结构光透过生物组织、沙尘等强散射介质时历经多重散射,会改变原有相位信息和传播方向,破坏相干性,最后形成散斑。本文主要针对结构光重构特征和适用性进行分析,以条形结构光作为入射光,透过散射介质后,分别运用直接求逆法、相位共轭法和TVAL3法对其进行重构,并分析不同测量噪声水平下,三种方法对条形结构光的重构效果。仿真结果表明: 测量噪声水平为0时,直接求逆法能得到较完美的重构效果; 存在测量噪声且测量噪声水平小于0.025 I时,TVAL3法能较好实现重构,而相位共轭法重构效果一直较差。同时,也运用三种方法实现了单点、三点的点光源重构。

The structured light experiences multiple scattering when passing through biological tissue,dust and other strong scattering medium.The original phase and direction of propagation are changed,and coherence is destroyed,too.Finally,speckle is formed.In this paper,the characteristics and applicability of the reconstruction of structured light are analyzed.Stripe structured light is used to pass through scattering medium as the incident light.Direct inverse method,phase conjugation method and TVAL3 method are adopted to restructure the incident light.The reconstruction results of three methods are analyzed under different measurement noise levels.Simulation results show that: the reconstruction result of direct inverse method is superior to the others when the measurement noise level is 0.And the reconstruction result of TVAL3 method is more perfect when measurement noise exists and under level 0.025 I.However,the reconstruction result of phase conjugation method is poor all through.Meanwhile,the reconstruction of single point and three points light source are realized by the three methods in this paper.