CAJ | 학술논문

冰川作为青藏高原的一种典型的地表覆盖类型,在高寒地区广泛分布,往往因为地形复杂,无法实地测绘.本文利用高分辨率遥感影像和高精度的DEM,在分析各种冰川类别的光谱、形状、空间关系、地形和气候等环境分布特征的基础上,综合和发展了现有的特征描述算法,建立了描述各种冰川类别特征的组合提取模型,运用面向对象的自动提取方法,对西部测图区青藏高原试验区进行了冰雪影像自动识别试验.试验结果表明,该方法是可行的,它对难以实地测量的冰雪信息引进了遥感自动提取方法,为研究冰川消融和气候变化拓展了研究思路.
빙천작위청장고원적일충전형적지표복개류형,재고한지구엄범분포,왕왕인위지형복잡,무법실지측회.본문이용고분변솔요감영상화고정도적DEM,재분석각충빙천유별적광보、형상、공간관계、지형화기후등배경분포특정적기출상,종합화발전료현유적특정묘술산법,건립료묘술각충빙천유별특정적조합제취모형,운용면향대상적자동제취방법,대서부측도구청장고원시험구진행료빙설영상자동식별시험.시험결과표명,해방법시가행적,타대난이실지측량적빙설신식인진료요감자동제취방법,위연구빙천소융화기후변화탁전료연구사로.
As a typical land cover class of Qinghai-Tibetan Plateau, glacier is widely distributed in alpine terrain. However, field measurement is impossible in those areas because of complex terrain and adverse weather. At first, on the basis of analyzing the glacier image features such as the spectrum and shape, object spatial relations based on context and environment distribution including terrain and climate, this study combined and developed the existing features description algorithm of object-oriented method. Secondly, we build a series of combined extraction models for glacier information using high resolution remote sensing images and DEM data. At last, based on object-oriented method and combined extraction models, the paper tested the glacier landform extraction in the study area under the Western Mapping Project in Qinghai-Tibetan Plateau. Results indicate that the multi-feature combination model is feasible. The researches introduce a new remote sensing auto-extraction approach of glacier information where it is hardly to make field measurement. Moreover, the paper develops some new ideas for researches on glacier ablation monitoring and climatic change.