CAJ | 학술논문

在地理国情监测项目中，使用了大量的卫星遥感影像，这些卫星遥感影像单景数据都大于2 GB。利用GDAL的快速高效的影像读取功能，动态分块读取图像，能够很好地处理这些大数据，采用扫描线算法提取地理国情监测项目的影像有效边界，实现影像接边和影像坐标范围检查。
재지리국정감측항목중，사용료대량적위성요감영상，저사위성요감영상단경수거도대우2 GB。이용GDAL적쾌속고효적영상독취공능，동태분괴독취도상，능구흔호지처리저사대수거，채용소묘선산법제취지리국정감측항목적영상유효변계，실현영상접변화영상좌표범위검사。
In the geographic national conditions monitoring project , a large number of satellite remote sensing images are used , and the single panoramic image is usually larger than 2GB.By using the dynamic sub -block function of GDAL,we can fast and efficiently read and process those mass data images .Then,we use the scan line algorithm to obtain effective border of image in the geographic na -tional condition monitoring project , and achieve image edge matching and image coordinate range checking .