CN110516494B - Two-dimensional code identification method, device, equipment and system - Google Patents
Two-dimensional code identification method, device, equipment and system Download PDFInfo
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- CN110516494B CN110516494B CN201810495509.6A CN201810495509A CN110516494B CN 110516494 B CN110516494 B CN 110516494B CN 201810495509 A CN201810495509 A CN 201810495509A CN 110516494 B CN110516494 B CN 110516494B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
- G06K7/1404—Methods for optical code recognition
- G06K7/1408—Methods for optical code recognition the method being specifically adapted for the type of code
- G06K7/1417—2D bar codes
Abstract
The embodiment of the invention provides a two-dimensional code identification method, a device, equipment and a system, wherein the method comprises the following steps: storing type information of two-dimensional codes with more occurrence times in advance, reading the type information of the two-dimensional codes stored in advance when the two-dimensional codes to be identified exist, and identifying the two-dimensional codes to be identified by utilizing an identification mode corresponding to the read type information of the two-dimensional codes; compared with the identification mode of traversing the two-dimensional code types, the identification efficiency is improved.
Description
Technical Field
The present invention relates to the field of data processing technologies, and in particular, to a two-dimensional code identification method, device, equipment, and system.
Background
Two-dimensional codes (2-dimensional bar code, or called two-dimensional bar codes) have been widely used in various scenes due to their advantages of high information capacity, strong error correction capability, and the like. For example, at present, a two-dimensional code is usually marked on a commodity on a conveyor belt, and the two-dimensional code is identified, so that commodity information can be obtained.
There are various types of two-dimensional codes, such as DM (Data Matrix) codes, or QR (Quick Response) codes, matrix codes, and the like. Different recognition modes aiming at different types of two-dimensional codes. In the existing two-dimensional code recognition scheme, a mode of traversing two-dimensional code types is generally adopted, namely, recognition modes corresponding to various two-dimensional code types are utilized to respectively recognize the two-dimensional codes until recognition results are obtained.
The traversing mode needs to be used for identifying each two-dimensional code for many times, and the identifying efficiency is low.
Disclosure of Invention
The embodiment of the invention aims to provide a two-dimensional code identification method, a device, equipment and a system, so as to improve identification efficiency.
To achieve the above object, an embodiment of the present invention provides a two-dimensional code identification method, including:
acquiring a two-dimensional code to be identified;
reading pre-stored two-dimensional code type information;
and identifying the two-dimensional code to be identified by utilizing an identification mode corresponding to the two-dimensional code type information.
Optionally, the obtaining the two-dimensional code to be identified may include:
acquiring an image to be identified;
based on the image characteristics of the image to be identified, identifying a two-dimensional code area in the image to be identified;
and carrying out background separation on the two-dimensional code area to obtain the two-dimensional code to be identified.
Optionally, after the identifying the two-dimensional code to be identified by using the identifying mode corresponding to the two-dimensional code type information, the identifying method further includes:
outputting a decoding result of the two-dimensional code to be identified;
or outputting the decoding result of the two-dimensional code to be identified and one or more of the following information: the position information of the two-dimensional code to be identified in the image to be identified and the number of the two-dimensional codes contained in the image to be identified.
Optionally, the reading the pre-stored two-dimensional code type information may include:
selecting one target two-dimensional code type information from a plurality of pre-stored two-dimensional code type information according to the priority of the two-dimensional code type information; wherein, the priority is positively correlated with the occurrence times of the two-dimensional code type information;
and reading the type information of the target two-dimensional code.
Optionally, after the identifying the two-dimensional code to be identified by using the identifying mode corresponding to the two-dimensional code type information, the identifying method further includes:
if the decoding result of the two-dimensional code to be identified is not obtained, identifying the two-dimensional code to be identified in a mode of traversing the type of the two-dimensional code;
and after the identification is carried out to obtain the decoding result of the two-dimensional code to be identified, storing the two-dimensional code type information corresponding to the identification mode which is successfully identified.
Optionally, the two-dimensional code type information includes: type and version number of two-dimension code; alternatively, the two-dimensional code type information includes: type, version number and format information of the two-dimensional code.
Optionally, the obtaining the two-dimensional code to be identified includes: acquiring a two-dimensional code of a transmitted object in a conveyor belt, and taking the two-dimensional code as a two-dimensional code to be identified;
The reading the pre-stored two-dimensional code type information may include:
reading a part of two-dimensional code type information in a pre-stored cache queue; the buffer queue comprises two-dimensional code type information of the article positioned before the article is conveyed in the conveyor belt;
after the identifying the two-dimensional code to be identified by using the identifying mode corresponding to the two-dimensional code type information, the identifying method may further include:
if the decoding result of the two-dimensional code to be identified is not obtained, reading a piece of two-dimensional code type information again in a pre-stored cache queue, and identifying the two-dimensional code to be identified by utilizing an identification mode corresponding to the read two-dimensional code type information again; the cache queue comprises a plurality of two-dimensional code type information.
To achieve the above object, an embodiment of the present invention further provides a two-dimensional code identification device, including:
the acquisition module is used for acquiring the two-dimensional code to be identified;
the reading module is used for reading the pre-stored two-dimensional code type information;
the first identification module is used for identifying the two-dimensional code to be identified by utilizing an identification mode corresponding to the two-dimensional code type information.
Optionally, the acquiring module may specifically be configured to:
acquiring an image to be identified; based on the image characteristics of the image to be identified, identifying a two-dimensional code area in the image to be identified; and carrying out background separation on the two-dimensional code area to obtain the two-dimensional code to be identified.
