Iterative beam hardening correction for multi-material objects
In this paper, we propose an iterative beam hardening correction method that is applicable for the case with multiple materials.By introducing some moderate assumptions on the scanned objects, the beam hardening correction problem is converted into a nonlinear system problem, which is then solved iteratively.The main feature of the proposed method is that it corrects the beam hardening artifacts for all the materials composing the scanned object.Another feature of the proposed method is that it has a high degree of parallelism, which means that the method is suitable for acceleration on parallel systems.Moreover, the proposed method converges fast, 2 or 3 round of iterations are enough to obtain a satisfactory result.Numerical experiments with both simulated data and real data verifies its validity.
poly-energetic X-rays beam-hardening correction iterative reconstruction
Zhao Yunsong Li Mengfei Zhang Peng
School of Mathematical Sciences, Capital Normal University, Beijing 100048, China;Beijing Higher Ins School of Mathematical Sciences, Capital Normal University, Beijing 100048, China;Beijing Higher Ins
国内会议
贵阳
英文
63-71
2015-09-01（万方平台首次上网日期，不代表论文的发表时间）