【摘要】：為了提升光學(xué)遙感成像系統(tǒng)的空間分辨率,提出了基于線陣探測器錯位成像的超分辨遙感技術(shù),給出了線陣探測器錯位排列方式以及獲得錯位低分辨率圖像后的超分辨重建算法。根據(jù)光學(xué)相機(jī)成像原理,構(gòu)建了代價函數(shù)用于正則化的迭代求解。實(shí)驗(yàn)中針對超分辨因子為2的情形,進(jìn)行了錯位成像仿真以及超分辨重建。實(shí)驗(yàn)結(jié)果表明,在采用4組線陣探測器錯位的情況下,傳統(tǒng)插值投影方法獲得的重建圖像在等效的奈奎斯特頻率處,系統(tǒng)調(diào)制傳遞函數(shù)(MTF)計(jì)算值為0.01,而所提基于正則化的方法 MTF為0.28,相比原始單列探測器在奈奎斯特頻率處MTF為0.13也有較大提升。無論是圖像視覺效果還是MTF統(tǒng)計(jì)結(jié)果都驗(yàn)證了所提方法的有效性。該技術(shù)在遙感成像領(lǐng)域具有較大的工程應(yīng)用價值。
[Abstract]:In order to improve the spatial resolution of optical remote sensing imaging system, a super-resolution remote sensing technique based on linear array detector transposition imaging is proposed. The misalignment of linear array detectors and the super-resolution reconstruction algorithm after obtaining the misaligned low-resolution images are presented. Based on the principle of optical camera imaging, a cost function is constructed for iterative solution of regularization. In the experiment, the dislocation imaging simulation and super-resolution reconstruction are carried out for the case where the super resolution factor is 2. The experimental results show that the reconstructed images obtained by the traditional interpolation projection method are at the equivalent Nyquist frequency when four groups of linear array detectors are used. The calculated value of the modulation transfer function (MTF) is 0.01, while the regularization based method MTF is 0.28, which is much higher than that of the original single-row detector (MTF = 0.13 at Nyquist frequency). Both the image visual effect and the MTF statistical results verify the effectiveness of the proposed method. This technique has great engineering application value in remote sensing imaging field.
【作者單位】： 上海衛(wèi)星工程研究所;
【分類號】：TP751

【相似文獻(xiàn)】

相關(guān)期刊論文 前3條

1 張約品,夏海平,李佐宜,沈德芳,干福熹;GdFeCo/TbFeCo磁超分辨磁光記錄薄膜研究[J];光子學(xué)報(bào);2005年09期

2 袁震宇;王正明;王光新;王衛(wèi)威;;SAR圖像點(diǎn)目標(biāo)超分辨正則化方法的簡化計(jì)算[J];中國空間科學(xué)技術(shù);2008年01期

3 ;[J];;年期

相關(guān)會議論文 前2條

1 喬延利;葉松;方黎;洪津;方勇華;荀毓龍;;超分辨空間外差光譜成像技術(shù)[A];第六屆成像光譜技術(shù)與應(yīng)用研討會文集[C];2006年

2 余慶選;于琳;韓新海;李艷秋;廖源;王冠中;廖源;方容川;;超分辨近場結(jié)構(gòu)中Sb薄膜的開關(guān)特性的機(jī)理探討[A];第九屆全國發(fā)光學(xué)術(shù)會議摘要集[C];2001年

相關(guān)博士學(xué)位論文 前2條

1 劉儉;超分辨移相共焦和復(fù)色差動共焦掃描顯微技術(shù)及理論[D];哈爾濱工業(yè)大學(xué);2009年

2 楊學(xué)峰;遙感圖象頻域和空域超分辨重建技術(shù)研究[D];哈爾濱工業(yè)大學(xué);2011年

，

本文編號：2202438