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The Structure Recognition and Extraction Method of Electronic Form Based on CAD Basic Elements

A technology of electronic form and extraction method, which is applied in the direction of structured data retrieval, database indexing, and special data processing applications, etc., can solve the problems of restricting design production efficiency, lack of structured data, and low recognition accuracy, and achieve easy implementation, The effect of fast recognition and high recognition accuracy

Active Publication Date: 2022-07-26
HUNAN PROVINCIAL COMM PLANNING SURVEY & DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of table composed of basic elements has the appearance of a table, but in fact it is a loose collection of straight lines, single-line or multi-line text, without structured data, and cannot interact with spreadsheet programs such as EXCEL, which restricts Improvement of Design Productivity Improvement
[0004] Some practitioners have also tried to use programs to recognize the table structure based on CAD basic elements, but there are generally problems with complex algorithms, many restrictions, and low recognition accuracy.

Method used

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  • The Structure Recognition and Extraction Method of Electronic Form Based on CAD Basic Elements
  • The Structure Recognition and Extraction Method of Electronic Form Based on CAD Basic Elements
  • The Structure Recognition and Extraction Method of Electronic Form Based on CAD Basic Elements

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Embodiment Construction

[0051] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0052] like figure 1 As shown, the electronic form structure identification and extraction method based on CAD basic elements of the present invention, its steps include:

[0053] Step S1: Open AutoCAD and read the file data of the drawing file to be output in the supported format (such as DWG, DXF, etc.).

[0054] Step S2: The user selects the lines and text objects that form a table, and saves them as a set of text objects and a set of line objects; in specific applications, if there are polyline and multi-line text types in the elements constituting the table, you can The object executes the explode command until the table consists of straight lines and a single line of text.

[0055] Step S3: For the selected several straight lines, calculate the intersection points between them, store the intersection points in the intersection p...

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Abstract

The invention discloses a method for identifying and extracting the structure of electronic forms based on CAD basic elements. It is a set of text objects and a set of line objects; S3: For all the straight lines selected, calculate the intersection between them, and store the intersection in the intersection set; sort; S4: Calculate the difference between the first element and the last element of the intersection set The distance is used as the length of the auxiliary line; S5: Obtain the coordinate values ​​of all elements in the intersection set, and arrange them in order; S6: For each element in the text set, perform a loop traversal operation to obtain the corresponding structured information; S7: Complete all texts After structured identification of set elements, extract all structured unit information data to a spreadsheet. The invention has the advantages of simple principle, easy realization, high processing efficiency, wide application range and the like.

Description

technical field [0001] The invention mainly relates to the technical field of computer aided design, in particular to a table structure identification and extraction method based on CAD basic elements. Background technique [0002] CAD (Computer Aided Design) computer-aided design is an important application field of computer technology. AutoCAD is an interactive drawing software developed by Autodesk in the United States. It is a system tool for 2D and 3D design and drawing. Users can use it to create, browse, manage, print, output, and share information-rich design graphics. As a general-purpose drawing software, AutoCAD is widely used in design work in various industries. [0003] AutoCAD drawing design information is mainly divided into two categories: graphics and tables. Among them, the table mainly carries various project quantity information, which is the main content of design expression, and plays an important role in various aspects of project management such as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/22G06F16/25
CPCG06F16/2282G06F16/258
Inventor 贺耀北刘婷婷王永杨云逸李瑜李文武
Owner HUNAN PROVINCIAL COMM PLANNING SURVEY & DESIGN INST CO LTD