Prep-deformation method for two-dimensional code on cylindrical surface

A two-dimensional code and deformation technology, applied in the field of two-dimensional code encoding and decoding

Active Publication Date: 2016-03-02
BEIJING INSTITUTE OF GRAPHIC COMMUNICATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the two-dimensional code needs to be printed on a plane or an approximate plane in the application, and the two-dimensional code image printed on the curved surface will be deformed and cannot be recognized

Method used

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  • Prep-deformation method for two-dimensional code on cylindrical surface
  • Prep-deformation method for two-dimensional code on cylindrical surface
  • Prep-deformation method for two-dimensional code on cylindrical surface

Examples

Experimental program
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Embodiment Construction

[0015] exist image 3 Among them, the pre-deformed two-dimensional code image 3 is printed on the curved surface 5 of the cylinder 1 with a radius R, and the standard two-dimensional code image 2 is printed on the plane 4, and the center line O of the standard two-dimensional code image 2 and the axis of the cylinder 1 Coincidentally, the center line O of the standard two-dimensional code image 2 is parallel to the center line Q of the pre-deformed two-dimensional code image 3, and the pre-deformed two-dimensional code image 3 is facing the standard two-dimensional code image 2,

[0016] The pixel point data table of the standard two-dimensional code image 2 is n rows and m columns, and the pixel point data table of the pre-deformed two-dimensional code image 3 is N rows and M columns. The pre-deformation process is to convert the pixel point data of the standard two-dimensional code image 2 Assign the value of the table to the pixel point data table of the pre-deformed two-di...

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Abstract

The invention discloses a pre-deformation method for a two-dimensional code on a cylindrical surface. The method comprises the steps of carrying out lateral pre-deformation treatment on a standard two-dimensional code image according to a cylindrical surface radius to generate a pre-deformation two-dimensional code image corresponding to the cylindrical surface radius; printing the pre-deformation two-dimensional code image on a small-diameter cylindrical commodity so that the two pieces of information obtained from the pre-deformation two-dimensional code image scanned and printed on the cylindrical commodity and a standard two-dimensional code image scanned and printed in the plane are the same, thus the image distortion of a two-dimensional code image printed on a cylindrical surface is eliminated.

Description

Technical field: [0001] The present invention involves a two -dimensional code coding decoding method, especially the QR code pre -forming method on the cylindrical surface. This method can be processed through the QR code pre -transformation to eliminate the deformation produced by the QR code on the small diameter cylindrical product.distortion. Background technique: [0002] At present, with the increasing maturity of QR code encoding and decoding technology, the application of QR code in daily life is becoming more and more wide. Media advertising, anti -counterfeiting labels, business card social networking, ticket management, and electronic payment are basedThe carrier is connected to online and offline.However, the QR code needs to be printed on the plane or approximate plane in the application, and the QR code image printed on the curved surface will be deformed and cannot be recognized. Invention content: [0003] In order to use and correctly identify the two -dimens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T3/00G06K19/06
CPCG06K19/06037G06T3/0012
Inventor 游福成王惠华李泉
Owner BEIJING INSTITUTE OF GRAPHIC COMMUNICATION
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