兰州大学学报(自然科学版)
蘭州大學學報(自然科學版)
란주대학학보(자연과학판)
JOURNAL OF LANZHOU UNIVERSITY(NATURAL SCIENCES)
2014年
5期
745-750
,共6页
张毅%谭龙%陈冠%郭鹏%乔良%孟兴民
張毅%譚龍%陳冠%郭鵬%喬良%孟興民
장의%담룡%진관%곽붕%교량%맹흥민
面向对象%滑坡识别%监督分类%遥感
麵嚮對象%滑坡識彆%鑑督分類%遙感
면향대상%활파식별%감독분류%요감
object-oriented%landslide information extraction%supervised classification%remote sensing
运用面向对象分类法中的基于监督分类和基于规则的滑坡识别方法,选择合适的特征属性,利用Aster和Geoeye的融合影像对构林坪流域进行滑坡信息提取,并对分类结果进行精度评价和比较.结果表明:基于监督分类的滑坡信息提取总体精度为66.58%, Kappa系数为0.65,具有较高的分类精度;基于规则的滑坡信息提取方法也取得了84.7%的识别结果,但是区域特殊地形地貌和引发滑坡因子的复杂性导致了72.6%的分歧因子.总体上基于面向对象分类法的高分辨率遥感滑坡信息提取在白龙江流域具有良好的适用性.
運用麵嚮對象分類法中的基于鑑督分類和基于規則的滑坡識彆方法,選擇閤適的特徵屬性,利用Aster和Geoeye的融閤影像對構林坪流域進行滑坡信息提取,併對分類結果進行精度評價和比較.結果錶明:基于鑑督分類的滑坡信息提取總體精度為66.58%, Kappa繫數為0.65,具有較高的分類精度;基于規則的滑坡信息提取方法也取得瞭84.7%的識彆結果,但是區域特殊地形地貌和引髮滑坡因子的複雜性導緻瞭72.6%的分歧因子.總體上基于麵嚮對象分類法的高分辨率遙感滑坡信息提取在白龍江流域具有良好的適用性.
운용면향대상분류법중적기우감독분류화기우규칙적활파식별방법,선택합괄적특정속성,이용Aster화Geoeye적융합영상대구림평류역진행활파신식제취,병대분류결과진행정도평개화비교.결과표명:기우감독분류적활파신식제취총체정도위66.58%, Kappa계수위0.65,구유교고적분류정도;기우규칙적활파신식제취방법야취득료84.7%적식별결과,단시구역특수지형지모화인발활파인자적복잡성도치료72.6%적분기인자.총체상기우면향대상분류법적고분변솔요감활파신식제취재백룡강류역구유량호적괄용성.
Through a selection of appropriate attributes, two object-oriented classification methods (supervised classification method and rule-based method) were applied to extract landslide morphological information for Goulinping Basin based on the fused images of Aster and Geoeye. The accuracy of the classifications were evaluated and compared and the results showed that the accuracy of landslide information extraction based on the supervised classification is 66.58%and the Kappa coe?cient is 0.65. The recognition accuracy based on the rule-based method is 84.7%, but the difference of factor is 72.6% due to the special topography and the complexity of the influencing factors of the landslide. In summary, the two classification methods have good applicability in Bailong River Basin.