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The Design and Implementation of Metadata Generation Tool for Raster Data

• 1、Feiyan Aerial Remote Sensing Tech Co., Ltd. Nanjing 210001, China

Abstract：The country stipulates that corresponding metadata files must be submitted synchronously when delivering raster digital products of fundamental geographic information, but currently there is a lack of commercial software for automatic/semi-automatic generation of metadata files. Based on a systematic review of the "GB/T 39608-2020 metadata for digital products of fundamental geographic information", this paper categorizes metadata items into three types: fixed value category, endogenous personalized category, and exogenous personalized category; Designed metadata template file format that supports fixed value classes and endogenous personalized classes, as well as sheet personalized data format that supports exogenous personalized classes; Designed the software architecture and processing flow of the raster metadata generation tool, as well as the calculation methods for multiple metadata values. The experiment shows that the tool developed based on the above design is flexible and easy to use, with high running efficiency, greatly improving the efficiency and accuracy of metadata file generation.

Keywords： Cartography and Geographic Information Engineering raster data metadata GB/T 39608-2020 subdivision map