Optionally, the apparatus may further include:
the output module is used for outputting the decoding result of the two-dimensional code to be identified;
or outputting the decoding result of the two-dimensional code to be identified and one or more of the following information: the position information of the two-dimensional code to be identified in the image to be identified and the number of the two-dimensional codes contained in the image to be identified.
Optionally, the reading module may be specifically configured to:
selecting one target two-dimensional code type information from a plurality of pre-stored two-dimensional code type information according to the priority of the two-dimensional code type information; wherein, the priority is positively correlated with the occurrence times of the two-dimensional code type information; and reading the type information of the target two-dimensional code.
Optionally, the apparatus may further include:
the second identification module is used for identifying the two-dimensional code to be identified by traversing the two-dimensional code type under the condition that the first identification module does not identify and obtain the decoding result of the two-dimensional code to be identified;
And the storage module is used for storing the two-dimensional code type information corresponding to the identification mode which is successfully identified after the decoding result of the two-dimensional code to be identified is obtained by identification.
Optionally, the two-dimensional code type information includes: type and version number of two-dimension code; alternatively, the two-dimensional code type information includes: type, version number and format information of the two-dimensional code.
Optionally, the acquiring module may specifically be configured to: acquiring a two-dimensional code of a transmitted object in a conveyor belt, and taking the two-dimensional code as a two-dimensional code to be identified;
the reading module may be specifically configured to: reading a part of two-dimensional code type information in a pre-stored cache queue; the buffer queue comprises two-dimensional code type information of the article positioned before the article is conveyed in the conveyor belt;
the apparatus further comprises: the third identification module is used for reading a piece of two-dimensional code type information again in a pre-stored cache queue under the condition that the first identification module does not identify the decoding result of the two-dimensional code to be identified, and identifying the two-dimensional code to be identified by utilizing an identification mode corresponding to the two-dimensional code type information read again; the cache queue comprises a plurality of two-dimensional code type information.
In order to achieve the above object, an embodiment of the present invention further provides an electronic device, including a processor, a communication interface, a memory, and a communication bus, where the processor, the communication interface, and the memory complete communication with each other through the communication bus;
a memory for storing a computer program;
and the processor is used for realizing any two-dimensional code identification method when executing the program stored in the memory.
In order to achieve the above object, an embodiment of the present invention further provides a two-dimensional code identification system, including: conveyor belt, image acquisition device and processing device, wherein,
the conveying belt is used for conveying articles, and two-dimensional codes are arranged on the surfaces of the articles;
the image acquisition equipment is used for acquiring the image of the article to obtain an image to be identified, and sending the image to be identified to the processing equipment;
the processing equipment is used for receiving the image to be identified and obtaining a two-dimensional code to be identified in the image to be identified; reading pre-stored two-dimensional code type information; the pre-stored two-dimensional code type information comprises two-dimensional code type information of the article transmitted by the conveyor belt; and identifying the two-dimensional code to be identified by utilizing an identification mode corresponding to the read two-dimensional code type information.
Optionally, the system further comprises a triggering device, wherein the triggering device comprises a signal transmitting device and a signal receiving device, the signal transmitting device and the signal receiving device are respectively arranged at two sides of the conveyor belt, and a connecting line of the signal transmitting device and the signal receiving device is intersected with the conveying direction of the conveyor belt;
the triggering equipment is used for sending an acquisition instruction to the image acquisition equipment when detecting that the signals transmitted between the triggering equipment are blocked by the articles on the conveyor belt;
the image acquisition equipment is specifically used for acquiring the image of the object after receiving the acquisition instruction to obtain an image to be identified, and sending the image to be identified to the processing equipment.
By applying the embodiment of the invention, the type information of the two-dimensional code with more occurrence times is stored in advance, when the two-dimensional code to be identified exists, the type information of the two-dimensional code stored in advance is read, and the two-dimensional code to be identified is identified by utilizing the identification mode corresponding to the read type information of the two-dimensional code; compared with the identification mode of traversing the two-dimensional code types, the identification efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1a is a block diagram of a design provided by an embodiment of the present invention;
FIG. 1b is a block diagram of another embodiment of the present invention;
FIG. 1c is a schematic diagram of a module processing flow according to an embodiment of the present invention;
FIG. 1d is a schematic diagram of another module processing flow according to an embodiment of the present invention;
fig. 2a is a schematic diagram of a first flow of a two-dimensional code identification method according to an embodiment of the present invention;
FIG. 2b is a schematic diagram of the structure of a DM code;
FIG. 2c is a schematic diagram of the structure of a QR code;
FIG. 2d is a schematic diagram of a matrix code;
fig. 3a is a schematic diagram of a second flow of the two-dimensional code identification method according to the embodiment of the present invention;
fig. 3b is a schematic diagram of an application scenario provided in an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a two-dimensional code recognition device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a two-dimensional code recognition system according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terms of the present invention are explained as follows:
two-dimensional code: a specific geometric figure is used for distributing black and white alternate figures on a plane according to a certain rule;
two-dimensional code identification/decoding: converting the two-dimensional code image into a character string according to a fixed rule;
two-dimensional code detection: defining and content analysis of a two-dimensional code area in an image;
two-dimensional code positioning block mass: and positioning a generated two-dimensional code target binary area by the two-dimensional code.
