CN111325299B - Two-dimensional code image generation method and device, computer equipment and storage medium - Google Patents
Two-dimensional code image generation method and device, computer equipment and storage medium Download PDFInfo
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- CN111325299B CN111325299B CN202010098342.7A CN202010098342A CN111325299B CN 111325299 B CN111325299 B CN 111325299B CN 202010098342 A CN202010098342 A CN 202010098342A CN 111325299 B CN111325299 B CN 111325299B
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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
- G06T11/00—2D [Two Dimensional] image generation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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Abstract
The embodiment of the invention relates to the technical field of two-dimension codes, and provides a two-dimension code image generation method, a device, computer equipment and a storage medium, wherein the method comprises the following steps: acquiring first light intensity data acquired by a light acquisition device; determining an error correction level according to the first light intensity data, the size of a preset image and the size of a two-dimensional code image to be displayed; and generating the two-dimensional code image to be displayed, which comprises the preset image, according to the preset image and the size and the error correction level of the two-dimensional code image to be displayed. According to the embodiment of the invention, the error correction level matched with the current use environment is automatically determined, and the corresponding two-dimensional code image is generated according to the determined error correction level, so that the capacity occupied by the generated two-dimensional code image in meeting the requirement of the current use environment for error correction information is minimum, and the utilization rate of the overall capacity of the data of the two-dimensional code is improved.
Description
Technical Field
The invention relates to the technical field of two-dimensional codes, in particular to a two-dimensional code image generation method, a device, computer equipment and a storage medium.
Background
With the development of mobile payment and graphic coding, the situation that two-dimension codes are used as data sources is more and more in both industry and families, and the capability of high-speed reading of data is greatly improved due to the birth of the two-dimension codes. The two-dimensional code is provided with the anti-damage capability, namely the error correction capability, and the whole recognition is not affected even if the picture part of the two-dimensional code is damaged or blurred, but the larger the error correction capability is, the larger the data volume required, and the larger the coding size is.
The data overall capacity of the two-dimensional code is limited and cannot exceed a designated byte, and a general user usually needs to add special logo pictures or characters when using the two-dimensional code, so that the problem of how to improve the utilization rate of the data overall capacity of the two-dimensional code is a problem to be solved urgently by the person skilled in the art.
Disclosure of Invention
The invention aims to provide a two-dimensional code image generation method, a device, computer equipment and a storage medium, which can automatically determine the error correction level matched with the current use environment, and then generate a corresponding two-dimensional code image according to the determined error correction level, so that the capacity occupied by error correction information of the generated two-dimensional code image is minimum when the current use environment is met, and the utilization rate of the data integral capacity of the two-dimensional code is improved.
In order to achieve the above object, the technical scheme adopted by the embodiment of the invention is as follows:
in a first aspect, an embodiment of the present invention provides a two-dimensional code image generating method, which is applied to a computer device, where the computer device includes a light collecting device, and the method includes:
acquiring first light intensity data acquired by the light acquisition device;
determining an error correction level according to the first light intensity data, the size of a preset image and the size of a two-dimensional code image to be displayed;
and generating the two-dimensional code image to be displayed, which comprises the preset image, according to the preset image and the size of the two-dimensional code image to be displayed and the error correction level.
In one embodiment, the step of determining the error correction level according to the first light intensity data, the preset image size and the size of the two-dimensional code image to be displayed includes:
determining a misjudgment rate according to the first light intensity data, the size of the preset image and the size of the two-dimensional code image to be displayed;
and determining the error correction level corresponding to the misjudgment rate according to a preset rule.
In one embodiment, the step of determining the misjudgment rate according to the first light intensity data, the size of the preset image and the size of the two-dimensional code image to be displayed includes:
Determining a first misjudgment coefficient according to the first light intensity data;
determining a second misjudgment coefficient according to the size of the preset image and the size of the two-dimensional code image to be displayed;
and determining the misjudgment rate according to the first misjudgment coefficient and the second misjudgment coefficient.
