def read_smv_image(image_file):
from boost.python import streambuf
from dxtbx import read_uint16, read_uint16_bs, is_big_endian
from scitbx.array_family import flex
header_size, header_dictionary = get_smv_header(image_file)
f = open(image_file, 'rb')
f.read(header_size)
if header_dictionary['BYTE_ORDER'] == 'big_endian':
big_endian = True
else:
big_endian = False
image_size = (int(header_dictionary['SIZE1']),
int(header_dictionary['SIZE2']))
if big_endian == is_big_endian():
raw_data = read_uint16(streambuf(f),
int(image_size[0] * image_size[1]))
else:
raw_data = read_uint16_bs(streambuf(f),
int(image_size[0] * image_size[1]))
raw_data.reshape(flex.grid(image_size[1], image_size[0]))
return raw_data
def get_raw_data(self):
"""Get the pixel intensities (i.e. read the image and return as a
flex array of integers.)"""
from boost.python import streambuf
from dxtbx import read_uint16, read_uint16_bs, is_big_endian
from scitbx.array_family import flex
assert len(self.get_detector()) == 1
image_pedestal = 40
panel = self.get_detector()[0]
size = panel.get_image_size()
f = FormatSMVADSCSN.open_file(self._image_file, "rb")
f.read(self._header_size)
if self._header_dictionary["BYTE_ORDER"] == "big_endian":
big_endian = True
else:
big_endian = False
if big_endian == is_big_endian():
raw_data = read_uint16(streambuf(f), int(size[0] * size[1]))
else:
raw_data = read_uint16_bs(streambuf(f), int(size[0] * size[1]))
# apply image pedestal, will result in *negative pixel values*
raw_data -= image_pedestal
image_size = panel.get_image_size()
raw_data.reshape(flex.grid(image_size[1], image_size[0]))
return raw_data
def get_raw_data(self):
'''Get the pixel intensities (i.e. read the image and return as a
flex array of integers.)'''
from boost.python import streambuf
from dxtbx import read_uint16, read_uint16_bs, is_big_endian
from scitbx.array_family import flex
f = self.open_file(self._image_file, 'rb')
f.read(self._header_size)
if self._header_dictionary['BYTE_ORDER'] == 'big_endian':
big_endian = True
else:
big_endian = False
if big_endian == is_big_endian():
raw_data = read_uint16(streambuf(f), int(512 * 512))
else:
raw_data = read_uint16_bs(streambuf(f), int(512 * 512))
image_size = (512, 512)
raw_data.reshape(flex.grid(image_size[1], image_size[0]))
# split into separate panels
self._raw_data = []
d = self.get_detector()
for panel in d:
xmin, ymin, xmax, ymax = self.coords[panel.get_name()]
self._raw_data.append(raw_data[ymin:ymax, xmin:xmax])
return tuple(self._raw_data)
def get_raw_data(self):
"""Get the pixel intensities (i.e. read the image and return as a
flex array of integers.)"""
from boost.python import streambuf
from dxtbx import read_uint16, read_uint16_bs, is_big_endian
from scitbx.array_family import flex
assert len(self.get_detector()) == 1
image_pedestal = int(self._header_dictionary["IMAGE_PEDESTAL"])
panel = self.get_detector()[0]
size = panel.get_image_size()
f = FormatSMVADSCSN.open_file(self._image_file, "rb")
f.read(self._header_size)
if self._header_dictionary["BYTE_ORDER"] == "big_endian":
big_endian = True
else:
big_endian = False
if big_endian == is_big_endian():
raw_data = read_uint16(streambuf(f), int(size[0] * size[1]))
else:
raw_data = read_uint16_bs(streambuf(f), int(size[0] * size[1]))
# apply image pedestal, will result in *negative pixel values*
raw_data -= image_pedestal
image_size = panel.get_image_size()
raw_data.reshape(flex.grid(image_size[1], image_size[0]))
return raw_data
def get_raw_data(self):
'''Get the pixel intensities (i.e. read the image and return as a
flex array of integers.)'''
from boost.python import streambuf
from dxtbx import read_uint16, read_uint16_bs, is_big_endian
from scitbx.array_family import flex
assert (len(self.get_detector()) == 1)
panel = self.get_detector()[0]
size = panel.get_image_size()
f = FormatSMVNOIR.open_file(self._image_file, 'rb')
f.read(self._header_size)
if self._header_dictionary['BYTE_ORDER'] == 'big_endian':
big_endian = True
else:
big_endian = False
if big_endian == is_big_endian():
raw_data = read_uint16(streambuf(f), int(size[0] * size[1]))
else:
raw_data = read_uint16_bs(streambuf(f), int(size[0] * size[1]))
image_size = panel.get_image_size()
raw_data.reshape(flex.grid(image_size[1], image_size[0]))
return raw_data
def get_raw_data(self):
'''Get the pixel intensities (i.e. read the image and return as a
flex array of integers.)'''
