A metadata conversion method and a device based on a unified label

Abstract

The embodiment of the invention provides a metadata conversion method and a device based on a unified tag. The method comprises the following steps: obtaining the entity data of the label to be converted of the metadata file to be converted, and obtaining the entity data of the intermediate unified label according to the entity data of the label to be converted; Obtaining target label entity dataaccording to the metadata unified label switching model and the intermediate unified label entity data; A target metadata file is obtain according to that entity data of the target tag. As that embodiment of the invention aim at multi-source heterogeneous spatial data, By constructing a unified label-based metadata unified label switching model, To shield the heterogeneity of metadata schemes to the maximum extent, the mapping relationship between existing metadata standards and unified metadata standards is established, metadata of different formats are converted into standard formats, and then into target formats, thus centralized management and data sharing of multi-source spatial data are realized.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of data processing, and in particular to a metadata conversion method and device based on a unified tag. Background technique [0002] Due to different sources, formats, and types of spatial data, for example, the metadata format of Landsat data is different from that of GF data, each data center adopts different metadata models, establishes different metadata databases, and provides different The access interface realizes the management, retrieval and utilization of spatial data. [0003] Different metadata models are only applicable to certain types of data, and are not universal. They cannot integrate multi-source data, and it is easy to form "information islands". There is a lack of correlation between metadata and different metadata. There are different elements and structural forms among the data, so it is difficult to directly realize the interaction of intelligence informat...

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Problems solved by technology

[0003] Different metadata models are only applicable to certain types of data, and are not universal. They cannot integrate multi-source data, and it is easy to form "information islands". There is a lack of correlation between metadata and different metadata. There are different elements and structural forms among the data, it is difficult to directly realize the interaction of intelligence information, and it is not conducive to the centralized management and data sharing of multi-source spatial data

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