The inventive concept of the present invention is as follows:
firstly, acquiring a two-dimensional code image of a transmitted object in a conveyor belt, referring to fig. 1a, inputting the two-dimensional code image into a two-dimensional code detection module for detection, outputting a two-dimensional code positioning block, and taking the block as a two-dimensional code to be identified.
The specific detection process may include: extracting image features of the two-dimensional code image, separating the two-dimensional code from the background by carrying out statistical analysis on the image features, and further outputting a two-dimensional code positioning block. For example, a machine learning method may be adopted to extract features of the two-dimensional code image, such as HOG (Histogram of Oriented Gradient) features, haar features, or LBP (Local Binary Patterns, local binary pattern) features, etc., and through these features, a binary image of the image is obtained, and then through connected region detection, a two-dimensional code positioning block is output.
As shown in fig. 1a, the two-dimensional code positioning block mass is input into a speed-up decoding module for decoding. Specifically, referring to fig. 1b, the turbo decoding module may include a decoding submodule, an updating submodule, and a buffering submodule.
The cache submodule comprises a prestored cache queue. For example, before identifying the two-dimensional code on the article conveyed by the conveyor belt, the type information of the two-dimensional code attached to the article on the conveyor belt before the article is conveyed may be stored in the buffer queue in advance. The two-dimensional code type information pasted on the conveyed article on the conveyor belt is mostly similar, and the article where the two-dimensional code to be identified is located can be considered to be the same as the two-dimensional code type information of the article conveyed before the article.
For example, the two-dimensional code type information may include: type, version number and format information of the two-dimensional code. There are various types of two-dimensional codes, such as DM (Data Matrix) codes, or QR (Quick Response) codes, matrix codes, and the like.
If the cache queue comprises a plurality of pieces of two-dimension code type information, the priority of the plurality of pieces of two-dimension code type information can be set according to the occurrence times of the plurality of pieces of two-dimension code type information, and the priority is positively correlated with the occurrence times of the two-dimension code type information as the occurrence times are more. Here, a piece of two-dimensional code type information with the highest priority can be read.
In this case, the processing flow of the speed-up decoding module may be as shown in fig. 1 c:
the decoding submodule can read a piece of two-dimensional code type information from a cache queue pre-stored by the cache submodule. If not, directly triggering the traversal decoding module; if the two-dimensional code is read, the decoding submodule utilizes the identification mode corresponding to the read two-dimensional code type information to identify the two-dimensional code to be identified, namely, the two-dimensional code positioning block mass is decoded.
If the identification is successful, a decoding result of the two-dimensional code positioning block mass is obtained, and the decoding result can be output to a screen display; in addition, the update sub-module updates the type information of the two-dimensional code positioning block mass (two-dimensional code to be identified) in the cache queue, for example, the occurrence number of the type information can be +1. If the identification is unsuccessful, the decoding submodule re-reads another piece of two-dimension code type information from the cache queue, and the two-dimension code type information with the highest priority can be read. And identifying the two-dimensional code to be identified by utilizing an identification mode corresponding to the re-read two-dimensional code type information.
If the identification is unsuccessful until the decoding submodule reads the two-dimensional code type information from the cache queue for the nth time (N is a positive integer greater than 1), and the identification mode corresponding to the two-dimensional code type information read for the nth time is utilized to identify the two-dimensional code to be identified successfully, in this case, the updating submodule updates the type information of the two-dimensional code positioning block mass in the cache queue, for example, the updating submodule can increase the occurrence frequency +1 of the two-dimensional code type information read for the nth time and advance the priority of the type information in the cache queue.
If the cache queue is traversed, the two-dimensional code to be identified cannot be successfully identified, and in this case, the two-dimensional code positioning block mass can be input into the traversal decoding module for decoding. Specifically, in the traversal decoding module, the two-dimensional code to be identified can be identified by using a mode of traversing the two-dimensional code type information, and the two-dimensional code type information corresponding to the other successful identification mode is stored in a cache queue.
Assuming that the two-dimensional code type information includes two-dimensional code type, version number and format information, the processing flow of the speed-up decoding module may be as shown in fig. 1 d: the two-dimensional code positioning block mass is input into a traversing decoding module, the type, version number and format information of the two-dimensional code are traversed, character strings (decoding results) are output if decoding is successful (identification is successful), and prompt information of decoding failure is output if decoding is failed (identification is not successful).
In the scheme, when the two-dimensional code of the article transmitted on the conveyor belt is identified, the type information of the two-dimensional code of the article transmitted on the conveyor belt is stored in advance; when the two-dimensional code of the article is identified, the pre-stored two-dimensional code type information is read, and the two-dimensional code to be identified is identified by utilizing an identification mode corresponding to the read two-dimensional code type information; compared with the identification mode of traversing the two-dimensional code types, the identification efficiency is improved.
Based on the same inventive concept, the embodiments of the present invention provide a two-dimensional code identification method, apparatus, device and system, where the method and apparatus can be applied to various electronic devices, such as mobile phones, computers, terminal processors, and the like, and are not limited in particular.
Fig. 2a is a schematic flow chart of a first two-dimensional code identification method according to an embodiment of the present invention, including:
s201: and obtaining the two-dimensional code to be identified.
As an embodiment, S201 may include: acquiring an image to be identified; based on the image characteristics of the image to be identified, identifying a two-dimensional code area in the image to be identified; and carrying out background separation on the two-dimensional code area to obtain the two-dimensional code to be identified.
