xdesign.acquisition

Functions:

Beam(p1, p2[, size])	Beam (thick line) in 2-D cartesian space.
Probe(p1, p2[, size])
sinogram(sx, sy, phantom[, noise])	Generates sinogram given a phantom.
angleogram(sx, sy, phantom[, noise])	Generates angleogram given a phantom.
raster_scan(sx, sy)	Provides a beam list for raster-scanning.
angle_scan(sx, sy)	Provides a beam list for raster-scanning.

class xdesign.acquisition.Beam(p1, p2, size=0)

Bases: xdesign.geometry.Line

Beam (thick line) in 2-D cartesian space.

It is defined by two distinct points.

p1

Point

p2

Point

size

scalar, optional

Size of the beam.

half_space

Returns the half space polytope respresentation of the infinite beam.

class xdesign.acquisition.Probe(p1, p2, size=0)

Bases: xdesign.acquisition.Beam

measure(phantom, noise=False)

Return the probe measurement given phantom. When noise is > 0, poisson noise is added to the returned measurement.

record()

translate(dx)

Translates beam along its normal direction.

xdesign.acquisition.sinogram(sx, sy, phantom, noise=False)

Generates sinogram given a phantom.

Parameters:

• sx (int) – Number of rotation angles.
• sy (int) – Number of detection pixels (or sample translations).
• phantom (Phantom)

Returns:

ndarray – Sinogram.

xdesign.acquisition.angleogram(sx, sy, phantom, noise=False)

Generates angleogram given a phantom.

Parameters:

• sx (int) – Number of rotation angles.
• sy (int) – Number of detection pixels (or sample translations).
• phantom (Phantom)

Returns:

ndarray – Angleogram.

xdesign.acquisition.raster_scan(sx, sy)

Provides a beam list for raster-scanning.

Parameters:

• sx (int) – Number of rotation angles.
• sy (int) – Number of detection pixels (or sample translations).

Yields:

Probe

xdesign.acquisition.angle_scan(sx, sy)

Provides a beam list for raster-scanning.

Parameters:

• sx (int) – Number of rotation angles.
• sy (int) – Number of detection pixels (or sample translations).

Yields:

Probe