Text image correction method and device, equipment and medium

A text image and image technology, applied in character and pattern recognition, instruments, computer parts, etc., can solve the problems that the text recognition effect of curved reading materials needs to be improved.

Pending Publication Date: 2021-03-23
NEXTVPU SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitations of the correction algorithm itself, the text recognition effect for curved reading materials still needs to be improved

Method used

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  • Text image correction method and device, equipment and medium
  • Text image correction method and device, equipment and medium
  • Text image correction method and device, equipment and medium

Examples

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Embodiment Construction

[0019] In the present disclosure, unless otherwise stated, using the terms "first", "second", etc. to describe various elements is not intended to limit the positional relationship, temporal relationship or importance relationship of these elements, and such terms are only used for Distinguishes one element from another. In some examples, the first element and the second element may refer to the same instance of the element, and in some cases, they may also refer to different instances based on contextual description.

[0020] The terminology used in describing the various described examples in this disclosure is for the purpose of describing particular examples only and is not intended to be limiting. Unless the context clearly indicates otherwise, if the number of elements is not specifically limited, there may be one or more elements. In addition, the term "and / or" used in the present disclosure covers any one and all possible combinations of the listed items.

[0021] Re...

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Abstract

The invention provides a text image correction method, which comprises the steps of starting at least two lasers, and projecting emitted laser onto a to-be-recognized object to form at least two laserlines on the to-be-recognized object; obtaining an initial image which is obliquely shot by a camera when at least two lasers are started and comprises the to-be-recognized object, the initial imagecomprising at least two laser rays, and an optical axis of the camera being not perpendicular to a placement surface of the to-be-recognized object; determining a rotation matrix that the to-be-identified object rotates around a set point on the to-be-identified object to be perpendicular to the optical axis of the camera; determining a 3D image corresponding to the initial image at least based onthe at least two laser lines; obtaining a rotation correction image obtained by rotating the 3D image around a set point to be perpendicular to the optical axis of the camera by using the rotation matrix; and flattening and correcting the rotation correction image to obtain a final correction image.

Description

technical field [0001] The present application relates to the technical field of artificial intelligence, in particular to a text image correction method, device, equipment and medium. Background technique [0002] In the related art, before text recognition is performed on a reading material such as a book or a magazine, the image may be corrected for bending, so as to overcome the problem that the accuracy of character recognition is affected by the bending of the reading material. However, due to the limitations of the correction algorithm itself, the text recognition effect on curved reading materials still needs to be improved. [0003] The approaches described in this section are not necessarily approaches that have been previously conceived or employed. Unless otherwise indicated, it should not be assumed that any approaches described in this section are admitted to be prior art solely by virtue of their inclusion in this section. Similarly, issues mentioned in this...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/36G06K9/20
CPCG06V10/143G06V10/20G06V10/247
Inventor 高敬乾王欢周骥冯歆鹏
Owner NEXTVPU SHANGHAI CO LTD
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