CN108921266B - Static two-dimensional code encryption display method and device based on image segmentation - Google Patents
Static two-dimensional code encryption display method and device based on image segmentation Download PDFInfo
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- CN108921266B CN108921266B CN201811149896.4A CN201811149896A CN108921266B CN 108921266 B CN108921266 B CN 108921266B CN 201811149896 A CN201811149896 A CN 201811149896A CN 108921266 B CN108921266 B CN 108921266B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
- G06K19/06037—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking multi-dimensional coding
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/11—Region-based segmentation
Abstract
The invention discloses a static two-dimensional code encryption display method and device based on image segmentation, comprising the following steps: acquiring a static two-dimensional code to be encrypted and displayed; dividing the obtained static two-dimensional code into a plurality of local images according to the number of matrix modules of the static two-dimensional code, wherein adjacent local images are provided with overlapping areas; storing all the acquired local images in a memory; and sequentially reading the local images in the memory, so that all the local images are circularly played in an animation mode, and the encrypted display of the static two-dimensional code is realized. The static two-dimensional code is divided, encrypted and displayed based on image division, so that the static two-dimensional code can be prevented from being copied to a certain extent, and the use safety of the static two-dimensional code can be improved.
Description
Technical Field
The invention belongs to the technical field of two-dimensional codes and image segmentation, and particularly relates to a static two-dimensional code encryption display method and device based on image segmentation.
Background
The two-dimensional code is a means for storing information by recording data symbol information by black and white patterns distributed on a plane (i.e. two-dimensional direction) according to a certain rule by using a certain specific geometric figure. The two-dimensional code has the main function of improving efficiency in various fields, and is well favored by users due to the characteristics of good confidentiality, low cost, large information capacity, high error correction rate and the like since the coming of the market. Now, the two-dimension code technology is combined with a mobile internet and an intelligent terminal, and the two-dimension code has a wider application platform.
With the popularization of mobile terminals, users of two-dimensional codes grow explosively, and the application range is wider, but meanwhile, the safety problem caused by the two-dimensional codes is more and more prominent.
Most of the existing static two-dimensional codes are displayed in a picture form through a handheld terminal and related mobile screen equipment, and two-dimensional code information is easy to copy. After the static two-dimensional code is copied and maliciously tampered, trojan and virus may be contained, which may cause security risk, and scanning the maliciously tampered two-dimensional code may bring economic loss or leakage of important information to a user.
Disclosure of Invention
The invention aims to provide a static two-dimensional code encryption display method and device based on image segmentation so as to solve the existing technical problems. The static two-dimensional code is divided, encrypted and displayed based on image division, so that the static two-dimensional code can be prevented from being copied to a certain extent, and the use safety of the static two-dimensional code can be improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a static two-dimensional code encryption display method based on image segmentation comprises the following steps:
step 1, acquiring a static two-dimensional code to be encrypted and displayed;
step 2, dividing the static two-dimensional code obtained in the step 1 into a plurality of local images according to the number of matrix modules of the static two-dimensional code, wherein adjacent local images are provided with overlapping areas;
step 3, storing all local images acquired in the step 2 in a memory;
and 4, sequentially reading the local images in the memory, and circularly playing all the local images in an animation form to realize the encrypted display of the static two-dimensional code.
Further, the static two-dimensional code in step 1 is a static two-dimensional code whose specification is n × n, which is generated by converting the preset information into a binary file and performing mask processing.
Further, step 3 specifically includes: opening a plurality of storage spaces in a memory, storing a local image in each storage space, and sequentially storing until the local images are completely stored; the number of the storage spaces is larger than or equal to the number of the local images.
Further, in step 3, the number of the storage spaces is 177; the number of the local images is 2-177.
Further, in step 4, setting a clock parameter to control the local image to perform screen refreshing frame type playing according to a preset frame number, and forming a circular playing animation; setting position parameters to control the local images to be played at preset display positions.
Further, the method for segmenting the local image of the static two-dimensional code in the step 2 specifically includes: when the static two-dimensional code image is segmented, starting from the left edge or the right edge of the static two-dimensional code image, performing column segmentation according to the matrix modules through a segmentation line, wherein the segmentation line is positioned at the junction of two preset matrix modules on the static two-dimensional code; and (3) expanding a matrix module column outwards at the division line of the preliminary division image obtained by division to obtain a final local image.
