I. Introduction
Change detection in Earth Vision aims at generating the change map that localizes the changed area in two satellite images which were taken at different times [1], [2]. It is essential for many applications, such as urbanization monitoring [3]–[5] and natural disaster analyzing [6], [7]. With multiple optical sensors available, i.e., Spot-5, Quickbird, and Worldview, large amounts of satellite images with a very high spatial resolution (VHR) can be obtained easily. But it required much human intervention to identify changes in so many images. Therefore, change detection has arisen much more attention in recent years [4], [8].