资源三号卫星多光谱图像特征分析和质量评价

doi:10.6046/gtzyyg.2014.01.04

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摘要

针对资源三号卫星（ZY-3）多光谱图像数据展开图像辐射特征和质量评价研究，通过与SPOT5 HRG（high resolution geometric）多光谱数据对比分析，利用值域、均值和标准差等影像灰度统计信息分析ZY-3与SPOT5图像质量在不同地理区域的差异；通过计算相关系数分析波段之间的相关性，选取不同区域内的典型地物直方图进行对比，以反映多光谱影像的辐射特征；通过计算均质性、对比度、信息熵和角二阶矩评价ZY-3和SPOT5影像的纹理特征，并从影像地理要素视觉特征方面比较2种卫星图像的质量，作为用户选取和使用ZY-3图像的参考。实验结果表明：ZY-3多光谱图像的质量较好，在波段相关性方面，ZY-3在除植被外的水体和建筑物等要素信息提取能力上优于SPOT5；在纹理特征方面，ZY-3也比SPOT5有更好的显示效果，可用做中、小比例尺国土资源等领域应用的基础图像。

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关键词 ：模糊分类, 过火区, 环境小卫星B星(HJ-1B)

Abstract：

Research on image characteristics and quality of ZY-3 satellite multi-spectral data was performed in comparison with SPOT5 HRG(high resolution geometric)satellite data. Subjective quality assessment was employed to compare the image quality, and the differences were analyzed by calculating data range, mean and standard deviation from gray scale statistics of the three distinct areas; on such a basis, the multi-spectral radiometric characteristics were investigated, and histograms of typical ground objects in these areas were selected for comparison. By calculating the correlation index between different bands of ZY-3 and SPOT5 images, the band correlation assessment was made. Through refining texture characteristics, such as homogeneity, contrast, entropy and angular second moment of these two images, their textural qualities were assessed. The results show that, though the high correlation between ZY-3's bands in vegetation makes its vegetation extraction capability lower than that of SPOT5, ZY-3 multi-spectral image, it still has a better performance in the aspect of water and building extraction potential and it has advantage in image quality and texture characteristics, so it can be used as base map for different applications in different fields.

Key words： fuzzy classification burned area HJ-1B

收稿日期: 2013-02-28 出版日期: 2014-01-08

TP75

基金资助:

国家测绘地理信息局卫星测绘应用中心科技支撑项目（编号：2011BAB01B05）；国家自然科学基金项目（编号：41271453）和中央高校基本科研业务费专项资金项目（编号：2011274400）共同资助。

通讯作者: 罗恒（1985-），男，博士研究生，主要从事土地资源遥感及地理空间数据模型等方面的研究。Email：luoheng330@hotmail.com。

作者简介: 李霖（1960-），男，教授，博士生导师，主要从事地理空间数据模型、地理本体及地理信息可视化等方面的研究。Email：lilin@whu.edu.cn。

引用本文:

李霖, 罗恒, 唐新明, 李桢. 资源三号卫星多光谱图像特征分析和质量评价[J]. 国土资源遥感, 2014, 26(1): 17-24.
LI Lin, LUO Heng, TANG Xinming, LI Zhen. Characteristic analysis and quality assessment of ZY-3 multi-spectral image. REMOTE SENSING FOR LAND & RESOURCES, 2014, 26(1): 17-24.

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https://www.gtzyyg.com/CN/10.6046/gtzyyg.2014.01.04 或 https://www.gtzyyg.com/CN/Y2014/V26/I1/17

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