【作者】 宋玮； 张杰； 姬光荣； 孟俊敏；

【Author】 SONG Wei 1,2 ,ZHANG Jie 2,3 ,JI Guang rong 1 ,MENG Jun min 2,3 (1. Ocean University of China , Qingdao 266071, China;2. First Institute of Oceanography, SOA , Qingdao 266061, China; 3. Key Laboratory of Marine Science and Numerical Modeling, SOA, China)

【机构】 中国海洋大学； 国家海洋局第一海洋研究所；

【摘要】 对南沙双子群礁SAR和TM遥感图像进行噪声滤除和几何校正等预处理后,利用SAR对边缘的敏感性和TM近红外波段对水陆界线比较敏感的特性,进行海岛边缘检测;并依据TM蓝光波段对水的穿透性,用其检测水下礁盘的边缘和轮廓,以研究珊瑚礁发育规律和走向特征。继而进行岛礁特征统计,并利用遥感影像及其附带的地理位置信息,依据重心算法实现岛礁定位。更多还原

【Abstract】 After preprocessing the SAR and TM remote sensing images of Nansha Shuangzi reefs for noise reduction and geometric correction, the pocessed images can be used to detect the island edge by using the edge sensitivity of SAR and the water land boundary sensitivity of TM near infrared band, and the penetrability to water of TM blue light band can be used to detect the edge and contour of underwater reef plate and to study the growth regularity and trend features of coral reefs. Furthermore, the statistics of island reef characteristics are made by using the remote sensing images and their geographic information, and the position of island reefs can be fixed by using gravity center algorithm.更多还原