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Method for associating unstructured navigation book table and electronic chart

An unstructured, electronic chart technology, applied in the direction of unstructured text data retrieval, file access structure, electronic digital data processing, etc. problems, to achieve the effect of improving retrieval efficiency, promoting informatization capabilities, and reasonable design

Pending Publication Date: 2020-03-24
THE CHINESE PEOPLES LIBERATION ARMY 92859 TROOPS
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Problems solved by technology

For unstructured navigation tables, there are characteristics such as multi-level, unstable structure, and content diversity, which cannot directly correspond to relational tables; Extracted, but also a lot of editing and proofreading work

Method used

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  • Method for associating unstructured navigation book table and electronic chart
  • Method for associating unstructured navigation book table and electronic chart
  • Method for associating unstructured navigation book table and electronic chart

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Embodiment Construction

[0030] The implementation of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0031] A method for associating unstructured navigation books and electronic charts, comprising the following steps:

[0032] Step 1. Split and number the navigation book form PDF file according to the hierarchical structure of chapters. Numbers are used for numbering, and every two digits represent a chapter level, and 0 is added at the beginning of the actual lack of two digits; the length of the number is fixed at the deepest level to be processed × 2, that is, the first two digits represent the first-level chapter number, and the next two digits represent the second Level chapter number, and so on; if the current chapter does not contain sub-chapters, the subsequent code assignment will be "00"; the split content corresponding to the current chapter does not contain sub-chapters; create a PDF file according to the minimum pages cover...

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Abstract

The invention relates to a method for associating an unstructured navigation book table with an electronic chart. The method is technically characterized by comprising: splitting and numbering unstructured navigation book table PDF files according to a hierarchical structure of chapters; taking the navigation book table name as a database name, establishing a table with the name as a main table, adding chapter numbers, chapter names, chapter contents, positions, latitudes, longitudes and chart fields, realizing an automatic storage function of the chapter numbers, the chapter names and the chapter contents, and manually supplementing other field contents; by using the tree list and the PDF assembly in a combined mode, realizing the restoration display function of the non-structural navigation book table; and realizing associated interaction between the content of the unstructured navigation book table and graphic display by utilizing the position and chapter number attributes. According to the method, accurate positioning and spatial association of navigation book table data are realized by utilizing PDF file splitting, warehousing and bidirectional retrieval, so that the navigation information query and retrieval efficiency is effectively improved, and the informatization capability of navigation is promoted.

Description

technical field [0001] The invention belongs to the technical field of marine surveying and mapping, in particular to a method for associating unstructured navigation tables and electronic charts. Background technique [0002] Nautical books usually refer to a series of official reference materials used for navigation. The main distribution forms are paper (books) and electronic (PDF files), and the corresponding contents of the two forms are the same. [0003] Some nautical books have structural features, such as tide tables, buoy tables, odometers, sun and moon timetables, etc.; some nautical books have no structural features, such as port guides and route guides, which adopt multi-level chapters , with text, graphics, tables, etc. as the main content. [0004] For a long time, nautical books and charts have adopted their own production and application systems, and the two are independent of each other, lack of correlation, and are difficult to integrate. In today's info...

Claims

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Application Information

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IPC IPC(8): G06F16/31G06F16/387G06F16/338G06F16/14G06F16/13
CPCG06F16/313G06F16/387G06F16/338G06F16/156G06F16/13Y02D10/00
Inventor 陈长林贾俊涛陈长清陈超赵健张博王耿峰
Owner THE CHINESE PEOPLES LIBERATION ARMY 92859 TROOPS
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