CT Parallel-Beam Imaging

This project contains the code for CT parallel beam imaging using MATLAB mex files.

It contains code for forward projection and will soon include code for backward projection.

The code is designed for the MATLAB mex C and C++ APIs.

Files with the C++ API have an underscore at the end of their names.

The C API has better backward compatibility and documentation.

The C++ API integrates new C++11 features and requires MATLAB 2018a or newer.

All code assumes MATLAB version R2018a or higher and C++11 is used on a CPU with 64bit architecture .

A CMake file is included for easy use on IDEs.

Known Issues.

1. The files cannot be compiled independently of the MATLAB mex function.
   They can only be compiled in MATLAB using the mex function.
2. The C API does not allow direct memory allocation onto C++ std::vector objects.
   This requires additional memory copies and allocations, making the code inefficient.
3. The code has not been tested on older platforms.
4. On Ubuntu, the libstdc++.so.6. file may cause issues with compilation.
   Change its name to libstdc++.so.6.old to solve compilation issues.