| 数字海图线要素数据压缩优化研究与实现 |
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| 引用本文： | 陈子澎,王斌,马洪达,刘秋生.数字海图线要素数据压缩优化研究与实现[J].海洋测绘,2010,30(6):59-62. |
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| 作者姓名： | 陈子澎 王斌 马洪达 刘秋生 |
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| 作者单位： | 海军出版社,天津 300450;海军司令部 航海保证部,天津 300042 |
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| 摘 要： | 深入研究了数字海图线要素出现数据冗余的原因,在此基础上,提出了一套完整详细的数据压缩优化及检查方案,并成功运用于海图实际生产。该方案由压缩优化准备、数据压缩、线要素合并、拓扑重构以及优化质量检查五部分组成。在保证数据质量的前提下,很好的实现了线要素节点数据的压缩,大大降低了数据存储量,提高了数字海图应用效能。
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| 关 键 词： | 数字海图 线要素 压缩 合并 |
Research and Realization on Line Feature Data Compressing and Optimizing for Digital Chart |
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| CHEN Zi-peng,WANG Bin,MA Hong-d,LIU Qiu-sheng.Research and Realization on Line Feature Data Compressing and Optimizing for Digital Chart[J].Hydrographic Surveying and Charting,2010,30(6):59-62. |
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| Authors: | CHEN Zi-peng WANG Bin MA Hong-d LIU Qiu-sheng |
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| Institution: | Navy Press,Tianjin, 300450;Navigation Guarantee Department of Naval Headquarters,Tianjin, 300042 |
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| Abstract: | Base on the research of digital chart line feature which has too many redundant vertexes,this paper proposes an integrated and detailed solution for data compressing and optimizing,along with checking, which has been used in chart production successfully. This solution is composed of five parts:data compressing and optimizing preparation,data compressing,conterminous line feature combining,topology and data checking. By using this solution, on precondition of ensuring data quality, the line feature vertexes are compressed effectively,and data storage is depressed as well,the using efficiency of digital chart is greatly enhanced. |
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