关键词: 遥感图像 建模 像素级融合 融合质量 IKONOS图像

Abstract:

There are many pixel-level fusion methods for remote sensing images, but the differences of those are ambiguous because of lacking a unique description,which makes it difficult to apply image fusion purposefully. On the other hand, the qualities of those fusion methods depend on the operators＇ experi ience as a result of lacking the theory of methods selection. Pointing to this status, the general process of image fusion is modeled at first, and the    remote sensing image fusion methods are defined formally. Then the difference of the fusion quality of the existing methods is analyzed theoretically. Finally qualities of some classic fusion methods are quantified through experiments. Conclusions indicate that the representation of information during the fusion process is the key to fusion quality.

Key words: remote sensing image;modeling, pixel-level fusion, fusion image quality, IKONOS image