new(self):
# Attempt construction using a bunch of random, non-zero integers
random.seed(0)
for i in xrange(100):
n = random.randint(1, 4096)
Descriptor(n, ctypes.c_double)
Descriptor(n, ctypes.c_float)
nose.tools.assert_raises(ctypes.ArgumentError, Descriptor, 42.3)
def test_num_bytes(self):
# While not calling the C function, it should still be a correct value
random.seed(0)
for i in xrange(100):
n = random.randint(1, 4096)
print n,
nose.tools.assert_equal(
Descriptor(n, ctypes.c_double).nbytes,
ctypes.sizeof(ctypes.c_double) * n)
nose.tools.assert_equal(
Descriptor(n, ctypes.c_float).nbytes,
ctypes.sizeof(ctypes.c_float) * n)
def descriptors(self):
"""
Get the set of descriptor instances contained in this set as a tuple.
:return: A tuple of the contained descriptor instances.
:rtype: tuple[Descriptor]
"""
out_d_array = ctypes.POINTER(Descriptor.c_ptr_type())()
out_d_array_size = ctypes.c_size_t()
self._call_cfunc(
'vital_descriptor_set_get_descriptors',
[
self.C_TYPE_PTR,
ctypes.POINTER(ctypes.POINTER(Descriptor.c_ptr_type())),
ctypes.POINTER(ctypes.c_size_t)
],
[self,
ctypes.byref(out_d_array),
ctypes.byref(out_d_array_size)],
)
d_list = []
for i in range(out_d_array_size.value):
cptr = Descriptor.c_ptr_type()(out_d_array[i].contents)
d_list.append(Descriptor(from_cptr=cptr))
free_void_ptr(out_d_array)
return d_list
def test_data_type_failure(self):
d_d = Descriptor(128, ctypes.c_double)
d_d[:] = 1
nose.tools.assert_equal(d_d.sum(), 128)
nose.tools.assert_raises(VitalDynamicCastException,
Descriptor,
from_cptr=d_d.c_pointer,
ctype=ctypes.c_float)
d_f = Descriptor(128, ctypes.c_float)
d_f[:] = 1
nose.tools.assert_equal(d_f.sum(), 128)
nose.tools.assert_raises(VitalDynamicCastException,
Descriptor,
from_cptr=d_f.c_pointer,
ctype=ctypes.c_double)
def test_tobytearray(self):
# Expect 0-valued descriptor to have 0-valued byte array of the
# appropriate size
d = Descriptor(64)
d[:] = 0
b = d.tobytearray()
nose.tools.assert_equal(b.size, d.nbytes)
nose.tools.assert_equal(b.sum(), 0)
def descriptor(self):
d_ptr = self._call_cfunc("vital_track_state_descriptor",
[self.C_TYPE_PTR], [self],
Descriptor.c_ptr_type())
if d_ptr:
return Descriptor(from_cptr=d_ptr)
else:
return None
def test_desc(self):
# Some random initialized descriptor
d = Descriptor()
d[:] = 1
nose.tools.assert_equal(d.sum(), d.size)
ts = TrackState(0, descriptor=d)
numpy.testing.assert_equal(d, ts.descriptor)
def test_raw_data(self):
d = Descriptor(64)
d[:] = 1
nose.tools.assert_equal(d.sum(), 64)
# Check that slicing the array data yields an array with the same
# values.
d2 = d[:]
numpy.testing.assert_equal(d.todoublearray(), d2)
def test_size_multiple(self):
# Check that size accurately report number of descriptors constructed
# with.
d_list = [
Descriptor(),
]
ds = DescriptorSet(d_list)
self.assertEqual(ds.size(), 1)
self.assertEqual(len(ds), 1)
def test_get_descriptors_multiple(self):
# Test getting descriptors given to the set in its constructor.
d_list = [
Descriptor(1),
Descriptor(2),
Descriptor(3),
]
d_list[0][:] = [0]
d_list[1][:] = [1, 2]
d_list[2][:] = [3, 4, 5]
ds = DescriptorSet(d_list)
ds_descriptors = ds.descriptors()
self.assertEqual(len(ds), 3)
self.assertEqual(len(ds_descriptors), 3)
numpy.testing.assert_array_equal(ds_descriptors[0], d_list[0])
numpy.testing.assert_array_equal(ds_descriptors[1], d_list[1])
numpy.testing.assert_array_equal(ds_descriptors[2], d_list[2])
def test_raw_data(self):
d = Descriptor(64)
d[:] = 1
nose.tools.assert_equal(d.sum(), 64)
d2 = d[:]
numpy.testing.assert_almost_equal(d, d2)
d2[:] = 2
numpy.testing.assert_almost_equal(d, d2)
def test_raw_data(self):
d = Descriptor(64)
d[:] = 1
nose.tools.assert_equal(d.sum(), 64)
# Check that slicing the array data yields an array with the same
# values.
d2 = d[:]
numpy.testing.assert_almost_equal(d, d2)
# Check that modifying the sliced array shared the same data as the
# parent descriptor.
d2[:] = 2
numpy.testing.assert_almost_equal(d, d2)
def test_new_ts(self):
TrackState(0)
TrackState(23456)
# With feat, desc, feat/desc
f = Feature()
d = Descriptor()
TrackState(0, feature=f)
TrackState(0, descriptor=d)
TrackState(0, f, d)
# Only integers
nose.tools.assert_raises(ctypes.ArgumentError, TrackState, 1.2)
nose.tools.assert_raises(ctypes.ArgumentError, TrackState, 'foo')
def test_size(self):
# Check that we can check the size of the descriptor array.
random.seed(0)
for i in xrange(100):
n = random.randint(1, 4096)
nose.tools.assert_equal(Descriptor(n).size, n)
def test_size(self):
random.seed(0)
for i in xrange(100):
n = random.randint(1, 4096)
nose.tools.assert_equal(Descriptor(n).size, n)
