def setup(dials_data):
from dials.algorithms.profile_model.gaussian_rs import BBoxCalculator3D
from dials.model.serialize import load
sequence = load.sequence(
dials_data("centroid_test_data").join("sweep.json").strpath)
fixture = {}
# Get the models
fixture["beam"] = sequence.get_beam()
fixture["detector"] = sequence.get_detector()
fixture["gonio"] = sequence.get_goniometer()
fixture["scan"] = sequence.get_scan()
# Set the delta_divergence/mosaicity
n_sigma = 5
sigma_divergence = 0.060 * math.pi / 180
mosaicity = 0.154 * math.pi / 180
fixture["delta_divergence"] = n_sigma * sigma_divergence
fixture["delta_mosaicity"] = n_sigma * mosaicity
# Create the bounding box calculator
fixture["calculate_bbox"] = BBoxCalculator3D(
fixture["beam"],
fixture["detector"],
fixture["gonio"],
fixture["scan"],
fixture["delta_divergence"],
fixture["delta_mosaicity"],
)
return fixture
def test_run(dials_data):
from dials.algorithms.profile_model.gaussian_rs import transform
from dials.algorithms.profile_model.gaussian_rs import CoordinateSystem
from scitbx import matrix
from dials.model.serialize import load
sequence = load.sequence(
dials_data("centroid_test_data").join("sweep.json").strpath)
# Get the models
beam = sequence.get_beam()
detector = sequence.get_detector()
gonio = sequence.get_goniometer()
assert len(detector) == 1
# Get some stuff
s0 = beam.get_s0()
m2 = gonio.get_rotation_axis()
image_size = detector[0].get_image_size()
# Get a random s1/phi
i = random.uniform(0, image_size[0])
j = random.uniform(1, image_size[1])
s1 = matrix.col(detector[0].get_pixel_lab_coord((i, j)))
s1 = s1.normalize() * matrix.col(s0).length()
phi = random.uniform(0, 5)
x0 = int(math.floor(i - 10))
y0 = int(math.floor(j - 10))
# Set some parameters
sigma_divergence = beam.get_sigma_divergence(deg=False)
delta_divergence = 3 * sigma_divergence
grid_half_size = 4
step_size = (delta_divergence / grid_half_size,
delta_divergence / grid_half_size)
# Create the coordinate system
cs = CoordinateSystem(m2, s0, s1, phi)
# Create the map of s1 coordinates
s1_map = transform.beam_vector_map(detector[0], beam, True)
# Create the grid index generator
generate_indices = transform.GridIndexGenerator(cs, x0, y0, step_size,
grid_half_size, s1_map)
for j in range(0, 20):
for i in range(0, 20):
xx = x0 + i
yy = y0 + j
if xx < 0 or yy < 0 or xx >= image_size[0] or yy >= image_size[0]:
continue
# Get the grid indices
gi_1, gj_1 = generate_indices(j, i)
# Get the grid indices
xyz = matrix.col(detector[0].get_pixel_lab_coord((x0 + i, y0 + j)))
xyz = xyz.normalize() * matrix.col(s0).length()
c1, c2 = matrix.col(cs.from_beam_vector(xyz))
gi_2 = grid_half_size + c1 / step_size[0] + 0.5
gj_2 = grid_half_size + c2 / step_size[1] + 0.5
# Check both are the same
eps = 1e-7
assert abs(gj_1 - gj_2) <= eps, (gi_1, gi_2, gj_1, gj_2)
assert abs(gi_1 - gi_2) <= eps, (gi_1, gi_2, gj_1, gj_2)
def test_forward(dials_data):
sequence = load.sequence(
dials_data("centroid_test_data").join("sweep.json").strpath)
# Get the models
beam = sequence.get_beam()
detector = sequence.get_detector()
gonio = sequence.get_goniometer()
scan = sequence.get_scan()
# Set some parameters
sigma_divergence = beam.get_sigma_divergence(deg=False)
mosaicity = 0.157 * math.pi / 180
n_sigma = 3
grid_size = 7
delta_divergence = n_sigma * sigma_divergence
step_size = delta_divergence / grid_size