from boost.python import streambuf
from dxtbx import read_uint16, read_uint16_bs, is_big_endian
from scitbx.array_family import flex
assert(len(self.get_detector()) == 1)
panel = self.get_detector()[0]
size = panel.get_image_size()
f = FormatSMVADSC.open_file(self._image_file, 'rb')
f.read(self._header_size)
if self._header_dictionary['BYTE_ORDER'] == 'big_endian':
big_endian = True
else:
big_endian = False
if big_endian == is_big_endian():
raw_data = read_uint16(streambuf(f), int(size[0] * size[1]))
else:
raw_data = read_uint16_bs(streambuf(f), int(size[0] * size[1]))
image_size = panel.get_image_size()
raw_data.reshape(flex.grid(image_size[1], image_size[0]))
return raw_data
def get_raw_data(self):
'''Get the pixel intensities (i.e. read the image and return as a
flex array of integers.)'''
from boost.python import streambuf
from dxtbx import read_uint16, read_uint16_bs, is_big_endian
from scitbx.array_family import flex
f = self.open_file(self._image_file, 'rb')
f.read(self._header_size)
nx = int(self._header_dictionary['SIZE1']) # number of pixels
ny = int(self._header_dictionary['SIZE2']) # number of pixels
if self._header_dictionary['BYTE_ORDER'] == 'big_endian':
big_endian = True
else:
big_endian = False
if big_endian == is_big_endian():
raw_data = read_uint16(streambuf(f), int(nx * ny))
else:
raw_data = read_uint16_bs(streambuf(f), int(nx * ny))
# note that x and y are reversed here
raw_data.reshape(flex.grid(ny, nx))
self._raw_data = raw_data
return self._raw_data
def read_smv_image(image_file):
from boost.python import streambuf
from dxtbx import read_uint16, read_uint16_bs, is_big_endian
from scitbx.array_family import flex
header_size, header_dictionary = get_smv_header(image_file)
with open(image_file, "rb") as f:
f.seek(header_size)
if header_dictionary["BYTE_ORDER"] == "big_endian":
big_endian = True
else:
big_endian = False
image_size = (int(header_dictionary["SIZE1"]),
int(header_dictionary["SIZE2"]))
if big_endian == is_big_endian():
raw_data = read_uint16(streambuf(f),
int(image_size[0] * image_size[1]))
else:
raw_data = read_uint16_bs(streambuf(f),
int(image_size[0] * image_size[1]))
raw_data.reshape(flex.grid(image_size[1], image_size[0]))
return raw_data
def get_raw_data(self):
'''Get the pixel intensities (i.e. read the image and return as a
flex array of integers.)'''
from boost.python import streambuf
from dxtbx import read_uint16, read_uint16_bs, is_big_endian
from scitbx.array_family import flex
f = self.open_file(self._image_file, 'rb')
header_size = int(self.header_dict['HDRBLKS']) * 512
f.read(header_size)
# 16 bits per pixel
assert int(self.header_dict['NPIXELB'].split()[0]) == 2
nrows = int(self.header_dict['NROWS'].split()[0])
ncols = int(self.header_dict['NCOLS'].split()[0])
if is_big_endian():
raw_data = read_uint16_bs(streambuf(f), nrows * ncols)
else:
raw_data = read_uint16(streambuf(f), nrows * ncols)
image_size = (nrows, ncols)
raw_data.reshape(flex.grid(image_size[0], image_size[1]))
return raw_data
def time_it(path, buffer_size):
if (buffer_size is None):
buffer_size = streambuf.default_buffer_size
print "Buffer is %i bytes" % buffer_size
path = os.path.expanduser(path)
input = open(path, 'r')
inp_buf = streambuf(python_file_obj=input, buffer_size=buffer_size)
ext.time_read(input.name, inp_buf)
output = open("tmp_tst_python_streambuf", "w")
out_buf = streambuf(python_file_obj=output, buffer_size=buffer_size)
ext.time_write(output.name, out_buf)
def time_it(path, buffer_size):
if (buffer_size is None):
buffer_size = streambuf.default_buffer_size
print("Buffer is %i bytes" % buffer_size)
path = os.path.expanduser(path)
input = open(path, 'r')
inp_buf = streambuf(python_file_obj=input, buffer_size=buffer_size)
ext.time_read(input.name, inp_buf)
output = open("tmp_tst_python_streambuf", "w")
out_buf = streambuf(python_file_obj=output, buffer_size=buffer_size)
ext.time_write(output.name, out_buf)
def _get_endianic_raw_data(self, size):
big_endian = self._header_dictionary["BYTE_ORDER"] == "big_endian"
with self.open_file(self._image_file, "rb") as fh:
fh.seek(self._header_size)
if big_endian == is_big_endian():
raw_data = read_uint16(streambuf(fh), int(size[0] * size[1]))
else:
raw_data = read_uint16_bs(streambuf(fh), int(size[0] * size[1]))
# note that x and y are reversed here
raw_data.reshape(flex.grid(size[1], size[0]))