In one embodiment, the determining the relation of the erroneous judgment rate according to the first erroneous judgment coefficient and the second erroneous judgment coefficient includes a product of the first erroneous judgment coefficient and a first erroneous judgment weight and a product of the second erroneous judgment coefficient and a second erroneous judgment weight.
In one embodiment, the error correction level includes a first level, a second level, a third level, and a fourth level that are sequentially increased, and the step of determining, according to a preset rule, the error correction level corresponding to the misjudgment rate includes:
if the misjudgment rate is larger than a first preset value and smaller than a second preset value, determining the error correction level as a first level;
if the misjudgment rate is larger than or equal to the second preset value and smaller than a third preset value, determining that the error correction level is a second level;
if the misjudgment rate is larger than or equal to the third preset value and smaller than a fourth preset value, determining that the error correction level is a third level;
And if the misjudgment rate is larger than or equal to the fourth preset value and smaller than a fifth preset value, determining that the error correction level is a fourth level.
In one embodiment, the step of generating the two-dimensional code image to be displayed including the preset image according to the preset image, the size of the two-dimensional code image to be displayed and the error correction level includes:
generating an initial two-dimensional code image comprising a preset image according to the preset image, the size of the two-dimensional code image to be displayed and the error correction level;
acquiring second light intensity data acquired by the light acquisition device;
if the first light intensity data is consistent with the second light intensity data, determining the initial two-dimensional code image as the two-dimensional code image to be displayed;
and if the first light intensity data is inconsistent with the second light intensity data, the two-dimensional code image to be displayed is redetermined according to the second light intensity data.
In a second aspect, an embodiment of the present invention provides a two-dimensional code image generating apparatus, which is applied to a computer device, where the computer device includes a light collecting device, and the apparatus includes:
the acquisition module is used for acquiring the first light intensity data acquired by the light acquisition device;
The determining module is used for determining an error correction level according to the first light intensity data, the size of a preset image and the size of a two-dimensional code image to be displayed;
the generation module is used for generating the two-dimensional code image to be displayed, which comprises the preset image, according to the preset image, the size of the two-dimensional code image to be displayed and the error correction level.
In one embodiment, the determining module is configured to, when executing the step of determining the error correction level according to the first light intensity data, the preset image size, and the size of the two-dimensional code image to be displayed:
determining a misjudgment rate according to the first light intensity data, the size of the preset image and the size of the two-dimensional code image to be displayed;
and determining the error correction level corresponding to the misjudgment rate according to a preset rule.
In one embodiment, the determining module is configured to, when executing the step of determining the misjudgment rate according to the first light intensity data, the size of the preset image, and the size of the two-dimensional code image to be displayed:
determining a first misjudgment coefficient according to the first light intensity data;
determining a second misjudgment coefficient according to the size of the preset image and the size of the two-dimensional code image to be displayed;
and determining the misjudgment rate according to the first misjudgment coefficient and the second misjudgment coefficient.
In one embodiment, the determining module is configured to determine that the relation of the erroneous judgment rate according to the first erroneous judgment coefficient and the second erroneous judgment coefficient includes a product of the first erroneous judgment coefficient and a first erroneous judgment weight and a product of the second erroneous judgment coefficient and a second erroneous judgment weight by using the following formula.
In one embodiment, the error correction level includes a first level, a second level, a third level, and a fourth level that are sequentially increased, and the determining module is configured to, when executing the step of determining the error correction level corresponding to the misjudgment rate according to a preset rule:
if the misjudgment rate is larger than a first preset value and smaller than a second preset value, determining the error correction level as a first level;
if the misjudgment rate is larger than or equal to the second preset value and smaller than a third preset value, determining that the error correction level is a second level;
if the misjudgment rate is larger than or equal to the third preset value and smaller than a fourth preset value, determining that the error correction level is a third level;
and if the misjudgment rate is larger than or equal to the fourth preset value and smaller than a fifth preset value, determining that the error correction level is a fourth level.
