def compute_projection_matrix(projdirs, N, kern, kernsize, rad, projdirtype='dirs', sym=None, onlyRs=False, **kwargs):
projdirs = np.asarray(projdirs, dtype=np.float32)
if projdirtype == 'dirs':
# Input is a set of projection directions
dirhash = hash(projdirs.tostring())
if onlyRs and dirhash in precomputed_Rs:
Rs = precomputed_Rs[dirhash]
else:
Rs = np.vstack(
[geometry.rotmat3D_dir(d)[:, 0:2].reshape((1, 3, 2)) for d in projdirs])
if onlyRs:
precomputed_Rs[dirhash] = Rs
elif projdirtype == 'rots':
# Input is a set of rotation matrices mapping image space to protein
# space
Rs = projdirs
else:
assert False, 'Unknown projdirtype, must be either dirs or rots'
if sym is None:
symRs = None
else:
symRs = np.vstack([np.require(R, dtype=np.float32).reshape(
(1, 3, 3)) for R in sym.get_rotations()])
if onlyRs:
return Rs
else:
return sincint.compute_interpolation_matrix(Rs, N, N, rad, kern, kernsize, symRs)
def compute_inplanerot_matrix(thetas,
N,
kern,
kernsize,
rad,
N_src=None,
onlyRs=False):
dirhash = hash(thetas.tostring())
if N_src is None:
N_src = N
scale = 1
else:
scale = float(N_src) / N
if onlyRs and dirhash in precomputed_RIs:
Rs = precomputed_RIs[dirhash]
else:
Rs = n.vstack([
scale * geom.rotmat2D(n.require(th, dtype=n.float32)).reshape(
(1, 2, 2)) for th in thetas
])
if onlyRs:
precomputed_RIs[dirhash] = Rs
if onlyRs:
return Rs
else:
return sincint.compute_interpolation_matrix(Rs, N, N_src, rad, kern,
kernsize, None)
def compute_inplanerot_matrix(thetas,N,kern,kernsize,rad,N_src=None,onlyRs = False):
dirhash = hash(thetas.tostring())
if N_src is None:
N_src = N
scale = 1
else:
scale = float(N_src)/N
if onlyRs and dirhash in precomputed_RIs:
Rs = precomputed_RIs[dirhash]
else:
Rs = n.vstack([scale*geom.rotmat2D(n.require(th,dtype=n.float32)).reshape((1,2,2)) for th in thetas])
if onlyRs:
precomputed_RIs[dirhash] = Rs
if onlyRs:
return Rs
else:
return sincint.compute_interpolation_matrix(Rs,N,N_src,rad,kern,kernsize,None)
def compute_projection_matrix(projdirs,
N,
kern,
kernsize,
rad,
projdirtype='dirs',
sym=None,
onlyRs=False,
**kwargs):
projdirs = np.asarray(projdirs, dtype=np.float32)
if projdirtype == 'dirs':
# Input is a set of projection directions
dirhash = hash(projdirs.tostring())
if onlyRs and dirhash in precomputed_Rs:
Rs = precomputed_Rs[dirhash]
else:
Rs = np.vstack([
geometry.rotmat3D_dir(d)[:, 0:2].reshape((1, 3, 2))
for d in projdirs
])
if onlyRs:
precomputed_Rs[dirhash] = Rs
elif projdirtype == 'rots':
# Input is a set of rotation matrices mapping image space to protein
# space
Rs = projdirs
else:
assert False, 'Unknown projdirtype, must be either dirs or rots'
if sym is None:
symRs = None
else:
symRs = np.vstack([
np.require(R, dtype=np.float32).reshape((1, 3, 3))
for R in sym.get_rotations()
])
if onlyRs:
return Rs
else:
return sincint.compute_interpolation_matrix(Rs, N, N, rad, kern,
kernsize, symRs)