def _(physical_model, projection_data, image):
image = transpose(image)
result = physical_model.op.maplors(image=image.data,
grid=list(image.grid[::-1]),
center=list(image.center[::-1]),
size=list(image.size[::-1]),
lors=transpose(projection_data.lors),
lors_value=projection_data.values)
return transpose(Image(result, image.center[::-1], image.size[::-1]))
def _(physical_model, image, projection_data):
image = transpose(image)
result = physical_model.op.projection(
lors=transpose(projection_data.lors),
image=image.data,
grid=list(image.grid[::-1]),
center=list(image.center[::-1]),
size=list(image.size[::-1]),
tof_bin=physical_model.config[physical_model.KEYS.CONFIG.TOF_BIN],
tof_sigma2=physical_model.config[
physical_model.KEYS.CONFIG.TOF_SIGMA2])
return ListModeData(projection_data.lors, result)
def _(physical_model, projection_data, image):
image = transpose(image)
result = physical_model.op.backprojection(
image=image.data,
grid=list(image.grid[::-1]),
center=list(image.center[::-1]),
size=list(image.size[::-1]),
lors=transpose(projection_data.lors),
lors_value=projection_data.values,
tof_bin=physical_model.config[physical_model.KEYS.CONFIG.TOF_BIN],
tof_sigma2=physical_model.config[
physical_model.KEYS.CONFIG.TOF_SIGMA2])
return transpose(Image(result, image.center[::-1], image.size[::-1]))
def _(physical_model, projection_data, image):
image = transpose(image)
result = physical_model.op.backprojection(
image=image.data,
sino=projection_data.data,
grid=list(image.grid[::-1]),
center=list(image.center[::-1]),
size=list(image.size[::-1]),
block_grid = list(physical_model.config[physical_model.KEYS.CONFIG.BLOCK_GRID][::-1]),
block_size = list(physical_model.config[physical_model.KEYS.CONFIG.BLOCK_SIZE][::-1]),
block_center = list(physical_model.config[physical_model.KEYS.CONFIG.BLOCK_CENTER][::-1]),
inner_radius = physical_model.config[physical_model.KEYS.CONFIG.INNER_RADIUS],
outer_radius = physical_model.config[physical_model.KEYS.CONFIG.OUTER_RADIUS],
nb_rings = physical_model.config[physical_model.KEYS.CONFIG.NB_RINGS],
nb_blocks_per_ring = physical_model.config[physical_model.KEYS.CONFIG.NB_BLOCKS_PER_RING],
gap = physical_model.config[physical_model.KEYS.CONFIG.GAP])
return transpose(Image(result, image.center[::-1], image.size[::-1]))
def _(model, projection_data, image):
result = []
# print("geometry sigma2 flag:",model.config[model.KEYS.GEO_SIGMA2_FLAG])
for a in model.AXIS:
# for a in ['x', 'z']:
image_axis = transpose(image, model.perm(a))
backproj = Op.get_module().maplors(
image=image_axis.data,
grid=list(image_axis.grid[::-1]),
center=list(image_axis.center[::-1]),
size=list(image_axis.size[::-1]),
lors=transpose(projection_data[a].lors),
lors_value=projection_data[a].values,
kernel_width=model.config[model.KEYS.KERNEL_WIDTH],
geo_sigma2_flag=model.config[model.KEYS.GEO_SIGMA2_FLAG])
result.append(transpose(backproj, model.perm_back(a)))
return Image(sum_(result), image.center, image.size)
def _(model, image, projection_data):
result = {}
# print("tof_sigma2: ", model.config[model.KEYS.TOF_SIGMA2])
for a in model.AXIS:
# for a in ('x','y'):
image_axis = transpose(image, model.perm(a))
result[a] = Op.get_module().projection(
lors=transpose(projection_data[a].lors),
image=image_axis.data,
grid=list(image_axis.grid[::-1]),
center=list(image_axis.center[::-1]),
size=list(image_axis.size[::-1]),
kernel_width=model.config[model.KEYS.KERNEL_WIDTH],
geo_sigma2_flag=model.config[model.KEYS.GEO_SIGMA2_FLAG],
tof_bin=model.config[model.KEYS.TOF_BIN],
tof_sigma2=model.config[model.KEYS.TOF_SIGMA2])
return ListModeDataSplit(
*
[ListModeData(projection_data[a].lors, result[a]) for a in model.AXIS])
def _(t, perm=None):
if perm is None:
perm = [2, 1, 0]
center = [t.center[p] for p in perm]
size = [t.size[p] for p in perm]
return Image(transpose(t.data, perm), center=center, size=size)