return raw_data
def get_raw_data(self):
"""Get the pixel intensities"""
from boost.python import streambuf
try:
from dxtbx.ext import read_uint16_bs
except ImportError:
from dxtbx import read_uint16_bs
from scitbx.array_family import flex
f = FormatTimepixRaw512x512.open_file(self._image_file, "rb")
f.read(self._header_size)
raw_data = read_uint16_bs(streambuf(f), 512 * 512)
image_size = (512, 512)
raw_data.reshape(flex.grid(image_size[1], image_size[0]))
self._raw_data = []
d = self.get_detector()
for panel in d:
xmin, ymin, xmax, ymax = self.coords[panel.get_name()]
self._raw_data.append(raw_data[ymin:ymax, xmin:xmax])
return tuple(self._raw_data)
def exercise_partial_read(self): self.create_file_object(mode='r') words = ext.test_read(streambuf(self.file_object), "partial read") assert words == "Coding, should, " trailing = self.file_object.read() assert trailing == " be fun" self.file_object.close()
def exercise_seek_and_read(self):
self.create_instrumented_file_object(mode='r')
words = ext.test_read(streambuf(self.file_object), "read and seek")
assert words == "should, should, uld, ding, fun, [ eof ]"
n = streambuf.default_buffer_size
soughts = self.file_object.seek_call_log
# stringent tests carefully crafted to make sure the seek-in-buffer
# optimisation works as expected
# C.f. the comment in the C++ function actual_write_test
assert soughts[-1] == (-4,2)
soughts = soughts[:-1]
if n >= 14:
assert soughts == []
else:
assert soughts[0] == (6,0)
soughts = soughts[1:]
if 8 <= n <= 13:
assert len(soughts) == 1 and self.only_seek_cur(soughts)
elif n == 7:
assert len(soughts) == 2 and self.only_seek_cur(soughts)
else:
assert soughts[0] == (6,0)
soughts = soughts[1:]
assert self.only_seek_cur(soughts)
if n == 4: assert len(soughts) == 1
else: assert len(soughts) == 2
self.file_object.close()
def exercise_partial_read(self):
self.create_file_object(mode='r')
words = ext.test_read(streambuf(self.file_object), "partial read")
assert words == "Coding, should, "
trailing = self.file_object.read()
assert trailing == " be fun"
self.file_object.close()
def _read_cbf_image(self):
from cbflib_adaptbx import uncompress
start_tag = binascii.unhexlify("0c1a04d5")
with self.open_file(self._image_file, "rb") as fh:
data = fh.read()
data_offset = data.find(start_tag) + 4
cbf_header = self._parse_cbf_header(
data[: data_offset - 4].decode("ascii", "ignore")
)
if cbf_header["byte_offset"]:
pixel_values = uncompress(
packed=data[data_offset : data_offset + cbf_header["size"]],
fast=cbf_header["fast"],
slow=cbf_header["slow"],
)
elif cbf_header["no_compression"]:
from boost.python import streambuf
from dxtbx import read_int32
from scitbx.array_family import flex
assert len(self.get_detector()) == 1
with self.open_file(self._image_file) as f:
f.read(data_offset)
pixel_values = read_int32(streambuf(f), cbf_header["length"])
pixel_values.reshape(flex.grid(cbf_header["slow"], cbf_header["fast"]))
else:
raise ValueError(
"Compression of type other than byte_offset or none is not supported (contact authors)"
)
return pixel_values
def exercise_seek_and_read(self):
self.create_instrumented_file_object(mode='r')
words = ext.test_read(streambuf(self.file_object), "read and seek")
assert words == "should, should, uld, ding, fun, [ eof ]"
n = streambuf.default_buffer_size
soughts = self.file_object.seek_call_log
# stringent tests carefully crafted to make sure the seek-in-buffer
# optimisation works as expected
# C.f. the comment in the C++ function actual_write_test
assert soughts[-1] == (-4, 2)
soughts = soughts[:-1]
if n >= 14:
assert soughts == []
else:
assert soughts[0] == (6, 0)
soughts = soughts[1:]
if 8 <= n <= 13:
assert len(soughts) == 1 and self.only_seek_cur(soughts)
elif n == 7:
assert len(soughts) == 2 and self.only_seek_cur(soughts)
else:
assert soughts[0] == (6, 0)
soughts = soughts[1:]
assert self.only_seek_cur(soughts)
if n == 4: assert len(soughts) == 1
else: assert len(soughts) == 2
self.file_object.close()
def channel_pixels(wavelength_A, flux, N, UMAT_nm, Amatrix_rot,
fmodel_generator, local_data):
fmodel_generator.reset_wavelength(wavelength_A)
fmodel_generator.reset_specific_at_wavelength(
label_has="FE1",
tables=local_data.get("Fe_oxidized_model"),
newvalue=wavelength_A)
fmodel_generator.reset_specific_at_wavelength(
label_has="FE2",
