XVIII Brazilian Symposium on Computer Graphics and Image Processing (SIBGRAPI'05)
A Hybrid Estimation Theoretic-POCS Method for Tomographic Image Reconstruction
Natal, Rio Grande do Norte, Brazil
October 09-October 12
ISBN: 0-7695-2389-7
We present in this work a new method for the tomographic reconstruction with Poisson noise corrupted projections. The reconstruction method is a hybrid estimation theoretic-POCS (Projection Onto Convex Sets) method performed by first estimating the noisy projections using Anscombe Transformation, Discrete Wavelet Transform and pointwise Wiener filter and subsequently reconstructing the images through a parallel POCS method. The use of a previous filtering of the projections imposes a tighter restriction on the observation of the POCS method, allowing a better reconstruction, with a very little increase in computational cost.
Citation:
Fernando V. Salina, Nelson D. A. Mascarenhas, "A Hybrid Estimation Theoretic-POCS Method for Tomographic Image Reconstruction," sibgrapi, pp.220-224, XVIII Brazilian Symposium on Computer Graphics and Image Processing (SIBGRAPI'05), 2005