国土资源科技管理
國土資源科技管理
국토자원과기관리
Scientific and Technological Management of Land and Resources
2009年
5期
77~81
,共null页
田坎系数 基于像元：面向对象
田坎繫數 基于像元：麵嚮對象
전감계수 기우상원：면향대상
ridge coefficient ; based on dement ; object-oriented
利用黄石市阳新县分辨率为2．5m的SPOT-5影像，选取了6个典型耕地图斑，采用基于像元和面向对象两种分类模式对其进行分类并计算田坎系数，将计算结果与实地测算的田坎系数进行对比分析，研究表明：基于影像分类原理获取田坎系数与实地测算的田坎系数有较高的符合度；由于面向对象的分类原理考虑了较多的地物信息，获取的田坎系数符合度较高。
利用黃石市暘新縣分辨率為2．5m的SPOT-5影像，選取瞭6箇典型耕地圖斑，採用基于像元和麵嚮對象兩種分類模式對其進行分類併計算田坎繫數，將計算結果與實地測算的田坎繫數進行對比分析，研究錶明：基于影像分類原理穫取田坎繫數與實地測算的田坎繫數有較高的符閤度；由于麵嚮對象的分類原理攷慮瞭較多的地物信息，穫取的田坎繫數符閤度較高。
이용황석시양신현분변솔위2．5m적SPOT-5영상，선취료6개전형경지도반，채용기우상원화면향대상량충분류모식대기진행분류병계산전감계수，장계산결과여실지측산적전감계수진행대비분석，연구표명：기우영상분류원리획취전감계수여실지측산적전감계수유교고적부합도；유우면향대상적분류원리고필료교다적지물신식，획취적전감계수부합도교고。
Employing the 2.5m resolution SPOT-5 remote sensing image of Yangxin County of Huangshi City and choosing 6 typical farming-land polygon areas, this paper classifies the chosen polygon areas, calculates the ridge coefficient based on element classification and object-oriented classification, and compares the calculation result with the field survey one. The research shows that the ridge coefficient obtained through image classification principle is consistent with the field survey result. Taking the advantage of considering more land cover object information, the one obtained through object-oriented classification method acquires better accuracy.
