为帮助船舶快速规避碍航物，提出电子海图目标信息快速检索方法。首先，采用墨卡托投影方法对电子海图实施投影转换，从中取得电子海图地理经纬度，并构建索引数据结构表，依据表中的前3项要素获取电子海图完整信息，从而确定目标信息检索区域。在采集目标信息数据后，提取其中的语义关联指向特征，将其用于指向性索引路径，从而实现目标信息快速检索。实验结果表明，该方法具有实时性强、有效性高的应用优势。
In order to help ships avoid obstacles quickly, a fast retrieval method for target information of ship electronic chart is proposed. First, the Mercator projection method is used to transform the projection of the ship's electronic chart, from which the geographic longitude and latitude of the electronic chart are obtained, and the index data structure table is constructed. The complete information of the electronic chart is obtained according to the first three elements in the table, so as to determine the target information retrieval area. Then, after the target information data is collected, the semantic association oriented feature is extracted and used for the directional index path, so that the target information can be quickly retrieved. The experimental results show that this method has the advantages of strong real-time and high effectiveness.
2022,44(24): 137-140 收稿日期：2022-08-30
DOI：10.3404/j.issn.1672-7649.2022.24.028
分类号：TP391
作者简介：张昇(1970-),女,硕士,高级实验师,研究方向为电子及计算机物理仿真
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