本文選題：成像系統(tǒng) + 關(guān)聯(lián)成像�。� 參考：《光學(xué)學(xué)報(bào)》2017年05期

【摘要】：基于稀疏約束的鬼成像光譜相機(jī),能夠通過(guò)單次曝光獲得目標(biāo)場(chǎng)景的三維空間光譜數(shù)據(jù)立方體。但是由于不同波長(zhǎng)的散斑場(chǎng)在探測(cè)器的同一位置處,使得儀器的光譜分辨率和信噪比受到限制。為了解決上述問(wèn)題,提出了利用平場(chǎng)光柵分光將不同波長(zhǎng)的光場(chǎng)在探測(cè)面上錯(cuò)開(kāi)一定距離的系統(tǒng),實(shí)現(xiàn)了基于平場(chǎng)光柵的稀疏約束鬼成像高光譜相機(jī)。通過(guò)對(duì)系統(tǒng)成像過(guò)程的理論推導(dǎo),得到了系統(tǒng)的關(guān)聯(lián)函數(shù),并通過(guò)實(shí)驗(yàn)和數(shù)值模擬驗(yàn)證了理論推導(dǎo)結(jié)果。在保證原先光譜相機(jī)優(yōu)點(diǎn)的同時(shí),基于稀疏約束的鬼成像高光譜相機(jī)可以分別調(diào)控光譜分辨率和空間分辨率,實(shí)現(xiàn)可控的信噪比。此外,還能夠根據(jù)不同波長(zhǎng)的光場(chǎng)特性來(lái)優(yōu)化測(cè)量矩陣,從而提高圖像恢復(fù)質(zhì)量。
[Abstract]:The ghost imaging spectral camera based on sparse constraints can obtain the three-dimensional spatial spectral data cube of the target scene by single exposure. However, the spectral resolution and signal to noise ratio of the instrument are limited because the speckle fields of different wavelengths are in the same position. In order to solve the above problems, a flat field grating is proposed. The sparse constrained ghost imaging hyperspectral camera based on the flat field grating is realized by using the light field of different wavelengths on the detection surface. The correlation function of the system is obtained by theoretical derivation of the system imaging process. The theoretical derivation is verified by experiments and numerical simulations. At the same time, the ghost imaging hyperspectral camera based on sparse constraints can control spectral resolution and spatial resolution to achieve a controllable signal to noise ratio. In addition, the measurement matrix can be optimized according to the optical field characteristics of different wavelengths, thus improving the quality of image recovery.
【作者單位】： 中國(guó)科學(xué)院上海光學(xué)精密機(jī)械研究所量子光學(xué)重點(diǎn)實(shí)驗(yàn)室;中國(guó)科學(xué)院大學(xué);
【基金】：國(guó)家863計(jì)劃(2013AA122902)
【分類號(hào)】：TB852.1

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