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《Acta Geodaetica et Cartographica Sinica》 2008-01
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Remote Sensing Image Fusion Algorithm in the DCT Domain

CHU Heng, WANG Ru-yan, ZHU Wei-le School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China; School of Communication and Information Engineering, Chongqing Univ of Posts and Telecom, Chongqing 400065, China  
A multispectral and panchromatic image fusion algorithm using Discrete Cosine Transform(DCT) and IHS transform and its modified approach are proposed. The proposed approaches can be performed in the DCT compression domain directly according to the DCT coefficient features and are suitable for fast image fusion in the compression domain. The visual effects and objective evaluations show that the proposed algorithms can obtain the better tradeoff between improving the spatial resolution and preserving the spectral characteristics, compared with the conventional remote sensing image fusion methods.
【Fund】: 重庆市教委科学技术研究项目(KJ070511)
【CateGory Index】: TP751
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