A static two-dimensional code encryption display device based on image segmentation, based on the encryption display method of the invention, comprises: the device comprises a triggering unit, a comprehensive processing unit, an image segmentation unit, a memory and a display; the output end of the trigger unit is connected with the receiving end of the comprehensive processing unit; the output end and the receiving end of the comprehensive processing unit are respectively connected with the image segmentation unit and the receiving end and the output end of the memory; the static two-dimensional code stored in the memory can be input into the image segmentation unit, and the image segmentation unit can obtain a local image and input the local image into the memory; the output end of the memory is connected with the receiving end of the display, and the display is used for circularly playing all the local images.
Further, the integrated processing unit includes: the system comprises an information acquisition module, a clock position module and an integration module; the information acquisition module is used for acquiring external information; the clock position module is used for loading clock parameters and position parameters; and the integration module is used for integrating the local images, the clock parameters and the position parameters to form an image stream capable of being played.
Further, the image segmentation unit includes: the device comprises a matrix module identification module and a matrix module division module;
the matrix module identification module is used for identifying a matrix module in the static two-dimensional code;
a matrix module dividing module for dividing the static two-dimensional code to obtain a local image
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a static two-dimensional code encryption display method and device based on image segmentation, which can realize the encryption display of a static two-dimensional code by segmenting an original static two-dimensional code into a plurality of small images and playing the small images in an animation mode, and can prevent the static two-dimensional code from being copied and tampered to a certain extent compared with the traditional picture static output mode of the static two-dimensional code; by changing the clock parameter and the position parameter, the display time and the display position of each small image on the screen can be adjusted, and the applicability is strong. The two-dimensional code displayed in an encrypted mode is continuously shot through the camera, the two-dimensional code can be restored by carrying out image splicing processing on the acquired image group, and decryption of the static two-dimensional code is achieved.
Furthermore, the small divided images all have image overlapping areas, so that image splicing is facilitated to realize decryption and read information, and the decryption processing speed is high.
Drawings
Fig. 1 is a schematic flowchart of a static two-dimensional code encryption display method based on image segmentation according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating a conventional static two-dimensional code;
fig. 3 is a schematic diagram of a static two-dimensional code divided into N images in the static two-dimensional code encryption display method based on image division according to the embodiment of the present invention;
fig. 4 is a block diagram schematically illustrating a structure of a static two-dimensional code encryption and decryption apparatus based on image segmentation according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
Referring to fig. 1 to 3, a static two-dimensional code encryption display method based on image segmentation of the present invention includes the following steps:
step 101: reading the set information which needs to be compiled into a static two-dimensional code.
Step 102: the acquired set information is converted into a binary file, and an original static two-dimensional code image with a specification of 29 × 29 subjected to mask processing is generated, as shown in fig. 2.
Step 103: dividing the obtained original static two-dimensional code image according to a matrix module to form N small images which are different in size and rectangular in shape, wherein if the number N (29) of the matrix modules on one side of the two-dimensional code is divided by N to obtain M, M dividing points are just uniformly distributed at the junction of the modules, if N divides the M by N, the first N-1 small images are formed by M module columns, and the last small image is formed by M + M module columns; as shown in fig. 3. Specifically, the number N of the small images obtained by the segmentation can be set in advance within a range of 2-177 according to the size of the set information, the selected two-dimensional code version and the application scene; when an image is segmented, column segmentation is carried out on any side of a rectangular original two-dimensional code image according to matrix modules, segmentation points are located at the junction of every two modules on the original two-dimensional code image, if the number N of the matrix modules on one side of the two-dimensional code is divided into M by N, M segmentation points are just evenly distributed at the junction of the modules, if N is divided into N quotient M and M quotient, the first N-1 small images are composed of M module columns, and the last small image is composed of M + M module columns; and if one of the division points is positioned at the boundary of the original two-dimensional code image, the division point is only extended outwards from the other division point.
That is, step 103 specifically includes:
dividing the original static two-dimensional code image, wherein the number N of the divided small images can be set in a range of 2-177 in advance according to the size of set information, the selected two-dimensional code version and the application scene;
when the image is segmented, column segmentation is carried out on the edge of any one side of the original two-dimensional code image according to the matrix modules, segmentation points are located at the junction of every two modules on the original static two-dimensional code image, the number of the segmentation points is determined according to the number N of the small segmented images, and the number of the segmentation points is N + 1;
and if one of the division points is positioned at the boundary of the original two-dimensional code image, the division points are only extended outwards from the other division point.
And 104, opening 177 storage spaces in the storage, storing the small images from the first storage space each time, storing one small image in each storage space, sequentially storing the small images until the N small images are completely stored, and finally generating a plurality of small images which are sequenced according to a certain sequence.