delta_divergence2 = delta_divergence + step_size * 0.5
delta_mosaicity = n_sigma * mosaicity
# Create the bounding box calculator
calculate_bbox = BBoxCalculator3D(beam, detector, gonio, scan,
delta_divergence2, delta_mosaicity)
# Initialise the transform
spec = transform.TransformSpec(beam, detector, gonio, scan,
sigma_divergence, mosaicity, n_sigma + 1,
grid_size)
# tst_conservation_of_counts(self):
assert len(detector) == 1
s0 = beam.get_s0()
m2 = gonio.get_rotation_axis()
s0_length = matrix.col(beam.get_s0()).length()
# Create an s1 map
s1_map = transform.beam_vector_map(detector[0], beam, True)
for i in range(100):
# Get random x, y, z
x = random.uniform(300, 1800)
y = random.uniform(300, 1800)
z = random.uniform(0, 9)
# Get random s1, phi, panel
s1 = matrix.col(detector[0].get_pixel_lab_coord(
(x, y))).normalize() * s0_length
phi = scan.get_angle_from_array_index(z, deg=False)
panel = 0
# Calculate the bounding box
bbox = calculate_bbox(s1, z, panel)
x0, x1, y0, y1, z0, z1 = bbox
# Create the coordinate system
cs = CoordinateSystem(m2, s0, s1, phi)
# The grid index generator
step_size = delta_divergence / grid_size
grid_index = transform.GridIndexGenerator(cs, x0, y0,
(step_size, step_size),
grid_size, s1_map)
# Create the image
# image = flex.double(flex.grid(z1 - z0, y1 - y0, x1 - x0), 1)
image = gaussian((z1 - z0, y1 - y0, x1 - x0), 10.0,
(z - z0, y - y0, x - x0), (2.0, 2.0, 2.0))
mask = flex.bool(flex.grid(image.all()), False)
for j in range(y1 - y0):
for i in range(x1 - x0):
inside = False
gx00, gy00 = grid_index(j, i)
gx01, gy01 = grid_index(j, i + 1)
gx10, gy10 = grid_index(j + 1, i)
gx11, gy11 = grid_index(j + 1, i + 1)
mingx = min([gx00, gx01, gx10, gx11])
maxgx = max([gx00, gx01, gx10, gx11])
mingy = min([gy00, gy01, gy10, gy11])
maxgy = max([gy00, gy01, gy10, gy11])
if (mingx >= 0 and maxgx < 2 * grid_size + 1 and mingy >= 0
and maxgy < 2 * grid_size + 1):
inside = True
for k in range(1, z1 - z0 - 1):
mask[k, j, i] = inside
# Transform the image to the grid
transformed = transform.TransformForward(spec, cs, bbox, 0,
image.as_double(), mask)
grid = transformed.profile()
# Get the sums and ensure they're the same
eps = 1e-7
sum_grid = flex.sum(grid)
sum_image = flex.sum(flex.double(flex.select(image, flags=mask)))
assert abs(sum_grid - sum_image) <= eps
# Test passed
# tst_transform_with_background(self):
assert len(detector) == 1
s0 = beam.get_s0()
m2 = gonio.get_rotation_axis()
s0_length = matrix.col(beam.get_s0()).length()
# Create an s1 map
s1_map = transform.beam_vector_map(detector[0], beam, True)
for i in range(100):
# Get random x, y, z
x = random.uniform(300, 1800)
y = random.uniform(300, 1800)
z = random.uniform(0, 9)
# Get random s1, phi, panel
s1 = matrix.col(detector[0].get_pixel_lab_coord(
(x, y))).normalize() * s0_length
phi = scan.get_angle_from_array_index(z, deg=False)
panel = 0
# Calculate the bounding box
bbox = calculate_bbox(s1, z, panel)
x0, x1, y0, y1, z0, z1 = bbox
# Create the coordinate system
cs = CoordinateSystem(m2, s0, s1, phi)
# The grid index generator
step_size = delta_divergence / grid_size
grid_index = transform.GridIndexGenerator(cs, x0, y0,
(step_size, step_size),
grid_size, s1_map)
# Create the image
# image = flex.double(flex.grid(z1 - z0, y1 - y0, x1 - x0), 1)
image = gaussian((z1 - z0, y1 - y0, x1 - x0), 10.0,
