Localizing DART using the reconstructed residual error
Faculty of Sciences. Physics
1st International Conference on Tomography of Materials and Structures (ICTMS), Ghent, Belgium
University of Antwerp
The reconstructed residual error was recently introduced as a localized measure of the accuracy of a segmented tomogram. In this paper, we use the reconstructed residual error during the reco nstruction , and adapt the recently proposed Discrete Algebraic Reconstruction Technique ( DART ) to only enforce discreteness in regions where this is appropriate. Simulation experiments show that the reconstructed residual error can detect non - homogeneous regions . Based on this observation, the DART algorithm is modified to allow the reconstruction of objects that are only partially discrete . The experiments show that the reconstruction quality of both homogeneous and non - homogeneous region s is improved.