THE OBJECT-ORIENTED METHOD FOR WETLAND INFORMATION EXTRACTION
SUN Yong-jun 1,2, TONG Qing-xi 1,3, QIN Qi-ming 1
1. Institute of Remote Sensing and GIS, Peking University, Beijing 100871, China; 2. China Aero Geophysical Survey and Remote Sensing Center for Land and Resources, Beijing 100083, China; 3. State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 100101, China
This paper deals with the utilization of the object-oriented method to extract wetland information from the Landsat ETM image. The test area is located in the source area of the Yellow River, and the wetland information extracted includes that of swamps and lakes. The object-oriented method consists of four steps, i.e., image segmentation, class hierarchy building, feature choice and classification, and precision evaluation. The test results show that the object-oriented method can effectively extract wetland information with smooth borders and avoid the pepper shape effect. With some adjustment the method can be widely applied to other areas. It can raise the automation degree of information extraction, reduce artificial workload and improve working efficiency.
孙永军, 童庆禧, 秦其明. 利用面向对象方法提取湿地信息[J]. 国土资源遥感, 2008, 20(1): 79-82.
SUN Yong-Jun, TONG Qing-Xi, QIN Qi-Ming. THE OBJECT-ORIENTED METHOD FOR WETLAND INFORMATION EXTRACTION. REMOTE SENSING FOR LAND & RESOURCES, 2008, 20(1): 79-82.