Abstract:

So far little research has been carried out on the process of FY3A/VIRR data which has a huge amount of data.Current commercial remote sensing image processing softwares can not accomplish the preprocessing work directly.So it brings great difficulties in subsequent image processing and the spread of FY3A/VIRR data. In order to solve this problem,we combine a modified normalized difference snow index (NDSI) and the comprehensive threshold method with IDL and VB mixed technology,and design a snow information batch extraction software.We achieve the snow information extraction and accuracy validation of a single image or multiple images for FY3A/VIRR data.Experimental results show that the proposed software is fast and realtime,and it can do batch extraction of snow information,thus saving great human resources and improving the ability of dispatching and sharing the VIRR data. It can be extended in industrial production and automation in the future.

Key words: FY-3A/VIRR;pre-processing;snow information extraction;batch extraction