For example, the embodiment of the invention can identify the two-dimensional code on the article conveyed by the conveying belt, and one or more two-dimensional code labels can be adhered to the article conveyed. For example, the conveying article may be a packaged box body, and the box body includes a plurality of articles, and in this case, a plurality of two-dimensional code labels, that is, two-dimensional code labels of the plurality of articles, may be attached to the surface of the box body. For another example, the conveying article may be a commodity, and in this case, a two-dimensional code label is adhered to the surface of the commodity.
And carrying out image acquisition on the conveyed article by using image acquisition equipment to obtain an image to be identified, wherein the image to be identified can contain one or more two-dimensional code areas, namely areas corresponding to the one or more two-dimensional code labels in the image. It can be understood that the two-dimensional code area contains grids with black and white intervals, and the two-dimensional code area in the image can be identified based on the image characteristics. For example, the two-dimensional code region in the image can be identified based on HOG (Histogram of Oriented Gradient, directional gradient histogram) features, haar features, LBP (Local Binary Patterns, local binary pattern) features, or the like of the image. Alternatively, a two-dimensional code model may be established in advance using a machine learning algorithm, and a two-dimensional code region in the image may be identified using the two-dimensional code model.
The identified two-dimensional code area generally further comprises background content, and the background content can be separated by utilizing a binary image segmentation algorithm to obtain the two-dimensional code to be identified.
S202: and reading the pre-stored two-dimensional code type information.
In this embodiment, the type information of the two-dimensional code having a large number of occurrences may be stored in advance. For example, one or more pieces of two-dimensional code type information may be stored in advance, and if a plurality of pieces of two-dimensional code type information are stored, the priority of the plurality of pieces of two-dimensional code type information may be set according to the number of occurrences of the plurality of pieces of two-dimensional code type information: the more the number of occurrences, the higher the priority corresponding to the type information of the two-dimensional code.
In this case, S202 may include: selecting one target two-dimensional code type information from a plurality of pre-stored two-dimensional code type information according to the priority of the two-dimensional code type information; wherein, the priority is positively correlated with the occurrence times of the two-dimensional code type information; and reading the type information of the target two-dimensional code.
S203: and identifying the two-dimensional code to be identified by utilizing an identification mode corresponding to the read two-dimensional code type information.
For example, before the two-dimensional code on the article is identified by the conveyor belt, the type information of the two-dimensional code attached to the article on the conveyor belt before the article is conveyed may be stored in advance. The two-dimensional code type information pasted on the conveyed article on the conveyor belt is mostly similar, and the article where the two-dimensional code to be identified is located can be considered to be the same as the two-dimensional code type information of the article conveyed before the article, so that the two-dimensional code to be identified can be identified by utilizing an identification mode corresponding to the pre-stored two-dimensional code type information.
For example, the two-dimensional code type information includes: type and version number of two-dimension code; alternatively, the two-dimensional code type information includes: type, version number and format information of the two-dimensional code. There are various types of two-dimensional codes, such as DM (Data Matrix) codes, or QR (Quick Response) codes, matrix codes, and the like.
The DM code may include a data area and a location detection pattern including two virtual sides and two real sides, as shown in fig. 2b, and the number of black dots in the virtual sides may represent the version number of the DM code. The two-dimensional code is represented by the position detection graph of the two virtual edges and the two real edges.
The QR code may include a dead zone, a position detection pattern, a reference grid, format information, and data information, and the number of black dots in the reference grid may represent the version number of the QR code, as shown in fig. 2 c. The representation of the position detection graph in the shape of the 'back' word indicates that the two-dimensional code is a QR code. In addition, the correction patterns are included in version 2 and version 7. QR codes contain a large number of versions, with the structure of the different versions being slightly different.
The matrix code may include a position detection pattern, a direction correction pattern, a data area, a reserved block, and a dead zone, as shown in fig. 2d, where the minimum unit of the matrix code is a hexagon. Wherein the spiral-shaped position detection pattern indicates that the two-dimensional code is a matrix code.
Different identification modes aiming at two-dimensional codes with different types, different version numbers and different formats are different. For example, the identification manner for the DM code may be: the method comprises the steps of determining a version number of a DM code through a virtual edge of the DM code, establishing a sampling grid matrix according to the determined version number, sampling by utilizing the sampling grid matrix, and finally decoding a sampling result by utilizing a decoding rule of DM to obtain a recognition result of the DM code.
For another example, the identification manner for the QR code may be: firstly, determining the size of black points through a loop-shaped mark (a position detection pattern of a loop-shaped shape), determining the number of the black points in a reference grid by combining the size of the black points, determining the version number of a QR code according to the number of the black points, positioning a correction pattern, correcting the image through the loop-shaped mark and the correction pattern, then establishing a sampling grid and sampling, and finally decoding a sampling result by utilizing a decoding rule of the QR to obtain a recognition result of the QR code.
As an implementation manner, if the decoding result of the two-dimensional code to be identified is not identified after S203 is executed, identifying the two-dimensional code to be identified by traversing the type of the two-dimensional code; and after the identification is carried out to obtain the decoding result of the two-dimensional code to be identified, storing the two-dimensional code type information corresponding to the identification mode which is successfully identified.
For example, if the conveyor belt conveys the articles of different merchants, the type information of the two-dimension code pasted on the articles of the same merchant is the same, and the type information of the two-dimension code pasted on the articles of different merchants is different; assuming that the two-dimensional code to be identified acquired in the previous ten times is the two-dimensional code of 10 commodities of a merchant A, and the two-dimensional code to be identified acquired in the tenth to thirty-th times is the two-dimensional code of 20 commodities of a merchant B; assuming that the two-dimensional code type information of 10 commodities of a merchant A is a DM code, and the two-dimensional code type information of 20 commodities of a merchant B is a QR code; it is assumed that DM codes are included in the two-dimensional code type information stored in advance, and QR codes are not included.