(z - z0, y - y0, x - x0), (2.0, 2.0, 2.0))
background = flex.random_double(len(image))
background.resize(image.accessor())
mask = flex.bool(flex.grid(image.all()), False)
for j in range(y1 - y0):
for i in range(x1 - x0):
inside = False
gx00, gy00 = grid_index(j, i)
gx01, gy01 = grid_index(j, i + 1)
gx10, gy10 = grid_index(j + 1, i)
gx11, gy11 = grid_index(j + 1, i + 1)
mingx = min([gx00, gx01, gx10, gx11])
maxgx = max([gx00, gx01, gx10, gx11])
mingy = min([gy00, gy01, gy10, gy11])
maxgy = max([gy00, gy01, gy10, gy11])
if (mingx >= 0 and maxgx <= 2 * grid_size + 1 and mingy >= 0
and maxgy <= 2 * grid_size + 1):
inside = True
for k in range(1, z1 - z0 - 1):
mask[k, j, i] = inside
# Transform the image to the grid
transformed = transform.TransformForward(spec, cs, bbox, 0,
image.as_double(),
background.as_double(), mask)
igrid = transformed.profile()
bgrid = transformed.background()
# Get the sums and ensure they're the same
eps = 1e-7
sum_igrid = flex.sum(igrid)
sum_bgrid = flex.sum(bgrid)
sum_image = flex.sum(flex.double(flex.select(image, flags=mask)))
sum_bkgrd = flex.sum(flex.double(flex.select(background, flags=mask)))
try:
assert abs(sum_igrid - sum_image) <= eps
assert abs(sum_bgrid - sum_bkgrd) <= eps
except Exception:
print("Failed for: ", (x, y, z))
raise
def test_forward_no_model(dials_data):
sequence = load.sequence(
dials_data("centroid_test_data").join("sweep.json").strpath)
# Get the models
beam = sequence.get_beam()
detector = sequence.get_detector()
gonio = sequence.get_goniometer()
scan = sequence.get_scan()
scan.set_image_range((0, 1000))
# Set some parameters
sigma_divergence = beam.get_sigma_divergence(deg=False)
mosaicity = 0.157 * math.pi / 180
n_sigma = 3
grid_size = 20
delta_divergence = n_sigma * sigma_divergence
step_size = delta_divergence / grid_size
delta_divergence2 = delta_divergence + step_size * 0.5
delta_mosaicity = n_sigma * mosaicity
# Create the bounding box calculator
calculate_bbox = BBoxCalculator3D(beam, detector, gonio, scan,
delta_divergence2, delta_mosaicity)
# Initialise the transform
spec = transform.TransformSpec(beam, detector, gonio, scan,
sigma_divergence, mosaicity, n_sigma + 1,
grid_size)
# tst_conservation_of_counts(self):
random.seed(0)
assert len(detector) == 1
s0 = beam.get_s0()
m2 = gonio.get_rotation_axis()
s0_length = matrix.col(beam.get_s0()).length()
# Create an s1 map
s1_map = transform.beam_vector_map(detector[0], beam, True)
for i in range(100):
# Get random x, y, z
x = random.uniform(300, 1800)
y = random.uniform(300, 1800)
z = random.uniform(500, 600)
# Get random s1, phi, panel
s1 = matrix.col(detector[0].get_pixel_lab_coord(
(x, y))).normalize() * s0_length
phi = scan.get_angle_from_array_index(z, deg=False)
panel = 0
# Calculate the bounding box
bbox = calculate_bbox(s1, z, panel)
x0, x1, y0, y1, z0, z1 = bbox
# Create the coordinate system
cs = CoordinateSystem(m2, s0, s1, phi)
if abs(cs.zeta()) < 0.1:
continue
# The grid index generator
step_size = delta_divergence / grid_size
grid_index = transform.GridIndexGenerator(cs, x0, y0,
(step_size, step_size),
grid_size, s1_map)
# Create the image
# image = flex.double(flex.grid(z1 - z0, y1 - y0, x1 - x0), 1)
image = gaussian((z1 - z0, y1 - y0, x1 - x0), 10.0,
(z - z0, y - y0, x - x0), (2.0, 2.0, 2.0))
mask = flex.bool(flex.grid(image.all()), False)