In one embodiment, the generating module is configured to, when executing the step of generating the two-dimensional code image to be displayed including the preset image according to the preset image, the size of the two-dimensional code image to be displayed, and the error correction level:
Generating an initial two-dimensional code image comprising a preset image according to the preset image, the size of the two-dimensional code image to be displayed and the error correction level;
acquiring second light intensity data acquired by the light acquisition device;
if the first light intensity data is consistent with the second light intensity data, determining the initial two-dimensional code image as the two-dimensional code image to be displayed;
and if the first light intensity data is inconsistent with the second light intensity data, the two-dimensional code image to be displayed is redetermined according to the second light intensity data.
In a third aspect, an embodiment of the present invention provides a computer apparatus, including:
one or more processors;
a memory for storing one or more programs that, when executed by the one or more processors, cause the one or more processors to implement the two-dimensional code image generation method of any of the preceding embodiments.
In a fourth aspect, an embodiment provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the two-dimensional code image generating method according to any one of the foregoing embodiments.
Compared with the prior art, the embodiment of the invention provides a two-dimensional code image generation method, a device, computer equipment and a storage medium, wherein the error correction level is determined according to the first light intensity data acquired by a light acquisition device of the computer equipment, the size of a preset image and the size of a two-dimensional code image to be displayed, the two-dimensional code image to be displayed comprising the preset image is finally generated according to the preset image, the size of the two-dimensional code image to be displayed and the error correction level, and the generated two-dimensional code image to be displayed has the minimum capacity occupied by the error correction information under the condition of meeting the requirement of the current use environment, so that the utilization rate of the data integral capacity of the two-dimensional code is improved.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a computer device according to an embodiment of the present invention;
fig. 2 shows a flowchart of a two-dimensional code image generating method according to an embodiment of the present invention;
fig. 3 shows an example diagram of a preset image and a corresponding two-dimensional code image to be displayed provided by an embodiment of the present invention;
fig. 4 is a flowchart illustrating another two-dimensional code image generating method according to an embodiment of the present invention;
fig. 5 shows a schematic structural diagram of a two-dimensional code image generating device according to an embodiment of the present invention.
Icon: 10-a computer device; 11-memory; 12-peripheral interfaces; 13-a processor; 14-buses; 15-a light acquisition device; 16-a display device; 100-a two-dimensional code image generating device; 110-an acquisition module; 120-determining a module; 130-a generation module.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
In the prior art, when a two-dimensional code image is generated, an error correction level which can meet the use environment is usually determined in advance after the use environment of the two-dimensional code is evaluated according to a user, and then the two-dimensional code image is generated by adopting the error correction level when the two-dimensional code is generated. For example, the predetermined two-dimensional code usage environment requires an error correction level with a high error correction capability, and at this time, the data volume required by the error correction level is also large. In addition, when the use environment of the two-dimensional code becomes worse, the error correction capability of the required two-dimensional code needs to be improved, and a two-dimensional code image cannot be generated according to the improved error correction level by adopting a fixed error correction level, so that the recognition rate of the two-dimensional code is reduced.
Through the analysis, the embodiment of the invention discovers various problems existing in the process of generating the two-dimensional code image by adopting the fixed error correction level, and therefore, the embodiment of the invention provides the two-dimensional code image generation method with the automatically adjustable error correction level, which not only improves the utilization rate waste of the whole data capacity of the two-dimensional code, but also improves the identification rate of the two-dimensional code, and is described in detail below.
Referring to fig. 1, fig. 1 is a schematic diagram illustrating a computer device 10 according to an embodiment of the invention. The computer device 10 may be a mobile phone, a tablet computer, a notebook computer, a physical host, or a virtual machine that can perform the same function as a physical host, etc. The computer device 10 comprises a memory 11, a peripheral interface 12, a processor 13, a bus 14, a light collecting device 15 and a display device 16, wherein the memory 11, the peripheral interface 12 and the processor 13 are connected through the bus 14, the light collecting device 15 and the display device 16 are connected through the peripheral interface 12 and the bus 14, and the processor 13 is used for executing executable modules stored in the memory 11, such as computer programs.
