移动地理信息系统中的多源异构数据融合模型

为了提高移动地理信息系统在野外数据采集过程中对多源异构数据的组织管理效率,在分析现有方法局限性和数据自身结构的基础上,提出一种基于可交换图像文件(EXIF)原理以数字图像为载体融合空间位置信息和一般形式属性的数据模型。该模型将关联的空间位置和一般属性嵌入到数字图像的物理结构中,从而实现关联数据的高度整合。基于该模型设计开发了野外数据采集系统,系统应用于农业资源管理与决策分析领域,验证了模型的有效性和实际效果。

Multi-source heterogeneous data fusion model in mobile geographic information system

In order to enhance the organization and management efficiency of multi-source heterogeneous data in field data collection process for mobile Geographic Information System(GIS),based on the analysis of the limitations of the existing methods and structural features of the data,a new kind of fusion model based on EXchangeable Image File(EXIF) was proposed in which the digital image was used as carrier to fuse the information of spatial location and general attributes.In the proposed model,associated spatial information and general attributes were embedded into digital image to achieve the purpose of being highly integrated.A field data collection system was designed and developed based on the model,and applications of this system in the fields of agricultural resources management and decision analysis verify the validity and actual result of the model.