The invention discloses a
remote sensing image
water body automatic extraction method and device, and belongs to the field of
water body monitoring. According to the method,
satellite remote sensing images and imaging parameters are obtained and preprocessed, and then, feature information such as NDWI, MSWI, ESWI, Yellow and Canny of a
water body is constructed based on spectrum, gradient, statistical features and the like of the images; NDWI and p(NIR) features are utilized to identify a
purified water body, then feature information is coupled, and misclassification of clouds, buildings and mountain shadows is comprehensively removed; a yellowness characteristic and a characteristic water body sample are constructed to supplement a high-sand-content water body and other abnormal water bodies; and finally, boundary
processing and minimum pattern spot adjustment are carried out to obtain the
spatial distribution of the pervasive water body. According to the invention, the problem of wrong division of the water body caused by shadows and clouds of buildings, mountains and the like is solved, the problem of division leakage of abnormal water bodies such as high-
sediment-content water bodies and
eutrophication is solved, and the limitation of water body
information extraction under the background of a traditional single threshold value and complex ground features is overcome.