计算机科学 ›› 2014, Vol. 41 ›› Issue (10): 19-22.doi: 10.11896/j.issn.1002-137X.2014.10.004
徐其志,高峰
XU Qi-zhi and GAO Feng
摘要： 随着遥感技术的快速发展,越来越多的成像卫星可采集同时相的全色和多光谱图像。通常,多光谱图像的分辨率低于全色图像,但实际应用中人们更迫切需要提升多光谱图像的分辨率。当前,研究人员已提出了大量的图像融合方法来解决这个问题,但依然存在光谱失真、细节模糊等问题。此外,真实遥感图像的尺寸较大,现有融合方法难以满足实际应用的高时效要求。为此,提出了基于比值变换的全色与多光谱图像高保真融合方法。根据全色与多光谱图像分辨率之比,该方法对全色图像先下采样,再上采样,生成全色降质图像；同时,对多光谱图像进行上采样,得到多光谱降质图像；然后,计算全色与其降质图像的比值,将多光谱降质图像乘以该比值生成融合图像。实验表明,本方法的保真效果好,性能优于对比方法。
| [1] Aplin P,Atkinson P M,Curran P J．Fine spatial resolution satellite sensors for the next decade[J]．International Journal of Remote Sensing,1997,18(18):3873-3881 [2] Pohl C,van Genderen J L．Multisensor image fusion in remote sensing:concepts,methods,and applications[J]．International Journal of Remote Sensing,1998,19(5):823-854 [3] Zhang J．Multi-source remote sensing data fusion:status andtrends[J]．International Journal of Image and Data Fusion,2010,1(1):5-24 [4] Thomas C,Ranchin T,et al．Synthesis of multispectral images to high spatial resolution:A critical review of fusion methods based on remote sensing physics[J]．IEEE Transaction Geoscience and Remote Sensing,2008,46(5):1301-1312 [5] Alparone L,Wald L,et al．Comparison of pansharpening algorithms:Outcome of the 2006 GRS-S data-fusion contest[J]．IEEE Transaction Geoscience and Remote Sensing,2007,45(10):3012-3021 [6] Rahman M M,Csaplovics E．Examination of image fusion using synthetic variable ratio (SVR) technique[J]．International Journal of Remote Sensing,2007,28(15):3413-3424 [7] Gillespie A R,Kahle A B,Walker R E．Color enhancement ofhighly correlated images—II Channel ratio and ‘chromacity’ transformation techniques[J]．Remote Sensing of Environment,1987,22(3):343-365 [8] Zhang Y．A new merging method and its spectral and spatialeffects[J]．International Journal of Remote Sensing,1999,20(10):2003-2014 [9] Liu J G．Smoothing Filter-based Intensity Modulation:A spectral preserve image fusion technique for improving spatial details[J]．International Journal of Remote Sensing,2000,21(18):3461-3472 [10] Zhang Y．Understanding image fusion[J]．Photogrammetric Engineering & Remote Sensing,2004,70(6):657-661 [11] Wald L,Ranchin T,Mangolini M．Fusion of satellite images of different spatial resolutions:Assessing the quality of resulting images[J]．Photogrammetric Engineering & Remote Sensing,1997,63(6):691-699 [12] Massip P,Blanc P,Wald L．A method to better account for mo-dulation transfer functions in ARSIS-Based pansharpening me-thods[J]．IEEE Transaction Geoscience and Remote Sensing,2012,50(3):800-808 [13] Alparone L,Aiazzi B,et al．Multispectral and panchromatic data fusion assessment without reference[J]．Photogrammetric Engineering & Remote Sensing,2008,74(2):193-200 [14] Aiazzi B,Baronti S,Selva M．Improving component substitu-tion pansharpening through multivariate regression of MS +Pan data[J]．IEEE Transaction Geoscience and Remote Sensing,2007,45(10):3230-3239 |
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