tomosipo.geometry.VolumeVectorGeometry

class tomosipo.geometry.VolumeVectorGeometry(shape, pos, w=(1, 0, 0), v=(0, 1, 0), u=(0, 0, 1))

Documentation for VolumeVectorGeometry

__init__(shape, pos, w=(1, 0, 0), v=(0, 1, 0), u=(0, 0, 1))

Create an arbitrarily oriented volume geometry

Like the parallel and cone vector geometries, the volume vector geometry can be arbitrarily oriented and positioned.

The position describes the center of the volume. The vectors w, v, u describe the coordinate frame of a single voxel, just like u and v do for detector pixels of vector projection geometries.

Parameters:

• shape – The shape of the volume in voxels.

• pos – A numpy array of dimension (num_steps, 3) describing the center of the volume in world-coordinates (z, y, x). You may also pass a 3-tuple or a scalar.

• w – A numpy array of dimension (num_steps, 3) describing the w basis element in (z, y, x) coordinates. Default is (1, 0, 0).

• v – A numpy array of dimension (num_steps, 3) describing the v basis element in (z, y, x) coordinates. Default is (0, 1, 0).

• u – A numpy array of dimension (num_steps, 3) describing the u basis element in (z, y, x) coordinates. Default is (0, 0, 1).

Methods

__init__(shape, pos[, w, v, u])	Create an arbitrarily oriented volume geometry
reshape(new_shape)	Change the number of voxels without changing volume size
to_vec()	Returns a volume vector geometry

Attributes

corners	Returns a vector with the corners of the volume
lower_left_corner	Returns a vector with the positions of the lower-left corner the object
num_steps	The number of orientations and positions of this volume
pos
shape
size	Returns the absolute size of the volume
sizes	Returns the absolute sizes of the volume
u
v
voxel_size	The voxel size of the volume
voxel_sizes	The voxel sizes of the volume
w