Landsat8影像在土地利用分类中的最佳波段组合研究——以湖北省恩施市为例

Optimum Bands Combination of Landsat8 Image in Land Use Classification——Taking Enshi as a Case Study

为提取土地利用/覆被信息,选取恩施市2015年10月的landsat8卫星OLI影像作为实验数据,在统计和分析各波段的光谱特征的基础上,计算最佳指数因子(OIF),并结合典型地物光谱特征曲线,对最佳波段组合的选择进行研究.结果表明:将最佳指数法和典型地物光谱特征分析法相结合,能客观有效地确定OLI影像的最佳波段组合;456和457两种波段组合是研究区土地利用/覆被信息提取的最佳波段组合.

In order to extract land use/cover information,the landsat8 satellite OLI image of Enshi in Oc?tober 2015 was selected as the test image data.Based on the statistics and analysis of spectral characteris?tics of each band, the optimum index factor ( OIF) was calculated,and finally according to the typical spectral image feature curve in research area, the selection of optimum band combination were studied. The results showed that when the optimum index factor ( OIF) and typical spectral image feature curve were combined, the optimum band combination of OLI image could be selected objectively and effective?ly.And band 456 and 457 was the optimum band combination in extraction of land use/cover information in the study area.