When the embodiment shown in fig. 2a is executed for the first to tenth times, the two-dimensional code of the commodity of the merchant a is identified by using the identification mode corresponding to the DM code, so that the decoding result of the two-dimensional code can be obtained by identification. When the embodiment shown in fig. 2a is executed for the eleventh time, the two-dimensional code of the commodity of the merchant B is identified by using the identification mode corresponding to the DM code, and the decoding result of the two-dimensional code cannot be obtained. In this case, the two-dimensional code to be identified is identified by traversing the two-dimensional code type; after the decoding result of the two-dimensional code to be identified is obtained, storing the two-dimensional code type information corresponding to the identification mode of successful identification, namely storing the QR code as the two-dimensional code type information. In this way, when the embodiment shown in fig. 2a is executed from the twelfth time to the thirty time, the two-dimensional code type information that can be read includes the QR code, and the two-dimensional code of the commodity of the merchant B is identified by using the identification manner corresponding to the QR code, so that the decoding result of the two-dimensional code can be obtained by identification.
As an embodiment, after the decoding result is obtained, the decoding result of the two-dimensional code to be identified may be output. In addition, in addition to the decoding result, one or more of the following information may be output: the position information of the two-dimensional code to be identified in the image to be identified and the number of the two-dimensional codes contained in the image to be identified.
For example, after the two-dimensional code area is identified in the image to be identified, the position information such as the coordinates of the center point of the two-dimensional code area, the rotation angle of the two-dimensional code area, etc. may be determined, the number of the two-dimensional code areas may be counted, and the position information and the number may be output. Alternatively, after the decoding result is obtained, the position information and the number may be output together with the decoding result.
By applying the embodiment shown in the figure 2a, the type information of the two-dimensional code with more occurrence times is stored in advance, when the two-dimensional code to be identified exists, the type information of the two-dimensional code stored in advance is read, and the two-dimensional code to be identified is identified by utilizing an identification mode corresponding to the read type information of the two-dimensional code; compared with the identification mode of traversing the two-dimensional code types, the identification efficiency is improved.
Fig. 3a is a second flowchart of a two-dimensional code identification method according to an embodiment of the present invention, including:
s301: and acquiring the two-dimensional code of the article conveyed in the conveyor belt as the two-dimensional code to be identified.
As shown in fig. 3b, the rollers 1 and 2 drive the conveyor belt 5 to transport and drive towards the direction 8, the surface of the conveyor belt is loaded with conveyed articles 9, 10 and 11, the surface of each article is provided with a plurality of two-dimensional codes, the marks are respectively 12, 13 and 14, the two sides of the left side of the conveyor belt are respectively provided with photoelectric triggering devices 3 and 4, infrared rays 7 are emitted and received between the devices 3 and 4, if the conveyed articles obstruct the infrared rays 7, the camera 6 performs image acquisition and sends the acquired images to the terminal processor, and the terminal processor executes the embodiment to perform two-dimensional code detection and identification. The terminal processor can be used as a camera built-in module unit or a background server, and is connected with the screen display, and the decoding result of the two-dimensional code obtained through recognition is displayed through the screen display.
The terminal processor acquires an image acquired by the camera 6 as an image to be identified; based on the image characteristics of the image to be identified, identifying a two-dimensional code area in the image to be identified; and carrying out background separation on the two-dimensional code area to obtain the two-dimensional code to be identified.
For example, after the two-dimensional code area is identified in the image to be identified, the position information such as the coordinates of the center point of the two-dimensional code area, the rotation angle of the two-dimensional code area and the like can be determined, the number of the two-dimensional code areas can be counted, and the position information and the number are output to the screen display. Alternatively, after the decoding result is obtained, the position information and the number may be output to the screen together with the decoding result.
S302: and reading a part of two-dimension code type information in a pre-stored cache queue. The buffer queue comprises two-dimensional code type information of the article positioned in front of the article in the conveying belt.
For example, one or more pieces of two-dimensional code type information may be included in the cache queue, such as three pieces of two-dimensional code type information may be included. If the cache queue comprises a plurality of pieces of two-dimension code type information, the priority of the plurality of pieces of two-dimension code type information can be set according to the occurrence times of the plurality of pieces of two-dimension code type information, and the priority is positively correlated with the occurrence times of the two-dimension code type information as the occurrence times are more. In S302, a piece of two-dimensional code type information with the highest priority may be read.
S303: and identifying the two-dimensional code to be identified by utilizing an identification mode corresponding to the read two-dimensional code type information.
If the identification is successful, a decoding result is obtained, and the decoding result can be output to a screen display. If the identification is unsuccessful, S304 may be performed: judging whether unread two-dimensional code type information exists in the cache queue; if so, S305-S306 are performed.
S305: and reading a part of two-dimensional code type information again in a pre-stored cache queue.
S306: and identifying the two-dimensional code to be identified by utilizing an identification mode corresponding to the re-read two-dimensional code type information.
As described above, if the cache queue includes a plurality of pieces of two-dimensional code type information, the priority of the plurality of pieces of two-dimensional code type information may be set according to the number of occurrences of the plurality of pieces of two-dimensional code type information, the more the number of occurrences, the priority is positively correlated with the number of occurrences of the two-dimensional code type information. In S305, a piece of two-dimensional code type information may be read again according to the priority order.
