The invention discloses a coastal city
time sequence land utilization information extracting method. The method comprises the following steps: acquiring a remote-sensing image Landsat, and preforming
atmospheric correction on the same; constructing a remote-sensing classification feature index
database by selecting a group of remote-sensing classification features; acquiring data elevation image DEM data to obtain
elevation data and slope data; constructing a
decision rule of single-classification feature index or
multiple classification feature indexes according to different
land utilization types of the coastal city based on a multi-feature
decision tree model, classifying the coastal city
land utilization step by step according to the rule, and finally determining various branches of the
decision tree, detecting the
time sequence remote-sensing image change, and distinguishing a mistaken classification
land type and a missed classification
land type, wherein the method further comprises the content of two parts: evaluating classification precision, and outputting the land utilizationclassification map extracted based on the
decision tree model. By use of the extracting method disclosed by the invention, the coastal city land utilizationclassification precision can be greatly improved, and a key problem in the coastal city land utilizationclassification is solved.