tables=local_data.get("Fe_reduced_model"),
newvalue=wavelength_A)
print("USING scatterer-specific energy-dependent scattering factors")
sfall_channel = fmodel_generator.get_amplitudes()
SIM = nanoBragg(detpixels_slowfast=(3000, 3000),
pixel_size_mm=0.11,
Ncells_abc=(N, N, N),
wavelength_A=wavelength_A,
verbose=0)
SIM.adc_offset_adu = 10 # Do not offset by 40
SIM.mosaic_spread_deg = 0.05 # interpreted by UMAT_nm as a half-width stddev
SIM.mosaic_domains = 25 # 77 seconds. With 100 energy points, 7700 seconds (2 hours) per image
SIM.distance_mm = 141.7
SIM.set_mosaic_blocks(UMAT_nm)
#SIM.detector_thick_mm = 0.5 # = 0 for Rayonix
#SIM.detector_thicksteps = 1 # should default to 1 for Rayonix, but set to 5 for CSPAD
#SIM.detector_attenuation_length_mm = default is silicon
# get same noise each time this test is run
SIM.seed = 1
SIM.oversample = 1
SIM.wavelength_A = wavelength_A
SIM.polarization = 1
SIM.default_F = 0
SIM.Fhkl = sfall_channel
SIM.Amatrix_RUB = Amatrix_rot
SIM.xtal_shape = shapetype.Gauss # both crystal & RLP are Gaussian
SIM.progress_meter = False
# flux is always in photons/s
SIM.flux = flux
SIM.exposure_s = 1.0 # so total fluence is e12
# assumes round beam
SIM.beamsize_mm = 0.003 #cannot make this 3 microns; spots are too intense
temp = SIM.Ncells_abc
print("Ncells_abc=", SIM.Ncells_abc)
SIM.Ncells_abc = temp
from libtbx.development.timers import Profiler
P = Profiler("nanoBragg")
if add_spots_algorithm is "NKS":
from boost.python import streambuf # will deposit printout into dummy StringIO as side effect
SIM.add_nanoBragg_spots_nks(streambuf(StringIO()))
elif add_spots_algorithm is "JH":
SIM.add_nanoBragg_spots()
elif add_spots_algorithm is "cuda":
SIM.add_nanoBragg_spots_cuda()
else:
raise Exception("unknown spots algorithm")
del P
return SIM
def read_cbf_image(self, cbf_image):
from cbflib_adaptbx import uncompress
import binascii
start_tag = binascii.unhexlify("0c1a04d5")
data = self.open_file(cbf_image, "rb").read()
data_offset = data.find(start_tag) + 4
cbf_header = data[:data_offset - 4]
fast = 0
slow = 0
length = 0
byte_offset = False
no_compression = False
for record in cbf_header.split("\n"):
if "X-Binary-Size-Fastest-Dimension" in record:
fast = int(record.split()[-1])
elif "X-Binary-Size-Second-Dimension" in record:
slow = int(record.split()[-1])
elif "X-Binary-Number-of-Elements" in record:
length = int(record.split()[-1])
elif "X-Binary-Size:" in record:
size = int(record.split()[-1])
elif "conversions" in record:
if "x-CBF_BYTE_OFFSET" in record:
byte_offset = True
elif "x-CBF_NONE" in record:
no_compression = True
assert length == fast * slow
if byte_offset:
pixel_values = uncompress(packed=data[data_offset:data_offset +
size],
fast=fast,
slow=slow)
elif no_compression:
from boost.python import streambuf
try:
from dxtbx.ext import read_int32
except ImportError:
from dxtbx import read_int32
from scitbx.array_family import flex
assert len(self.get_detector()) == 1
f = self.open_file(self._image_file)
f.read(data_offset)
pixel_values = read_int32(streambuf(f), int(slow * fast))
pixel_values.reshape(flex.grid(slow, fast))
else:
raise ValueError(
"Uncompression of type other than byte_offset or none "
" is not supported (contact authors)")
return pixel_values
def exercise_write_failure(self):
import platform
if (platform.platform().find("redhat-8.0") >= 0):
return # avoid Abort
self.create_file_object(mode='r')
try:
ext.test_write(streambuf(self.file_object), "write")
except IOError, err:
pass
def exercise_write_failure(self):
import platform
if (platform.platform().find("redhat-8.0") >= 0):
return # avoid Abort
self.create_file_object(mode='r')
try:
ext.test_write(streambuf(self.file_object), "write")
except IOError, err:
pass
def __call__(self, N, UMAT_nm, Amatrix_rot, sfall_channel):
SIM = nanoBragg(detpixels_slowfast=(3000, 3000),
pixel_size_mm=0.11,
Ncells_abc=(N, N, N),
wavelength_A=self.wavlen[0],
verbose=0)
SIM.adc_offset_adu = 10 # Do not offset by 40
SIM.mosaic_domains = n_mosaic_domains # 77 seconds. With 100 energy points, 7700 seconds (2 hours) per image
SIM.mosaic_spread_deg = mosaic_spread_deg # interpreted by UMAT_nm as a half-width stddev
SIM.distance_mm = distance_mm
SIM.set_mosaic_blocks(UMAT_nm)
#SIM.detector_thick_mm = 0.5 # = 0 for Rayonix
#SIM.detector_thicksteps = 1 # should default to 1 for Rayonix, but set to 5 for CSPAD