for j in range(y1 - y0):
for i in range(x1 - x0):
inside = False
gx00, gy00 = grid_index(j, i)
gx01, gy01 = grid_index(j, i + 1)
gx10, gy10 = grid_index(j + 1, i)
gx11, gy11 = grid_index(j + 1, i + 1)
mingx = min([gx00, gx01, gx10, gx11])
maxgx = max([gx00, gx01, gx10, gx11])
mingy = min([gy00, gy01, gy10, gy11])
maxgy = max([gy00, gy01, gy10, gy11])
if (mingx >= 0 and maxgx < 2 * grid_size + 1 and mingy >= 0
and maxgy < 2 * grid_size + 1):
inside = True
for k in range(1, z1 - z0 - 1):
mask[k, j, i] = inside
# Transform the image to the grid
transformed = transform.TransformForwardNoModel(
spec, cs, bbox, 0, image.as_double(), mask)
grid = transformed.profile()
# Get the sums and ensure they're the same
eps = 1e-7
sum_grid = flex.sum(grid)
sum_image = flex.sum(flex.double(flex.select(image, flags=mask)))
assert abs(sum_grid - sum_image) <= eps
mask = flex.bool(flex.grid(image.all()), True)
transformed = transform.TransformForwardNoModel(
spec, cs, bbox, 0, image.as_double(), mask)
grid = transformed.profile()
# Boost the bbox to make sure all intensity is included
x0, x1, y0, y1, z0, z1 = bbox
bbox2 = (x0 - 10, x1 + 10, y0 - 10, y1 + 10, z0 - 10, z1 + 10)
# Do the reverse transform
transformed = transform.TransformReverseNoModel(
spec, cs, bbox2, 0, grid)
image2 = transformed.profile()
# Check the sum of pixels are the same
sum_grid = flex.sum(grid)
sum_image = flex.sum(image2)
assert abs(sum_grid - sum_image) <= eps
# Do the reverse transform
transformed = transform.TransformReverseNoModel(
spec, cs, bbox, 0, grid)
image2 = transformed.profile()
from dials.algorithms.statistics import pearson_correlation_coefficient
cc = pearson_correlation_coefficient(image.as_1d().as_double(),
image2.as_1d())
assert cc >= 0.99
def test_map_frames_forward(dials_data):
from dials.model.serialize import load
from dials.algorithms.profile_model.gaussian_rs.transform import MapFramesForward
from dials.algorithms.profile_model.gaussian_rs import BBoxCalculator3D
sequence = load.sequence(
dials_data("centroid_test_data").join("sweep.json").strpath)
# Get the models
beam = sequence.get_beam()
detector = sequence.get_detector()
gonio = sequence.get_goniometer()
scan = sequence.get_scan()
# Set the delta_divergence/mosaicity
n_sigma = 3
sigma_divergence = 0.060 * math.pi / 180
mosaicity = 0.154 * math.pi / 180
delta_divergence = n_sigma * sigma_divergence
delta_mosaicity = n_sigma * mosaicity
# Set the grid size
grid_size = (4, 4, 4)
# Create the E3 fraction object
transform = MapFramesForward(
scan.get_array_range()[0],
scan.get_oscillation(deg=False)[0],
scan.get_oscillation(deg=False)[1],
mosaicity,
n_sigma,
grid_size[2],
)
# Create the bounding box calculator
calculate_bbox = BBoxCalculator3D(beam, detector, gonio, scan,
delta_divergence, delta_mosaicity)
from dials.algorithms.profile_model.gaussian_rs import CoordinateSystem
from scitbx.array_family import flex
assert len(detector) == 1
s0 = beam.get_s0()
m2 = gonio.get_rotation_axis()
s0_length = matrix.col(beam.get_s0()).length()
for i in range(100):
# Get random x, y, z
x = random.uniform(0, 2000)
y = random.uniform(0, 2000)
z = random.uniform(0, 9)
# Get random s1, phi, panel
s1 = matrix.col(detector[0].get_pixel_lab_coord(
(x, y))).normalize() * s0_length
phi = scan.get_angle_from_array_index(z, deg=False)
panel = 0
# Calculate the bounding box
bbox = calculate_bbox(s1, z, panel)
