【摘要】 利用Landsat ETM+和ASTER近红外波段数据进行了水体信息提取,然后利用知识规则对2种提取结果进行进一步分类,并分析了波谱分辨率的差异对水体信息提取结果的影响。实验表明,基于Landsat ETM+数据的水体提取总体精度为82.4%,基于ASTER数据的水体信息提取结果总体精度为92.4%;在空间分辨率相同情况下,波谱分辨率的提高可以有效地提高水体信息提取的精度。更多还原

【Abstract】 In this paper,the near-infrared bands of Landsat ETM + and ASTER remotely sensed data were chosen for the extraction of water bodies.The results of extraction from two data sources further improved and categorized by using GIS rule sets.The final results of water body information were compared and the discrepancy was analyzed.The overall accuracies of extraction on Landsat ETM + imagery and ASTER imagery were 82.4%,92.4% respectively.The results show that an increase of spectral resolution can improve accuracy of extraction of water bodies greatly in the same spatial resolution.+更多还原