Step 105: reading small images from the storage space in sequence according to the set clock parameters and position parameters, performing screen-swiping frame-type playing on the small images on a screen according to the specific display position and the frame number to form animation played in a circulating manner, and finishing the encrypted display of the static two-dimensional code
Step 106: and scanning the encrypted and displayed static two-dimensional code, and splicing the scanned images to realize decryption and restoration of the static two-dimensional code.
The encryption method provided by the invention can be displayed on a display as the two-dimensional code small image played in an animation mode, and the two-dimensional code small image can be perceived by naked eyes as a piece of two-dimensional code small image, but cannot be clearly distinguished and memorized. Only one image is shot and information cannot be read, so that the possibility of shooting and copying is avoided, and meanwhile, the small images divided in the embodiment all have image overlapping areas, so that image splicing is convenient to implement, and information is read.
Referring to fig. 4, an image segmentation based static two-dimensional code encryption and decryption apparatus according to the present invention is based on an apparatus having a text editor, an image processor, and a communication function, such as a mobile phone, a tablet computer, and the like having the text editor, the image processor, and the communication function, and the embodiment of the present invention is not limited thereto. The invention relates to a static two-dimensional code encryption and decryption device based on image segmentation, which comprises: a trigger button 201 connected to the integrated processing unit 202 for sending a trigger signal to the integrated processing unit; the comprehensive processing unit 202 is connected with the trigger button 201, the image segmentation unit 203 and the memory 204 respectively, and is used for reading information from the memory after receiving a trigger signal of the trigger button, generating an original two-dimensional code image and then sending the generated two-dimensional code image to the image segmentation module; the image segmentation unit 203 is connected to the integrated processing unit 202 and the display 205, and is configured to perform segmentation processing on the original two-dimensional code image sent by the integrated processing unit, and then store the segmented image in a memory; the memory 204 is connected with the comprehensive processing unit and is used for storing information and small images which need to be compiled into two-dimensional codes; and the display 205 is connected with the memory and is used for displaying the processed small image group. The receiving end and the output end of the image segmentation unit are respectively connected with the output end and the receiving end of the memory, the static two-dimensional code stored in the memory can be input into the image segmentation unit, and the image segmentation unit can obtain a local image and input the local image into the memory; the output end of the memory is connected with the receiving end of the display, and the display is used for circularly playing all the local images.
The comprehensive processing unit specifically comprises: the information acquisition module 206 is configured to acquire set information that needs to be compiled into a two-dimensional code; the clock position module 207 is used for loading clock parameters and position parameters according to the size of the set information, the selected two-dimensional code version and the requirement of 2-177 small images set by the application scene; the integration module 208 integrates the plurality of small images and the clock parameters corresponding to the small images into an image stream continuously changed according to the clock parameters and the position parameters.
The image segmentation unit specifically comprises: a matrix module identification module 209 for identifying a matrix module of the original two-dimensional code image; the matrix module dividing module 210 is configured to perform segmentation processing on the original two-dimensional code image to generate a plurality of small images with different sizes and shapes.
At present, although the high-version two-dimensional code can contain more information to prevent malicious tampering, in practical application, the high-version two-dimensional code is difficult to identify due to the limitation of reading equipment. The traditional two-dimensional code is taken as a carrier, a plurality of new two-dimensional code encryption modes and anti-copy methods appear, such as a grating two-dimensional code, the change of the visual effect of the two-dimensional code is realized, and the two-dimensional code can only be identified from a specific angle; for example, two-dimensional codes are transformed at high speed, the coded information is segmented to form a plurality of dynamic two-dimensional code images respectively, and the generating and identifying speed is low. The invention discloses a display method and a device of an image segmentation type two-dimensional code; the display method comprises the following steps: reading set information needing to be compiled into a two-dimensional code; converting the acquired set information into a binary file, and generating an original two-dimensional code image subjected to mask processing; and segmenting the original two-dimensional code image according to a matrix module of the original two-dimensional code image to form a plurality of small images which are different in size and shape and are sequenced according to a certain sequence. When the image is segmented, column segmentation is carried out on one side of the original two-dimensional code image according to the matrix modules, and segmentation points are located at the junction of every two modules on the original two-dimensional code image; the divided small images are obtained by respectively expanding a module column to the left and the right at the two determined division points; the sorting is performed by means of the order of the storage space. The encryption display device includes: the device comprises a trigger button, a comprehensive processing unit, an image segmentation unit, a memory and a display, and is used for displaying a plurality of small images in an animation mode. The invention provides a method and a device for displaying two-dimensional code by image segmentation, which completely solve the problem of copy prevention of electronic two-dimensional code because the original two-dimensional code is segmented into a plurality of small images and played on a display in an animation mode instead of the traditional single-image static output mode, and simultaneously because the changeability of clock parameters and position parameters and the display time and the display position of the small images on a screen are all changeable. The two-dimensional code displayed by the invention can be rapidly and continuously shot by adopting the camera during reading, and then the shot image group is subjected to image splicing treatment to restore the two-dimensional code.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently modified; such modifications or variations do not depart from the spirit and scope of the corresponding technical solutions.
