Research on Tilt Correction Algorithms of Destorted Data Matrix Code Image

GUAN Bo-yi; DONG Jing-wei; MA Xiao-feng; XU Bo

doi:10.15938/j.jhust.2018.05.017

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Research on Tilt Correction Algorithms of Destorted Data Matrix Code Image

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- Research on Tilt Correction Algorithms of Destorted Data Matrix Code Image
- Vol. 23, Issue 5, Pages: 100-105(2018)
- 作者机构：
  
  哈尔滨理工大学测控技术与通信工程学院，测控技术与仪器黑龙江省高校重点实验室,黑龙江,哈尔滨,150080
- 作者简介：
- 基金信息：
- DOI：10.15938/j.jhust.2018.05.017
  CLC： TP751.1
- Published：2018
- 稿件说明：
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GUAN Bo-yi, DONG Jing-wei, MA Xiao-feng, et al. Research on Tilt Correction Algorithms of Destorted Data Matrix Code Image[J]. 2018, 23(5): 100-105.
DOI：

GUAN Bo-yi, DONG Jing-wei, MA Xiao-feng, et al. Research on Tilt Correction Algorithms of Destorted Data Matrix Code Image[J]. 2018, 23(5): 100-105. DOI： 10.15938/j.jhust.2018.05.017.

摘要

摘要:针对Data Matrix码倾斜校正中需要多次旋转的问题，本文提出了一种畸变二维码倾斜校正方法。首先使用LoG算子对二值化后的图像进行边缘检测，再基于Data Matrix码的结构特征，通过Hough变换有效快速地确定定位符“L”所在的位置，并将“L”型交点用两条向量表示。然后通过向量叉乘计算出Data Matrix码的旋转角度、确定旋转方向，只需一次旋转即可实现倾斜校正。本文算法节省了Data Matrix码在图像恢复过程中所需的时间和工作量。

Abstract

Abstract:Aiming at the problem of multiple rotations in the tilting correction of Data Matrix code

a tilt correction method for distorted 2-D code is proposed in this paper. First

the LoG operator is used to detect the edge of the binary image

and then based on the structural features of the Data Matrix code

the location of the locator “L” is quickly determined by the Hough transform

and the “L” intersection point is expressed with two vectors. By vector cross product the rotation angle of Data Matrix code is calculated and the direction of rotation is determined then. So

only one rotation is needed to achieve tilt correction. This algorithm saves the time and workload of Data Matrix code in the process of image restoration.

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