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Detection method and system for complex formula areas in document image

A document image, detection method technology, applied in character and pattern recognition, instruments, computer parts and other directions, can solve the problem of high algorithm complexity, achieve the effect of simple calculation, fast speed and wide application range

Inactive Publication Date: 2012-07-04
FOUNDER INTERNATIONAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the independent formula line is implemented by the method of parzen window, and the embedded formula is extracted by two-dimensional features and identification features. This method extracts multiple features, and the algorithm complexity is relatively high.

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  • Detection method and system for complex formula areas in document image
  • Detection method and system for complex formula areas in document image
  • Detection method and system for complex formula areas in document image

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Embodiment Construction

[0042] The present invention will be described below in conjunction with the accompanying drawings and specific embodiments.

[0043] The present invention designs a feature for distinguishing the two areas by analyzing the structural features of the text area and the formula area, and uses the feature to detect the complex formula area in the document image and automatically mark the formula area. Core step of the present invention is exactly the detection of formula region, and the key that the present invention solves the above-mentioned technical problem is:

[0044] 1. Neighborhood information encoding calculation method of connected domain.

[0045] 2. A method for detecting complex formula regions in an image by encoding the neighborhood information of connected domains.

[0046] In this embodiment, a detection system for a complex formula area in a document image includes the following devices:

[0047] Image binarization device: used to binarize the document image t...

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Abstract

The invention discloses a detection method and a system for complex formula areas in a document image, relating to the technical field of computer image processing. In order to solve the technical problems, the invention is characterized by (1) a connected-domain neighborhood information code calculation method and (2) a method for detecting the complex formula areas in the image by utilizing the connected-domain neighborhood information codes. By utilization of the invention, the complex formula areas in the document image can be more accurately detected, the speed is high, and the efficiency is high. When the invention is applied in the digital processing flow, the efficiency of the digital processing efficiency can be increased and the labor cost is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of computer image processing, in particular to a method and system for detecting complex formula regions in document images. Background technique [0002] In the process of document image digitization, formulas need to be processed. The existing operation method is to manually mark the formula area, and then paste it in the corresponding digital layout in the form of a picture. Since there are often a large number of mathematical formulas in scientific literature and technical documents, and mathematical formulas are a very complex document structure, the current digital processing process mainly uses manual methods to mark the formula area. This not only brings about a sharp increase in labor costs, but also causes the entire processing process to be restricted by formulas, resulting in inefficiency, which will affect the entire digital processing process. [0003] At present, some domestic patents involv...

Claims

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Application Information

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IPC IPC(8): G06K9/46
Inventor 胡希驰史培培
Owner FOUNDER INTERNATIONAL CO LTD