Bin Mode Estimation Methods for Compton Camera Imaging
Instrumentation and Methods for Astrophysics
2016-03-29 v2
Abstract
We study the image reconstruction problem of a Compton camera which consists of semiconductor detectors. The image reconstruction is formulated as a statistical estimation problem. We employ a bin-mode estimation (BME) and extend an existing framework to a Compton camera with multiple scatterers and absorbers. Two estimation algorithms are proposed: an accelerated EM algorithm for the maximum likelihood estimation (MLE) and a modified EM algorithm for the maximum a posteriori (MAP) estimation. Numerical simulations demonstrate the potential of the proposed methods.
Cite
@article{arxiv.1312.4291,
title = {Bin Mode Estimation Methods for Compton Camera Imaging},
author = {Shiro Ikeda and Hirokazu Odaka and Makoto Uemura and Tadayuki Takahashi and Shin Watanabe and Shin'ichiro Takeda},
journal= {arXiv preprint arXiv:1312.4291},
year = {2016}
}
Comments
18 pages, 8 figures, submitted for publication in Nuclear Inst. and Methods in Physics Research, A