#SIM.detector_attenuation_length_mm = default is silicon
# get same noise each time this test is run
SIM.seed = 1
SIM.oversample = 1
SIM.polarization = 1
SIM.default_F = 0
SIM.Fhkl = sfall_channel
SIM.Amatrix_RUB = Amatrix_rot
SIM.xtal_shape = shapetype.Gauss # both crystal & RLP are Gaussian
SIM.progress_meter = False
# flux is always in photons/s
#SIM.flux=0.8E10 # number of photons per 100 ps integrated pulse, 24-bunch APS
SIM.flux = 0.8E12 # number of photons per 100 ps integrated pulse, 24-bunch APS
SIM.xray_source_wavelengths_A = self.wavlen
SIM.xray_source_intensity_fraction = self.norm_intensity
SIM.xray_source_XYZ = self.source_XYZ
SIM.exposure_s = 1.0 # so total fluence is e12
# assumes round beam
SIM.beamsize_mm = 0.003 #cannot make this 3 microns; spots are too intense
temp = SIM.Ncells_abc
print("Ncells_abc=", SIM.Ncells_abc)
SIM.Ncells_abc = temp
from libtbx.development.timers import Profiler
P = Profiler("nanoBragg")
if add_spots_algorithm is "NKS":
print("USING NKS")
from boost.python import streambuf # will deposit printout into dummy StringIO as side effect
SIM.add_nanoBragg_spots_nks(streambuf(StringIO()))
elif add_spots_algorithm is "JH":
print("USING JH")
SIM.add_nanoBragg_spots()
elif add_spots_algorithm is "cuda":
print("USING cuda")
SIM.add_nanoBragg_spots_cuda()
else:
raise Exception("unknown spots algorithm")
del P
return SIM
def channel_pixels(simparams=None,single_wavelength_A=None,single_flux=None,N=None,UMAT_nm=None, \
Amatrix_rot=None,sfall_channel=None,rank=None):
# print("## inside channel wavlength/flux = ", single_wavelength_A, single_flux/simparams.flux)
SIM = nanoBragg(detpixels_slowfast=(simparams.detector_size_ny,simparams.detector_size_nx),pixel_size_mm=simparams.pixel_size_mm,\
Ncells_abc=(N,N,N),wavelength_A=single_wavelength_A,verbose=0)
SIM.adc_offset_adu = 10 # Do not offset by 40
SIM.seed = 0
SIM.mosaic_spread_deg = simparams.mosaic_spread_deg # interpreted by UMAT_nm as a half-width stddev
SIM.mosaic_domains = simparams.mosaic_domains # 77 seconds. With 100 energy points, 7700 seconds (2 hours) per image
SIM.distance_mm = simparams.distance_mm
SIM.set_mosaic_blocks(UMAT_nm)
######################
SIM.beamcenter_convention = convention.ADXV
SIM.beam_center_mm = (simparams.beam_center_x_mm,
simparams.beam_center_y_mm) # 95.975 96.855
######################
# get same noise each time this test is run
SIM.seed = 0
SIM.oversample = simparams.oversample
SIM.wavelength_A = single_wavelength_A
SIM.polarization = simparams.polarization
SIM.default_F = simparams.default_F
SIM.Fhkl = sfall_channel
SIM.Amatrix_RUB = Amatrix_rot
SIM.xtal_shape = shapetype.Gauss # both crystal & RLP are Gaussian
SIM.progress_meter = False
# flux is always in photons/s
SIM.flux = single_flux
SIM.exposure_s = simparams.exposure_s # so total fluence is e12
# assumes round beam
SIM.beamsize_mm = simparams.beamsize_mm #cannot make this 3 microns; spots are too intense
temp = SIM.Ncells_abc
SIM.Ncells_abc = temp
# SIM.show_params()
add_spots_algorithm = simparams.add_spots_algorithm
if add_spots_algorithm == "NKS":
from boost.python import streambuf # will deposit printout into dummy StringIO as side effect
SIM.add_nanoBragg_spots_nks(streambuf(StringIO()))
elif add_spots_algorithm == "JH":
SIM.add_nanoBragg_spots()
elif add_spots_algorithm == "cuda":
devices_per_node = int(os.environ["DEVICES_PER_NODE"])
SIM.device_Id = rank % devices_per_node
#if rank==7:
# os.system("nvidia-smi")
SIM.add_nanoBragg_spots_cuda()
else:
raise Exception("!!! unknown spots algorithm")
return SIM
def exercise_read_failure(self):
self.create_file_object(mode='r')
self.file_object.close()
try:
ext.test_read(streambuf(self.file_object), "read")
except ValueError:
pass
else:
raise Exception_expected
self.file_object.close()
def exercise_read_failure(self):
self.create_file_object(mode='r')
self.file_object.close()
try:
ext.test_read(streambuf(self.file_object), "read")
except ValueError:
pass
else:
raise Exception_expected
self.file_object.close()
def sim_rois(self,
rois=None,
reset=True,
cuda=False,
omp=False,
add_water=False,
boost=1,
add_spots=True,
show_params=False):
if show_params:
self.SIM2.show_params()
#if self.crystal_size_mm is not None:
print(" Mosaic domain size mm = %.3g" %
np.power(self.mosaic_domain_volume, 1 / 3.))
