遥感信息
遙感信息
요감신식
2015年
2期
120-125
,共6页
林蔚%杨仲元%蒋金亮%徐建刚
林蔚%楊仲元%蔣金亮%徐建剛
림위%양중원%장금량%서건강
城镇用地信息%TM 影像%长汀%分层分类法%信息提取
城鎮用地信息%TM 影像%長汀%分層分類法%信息提取
성진용지신식%TM 영상%장정%분층분류법%신식제취
urban land%TM imagery%Changting%hierarchical classification%information extraction
针对如何快速、准确地获取县域城镇用地的信息问题,该文以2010年的 TM 影像为数据源,以典型的山地城市福建省长汀县为研究区,比较和分析常用的城镇用地提取方法的优势和不足;借鉴分层分类法的思路,综合运用归一化植被指数结合地形调节植被指数、多波段谱间关系法结合改进型归一化水体指数、归一化裸土指数结合归一化不透水面指数,对长汀城镇用地进行提取,总体精度超过85%。分析表明该方法是一种可行有效的城镇用地提取方法。
針對如何快速、準確地穫取縣域城鎮用地的信息問題,該文以2010年的 TM 影像為數據源,以典型的山地城市福建省長汀縣為研究區,比較和分析常用的城鎮用地提取方法的優勢和不足;藉鑒分層分類法的思路,綜閤運用歸一化植被指數結閤地形調節植被指數、多波段譜間關繫法結閤改進型歸一化水體指數、歸一化裸土指數結閤歸一化不透水麵指數,對長汀城鎮用地進行提取,總體精度超過85%。分析錶明該方法是一種可行有效的城鎮用地提取方法。
침대여하쾌속、준학지획취현역성진용지적신식문제,해문이2010년적 TM 영상위수거원,이전형적산지성시복건성장정현위연구구,비교화분석상용적성진용지제취방법적우세화불족;차감분층분류법적사로,종합운용귀일화식피지수결합지형조절식피지수、다파단보간관계법결합개진형귀일화수체지수、귀일화라토지수결합귀일화불투수면지수,대장정성진용지진행제취,총체정도초과85%。분석표명해방법시일충가행유효적성진용지제취방법。
To grasp the scope of urban land in the county level is significant for successfully carrying out the urban planning and guaranteeing the sustainable development of rural economy.This paper aims at quick and accurate acquisition of the urban land.The study area is located in Changting,a typical mountainous city of Fujian province,where the merits and drawbacks of some traditionally used urban land extraction methods were compared and analyzed.Inspired by the hierarchical classification method,this paper extracted the urban land of Changting county by using NDVI(Normalized Difference Vegetation Index)&TAVI(Topograpy Adjusted Vegetation Index),MNDWI(Modified Normalized Difference Water Index),NDSI(Normalized Difference Soil Index)&NDISI (Normalized Difference Impervious Surface Index)methods considering their merits,and the overall accuracy is 85%,which illustrates that the adopted method is useful and efficient for urban land extraction.