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| 利用调制传递函数滤波改进的高频调制影像融合 | |
| 引用本文： | 贾永红,张晓萍,贾世锋,张谦. 利用调制传递函数滤波改进的高频调制影像融合[J]. 应用科学学报, 2010, 28(4): 361-366. DOI: 10.3969/j.issn.0255-8297.2010.04.006 |
| 作者姓名： | 贾永红 张晓萍 贾世锋 张谦 |
| 作者单位： | 1. 武汉大学遥感信息工程学院，武汉4300792. 武汉大学测绘遥感信息工程国家重点实验室，武汉4300793. 浙江省第一测绘院，杭州310012 |
| 基金项目： | 国家"863"高技术研究发展计划基金，留学回国人员科研启动基金;地理空间信息国家测绘局重点实验室经费资助 |
| 摘 要： | 提出利用调制传递函数滤波来改进高频调制影像融合，以提高GeoEye-1融合影像的空间分辨率，同时保持影像光谱特性. 该方法首先由卫星影像测定调制传递函数，用这一传递函数对影像进行滤波退化，确定退化影像融合在最小均方误差下的高频调制影像融合权系数，进而用于非退化尺度下的融合，获得具有接近全色影像分辨率的多光谱融合影像. 与Erdas软件的加权高通滤波融合法和MTF-GIF的比较表明：改进的高频调制影像融合方法生成的融合影像在保持光谱信息和提高多光谱影像分辨率上是最佳的. |
| 关 键 词： | 影像融合 调制传递函数 分辨率退化 GeoEye-1影像 |
| 收稿时间： | 2010-04-22 |
| 修稿时间： | 2010-05-21 |
Improving High Frequency Modulation Image Fusion with Modulation Transfer Function Filters |
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| JIA Yong-hong,ZHANG Xiao-ping,JIA Shi-feng,ZHANG Qian. Improving High Frequency Modulation Image Fusion with Modulation Transfer Function Filters[J]. Journal of Applied Sciences, 2010, 28(4): 361-366. DOI: 10.3969/j.issn.0255-8297.2010.04.006 | |
| Authors: | JIA Yong-hong ZHANG Xiao-ping JIA Shi-feng ZHANG Qian |
| Affiliation: | 1. School of Remote Sensing and Information Engineering, Wuhan University, Wuhan 430079, China;2. State Key Laboratory for Information Engineering in Surveying, Mapping and Remote Sensing,;Wuhan University, Wuhan 430079, China;3. The First Surveying and Mapping Institute of Zhejiang Province, Hangzhou 310012, China |
| Abstract: | A new high frequency modulation fusion method is proposed to improve spectral quality of GeoEye-1 fusion image with high resolution. The modulation transfer function (MTF)used as a filter for degrading image is first measured from GeoEye-1 images. High frequency modulating parameters are then obtained based on the minimum mean square error criterion. Fused images obtained by using the proposed method have spatial resolution close to non-degraded pan images. Compared with fusion methods of weighted high-pass filtering used in ERDAS IMAGINE and MTF-GIF, the proposed method is the best in terms of preservation of spectral information and spatial resolution. |
| Keywords: | image fusion modulation transfer function resolution degradation GeoEye-1 image |
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