单像素探测频谱重构成像理论分析

发布时间：2018-03-24 18:30

本文选题：计算成像　切入点：频谱重建　出处：《物理学报》2017年03期

【摘要】：迄今为止,基于频谱重建的单像素探测成像技术没有提供一个比较全面的理论基础,因此,本文对此成像技术进行了比较详细的理论分析.分析了若干因素对成像重建的影响,包括对来自成像物体散射光的直接探测,或间接探测即物体的散射光顺次经过多个漫射面漫射后由探测器探测;多通道探测即物体的散射光分别沿几个不同路径、各自经几个漫射面顺次漫反射后由探测器探测;探测器尺寸和位置.理论分析结果表明,无论是直接探测还是间接探测,无论是单通道探测还是多通道探测,只要能接收物体的散射光,就能够重构成像;探测器面积对成像重建的影响相当于位于不同位置的多个点探测器探测重建像的叠加.为了加快成像重建速度,导出了三步相移频谱重建公式.对表面光强反射率均匀的物体,采用三步相移技术,给出了成像重建结果.
[Abstract]:Up to now, the single pixel detection imaging technique based on spectrum reconstruction has not provided a more comprehensive theoretical basis. Therefore, this paper makes a detailed theoretical analysis of the imaging technology, and analyzes the influence of several factors on the imaging reconstruction. Including direct detection of scattered light from an imaging object, or indirect detection, that is, the scattering light of an object is detected by a detector after diffusing through a number of diffusing surfaces; the multi-channel detection means that the scattered light of an object follows several different paths, The size and position of the detector, the size and position of the detector, the theoretical analysis results show that, whether direct or indirect detection, whether single-channel detection or multi-channel detection, An image can be reconstructed as long as it can receive scattered light from an object; the effect of the detector area on the imaging reconstruction is equivalent to the superposition of the reconstructed images of multiple point detectors located at different locations. In order to speed up the imaging reconstruction, The three-step phase-shift spectrum reconstruction formula is derived. The imaging reconstruction results for objects with uniform surface intensity reflectivity are obtained by using three-step phase-shift technique.
【作者单位】：华南农业大学应用物理系;
【基金】：广东省大学生创新创业训练项目(批准号:201610564482)资助的课题~~
【分类号】：TP391.41

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