# Create the XDS coordinate system
xcs = CoordinateSystem(m2, s0, s1, phi)
# Calculate the transform fraction
fraction = transform(bbox[4:], phi, xcs.zeta())
# Ensure the minimum and maximum are 0 < 1
fmax = flex.max(fraction)
fmin = flex.min(fraction)
assert fmax <= (
1.0 + 5e-15) and fmax > 0.0, "%.16f not between 0 and 1" % fmax
assert fmin >= 0.0 and fmin <= 1.0
# Ensure the fraction for each image frame adds up to 1.0 for
# all those frames completely within the grid
for j in range(1, fraction.all()[0] - 1):
tot = flex.sum(fraction[j:j + 1, :])
assert abs(tot - 1.0) < 1e-7
# Ensure the frames follow a progression through the grid. I.e,
# check that values increase then decrease and don't jump around
for j in range(fraction.all()[0]):
f = fraction[j:j + 1, :]
last = f[0]
rev = False
for i in range(1, len(f)):
curr = f[1]
if rev is False:
if curr < last:
rev = True
else:
assert curr <= last
last = curr
def test_map_forward_reverse(dials_data):
from dials.model.serialize import load
from dials.algorithms.profile_model.gaussian_rs.transform import MapFramesReverse
from dials.algorithms.profile_model.gaussian_rs.transform import MapFramesForward
from dials.algorithms.profile_model.gaussian_rs import BBoxCalculator3D
sequence = load.sequence(
dials_data("centroid_test_data").join("sweep.json").strpath)
# Get the models
beam = sequence.get_beam()
detector = sequence.get_detector()
gonio = sequence.get_goniometer()
scan = sequence.get_scan()
# Set the delta_divergence/mosaicity
n_sigma = 3
sigma_divergence = 0.060 * math.pi / 180
mosaicity = 0.154 * math.pi / 180
delta_divergence = n_sigma * sigma_divergence
delta_mosaicity = n_sigma * mosaicity
# Set the grid size
grid_size = (4, 4, 4)
# Create the E3 fraction object
transform_forward = MapFramesForward(
scan.get_array_range()[0],
scan.get_oscillation(deg=False)[0],
scan.get_oscillation(deg=False)[1],
mosaicity,
n_sigma,
grid_size[2],
)
# Create the E3 fraction object
transform_reverse = MapFramesReverse(
scan.get_array_range()[0],
scan.get_oscillation(deg=False)[0],
scan.get_oscillation(deg=False)[1],
mosaicity,
n_sigma,
grid_size[2],
)
# Create the bounding box calculator
calculate_bbox = BBoxCalculator3D(beam, detector, gonio, scan,
delta_divergence, delta_mosaicity)
from dials.algorithms.profile_model.gaussian_rs import CoordinateSystem
s0 = beam.get_s0()
m2 = gonio.get_rotation_axis()
s0_length = matrix.col(beam.get_s0()).length()
for i in range(100):
# Get random x, y, z
x = random.uniform(0, 2000)
y = random.uniform(0, 2000)
z = random.uniform(0, 9)
# Get random s1, phi, panel
s1 = matrix.col(detector[0].get_pixel_lab_coord(
(x, y))).normalize() * s0_length
phi = scan.get_angle_from_array_index(z, deg=False)
panel = 0
# Calculate the bounding box
bbox = calculate_bbox(s1, phi, panel)
# Create the XDS coordinate system
xcs = CoordinateSystem(m2, s0, s1, phi)
# Calculate the transform fraction
forward_fraction = transform_forward(bbox[4:], phi, xcs.zeta())
# Calculate the transform fraction
reverse_fraction = transform_reverse(bbox[4:], phi, xcs.zeta())
# Check the same points are non-zero
eps = 1e-7
for j in range(forward_fraction.all()[0]):
for i in range(forward_fraction.all()[1]):
if forward_fraction[j, i] > 0.0:
assert reverse_fraction[i, j] > 0.0
else:
assert reverse_fraction[i, j] < eps