摘要
按照国家土管局土地利用现状分类标准,利用叠合的海宁市长安镇1∶1万同时期土地详查电子地图的全域地面实况数据,在遥感图像处理常规分类方法的范畴内,采取最大程度利于提高分类精度的措施,所得的分类精度上限为65%。研究表明,通常在试验区的小块局部中选择训练样本和选择评价分类精度的参考像元,对精度评价有显著影响。
It is still not clear that how high the upper limit of
land_use classification accuracy can be reached using TM imagery in southeast p la in areas of
China featuring mass irrigation networks and small tracts. In this p aper a result for the upper
limit, 65%, is presented based on the GIS layer (as gro und truth) of the detailed land_use
inventory map at 1∶10000 scale being well o verlaid with a TM image of the same period,
according to the national land_use c lassification system by taking all measures that may make
the accuracy higher wi t hin the framework of conventional image classification mathods. The
results show that the selection of training samples and reference pixels for accuracy assess
ment in a limited part of test area has significant influence on accuracy assess me nt. The
limitation of quality and quantity of reference pixels is probably the m a in reason why some
early researches of this kind reported higher classification accuracy.
出处
《遥感学报》
EI
CSCD
1999年第2期144-150,共7页
NATIONAL REMOTE SENSING BULLETIN
关键词
土地利用
遥感
分类
精度评价
GIS
Land use,
Remote sensing, GIS, Classification, Accuracy assessment