chapter  11
16 Pages

Land-Use and Land-Cover Change Detection ��������������������������������������������������������������

ByDengsheng Lu, Emilio Moran, Scott Hetrick, Guiying Li

Change detection is the process of identifying differences in the state of an object or phenomenon by observing it at different times (Singh 1989). Timely and accurate change detection of Earth’s surface features provides the foundation for a better understanding of the relationships and interactions between human and natural phenomena in order to better manage and use resources. The advantages of repetitive data acquisition, its synoptic view, and a digital format suitable for computer processing have made remotely sensed data the major data sources for different change detection applications during the past decades (Lu et al. 2004; Kennedy et al. 2009). In general, change detection involves the application of multitemporal data sets to quantitatively analyze the temporal effects of the phenomena of interest. Good change detection research should provide the following information: area change and rate of change, spatial distribution

CONTENTS

11.1 Introduction ........................................................................................................................ 273 11.2 Overview of Change Detection Procedure .................................................................... 274

11.2.1 Nature of Change Detection Problems ............................................................... 275 11.2.2 Data Collection ....................................................................................................... 276 11.2.3 Image Preprocessing ............................................................................................. 276 11.2.4 Image Processing and Classication ................................................................... 277 11.2.5 Selection of Change Detection Algorithms ........................................................ 278 11.2.6 Evaluation of Change Detection Results ............................................................ 279

11.3 Case Study for Detecting Urbanization with Multitemporal Landsat TM Images ........................................................................................................... 279 11.3.1 Research Problem and Objective ......................................................................... 279 11.3.2 Description of the Study Area .............................................................................280 11.3.3 Methods ...................................................................................................................280