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2-D Tomographic Reconstruction Demo

version 1.6.1.0 (668 KB) by Ligong Han
Matlab demo for 2-D tomographic reconstruction

17 Downloads

Updated 23 Dec 2017

GitHub view license on GitHub

There are two main methods for tomographic reconstruction: one is based on Radon transform and its inverse transform such as filtered back-projection (FBP), another is based on solving linear algebra equations such as algebraic reconstruction technique (ART).
This toolbox includes tools for creating projections and reconstructing the image from projections:
tomo_projection_2d, computes projections of a given image;
build_weight_matrix, builds weighting factor matrix used for algebraic methods;
tomo_reconstruction_bp, reconstructs the image from its projections using BP method;
tomo_reconstruction_fbp, reconstructs the image from its projections using FBP method;
tomo_reconstruction_sart, reconstructs the image from its projections using SART method;
tomo_reconstruction_lsqr, reconstructs the image from its projections, equations are solved by calling the build-in lsqr function.
See demo.m for details.

Cite As

Ligong Han (2020). 2-D Tomographic Reconstruction Demo (https://github.com/phymhan/matlab-tomo-2d), GitHub. Retrieved .

Comments and Ratings (10)

There are file dependencies (imtest and impad) that are not described in the scripts or documentation. Without these files, the functions cannot be run.

Nick Tsui

I am getting the following error:
two files are missing in the directory: imtest and bone01. Does anyone know where I could find these.

There are some missing functions as 'tomo_reconstruction_sart_im'. The demo cannot run easily.

ZI JIA

vpaniza

I'm having trouble with the SART method, it doesn't converge when I try to run it. Does anyone have a demo like the one given for the ART method?
Thanks!

Why the method using ART/SART get images all black?

Chen Lin

Albert

Robust, concise, intelligible code for forward and backforward projection image reconstruction.
Excellent!
Greatly appreciate Dr. Han's efforts of writing this code.

Lei Fu

Updates

1.6.1.0

- removed art

1.6.0.0

- updates high-pass filter

1.6.0.0

Bug fixes in demo

1.6.0.0

- added a function 'imcrop_tomo' to crop the reconstructed image to the same size as the original image;
- enclosed a test function which illustrates the process of computing weighting factor matrix.

1.5.0.0

Change the diameter calculated in 'tomo_projection_2d' by adding 2, so that it will match the value computed from 'build_weight_matrix'.

1.4.0.0

- updated descriptions;
- fixed errors in art_solver.

1.3.0.0

- rearranged files
- rewrote demos
- added instructions

1.2.0.0

A more accurate method of building weight matrix

MATLAB Release Compatibility
Created with R2012a
Compatible with any release
Platform Compatibility
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