测绘与空间地理信息
測繪與空間地理信息
측회여공간지리신식
GEOMATICS & SPATIAL INFORMATION TECHNOLOGY
2014年
7期
62-65
,共4页
遥感影像%决策树分类%光谱特征%纹理特征
遙感影像%決策樹分類%光譜特徵%紋理特徵
요감영상%결책수분류%광보특정%문리특정
remote sensing image%decision tree classification%spectral features%texture features
以内蒙古自治区伊金霍洛旗为研究区，利用Landsat TM影像，对干旱半干旱地区土地利用信息进行提取。在ENVI软件的支持下，分析了影像的光谱特征及NDVI，NDBI，NDWI特征变量，并运用灰度共生矩阵对影像进行纹理特征提取，得到熵纹理特征图像，确定各类地物的阈值，运用决策树分类法对影像进行分类。结果表明，结合光谱特征和纹理特征的决策树分类方法，提取干旱半干旱地区土地利用信息可行且准确性较高。
以內矇古自治區伊金霍洛旂為研究區，利用Landsat TM影像，對榦旱半榦旱地區土地利用信息進行提取。在ENVI軟件的支持下，分析瞭影像的光譜特徵及NDVI，NDBI，NDWI特徵變量，併運用灰度共生矩陣對影像進行紋理特徵提取，得到熵紋理特徵圖像，確定各類地物的閾值，運用決策樹分類法對影像進行分類。結果錶明，結閤光譜特徵和紋理特徵的決策樹分類方法，提取榦旱半榦旱地區土地利用信息可行且準確性較高。
이내몽고자치구이금곽락기위연구구，이용Landsat TM영상，대간한반간한지구토지이용신식진행제취。재ENVI연건적지지하，분석료영상적광보특정급NDVI，NDBI，NDWI특정변량，병운용회도공생구진대영상진행문리특정제취，득도적문리특정도상，학정각류지물적역치，운용결책수분류법대영상진행분류。결과표명，결합광보특정화문리특정적결책수분류방법，제취간한반간한지구토지이용신식가행차준학성교고。
Taking case of Ejin Horo County , Inner Mongolia Autonomous Region , the information of land-use is extracted from Land-sat TM image in arid and semi -arid regions.With the support of ENVI software , the image is used to analyze the spectral characteris-tics and its value of NDVI , NDBI, and NDWI.The texture information of image including the entropy is acquired by means of using Gay Level Co-occurrence Matrices .Then the classification results are obtained and the image is classified by the decision tree classi -fication method.The result indicate that the decision tree classification based on spectral and texture features extracting the information of land-use in arid and semi-arid regions has satisfactory performance.
