关键词: TH-1, 影像融合, 影像质量评价, 不同地貌

Abstract: In order to explore the fusion quality of TH-1 remote sensing image in different landform conditions, five kinds of fusion methods are applied in plainlandform, mountainlandform, and hill landform in this paper. Fusion methods included IHS, PCA, Wavelet, P+XS, and Brovey. According to experiment, this paper gives the quantitative and qualitative evaluation. The result shows that the data quality decreasing sharply with the hypsography increasing. The Brovey and IHS fusion methods have the most satisfactory expression in comprehensive fusion quality; its fusion result can be used in map-making and other parts which have the higher demand for comprehensive image quality. The PCA and Wavelet fusion methods have the high spectral retention; its fusion result can be used in water quality monitoring, alteration analysis and other parts which has the higher demand for spectral information. The P+XS fusion method keptspatial information well; its fusion result can be used as geographical base map which requires high legibility.

Key words: TH-1, image fusion, image quality assessment, different landforms