红外与毫米波学报, 2004, 23 (3): 161, 网络出版: 2006-05-10
基于梯度优化法的连续波近红外光断层成像研究
INVESTIGATION OFCONTINUOUS WAVE NEAR INFRARED OPTICAL TOMOGRAPHY BASED ON GRADIENT OPTIMIZATION SCHEMES
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.仿真结果显示空间位置加权的优化算法可有效地用于连续波近红外光断层成像.
Abstract
Two gradient-basedoptimization schemes were investigated for continuous wave near infrared opticaltomography.The reason of slow convergence rate and low spatial resolution for conventionaloptimization schemes was analyzed. A spatial location weighted gradient-based optimizationscheme was adopted to reduce the computation burden and increase the reconstructionprecision. The reconstruction results confirm that the spatial location weightedoptimization method offers a more efficient approach to the continuous wave opticalimaging problem than conventional methods.
周俊, 张永红, 白净. 基于梯度优化法的连续波近红外光断层成像研究[J]. 红外与毫米波学报, 2004, 23(3): 161. 周俊, 张永红, 白净. INVESTIGATION OFCONTINUOUS WAVE NEAR INFRARED OPTICAL TOMOGRAPHY BASED ON GRADIENT OPTIMIZATION SCHEMES[J]. Journal of Infrared and Millimeter Waves, 2004, 23(3): 161.
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