中比例尺地质图保密技术处理方法研究

摘要

国家中比例尺地质图受涉密地理底图的限制,在我国地质工作和国民经济中的利用受到严重制约.本文基于中比例尺地质图保密技术处理的研究,提出了将地质图上涉密信息删除的处理流程和方法,形成一套比较完整的中比例尺地质图技术处理方法体系,并制作完成了一系列1∶20万、1∶25万、1∶50万公开版空间地质图数据库,提升了地质资料社会化服务水平,并为地质工作的推进和社会经济发展提供了基础数据.%Due to the confidentiality of the geographical base map,the application of the medium scale geological maps to geological task and economic development is being excessively curbed at present.This paper studied security technology processing flow of public version of medium scale geological maps and formed key techniques of the workflow which includes removing classified information on geological map.The results have formed public version of spatial database which contained 1∶200 000,1∶250 000 and 1∶500 000 geological maps.It provided convenience on obtaining geological data to promote geological work and society-economy development.