Image Reconstruction from Projections Based on Wavelet Decomposition

摘要

In image reconstruction, the most commonly used methods are filtered backprojection algorithms (FBP), derived from different implementations of the inverse transform. In this paper, we discuss FBP based on wavelet decomposition. Multiresolution image reconstruction can be performed using wavelet decomposition. Because of the fact that the projections are expanded in a given wavelet basis, we can calculate the interpolations needed for FBP in advance so that the computation can be reduced.