flocculus / gram-filtering-and-sinogram-interpolation-for-pixel-basis-in-parallel-beam-x-ray-ct-reconstruction

The key aspect of parallel-beam X-ray CT is forward and back projection, but its computational burden continues to be an obstacle for applications. We propose to use pixel-basis to improve the performance of related algorithms. In addition, the detector blur effect can be included in our model efficiently. The improvements in speed and quality for back projection and iterative reconstruction are shown in our experiments on both analytical phantoms and real CT images.

Parallel-beam X-ray CT Reconstruction by Using Pixel-basis

This is a matlab implemention of the reconstruction algorithm proposed in the paper parallel-beam X-ray CT reconstruction by using pixel-basis.

Usage

Run the test_recon.m file to test the reconstruction time, SNR and SSIM.

Run the test_backprojection.m file to test the backprojection SNR and SSIM.

Test Result