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Encrypted graph structure, encoding method and device, and recognition method and device

A technology of graphic structure and encoding method, which is applied in the direction of computer security devices, record carriers used by machines, instruments, etc., can solve the problems of reducing the efficiency of encoding graphic recognition, increasing the complexity of decoding and recognition algorithms, and sacrifices, so as to increase storage capacity, The effect of improving adaptability and fault tolerance performance

Pending Publication Date: 2021-05-28
CHINA BANKNOTE SECURITY PRINTING TECH RES INST CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This approach sacrifices the capacity of graphic encoding to store effective user data, increases the complexity of decoding and recognition algorithms, and reduces the efficiency of encoding graphic recognition

Method used

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  • Encrypted graph structure, encoding method and device, and recognition method and device
  • Encrypted graph structure, encoding method and device, and recognition method and device
  • Encrypted graph structure, encoding method and device, and recognition method and device

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Embodiment Construction

[0123] In order to make the technical features and effects of this paper more obvious, the technical solutions of this paper will be further described below in conjunction with the accompanying drawings. This paper can also have other different specific examples for description or implementation. Any person skilled in the art can do it within the scope of claims The equivalent transformations of all belong to the protection scope of this article.

[0124] In the description of this specification, description with reference to the terms "an embodiment", "a particular embodiment", "some implementations", "for example", etc. means the specific features, structures, materials described in connection with the embodiment or example Or features are included in at least one embodiment or example herein. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, mater...

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Abstract

The invention provides an encrypted graphic structure, a coding method and device, and an recognition method and device. Wherein the encrypted graphic structure is provided with a storage structure and is formed by arranging at least one storage structure in an adjacent but non-overlapping manner, the storage structure comprises at least three subunits, and the subunits are arranged around the same central point in a non-overlapping manner; each subunit is composed of code elements, the code elements located on the side, away from the vertex, of the subunit form a positioning area, and the other code elements form a data area; the positioning areas are asymmetrically distributed relative to the central point and are used for positioning the position of the storage structure; the data area is used for storing user data. According to the encryption graph structure provided by the invention, the storage structure has a hiding effect, flexible and changeable appearance shapes can be provided, the limitation of a traditional storage structure on the appearance shapes is broken through, and the requirements of users in different use scenes are better met.

Description

technical field [0001] This paper relates to the field of graph encryption, and in particular, to an encrypted graph structure with a storage function, an encoding method and device, and an identification method and device. Background technique [0002] In recent years, with the continuous development of graphics coding technology and image processing technology, coded graphics technologies such as two-dimensional codes and digital watermarks have developed rapidly, and have been widely used in mobile payment, securities, information traceability, product packaging, Internet of Things and other fields. widely used. [0003] Traditional coding graphics with storage functions, such as two-dimensional codes, etc., are usually limited in appearance to fixed shapes such as rectangles or circles, and the appearance is very simple and lacks diversity. In order to facilitate program reading, traditional coding graphics usually exist independently in product design, and it is diffic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K19/06G06F21/60
CPCG06K19/06046G06F21/602
Inventor 姜君于欣李彦平郑可新倪罡
Owner CHINA BANKNOTE SECURITY PRINTING TECH RES INST CO LTD
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