If the two-dimensional code type information which is not read does not exist in the cache queue, S307-S308 are executed.
S307: and identifying the two-dimensional code to be identified by traversing the two-dimensional code type.
S308: after the decoding result of the two-dimensional code to be identified is obtained through identification, the two-dimensional code type information corresponding to the identification mode of successful identification is stored.
For example, the priority of the newly stored two-dimensional code type information may be adjusted to the highest, and if the recognition mode corresponding to the newly stored two-dimensional code type information is utilized, the decoding result of the next two-dimensional code cannot be recognized, and then the priority of the newly stored two-dimensional code type information is adjusted to be lower.
When the embodiment shown in the figure 3a is applied to the identification of the two-dimensional code of the article conveyed on the conveyor belt, the type information of the two-dimensional code of the article conveyed on the conveyor belt is stored in advance; when the two-dimensional code of the article is identified, the pre-stored two-dimensional code type information is read, and the two-dimensional code to be identified is identified by utilizing an identification mode corresponding to the read two-dimensional code type information; compared with the identification mode of traversing the two-dimensional code types, the identification efficiency is improved.
The embodiment of the invention also provides a two-dimensional code identification device, as shown in fig. 4, comprising:
an acquisition module 401, configured to acquire a two-dimensional code to be identified;
a reading module 402, configured to read two-dimensional code type information stored in advance;
The first recognition module 403 is configured to recognize the two-dimensional code to be recognized by using a recognition manner corresponding to the two-dimensional code type information.
As an embodiment, the obtaining module 401 may specifically be configured to:
acquiring an image to be identified; based on the image characteristics of the image to be identified, identifying a two-dimensional code area in the image to be identified; and carrying out background separation on the two-dimensional code area to obtain the two-dimensional code to be identified.
As an embodiment, the apparatus may further include:
an output module (not shown in the figure) for outputting the decoding result of the two-dimensional code to be identified;
or outputting the decoding result of the two-dimensional code to be identified and one or more of the following information: the position information of the two-dimensional code to be identified in the image to be identified and the number of the two-dimensional codes contained in the image to be identified.
As an embodiment, the reading module 402 may be specifically configured to:
selecting one target two-dimensional code type information from a plurality of pre-stored two-dimensional code type information according to the priority of the two-dimensional code type information; wherein, the priority is positively correlated with the occurrence times of the two-dimensional code type information; and reading the type information of the target two-dimensional code.
As an embodiment, the apparatus may further include: a second identification module and a memory module (not shown), wherein,
the second identification module is used for identifying the two-dimensional code to be identified by traversing the two-dimensional code type under the condition that the first identification module does not identify and obtain the decoding result of the two-dimensional code to be identified;
and the storage module is used for storing the two-dimensional code type information corresponding to the identification mode which is successfully identified after the decoding result of the two-dimensional code to be identified is obtained by identification.
As one embodiment, the two-dimensional code type information includes: type and version number of two-dimension code; alternatively, the two-dimensional code type information includes: type, version number and format information of the two-dimensional code.
As an embodiment, the obtaining module 401 may specifically be configured to: acquiring a two-dimensional code of a transmitted object in a conveyor belt, and taking the two-dimensional code as a two-dimensional code to be identified;
the reading module 402 is specifically configured to: reading a part of two-dimensional code type information in a pre-stored cache queue; the buffer queue comprises two-dimensional code type information of the article positioned before the article is conveyed in the conveyor belt;
The apparatus may further include: a third identifying module (not shown in the figure), configured to, when the decoding result of the two-dimensional code to be identified is not identified by the first identifying module, read a piece of two-dimensional code type information again in a pre-stored cache queue, and identify the two-dimensional code to be identified by using an identifying manner corresponding to the two-dimensional code type information read again; the cache queue comprises a plurality of two-dimensional code type information.
By applying the embodiment shown in fig. 4 of the invention, the type information of the two-dimensional code with more occurrence times is stored in advance, when the two-dimensional code to be identified exists, the type information of the two-dimensional code stored in advance is read, and the two-dimensional code to be identified is identified by utilizing the identification mode corresponding to the read type information of the two-dimensional code; compared with the identification mode of traversing the two-dimensional code types, the identification efficiency is improved.
In the embodiment shown in fig. 4, the acquiring module 401 may be understood as the two-dimensional code detecting module in fig. 1a, the reading module 402 may be the speed-up decoding module in fig. 1a, and the first identifying module 403 and the third identifying module may also be the speed-up decoding module in fig. 1 a. The second recognition module may be the traversal decoding module of fig. 1 a. The memory module may be the cache sub-module of fig. 1 b.
The embodiment of the present invention further provides an electronic device, as shown in fig. 5, including a processor 501, a communication interface 502, a memory 503, and a communication bus 504, where the processor 501, the communication interface 502, and the memory 503 perform communication with each other through the communication bus 504,
a memory 503 for storing a computer program;
the processor 501 is configured to implement any one of the two-dimensional code identification methods described above when executing the program stored in the memory 503.
The communication bus mentioned above for the electronic devices may be a peripheral component interconnect standard (Peripheral Component Interconnect, PCI) bus or an extended industry standard architecture (Extended Industry Standard Architecture, EISA) bus, etc. The communication bus may be classified as an address bus, a data bus, a control bus, or the like. For ease of illustration, the figures are shown with only one bold line, but not with only one bus or one type of bus.
The communication interface is used for communication between the electronic device and other devices.
