The invention discloses a method and a
system for recording illegal pattern spot change properties of a defense film. The method comprises the following steps of: preparing and preprocessing data; carrying out
satellite image classification based on an optimized
random forest method; extracting a change
reference region; land class pattern spot boundary and attribute correction; identifying a
change type; through spatial position
overlay analysis, comparing the change pattern spots with
land utilization historical data, and judging the change properties of the pattern spots through a set judgment rule; and in the
change type identification and change
property analysis process, automatically recording the
change type of the pattern spot and a change
property analysis result, and displaying the change type and the change
property analysis result in real time. Based on the latest
database, the
satellite image and other auxiliary data, change information is extracted through man-
machine interaction, and the change range, the change type and the change property of the pattern spot are analyzed in real time, so that the detection efficiency and the accuracy of illegal pattern spot change are improved.