With the rapid development of unmanned aerial vehicle( UAV),it is widely used in the field remote sensing which is different from the satellite remote sensing,and has many advantages such as more convenient,lower cost,and shorter revisit cycle. However,effective information cannot be extracted from the multispectral images of UAV easily because of the high-resolution multi-band redundant data which can increase the complexity of data processing and consume a lot of computational resources. Therefore,the pur...