The Memory may include random access Memory (Random Access Memory, RAM) or may include Non-Volatile Memory (NVM), such as at least one disk Memory. Optionally, the memory may also be at least one memory device located remotely from the aforementioned processor.
The processor may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU), a network processor (Network Processor, NP), etc.; but also digital signal processors (Digital Signal Processing, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.
The embodiment of the invention also provides a computer readable storage medium, wherein a computer program is stored in the computer readable storage medium, and the computer program realizes any two-dimensional code identification method when being executed by a processor.
The embodiment of the invention also provides a two-dimensional code identification system, as shown in fig. 6, comprising: conveyor belt, image acquisition device and processing device, wherein,
the conveying belt is used for conveying articles, and two-dimensional codes are arranged on the surfaces of the articles;
the image acquisition equipment is used for acquiring the image of the article to obtain an image to be identified, and sending the image to be identified to the processing equipment;
the processing equipment is used for receiving the image to be identified and obtaining a two-dimensional code to be identified in the image to be identified; reading pre-stored two-dimensional code type information; the pre-stored two-dimensional code type information comprises two-dimensional code type information of the article transmitted by the conveyor belt; and identifying the two-dimensional code to be identified by utilizing an identification mode corresponding to the read two-dimensional code type information.
As an embodiment, the system may further include a triggering device, where the triggering device includes a signal transmitting device and a signal receiving device, the signal transmitting device and the signal receiving device are respectively disposed on two sides of the conveyor belt, and a connection line of the signal transmitting device and the signal receiving device intersects with a conveying direction of the conveyor belt;
the triggering equipment is used for sending an acquisition instruction to the image acquisition equipment when detecting that the signals transmitted between the triggering equipment are blocked by the articles on the conveyor belt;
the image acquisition equipment is specifically used for acquiring the image of the object after receiving the acquisition instruction to obtain an image to be identified, and sending the image to be identified to the processing equipment.
For example, as shown in fig. 3b, the triggering device may be a photoelectric triggering device 3, 4, the infrared radiation 7 being emitted and received between the devices 3, 4, and the camera 6 being triggered for image acquisition if the infrared radiation 7 is blocked by the conveyed article.
As an implementation mode, the system can further comprise a screen display used for displaying information such as decoding results of the two-dimensional codes.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In this specification, each embodiment is described in a related manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for the two-dimensional code recognition apparatus embodiment shown in fig. 4, the electronic device embodiment shown in fig. 5, the above-mentioned computer-readable storage medium embodiment, and the two-dimensional code recognition system embodiment shown in fig. 6, since they are substantially similar to the two-dimensional code recognition method embodiments shown in fig. 1a to 2d, the description is relatively simple, and the relevant points are referred to the partial description of the two-dimensional code recognition method embodiments shown in fig. 1a to 2 d.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.
Claims (13)
1. The two-dimensional code identification method is characterized by comprising the following steps of:
acquiring a two-dimensional code to be identified;
reading pre-stored two-dimensional code type information; wherein, the reading of the pre-stored two-dimensional code type information comprises: selecting one target two-dimensional code type information from a plurality of pre-stored two-dimensional code type information according to the priority of the two-dimensional code type information; wherein, the priority is positively correlated with the occurrence times of the two-dimensional code type information; reading the type information of the target two-dimensional code;
Identifying the two-dimensional code to be identified by utilizing an identification mode corresponding to the two-dimensional code type information;
if the decoding result of the two-dimensional code to be identified is not obtained, identifying the two-dimensional code to be identified in a mode of traversing the type of the two-dimensional code; the sequence of traversing the two-dimensional code types is positively correlated with the priorities of the two-dimensional code type information;
and after the identification is carried out to obtain the decoding result of the two-dimensional code to be identified, storing the two-dimensional code type information corresponding to the identification mode which is successfully identified.
2. The method of claim 1, wherein the obtaining the two-dimensional code to be identified comprises:
acquiring an image to be identified;
based on the image characteristics of the image to be identified, identifying a two-dimensional code area in the image to be identified;
and carrying out background separation on the two-dimensional code area to obtain the two-dimensional code to be identified.
3. The method according to claim 2, further comprising, after the identifying the two-dimensional code to be identified by the identifying method corresponding to the two-dimensional code type information:
outputting a decoding result of the two-dimensional code to be identified;
or outputting the decoding result of the two-dimensional code to be identified and one or more of the following information: the position information of the two-dimensional code to be identified in the image to be identified and the number of the two-dimensional codes contained in the image to be identified.
4. The method of claim 1, wherein the two-dimensional code type information comprises: type and version number of two-dimension code; alternatively, the two-dimensional code type information includes: type, version number and format information of the two-dimensional code.
5. The method of claim 1, wherein the obtaining the two-dimensional code to be identified comprises: acquiring a two-dimensional code of a transmitted object in a conveyor belt, and taking the two-dimensional code as a two-dimensional code to be identified;
the reading of the pre-stored two-dimensional code type information comprises the following steps:
reading a part of two-dimensional code type information in a pre-stored cache queue; the buffer queue comprises two-dimensional code type information of the article positioned before the article is conveyed in the conveyor belt;
after the identifying mode corresponding to the two-dimension code type information is utilized to identify the two-dimension code to be identified, the method further comprises the following steps:
if the decoding result of the two-dimensional code to be identified is not obtained, reading a piece of two-dimensional code type information again in a pre-stored cache queue, and identifying the two-dimensional code to be identified by utilizing an identification mode corresponding to the read two-dimensional code type information again; the cache queue comprises a plurality of two-dimensional code type information.
