Tomographic Reconstruction with Membrane-Plate Hybrid Prior
Bayesian reconstruction or maximum a posteriori (MAP) method has its superiority over others with regard to image quality and convergence. In this paper, a MRF quadratic hybrid prior, which combines the two priors quadratic membrane (QM) prior and quadratic plate (QP) prior, is proposed. A threshold estimation method based on statistical classification is devised to facilitate a selectively utilization of QM prior, QP prior in the quadratic hybrid prior. Application of the proposed QHM prior in emission reconstruction with joint estimation algorithm is also given. Visional and quantitative comparisons of the results of experiments prove the new proposed hybrid priors good performance in lowering noise effect and preserving edges.
Bayesian Reconstruction quadratic membrane (QM) prior quadratic plate (QP) prior quadratic hybrid priors
Yong Yan Jian Shen
Medical Engineering Support Center Chinese PLA (Peoples Liberation Army) General Hospital Beijing,C The School of Computer Science and Engineering ChangShu Institute of Technology Jiangshu,China
国际会议
北京
英文
1-4
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）