基于移动终端的地表覆盖众包标报方法研究

发布时间：2018-03-05 03:19

本文选题：众包地理信息　切入点：标报　出处：《山东师范大学》2017年硕士论文　论文类型：学位论文

【摘要】：地表覆盖的变化发现是地表覆盖更新的重要环节。用PC端集中采集地表覆盖变化数据的传统更新方法,存在效率低、作业面积小、更新滞后、互动性差等问题,不能满足当前地表覆盖现势更新的需求。将众包地理信息手段用于地表覆盖动态更新,能有效克服传统标报方式的不足,是移动互联网条件下地表覆盖变化发现的一条可行途径。本文在国家自然科学基金项目“基于地表参量的污水灌溉区农田生态安全遥感监测研究”(No.41371395),山东省自然科学基金项目“龙口矿区及周边海岸带遥感监测研究”(鲁勘字[2012]110号)、“山东省焦家金成矿区及周边矿区环境地质遥感调查研究”(鲁勘字[2013]141号)和“黄河三角洲高效生态经济区海咸水入侵调查与监控预警系统建设”(鲁勘字[2011]14号),以及山东省国土厅项目“山东省国土资源遥感波谱库建设项目”的共同支撑之下,开展了基于移动终端的地表覆盖众包标报方法研究。首先从地表覆盖变化发现的实际出发,归纳地表覆盖标报内容,然后设计相应的多级互动标报模型,并确定基于位置的信息推送方法。论文的主要研究内容和创新性成果如下:1)归纳描述地表覆盖众包标报内容是众包标报方法研究的基础。通过分析总结现有地表覆盖的分类体系,确定了地表覆盖更新项目和地表覆盖标报内容,利用概念模型和逻辑模型对众包标报内容进行了描述。同时在众包标报中引入时间和空间因素,利用GML对众包标报事件进行了表达。2)提出了顾及众包数据质量的多级互动标报模型。在分析了众包标报中不同实体角色之间的互动关系基础之上,设计了“多级互动”的众包标报模型。同时针对众包标报信息的不可靠问题,引入了公众信誉评价和多级审核双重机制,用来剔除误差较大的数据,提高公众标报信息的准确性。3)针对多级互动标报模型中标报信息互动传递要求,提出了基于移动位置的众包标报信息推送方法:首先研究分析了在众包标报中信息的流向和传递方式,然后基于公众的位置信息,利用谱聚类、凸包算法和Agent技术实现标报信息的精准推送。4)开发实验原型系统,对论文所提出的方法进行实验验证。实验以Visual Studio 2012为开发工具,集成Openlayer API开发,并用实际与模拟数据验证文中提出的关键技术方法。实验结果表明了本文所提出的方法具有可行性,为地表覆盖变化发现提供了一条新的思路。
[Abstract]:The discovery of surface cover change is an important link in surface cover renewal. The traditional updating method of collecting land cover change data centralized by PC has some problems, such as low efficiency, small work area, backward renewal, poor interaction, and so on. It can not meet the needs of the current potential renewal of surface cover. Using crowdsourcing geographic information means to dynamically update the ground cover can effectively overcome the shortcomings of traditional marking and reporting methods. It is a feasible way to find out the change of land cover under mobile internet. The project of National Natural Science Foundation "remote Sensing Monitoring of farmland Ecological Security in sewage Irrigation area based on Surface parameters" No. No. 41371395, Natural Science of Shandong Province. "remote Sensing Monitoring of Longkou Mining area and its surrounding Coastal Zone" (Shandong Prospecting word [2012] 110, "remote Sensing investigation of Environmental Geology in Jiaojia Gold metallogenic area and its surrounding Mining area, Shandong Province" (Shandong Prospecting word [2013] 141) and "efficient Genesis in the Yellow River Delta" The construction of an investigation and monitoring and early warning system for sea salt water intrusion in the state economic zone "(Lu Kanyu [2011] No. 14") and the Shandong Province Land Department project "Shandong Province Land and Resources remote Sensing Spectrum Database Construction Project", In this paper, the research on the method of surface coverage crowdsourcing based on mobile terminal is carried out. Firstly, based on the reality of surface cover change discovery, the content of surface coverage is summarized, and then the corresponding multi-level interactive scalar model is designed. The main research contents and innovative results of this paper are as follows: 1) Inductively describing the content of the surface cover crowdsourcing report is the basis of the research of crowdsourcing method. Coverage classification system, The contents of surface cover renewal project and surface coverage report are determined, and the contents of crowdsourcing are described by using conceptual model and logical model. At the same time, time and space factors are introduced into crowdsourcing report. Using GML to express the event of crowdsourcing. 2) a multilevel interactive scalar model considering the quality of crowdsourcing data is proposed. Based on the analysis of the interaction between the different entities in the crowdsourcing report, A crowdsourcing model of "multilevel interaction" is designed. Aiming at the unreliable information of crowdsourcing, a dual mechanism of public credit evaluation and multilevel auditing is introduced to eliminate the data with large errors. Improve the accuracy of public information. 3) for the multi-level interactive bidding model of information transmission requirements, In this paper, a method of pushing crowdsourcing information based on moving position is proposed. Firstly, the flow direction and transmission mode of information in crowdsourcing report are studied and analyzed, then based on the public position information, spectral clustering is used. The experiment prototype system is developed by using convex hull algorithm and Agent technology. The experimental prototype system is developed. The method proposed in this paper is verified experimentally. The experiment takes Visual Studio 2012 as the development tool and integrates Openlayer API development. The experimental results show that the proposed method is feasible and provides a new idea for the discovery of land cover change.
【学位授予单位】：山东师范大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P208

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