tomosipo.geometry.ConeVectorGeometry

class tomosipo.geometry.ConeVectorGeometry(*, shape, src_pos, det_pos, det_v, det_u)[source]

Documentation for ConeVectorGeometry

A class for representing cone vector geometries.

__init__(*, shape, src_pos, det_pos, det_v, det_u)[source]

Create an arbitrarily oriented cone-beam geometry

Parameters:

shape – The detector shape in pixels. If tuple, the order is (height, width). Else the pixel has the same number of pixels in the u and v direction.
src_pos – A numpy array of dimension (num_positions, 3) with the source positions in (z, y, x) order.
det_pos – A numpy array of dimension (num_positions, 3) with the detector center positions in (z, y, x) order.
det_v – A numpy array of dimension (num_positions, 3) with the vector pointing from the detector (0, 0) to (1, 0) pixel (up).
det_u – A numpy array of dimension (num_positions, 3) with the vector pointing from the detector (0, 0) to (0, 1) pixel (sideways).

Methods

`__init__`(*, shape, src_pos, det_pos, det_v, ...)	Create an arbitrarily oriented cone-beam geometry
`from_astra`()
`project_point`(point)	Projects point onto detectors
`rescale_det`(scale)	Rescale detector pixels
`reshape`(new_shape)	Reshape detector pixels without changing detector size
`to_astra`()	Convert geometry to astra geometry
`to_vec`()	Return a vector geometry of the current geometry
`to_vol`()	Returns a volume vector geometry representing the detector

Attributes

`angles`	The angles from which projections are acquired.
`corners`	Returns a vector with the corners of each detector
`det_normal`	The detector normal vectors of the geometry.
`det_pos`	The detector positions of the geometry.
`det_shape`	The shape of the detector.
`det_size`	The size of the detector.
`det_sizes`	The size of each detector.
`det_u`	The detector u-vectors of the geometry.
`det_v`	The detector v-vectors of the geometry.
`is_cone`	Is this geometry a cone-beam geometry?
`is_parallel`	Is this geometry a parallel-beam geometry?
`is_vec`	Is this a vector geometry?
`lower_left_corner`	Returns a vector with the positions of the lower-left corner the detector
`num_angles`	The number of angles in the projection geometry
`num_steps`	The number of orientations in the geometry
`ray_dir`	The ray direction of the geometry.
`src_pos`	The source positions of the geometry.