Text line character segmentation method and device based on projection

A character segmentation and text line technology, applied in the field of image recognition, to achieve the effect of improving accuracy, low complexity, and accurate judgment

Pending Publication Date: 2020-11-20
BEIJING LUSTER LIGHTTECH
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  • Abstract
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Problems solved by technology

[0004] This application provides a projection-based text line character segmentation method and device to solve the

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  • Text line character segmentation method and device based on projection
  • Text line character segmentation method and device based on projection
  • Text line character segmentation method and device based on projection

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Embodiment Construction

[0068] The embodiments will be described in detail hereinafter, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following examples do not represent all implementations consistent with this application. These are merely examples of systems and methods consistent with aspects of the present application as recited in the claims.

[0069] see figure 1 , is a flowchart of an embodiment provided in the first aspect of the present application.

[0070] The first aspect of the present application provides a projection-based text line character segmentation method, comprising the following steps:

[0071] Obtain the image of the text line to be segmented;

[0072] According to the image of the text line to be segmented, determine whether the font in the image...

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Abstract

The invention belongs to the technical field of image recognition, and particularly relates to a text line character segmentation method and device based on projection. In the technical field of imagerecognition, a conventional optical character recognition technology needs to be improved urgently in recognition rate and accuracy. The invention provides the text line character segmentation methodand device based on projection. The method determines the actual width and height of a single character through horizontal projection and vertical projection, and the method is accurate in judgment of the upper and lower boundaries of the character and is high in robustness; through inclined font correction, the application range of character segmentation is expanded. Character projection data are subjected to weighted summation by adopting a gray image vertical projection curve, a binary image vertical projection curve and an edge intensity difference variance projection curve; the accuracyand reliability of character boundary judgment are improved, accurate and rapid character segmentation is facilitated, and segmentation of lightly adhered characters and adhered special characters isalso effective.

Description

technical field [0001] The present application relates to the technical field of image recognition, and in particular to a projection-based text line character segmentation method and device. Background technique [0002] In the field of image recognition technology, especially in optical character recognition, because the width and height of characters are not exactly the same, it is usually impossible to use equal width and height for segmentation. Therefore, it is necessary to perform precise segmentation for each character to be efficient and accurate character recognition. [0003] How to more accurately and efficiently segment the upper, lower, left, and right boundaries of a single character to avoid character over-segmentation or under-segmentation has always been a challenge in optical character recognition technology. The currently used character segmentation technologies mainly include algorithm recognition segmentation, horizontal projection method and connected...

Claims

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Application Information

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IPC IPC(8): G06K9/34G06K9/32
CPCG06V30/1478G06V30/153G06V30/10
Inventor 王玉娇
Owner BEIJING LUSTER LIGHTTECH
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