pytomography.transforms.SPECT.additive_term#

Module Contents#

Classes#

AdditiveTermTransform

The parent class for all transforms used in reconstruction (obj2obj, im2im, obj2im). Subclasses must implement the __call__ method.
class pytomography.transforms.SPECT.additive_term.AdditiveTermTransform(additive_term)[source]#

Bases: pytomography.transforms.Transform

The parent class for all transforms used in reconstruction (obj2obj, im2im, obj2im). Subclasses must implement the __call__ method.

Parameters:

  • device (str) – Pytorch device used for computation

  • additive_term (float) –

forward(proj, padded=True)[source]#

Adds an additive term to the projection data. :param proj: Projection data :type proj: torch.Tensor :param padded: Whether or not the projection data is padded. Defaults to True. :type padded: bool, optional

Returns:

Projection data with additive term added

Return type:

torch.Tensor

Parameters:

  • proj (torch.Tensor) –

  • padded (bool) –

backward(proj, padded=True)[source]#

Returns the projection data without the additive term. :param proj: Projection data :type proj: torch.Tensor :param padded: Whether or not the projection data is padded. Defaults to True. :type padded: bool, optional

Returns:

Projection data without additive term

Return type:

torch.Tensor

Parameters:

  • proj (torch.Tensor) –

  • padded (bool) –