一种基于Landsat8遥感数据快速提取水体信息的新方法

A New Method for Fast Information Extraction of Water Bodies Using Remotely Sensed Data Based on Landsat8

日益增多的不合理的围填海活动对海岸带环境造成了不可逆转的破坏。随着Landsat8的成功发射,我们需要一种针对海岸带附近的用海活动进行及时有效的监测的方法。根据围填海活动由海向陆硬化过程不同阶段代表地物的光谱特性,在如今大规模使用Landsat8遥感数据的条件下,根据其波段特性,提出新的水体指数NWI8对光谱进行处理并比较其区分水体、滩涂和人工填海地物的能力。结果发现,基于Landsat8特性提出的新型水体指数可以充分满足区分由海向路硬化过程的不同阶段的需求,高效的完成快速监测用海活动的任务。

Increasingly irrational reclamation activities are causing irreversible damage to the coastal environment. With the launch of Landsat8 ,we need a method to monitor the activities of using the sea quickly and effectively.According to the spectral characteristics of the objects which represent the various stages of the changing from sea to land in reclamation activities, we use a new method based on its bands which is called NWI8 to research the ability to distinguish water,bench and artificial reclamation features.Finally we find this new method can complete the task well.At the end,this new method based on the bands of Landsat8 can do the job which monitor the sea using.