Document chart extraction method, electronic device, and computer-readable storage medium

A technology of electronic equipment and documents, which is applied in the field of computer information, can solve problems such as incorrect extraction and unreasonable design of document charts, etc., and achieve the effect of improving efficiency and coverage

Active Publication Date: 2021-01-08
PING AN TECH (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, existing PDF diagram extraction tools and programs cannot correctly extract diagrams composed of multiple parts such as Office diagrams.
Therefore, the document chart extraction method design in the prior art is not reasonable enough, and needs to be improved urgently

Method used

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  • Document chart extraction method, electronic device, and computer-readable storage medium
  • Document chart extraction method, electronic device, and computer-readable storage medium
  • Document chart extraction method, electronic device, and computer-readable storage medium

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0035] It should be noted that the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and should not be understood as indicating or implying their relative importance or implicitly indicating the number of indicated technical features . Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one...

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Abstract

The invention discloses a method for extracting a document chart, which comprises the steps of: obtaining the position information of all characters in a designated document, and obtaining the distribution information of characters in the designated document according to the position information of all characters; analyzing the characters in the designated document Distribution information, determine the area with low text distribution density in the specified document, or / and the area without text distribution, and mark the area with low text distribution density, or / and no text distribution area as a candidate chart area; converting the marked candidate chart area into a picture, and filtering out a picture containing chart information from the converted picture as the chart extracted from the specified document. The invention can improve the efficiency and coverage of chart extraction.

Description

technical field [0001] The invention relates to the field of computer information technology, in particular to a method for extracting a document chart, electronic equipment and a computer-readable storage medium. Background technique [0002] Most of the existing PDF chart extraction tools and programs are based on PDF storage objects. This method can only extract charts stored as separate image objects, and a PDF document contains more chart information (such as Office charts, etc.) , these charts can visually express part of the information in the document. However, existing PDF diagram extraction tools and programs cannot correctly extract diagrams composed of multiple parts such as Office diagrams. Therefore, the design of document chart extraction methods in the prior art is not reasonable enough and needs to be improved urgently. Contents of the invention [0003] In view of this, the present invention proposes a document chart extraction method, electronic equipm...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G06K9/00
CPCG06V30/413G06V30/414
Inventor王鸿滨王晓伟汪伟苏晓明肖京
OwnerPING AN TECH (SHENZHEN) CO LTD