Hyperspectral image waveband selecting method and device

The invention discloses a hyperspectral image waveband selecting method. According to the method, the size of a hyperspectral image is shrunk in advance; when the relevancy of wavebands is calculated, part of image elements of the image of each waveband of the hyperspectral image participate in calculation of the relevancy; and waveband selection is performed only through the relevancy of the images of the wavebands, and the information amount of the image of each waveband does not need to be calculated. Therefore, by virtue of the hyperspectral image waveband selecting method provided by the embodiment of the invention, the calculation amount is small and the hyperspectral image waveband selecting efficiency is improved. The embodiment of the invention also provides a hyperspectral image waveband selecting device.