| Table of Contents |
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Summary
| AstraReconGpu | |||||
| Process category | Brief description | Computational demand for typical tomography data (low, medium, high) | Comment(s) | Reference(s) | Common alternative process(es) |
|---|---|---|---|---|---|
| reconstructor | To reconstruct normalised and conditioned data. | Depends on the reconstruction algorithm selected. | Uses GPU resources. | The Astra Toolbox | |
Parameters
Brief description |
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| Code Block | ||
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>>> disp -avv
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1) AstraReconGpu(savu.plugins.reconstructions.astra_recons.astra_recon_gpu)
Wrapper around the Astra toolbox for gpu reconstruction
1) init_vol : None
Dataset to use as volume initialiser (doesn't currently work with preview).
2) preview : []
A slice list of required frames.
3) log : True
Take the log of the data before reconstruction (True or False).
4) algorithm : FBP_CUDA
Reconstruction type (FBP_CUDA|SIRT_CUDA| SART_CUDA (not currently
working)|CGLS_CUDA|FP_CUDA|BP_CUDA| SIRT3D_CUDA|CGLS3D_CUDA).
5) n_iterations : 1
Number of Iterations - only valid for iterative algorithms.
6) res_norm : False
Output the residual norm at each iteration (Error in the solution - iterative
solvers only).
7) centre_of_rotation : 0.0
Centre of rotation to use for the reconstruction.
8) FBP_filter : ram-lak
The FBP reconstruction filter type (none|ram-lak| shepp-
logan|cosine|hamming|hann|tukey|lanczos|triangular|gaussian| barlett-
hann|blackman|nuttall|blackman-harris|blackman-nuttall| flat-top|kaiser|parzen).
9) in_datasets : []
Create a list of the dataset(s) to process.
10) ratio : 0.95
Ratio of the masks diameter in pixels to the smallest edge size along given axis.
11) out_datasets : []
Create a list of the dataset(s) to create.
12) centre_pad : False
Pad the sinogram to centre it in order to fill the reconstructed volume ROI for
asthetic purposes - only available for selected algorithms and will be ignored if
unavailable (warning: This will increase the size of the data and the time to
compute the reconstruction.
13) outer_pad : False
Pad the sinogram to fill the reconstructed volume for asthetic purposes - only
available for selected algorithms and if centre_pad is True (warning: This will
significantly increase the size of the data and the time to compute the
reconstruction).
14) force_zero : [None, None]
Set any values in the reconstructed image outside of this range to zero.
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>>> |
Additional notes |
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| Item | Parameter name | Parameter format | Example(s) | Comment(s) | |
|---|---|---|---|---|---|
| Parameter value | Effect | ||||
| 1 | init_vol | ||||
| 2 | preview | ||||
| 3 | log | The log parameter needs to be set to False, if PaganinFilter is applied beforehand. | |||
| 4 | algorithm | ||||
| 5 | n_iterations | ||||
| 6 | res_norm | ||||
| 7 | centre_of_rotation | The default value of the centre_of_rotation parameter is 0.0, which normally needs to be manually modified to a more appropriate value or, if VoCentering is used beforehand in the process chain, then this parameter is automatically set to a value determined by this auto-centring process. | |||
| 8 | FBP_filter | ||||
| 9 | in_datasets | ||||
| 10 | ratio | ||||
| 11 | out_datasets | ||||
| 12 | centre_pad | ||||
| 13 | outer_pad | ||||
| 14 | force_zero | ||||
...