中文

Journal of Applied Sciences ›› 2010, Vol. 28 ›› Issue (4): 361-366.doi: 10.3969/j.issn.0255-8297.2010.04.006

• Signal and Information Processing • Previous Articles     Next Articles

Improving High Frequency Modulation Image Fusion with Modulation Transfer Function Filters

JIA Yong-hong1;2, ZHANG Xiao-ping1, JIA Shi-feng3, ZHANG Qian1   

  1. 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
  • Received:2010-04-22 Revised:2010-05-21 Online:2010-07-23 Published:2010-07-23

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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.

Key words: image fusion, modulation transfer function, resolution degradation, GeoEye-1 image

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