SATELLITE IMAGE CHANGE EXTRACTION SYSTEM, SATELLITE IMAGE CHANGE EXTRACTION METHOD, AND FRONT END UNIT IN SATELLITE IMAGE CHANGE EXTRACTION SYSTEM

摘要

To provide a technique capable of extracting changes in a satellite image configured to correct cost and time problems.SOLUTION: A satellite image change extraction system creates a prediction image configured to predict a shadow forming direction and a shadow falling portion (shadow length) from information of a shooting point and time of a newly captured satellite image (new image) with respect to three-dimensional data of a satellite image (past image) group captured in the past, and determines the presence of a shadow or a falling portion of a target feature based on a difference in comparison between the prediction image and the new image.SELECTED DRAWING: Figure 3