單像素探測(cè)頻譜重構(gòu)成像理論分析
發(fā)布時(shí)間:2018-03-24 18:30
本文選題:計(jì)算成像 切入點(diǎn):頻譜重建 出處:《物理學(xué)報(bào)》2017年03期
【摘要】:迄今為止,基于頻譜重建的單像素探測(cè)成像技術(shù)沒有提供一個(gè)比較全面的理論基礎(chǔ),因此,本文對(duì)此成像技術(shù)進(jìn)行了比較詳細(xì)的理論分析.分析了若干因素對(duì)成像重建的影響,包括對(duì)來自成像物體散射光的直接探測(cè),或間接探測(cè)即物體的散射光順次經(jīng)過多個(gè)漫射面漫射后由探測(cè)器探測(cè);多通道探測(cè)即物體的散射光分別沿幾個(gè)不同路徑、各自經(jīng)幾個(gè)漫射面順次漫反射后由探測(cè)器探測(cè);探測(cè)器尺寸和位置.理論分析結(jié)果表明,無論是直接探測(cè)還是間接探測(cè),無論是單通道探測(cè)還是多通道探測(cè),只要能接收物體的散射光,就能夠重構(gòu)成像;探測(cè)器面積對(duì)成像重建的影響相當(dāng)于位于不同位置的多個(gè)點(diǎn)探測(cè)器探測(cè)重建像的疊加.為了加快成像重建速度,導(dǎo)出了三步相移頻譜重建公式.對(duì)表面光強(qiáng)反射率均勻的物體,采用三步相移技術(shù),給出了成像重建結(jié)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.
【作者單位】: 華南農(nóng)業(yè)大學(xué)應(yīng)用物理系;
【基金】:廣東省大學(xué)生創(chuàng)新創(chuàng)業(yè)訓(xùn)練項(xiàng)目(批準(zhǔn)號(hào):201610564482)資助的課題~~
【分類號(hào)】:TP391.41
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