print(" Spot scale = %.3g" % self.SIM2.spot_scale)
if rois is None:
rois = [self.FULL_ROI]
if add_spots:
for roi in rois:
self.SIM2.region_of_interest = roi
if cuda:
self.SIM2.add_nanoBragg_spots_cuda()
elif omp:
from boost.python import streambuf # will deposit printout into dummy StringIO as side effect
from six.moves import StringIO
self.SIM2.add_nanoBragg_spots_nks(streambuf(StringIO()))
else:
self.SIM2.add_nanoBragg_spots()
self.SIM2.raw_pixels = self.SIM2.raw_pixels * boost
if add_water: # add water for full panel, ignoring ROI
water_scatter = flex.vec2_double([(0, 2.57), (0.0365, 2.58),
(0.07, 2.8), (0.12, 5),
(0.162, 8), (0.2, 6.75),
(0.18, 7.32), (0.216, 6.75),
(0.236, 6.5), (0.28, 4.5),
(0.3, 4.3), (0.345, 4.36),
(0.436, 3.77), (0.5, 3.17)])
self.SIM2.Fbg_vs_stol = water_scatter
self.SIM2.amorphous_density_gcm3 = 1
self.SIM2.amorphous_molecular_weight_Da = 18
self.SIM2.amorphous_sample_thick_mm = self.amorphous_sample_thick_mm
self.SIM2.region_of_interest = self.FULL_ROI
self.SIM2.add_background()
img = self.SIM2.raw_pixels.as_numpy_array()
if reset:
self.SIM2.raw_pixels *= 0
self.SIM2.region_of_interest = self.FULL_ROI
return img
def get_raw_data(self):
"""Read the data - assuming it is streaming 4-byte unsigned ints following the
header..."""
assert len(self.get_detector()) == 1
size = self.get_detector()[0].get_image_size()
f = self.open_file(self._image_file)
f.read(int(self._header_dictionary["HEADER_BYTES"]))
raw_data = read_int32(streambuf(f), int(size[0] * size[1]))
raw_data.reshape(flex.grid(size[1], size[0]))
return raw_data
def read_smv_image(image_file):
header_size, header_dictionary = FormatSMV.get_smv_header(image_file)
with open(image_file, "rb") as f:
f.seek(header_size)
big_endian = header_dictionary["BYTE_ORDER"] == "big_endian"
image_size = (int(header_dictionary["SIZE1"]),
int(header_dictionary["SIZE2"]))
if big_endian == dxtbx.ext.is_big_endian():
raw_data = dxtbx.ext.read_uint16(
streambuf(f), int(image_size[0] * image_size[1]))
else:
raw_data = dxtbx.ext.read_uint16_bs(
streambuf(f), int(image_size[0] * image_size[1]))
raw_data.reshape(flex.grid(image_size[1], image_size[0]))
return raw_data
def get_raw_data(self):
"""Get the pixel intensities (i.e. read the image and return as a
flex array of integers.)"""
from boost.python import streambuf
from dxtbx import read_uint16, read_uint16_bs, is_big_endian
from scitbx.array_family import flex
assert len(self.get_detector()) == 1
image_pedestal = 1
try:
image_pedestal = float(self._header_dictionary["ADC_OFFSET"])
except KeyError:
pass
panel = self.get_detector()[0]
size = panel.get_image_size()
f = FormatSMVJHSim.open_file(self._image_file, "rb")
f.read(self._header_size)
if self._header_dictionary["BYTE_ORDER"] == "big_endian":
big_endian = True
else:
big_endian = False
if big_endian == is_big_endian():
raw_data = read_uint16(streambuf(f), int(size[0] * size[1]))
else:
raw_data = read_uint16_bs(streambuf(f), int(size[0] * size[1]))
# apply image pedestal, will result in *negative pixel values*
# this is a horrible idea since raw_data is unsigned
# see all instances of image_pedestal in dxtbx
raw_data -= int(image_pedestal)
image_size = panel.get_image_size()
raw_data.reshape(flex.grid(image_size[1], image_size[0]))
return raw_data
def read_tiff_image(image_file):
