CAJ | 학술논문

“高分二号”（GF-2）卫星的成功发射是中国遥感事业发展的重大突破，标志着中国遥感卫星进入亚米级时代。由于兼具高辐射精度、高定位精度和快速机动能力等特点，GF-2卫星数据应用于海岸线提取将极大提高提取的精度和速度。现有的遥感解译海岸线方法主要有阈值分割法、边缘检测法、区域生长提取法、神经网络法和面向对象法等，其中面向对象法是一种新兴的遥感图像解译方法，该方法通过对影像的分割，使同质像元组成大小不同的对象，从而实现较高层次的遥感图像分类和目标地物提取。文章以深圳大鹏半岛 GF-2卫星数据为例，通过对影像进行正射校正、配准、融合和裁剪等预处理，再采用面向对象方法对海岸线进行了提取，并对入海河流河口处的海陆分界线划分进行了初步研究。研究结果表明，将海岸线提取结果与 GF-2卫星遥感影像叠加进行验证，结果可靠，且所耗时间短，效率高。
“고분이호”（GF-2）위성적성공발사시중국요감사업발전적중대돌파，표지착중국요감위성진입아미급시대。유우겸구고복사정도、고정위정도화쾌속궤동능력등특점，GF-2위성수거응용우해안선제취장겁대제고제취적정도화속도。현유적요감해역해안선방법주요유역치분할법、변연검측법、구역생장제취법、신경망락법화면향대상법등，기중면향대상법시일충신흥적요감도상해역방법，해방법통과대영상적분할，사동질상원조성대소불동적대상，종이실현교고층차적요감도상분류화목표지물제취。문장이심수대붕반도 GF-2위성수거위례，통과대영상진행정사교정、배준、융합화재전등예처리，재채용면향대상방법대해안선진행료제취，병대입해하류하구처적해륙분계선화분진행료초보연구。연구결과표명，장해안선제취결과여 GF-2위성요감영상첩가진행험증，결과가고，차소모시간단，효솔고。
The successful launching of GF-2 satellite of high spatial resolution, high radiation precision, high positioning accuracy and fast maneuver is a significant breakthrough in the development of remote sensing and marks the advent of the submeter era in China. The main methods of coastline extraction by remote sensing include threshold method, edge detection method, region growing method, neural network method and object-oriented method of which the last one can realize different classification and extracts target objects by segmenting image. This paper extracted the coastline by using pre-processing such as ortho-rectification, registration, fusion and clipping and object-oriented method with GF-2 data of Dapeng Peninsula, Shenzhen. In addition, the division of sea-land demarcation line is initially discussed. At last, the extraction result proves reliable by comparing coastline with GF-2 data and it can improve the precision and efficiency of coastline extraction by using GF-2 data.