面向遥感产品生产的可视化数据流模型

A Visual Dataflow Model for Production of Remote Sensing Products

为了方便快捷地开发出新的遥感产品生产或遥感图像处理算法,尝试利用现有的一些遥感生产处理算法,以"搭积木"的形式,组合成新的算法.由于算法间存在依赖关系,这样就会形成算法的调用次序,也就是遥感产品生产流程.面向遥感生产的可视化数据流模型,就是对这种生产流程的一种抽象和概括.该模型可以体现出算法之间的次序关系,还能体现出算法被调用的次数和被加工数据的信息.同时利用该模型也可以方便描述生产流程的变更和算法的并发执行.

In order to conveniently and rapidly develop the algorithms for remote sensing products or remote sensing image processing,the basic idea is using some of the existing algorithms to develop new algorithm in the form of ＂building blocks＂.Due to the algorithm dependency,the algorithms are called one by one,which means the process flow of remote sensing products.In this paper,a visual dataflow model is presented for the production of remote sensing products,which can represent the process flow of remote sensing products.The proposed model can reflect not only the relationship between algorithms,but also the number of algorithm to be called and the information of data to be processed.Using this model,the changes of the process flow can be described conveniently and the concurrent execution of the algorithm can be performed.