基于Landsat 8影像的湿地信息提取最佳波段组合

摘要

湿地在维持生态平衡等方面发挥着重要的作用，因此，湿地的监测与保护是研究者们关注的话题。遥感技术的出现为湿地研究提供了强有力的技术支撑。在湿地遥感中，目视解译仍然是湿地信息提取的重要方法。影像的最佳波段的选取与合成作为色彩合成的重要部分，直接对目视解译的精度产生影响。因而，遥感影像最佳波段选择与合成是遥感图像处理的一个重要课题。本文以三江平原为例，探讨了Landsat 8影像用于湿地目视解译时的最佳波段选择与组合，以期为Landsat 8影像更有效地应用于湿地信息提取提供参考。%Wetlands play an important role in maintaining ecological balance and so on, therefore, the monitoring and protection of the wetland has aroused widespread concerns. The emergence of remote sensing technology provides a strong technical support for the study of wetland. Visual interpretation is still an important method in wetland information extraction by RS technology. As an important part of color synthesizing, the optimal band combination directly affect the precision of the visual interpretation. Taking the Sanjiang Plain as an example, this paper discusses the optimal band combination in visual interpretation of wetlands based on Landsat 8 image. The result shows that the optimal combination bands for Landsat 8 image interpretation are OLI5, OLI6, and OLI4 assigned with R, G and B primitive color respectively.