6. A two-dimensional code recognition device, characterized by comprising:
the acquisition module is used for acquiring the two-dimensional code to be identified;
the reading module is used for reading the pre-stored two-dimensional code type information; the reading module is specifically configured to: selecting one target two-dimensional code type information from a plurality of pre-stored two-dimensional code type information according to the priority of the two-dimensional code type information; wherein, the priority is positively correlated with the occurrence times of the two-dimensional code type information; reading the type information of the target two-dimensional code;
the first identification module is used for identifying the two-dimensional code to be identified by utilizing an identification mode corresponding to the two-dimensional code type information;
the second identification module is used for identifying the two-dimensional code to be identified by traversing the two-dimensional code type under the condition that the first identification module does not identify and obtain the decoding result of the two-dimensional code to be identified; the sequence of traversing the two-dimensional code types is positively correlated with the priorities of the two-dimensional code type information;
and the storage module is used for storing the two-dimensional code type information corresponding to the identification mode which is successfully identified after the decoding result of the two-dimensional code to be identified is obtained by identification.
7. The apparatus of claim 6, wherein the obtaining module is specifically configured to:
acquiring an image to be identified; based on the image characteristics of the image to be identified, identifying a two-dimensional code area in the image to be identified; and carrying out background separation on the two-dimensional code area to obtain the two-dimensional code to be identified.
8. The apparatus of claim 7, wherein the apparatus further comprises:
the output module is used for outputting the decoding result of the two-dimensional code to be identified;
or outputting the decoding result of the two-dimensional code to be identified and one or more of the following information: the position information of the two-dimensional code to be identified in the image to be identified and the number of the two-dimensional codes contained in the image to be identified.
9. The apparatus of claim 6, wherein the two-dimensional code type information comprises: type and version number of two-dimension code; alternatively, the two-dimensional code type information includes: type, version number and format information of the two-dimensional code.
10. The apparatus of claim 6, wherein the obtaining module is specifically configured to: acquiring a two-dimensional code of a transmitted object in a conveyor belt, and taking the two-dimensional code as a two-dimensional code to be identified;
The reading module is specifically configured to: reading a part of two-dimensional code type information in a pre-stored cache queue; the buffer queue comprises two-dimensional code type information of the article positioned before the article is conveyed in the conveyor belt;
the apparatus further comprises: the third identification module is used for reading a piece of two-dimensional code type information again in a pre-stored cache queue under the condition that the first identification module does not identify the decoding result of the two-dimensional code to be identified, and identifying the two-dimensional code to be identified by utilizing an identification mode corresponding to the two-dimensional code type information read again; the cache queue comprises a plurality of two-dimensional code type information.
11. The electronic equipment is characterized by comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus;
a memory for storing a computer program;
a processor for carrying out the method steps of any one of claims 1-5 when executing a program stored on a memory.
12. A two-dimensional code recognition system, comprising: conveyor belt, image acquisition device and processing device, wherein,
The conveying belt is used for conveying articles, and two-dimensional codes are arranged on the surfaces of the articles;
the image acquisition equipment is used for acquiring the image of the article to obtain an image to be identified, and sending the image to be identified to the processing equipment;
the processing equipment is used for receiving the image to be identified and obtaining a two-dimensional code to be identified in the image to be identified; reading pre-stored two-dimensional code type information; the pre-stored two-dimensional code type information comprises two-dimensional code type information of the article transmitted by the conveyor belt; the reading of the pre-stored two-dimensional code type information comprises the following steps: selecting one target two-dimensional code type information from a plurality of pre-stored two-dimensional code type information according to the priority of the two-dimensional code type information; wherein, the priority is positively correlated with the occurrence times of the two-dimensional code type information; reading the type information of the target two-dimensional code; identifying the two-dimensional code to be identified by utilizing an identification mode corresponding to the read two-dimensional code type information; if the decoding result of the two-dimensional code to be identified is not obtained, identifying the two-dimensional code to be identified in a mode of traversing the type of the two-dimensional code; and after the identification is carried out to obtain the decoding result of the two-dimensional code to be identified, storing the two-dimensional code type information corresponding to the identification mode which is successfully identified.
13. The system of claim 12, further comprising a triggering device, the triggering device comprising a signal transmitting device and a signal receiving device, the signal transmitting device and the signal receiving device being disposed on two sides of the conveyor belt, a line of the signal transmitting device and the signal receiving device intersecting a direction of conveyance of the conveyor belt;
the triggering equipment is used for sending an acquisition instruction to the image acquisition equipment when detecting that the signals transmitted between the triggering equipment are blocked by the articles on the conveyor belt;
the image acquisition equipment is specifically used for acquiring the image of the object after receiving the acquisition instruction to obtain an image to be identified, and sending the image to be identified to the processing equipment.
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| CN111476053B (en) * | 2020-04-03 | 2022-03-01 | 支付宝(杭州)信息技术有限公司 | Identification method and device |
| CN112131901A (en) * | 2020-09-22 | 2020-12-25 | 上海茂声智能科技有限公司 | Method and device for automatically mixing and identifying face and two-dimensional code and intelligent identification equipment |
| CN113850100B (en) * | 2021-09-24 | 2023-08-11 | 杭州海康威视数字技术股份有限公司 | Method for correcting two-dimensional code and electronic equipment |
| CN114162464B (en) * | 2021-11-19 | 2023-08-22 | 长沙易爱智能科技有限公司 | Intelligent code and connector thereof |
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