Claims (7)
1. A static two-dimensional code encryption display method based on image segmentation is characterized by comprising the following steps:
step 1, acquiring a static two-dimensional code to be encrypted and displayed;
step 2, dividing the static two-dimensional code obtained in the step 1 into a plurality of local images according to the number of matrix modules of the static two-dimensional code, wherein adjacent local images are provided with overlapping areas;
step 3, storing all local images acquired in the step 2 in a memory;
step 4, reading the local images in the memory in sequence, and enabling all the local images to be played circularly in an animation mode according to the set clock parameters and the set position parameters to realize the encrypted display of the static two-dimensional code;
in step 4, setting a clock parameter to control the local images to be played in a screen refreshing frame mode according to a preset frame number to form a circular playing animation, setting a position parameter to control the local images to be played at a preset display position, and changing the clock parameter and the position parameter to enable the display time and the display position of each local image on the screen to be variable.
2. The static two-dimensional code encryption display method based on image segmentation as claimed in claim 1,
the static two-dimensional code in the step 1 is a static two-dimensional code with specification of n × n generated by converting preset information into a binary file and performing mask processing.
3. The image segmentation-based static two-dimensional code encryption display method according to claim 1, wherein step 3 specifically includes: opening a plurality of storage spaces in a memory, storing a local image in each storage space, and sequentially storing until the local images are completely stored; the number of the storage spaces is larger than or equal to the number of the local images.
4. The image segmentation-based static two-dimensional code encryption display method according to claim 3, wherein in step 3, the number of storage spaces is 177; the number of the local images is 2-177.
5. The image segmentation-based static two-dimensional code encryption display method according to claim 1, wherein the local image segmentation method of the static two-dimensional code in step 2 specifically comprises:
when the static two-dimensional code image is segmented, starting from the left edge or the right edge of the static two-dimensional code image, performing column segmentation according to the matrix modules through a segmentation line, wherein the segmentation line is positioned at the junction of two preset matrix modules on the static two-dimensional code; and (3) expanding a matrix module column outwards at the division line of the preliminary division image obtained by division to obtain a final local image.
6. A static two-dimensional code encryption display device based on image segmentation is characterized in that the encryption display method based on any one of claims 1 to 5 comprises the following steps: the device comprises a triggering unit, a comprehensive processing unit, an image segmentation unit, a memory and a display;
the output end of the trigger unit is connected with the receiving end of the comprehensive processing unit;
the output end and the receiving end of the comprehensive processing unit are respectively connected with the image segmentation unit and the receiving end and the output end of the memory; the static two-dimensional code stored in the memory can be input into the image segmentation unit, and the image segmentation unit can obtain a local image and input the local image into the memory;
the output end of the memory is connected with the receiving end of the display, and the display is used for circularly playing all local images;
wherein, comprehensive processing unit includes: the system comprises an information acquisition module, a clock position module and an integration module; the information acquisition module is used for acquiring external information; the clock position module is used for loading clock parameters and position parameters; and the integration module is used for integrating the local images, the clock parameters and the position parameters to form an image stream capable of being played.
7. The device for encrypting and displaying the static two-dimensional code based on the image segmentation as claimed in claim 6, wherein the image segmentation unit comprises: the device comprises a matrix module identification module and a matrix module division module;
the matrix module identification module is used for identifying a matrix module in the static two-dimensional code;
and the matrix module division module is used for carrying out segmentation processing on the static two-dimensional code to obtain a local image.
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| CN111401884A (en) * | 2020-03-10 | 2020-07-10 | 维沃移动通信有限公司 | Display method and device and electronic equipment |
| CN111582857A (en) * | 2020-04-30 | 2020-08-25 | 中国工商银行股份有限公司 | Two-dimensional code display method and device, electronic equipment and medium |
| CN112686352A (en) * | 2020-12-28 | 2021-04-20 | 新辉开科技（深圳）有限公司 | Electronic license plate with verification function and electronic license plate verification system |
| CN112686008A (en) * | 2021-02-03 | 2021-04-20 | 广州市久邦数码科技有限公司 | Recording and viewing management method and system for reading notes of electronic book |
| CN114189744B (en) * | 2021-11-03 | 2024-02-23 | 日立楼宇技术（广州）有限公司 | Multimedia playing method, system and device based on two-dimension code and display screen |
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