Spectrum preserving type rapid remote sensing image fusion method

The invention provides a spectrum preserving type rapid remote sensing image fusion method, mainly solves the contradiction between spectrum preserving performance, space enhancement performance and operation performance in remote sensing image fusion, and provides a rapid method capable of being used for a real-time system. According to the core mechanism of the method, on the basis of a component replacement method with good operation performance and space performance, one-time low-resolution fusion is added, a brightness component more similar to spectral information of a multispectral dataspace structure and panchromatic data is constructed, and the performance of a fusion result is improved. The fusion result has good spectrum retention capability, is not sensitive to registration deviation, and can effectively inhibit the false structure of the edge. The method is high in robustness, spectrum maintaining performance and space maintaining performance are balanced at a high level,the operation speed is hi