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spectral librarythe spectral library is a collection of reflection spectrum data of various ground objects measured by a hyperspectral imaging spectrometer under certain conditions. the spectral library plays a vital role in accurately interpreting remote sensing image information, quickly matching unknown features, and improving the level of remote sensing classification and recognition. due to the huge amount of data generated by hyperspectral imaging spectrometers, establishing a spectral database of ground objects and using advanced computer technology to store, manage and analyze this information is the key to improving the level of remote sensing analysis and processing. perceive information and enable it to be applied effectively and rationally. only in this way can we provide a basis for people to recognize, identify and match features.