摘要
研究了两种基于梯度的优化算法用于连续波近红外光断层成像的情况 .分析了现有优化算法存在的收敛速度慢 ,空间分辨率低等缺点的产生原因 .为减少计算量并提高重构精度 ,采用了一种空间位置加权的基于梯度的优化算法 .
Two gradient-based optimization schemes were investigated for continuous wave near infrared optical tomography. The reason of slow convergence rate and low spatial resolution for conventional optimization schemes was analyzed. A spatial location weighted gradient-based optimization scheme was adopted to reduce the computation burden and increase the reconstruction precision. The reconstruction results confirm that the spatial location weighted optimization method offers a more efficient approach to the continuous wave optical imaging problem than conventional methods.
出处
《红外与毫米波学报》
SCIE
EI
CAS
CSCD
北大核心
2004年第3期161-163,168,共4页
Journal of Infrared and Millimeter Waves
基金
TheprojectsupportedbyMajorResearchPlanofNationalNaturalScienceFundationofChina (No .90 2 0 90 2 9)andBasicResearchFundationofTsinghuaUniversity (No .JC19990 2 1)