# currently have no non-little-endian machines...
width, height, depth, order, header_bytes = get_tiff_header(image_file)
image_size = (width, height)
header_size = 4096
with open(image_file, "rb") as fh:
fh.seek(header_size)
raw_data = dxtbx.ext.read_uint16(streambuf(fh),
int(image_size[0] * image_size[1]))
raw_data.reshape(flex.grid(image_size[1], image_size[0]))
return raw_data
def sim_rois(self,
rois,
reset=True,
cuda=False,
omp=False,
add_water=False,
add_noise=False,
water_par=None,
noise_par=None,
boost=1,
add_spots=True):
if add_spots:
for roi in rois:
self.SIM2.region_of_interest = roi
if cuda:
self.SIM2.add_nanoBragg_spots_cuda()
elif omp:
from boost.python import streambuf # will deposit printout into dummy StringIO as side effect
from six.moves import StringIO
self.SIM2.add_nanoBragg_spots_nks(streambuf(StringIO()))
else:
self.SIM2.add_nanoBragg_spots()
self.SIM2.raw_pixels = self.SIM2.raw_pixels * boost
if add_water:
water_scatter = flex.vec2_double([(0, 2.57), (0.0365, 2.58),
(0.07, 2.8), (0.12, 5),
(0.162, 8), (0.2, 6.75),
(0.18, 7.32), (0.216, 6.75),
(0.236, 6.5), (0.28, 4.5),
(0.3, 4.3), (0.345, 4.36),
(0.436, 3.77), (0.5, 3.17)])
self.SIM2.Fbg_vs_stol = water_scatter
self.SIM2.amorphous_sample_thick_mm = 0.004 # typical GDVN
self.SIM2.amorphous_density_gcm3 = 1
self.SIM2.amorphous_molecular_weight_Da = 18
self.SIM2.exposure_s = 1.0 # multiplies flux x exposure
self.SIM2.region_of_interest = self.FULL_ROI
self.SIM2.add_background()
if add_noise:
self.SIM2.add_noise()
img = self.SIM2.raw_pixels.as_numpy_array()
if reset:
self.SIM2.raw_pixels *= 0
self.SIM2.region_of_interest = self.FULL_ROI
return img
def get_raw_data(self, index):
from boost.python import streambuf
from scitbx.array_family import flex
data_offset = self._header_dictionary['DataOffsetArray'][index]
with FormatSER.open_file(self._image_file, 'rb') as f:
f.seek(data_offset)
d = {}
d['CalibrationOffsetX'] = struct.unpack('<d', f.read(8))[0]
d['CalibrationDeltaX'] = struct.unpack('<d', f.read(8))[0]
d['CalibrationElementX'] = struct.unpack('<I', f.read(4))[0]
d['CalibrationOffsetY'] = struct.unpack('<d', f.read(8))[0]
d['CalibrationDeltaY'] = struct.unpack('<d', f.read(8))[0]
d['CalibrationElementY'] = struct.unpack('<I', f.read(4))[0]
d['DataType'] = struct.unpack('<H', f.read(2))[0]
if d['DataType'] == 6:
from dxtbx import read_int32 as read_pixel
elif d['DataType'] == 5:
from dxtbx import read_int16 as read_pixel
elif d['DataType'] == 3:
from dxtbx import read_uint32 as read_pixel
elif d['DataType'] == 2:
from dxtbx import read_uint16 as read_pixel
elif d['DataType'] == 1:
from dxtbx import read_uint8 as read_pixel
else:
raise RuntimeError(
'Image {0} data is of an unsupported type'.format(index +
1))
d['ArraySizeX'] = struct.unpack('<I', f.read(4))[0]
d['ArraySizeY'] = struct.unpack('<I', f.read(4))[0]
nelts = d['ArraySizeX'] * d['ArraySizeY']
raw_data = read_pixel(streambuf(f), nelts)
# Check image size is as expected (same as the first image)
if d['ArraySizeX'] != self._header_dictionary['ArraySizeX']:
raise RuntimeError(
'Image {0} has an unexpected array size in X'.format(index +
1))
if d['ArraySizeY'] != self._header_dictionary['ArraySizeY']:
raise RuntimeError(
'Image {0} has an unexpected array size in Y'.format(index +
1))
image_size = (d['ArraySizeX'], d['ArraySizeY'])
raw_data.reshape(flex.grid(image_size[1], image_size[0]))
return raw_data
def get_raw_data(self):
"""Get the pixel intensities (i.e. read the image and return as a
flex array of integers.)"""
