CAJ | 학술논문

本研究采用IKONOS 遥感图像，选取波谱特征区，通过区域像元统计并计算各波段权重系数，将影像进行波谱归一化处理，使归一化的影像岛陆与海水特征更明显。在此基础上，采用最大类间方差法确定最佳分割阈值，对归一化的影像进行二值化，从而提取海岛岸线。该方法采用特征曲线法进行水陆分离，得到的二值图像保持了原图的有效边缘，采用二值形态学提取的海岸线连续可靠、信噪比高。结果表明，该方法简单、快速，能有效提取海岸线，具有实用价值。
본연구채용IKONOS 요감도상，선취파보특정구，통과구역상원통계병계산각파단권중계수，장영상진행파보귀일화처리，사귀일화적영상도륙여해수특정경명현。재차기출상，채용최대류간방차법학정최가분할역치，대귀일화적영상진행이치화，종이제취해도안선。해방법채용특정곡선법진행수륙분리，득도적이치도상보지료원도적유효변연，채용이치형태학제취적해안선련속가고、신조비고。결과표명，해방법간단、쾌속，능유효제취해안선，구유실용개치。
This study adopted IKONOS remote sensing images and selected spectral characteristic areas, through regional pixel statistics and calculating weight coefficients of each band, processed the images with the spectral normalized method, which made the features of islands, land and water features more obviously in the images. On this basis, the OTUS was used to determine the optimal segmentation threshold, and the normalization image binarization was made, thus the island coastline was extracted. This method used the characteristic curve method to separate the land and water, obtained the binarization images and maintained the original edge effectively. The coastline that was extracted by Binary Morphology was continuous, reliable and high signal-to-noise ratio. The results showed that this method could extract the coastline fast, simply and effectively, which had the practical value.