# currently have no non-little-endian machines...
assert len(self.get_detector()) == 1
image_size = self.get_detector()[0].get_image_size()
with self.open_file(self._image_file) as fh:
fh.seek(self._header_size)
raw_data = read_uint16(streambuf(fh),
int(image_size[0] * image_size[1]))
raw_data.reshape(flex.grid(image_size[1], image_size[0]))
return raw_data
def get_raw_data(self):
'''Read the data - assuming it is streaming 4-byte unsigned ints following the
header...'''
from boost.python import streambuf
from dxtbx import read_int32
from scitbx.array_family import flex
assert (len(self.get_detector()) == 1)
size = self.get_detector()[0].get_image_size()
f = self.open_file(self._image_file)
f.read(int(self._header_dictionary['HEADER_BYTES']))
raw_data = read_int32(streambuf(f), int(size[0] * size[1]))
raw_data.reshape(flex.grid(size[1], size[0]))
return raw_data
def get_raw_data(self):
'''Read the data - assuming it is streaming 4-byte unsigned ints following the
header...'''
from boost.python import streambuf
from dxtbx import read_int32
from scitbx.array_family import flex
assert(len(self.get_detector()) == 1)
size = self.get_detector()[0].get_image_size()
f = self.open_file(self._image_file)
f.read(int(self._header_dictionary['HEADER_BYTES']))
raw_data = read_int32(streambuf(f), int(size[0] * size[1]))
raw_data.reshape(flex.grid(size[1], size[0]))
return raw_data
def get_raw_data(self, index):
from boost.python import streambuf
from scitbx.array_family import flex
data_offset = self._header_dictionary["DataOffsetArray"][index]
with FormatSER.open_file(self._image_file, "rb") as f:
f.seek(data_offset)
d = {}
d["CalibrationOffsetX"] = struct.unpack("<d", f.read(8))[0]
d["CalibrationDeltaX"] = struct.unpack("<d", f.read(8))[0]
d["CalibrationElementX"] = struct.unpack("<I", f.read(4))[0]
d["CalibrationOffsetY"] = struct.unpack("<d", f.read(8))[0]
d["CalibrationDeltaY"] = struct.unpack("<d", f.read(8))[0]
d["CalibrationElementY"] = struct.unpack("<I", f.read(4))[0]
d["DataType"] = struct.unpack("<H", f.read(2))[0]
if d["DataType"] == 6:
read_pixel = dxtbx.ext.read_int32
elif d["DataType"] == 5:
read_pixel = dxtbx.ext.read_int16
elif d["DataType"] == 3:
read_pixel = dxtbx.ext.read_uint32
elif d["DataType"] == 2:
read_pixel = dxtbx.ext.read_uint16
elif d["DataType"] == 1:
read_pixel = dxtbx.ext.read_uint8
else:
raise RuntimeError(
"Image {} data is of an unsupported type".format(index +
1))
d["ArraySizeX"] = struct.unpack("<I", f.read(4))[0]
d["ArraySizeY"] = struct.unpack("<I", f.read(4))[0]
nelts = d["ArraySizeX"] * d["ArraySizeY"]
raw_data = read_pixel(streambuf(f), nelts)
# Check image size is as expected (same as the first image)
if d["ArraySizeX"] != self._header_dictionary["ArraySizeX"]:
raise RuntimeError(
"Image {} has an unexpected array size in X".format(index + 1))
if d["ArraySizeY"] != self._header_dictionary["ArraySizeY"]:
raise RuntimeError(
"Image {} has an unexpected array size in Y".format(index + 1))
image_size = (d["ArraySizeX"], d["ArraySizeY"])
raw_data.reshape(flex.grid(image_size[1], image_size[0]))
return raw_data
def read_tiff_image(image_file):
# currently have no non-little-endian machines...
from boost.python import streambuf
from dxtbx import read_uint16
from scitbx.array_family import flex
width, height, depth, order, header_bytes = get_tiff_header(image_file)
image_size = (width, height)
header_size = 4096
f = open(image_file)
f.read(header_size)
raw_data = read_uint16(streambuf(f), int(image_size[0] * image_size[1]))
raw_data.reshape(flex.grid(image_size[1], image_size[0]))
return raw_data
def get_raw_data(self):
'''Get the pixel intensities (i.e. read the image and return as a
flex array of integers.)'''
# currently have no non-little-endian machines...
from boost.python import streambuf
from dxtbx import read_uint16
from scitbx.array_family import flex
assert(len(self.get_detector()) == 1)
size = self.get_detector()[0].get_image_size()
f = FormatSMV.open_file(self._image_file)
f.read(self._header_size)
raw_data = read_uint16(streambuf(f), int(size[0] * size[1]))
image_size = self.get_detector()[0].get_image_size()
raw_data.reshape(flex.grid(image_size[1], image_size[0]))
return raw_data
def read_from_stdin():
written = ext.test_read(streambuf(sys.stdin), "read")
assert written == "Veni, Vidi, Vici, [ fail, eof ]", written
def exercise_read(self): self.create_file_object(mode='r') words = ext.test_read(streambuf(self.file_object), "read") assert words == "Coding, should, be, fun, [ fail, eof ]" self.file_object.close()