The memory 11 may include a high-speed random access memory (RAM: random Access Memory), and may further include a non-volatile memory (non-volatile memory), such as at least one magnetic disk memory.
Bus 14 may be an ISA bus, a PCI bus, an EISA bus, or the like. Only one double arrow is shown in fig. 1, but not only one bus or one type of bus.
The memory 11 is used for storing a program, and the processor 13 executes the program after receiving an execution instruction to implement the two-dimensional code image generating method disclosed in the above embodiment of the present invention.
The processor 13 may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in the processor 13 or by instructions in the form of software. The processor 13 may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU for short), a network processor (Network Processor, NP for short), etc.; but may also be a Digital Signal Processor (DSP), application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components.
The light collecting device 15 may be a photosensor, and generally refers to a device capable of sensing light energy from ultraviolet light to infrared light sharply and converting the light energy into an electrical signal. The light collection device 15 may be an ambient light sensor, an infrared light sensor, an ultraviolet light sensor, or the like.
The display device 16 is a display means for displaying a certain electronic document on a screen through a specific transmission device and reflecting the electronic document to human eyes, and the display device 16 may be an LCD display, an LED display, or the like.
Based on the description of the computer device 10, the embodiment of the present invention first describes a two-dimensional code image generating method, please refer to fig. 2, fig. 2 shows a flowchart of the two-dimensional code image generating method provided by the embodiment of the present invention, the method is applied to the computer device 10, and includes the following steps:
step S101, first light intensity data acquired by a light acquisition device are acquired.
In this embodiment, the first light intensity data may be data between 0 and 255 or between 0 and 1024. When the two-dimensional code image needs to be generated, the computer device 10 first acquires the first light intensity data acquired by the light acquisition device 15.
Step S102, determining an error correction level according to the first light intensity data, the size of the preset image and the size of the two-dimensional code image to be displayed.
In this embodiment, the preset image may be a logo image or an image with text information of a feature to be added by a user, and fig. 3 shows an example diagram of the preset image and a corresponding two-dimensional code image to be displayed provided by the embodiment of the present invention.
In this embodiment, when the two-dimensional code image is generated each time, the current light intensity data (i.e., the first light intensity data) acquired by the light acquisition device 15 needs to be acquired, and under the condition that the size of the preset image and the size of the two-dimensional code image to be displayed are the same, the determined error correction level may be different, so that the error correction capability of the finally generated two-dimensional code image to be displayed is different, meanwhile, the capacity of other information data, except for the error correction information, contained in the two-dimensional code image to be displayed is also different, and further, the utilization rate of the overall capacity of the data of the two-dimensional code image to be displayed is also different.
It should be noted that, the user may not add the preset image according to his own needs, and the size of the preset image is 0 without the preset image.
Step S103, generating the two-dimensional code image to be displayed, which comprises the preset image, according to the preset image, the size of the two-dimensional code image to be displayed and the error correction level.
In this embodiment, the two-dimensional code image to be displayed may be displayed by the display device 16, and the display device 16 may adjust the backlight intensity according to the light intensity data collected by the light collecting device 15, so that the backlight intensity increases with the increase of the ambient light and decreases with the decrease of the ambient light.
According to the two-dimensional code image generation method provided by the embodiment of the invention, the error correction level matched with the current use environment is automatically determined, and the corresponding two-dimensional code image is generated according to the determined error correction level, so that the capacity occupied by the generated two-dimensional code image in meeting the requirement of the current use environment for error correction information is minimum, and the utilization rate of the overall capacity of the data of the two-dimensional code is improved.
In the embodiment of the invention, in order to determine the error correction level most suitable for the current environment, based on the two-dimensional code image generation method of fig. 2, the embodiment of the invention also provides another two-dimensional code image generation method. Referring to fig. 4, fig. 4 shows a flowchart of another two-dimensional code image generating method according to an embodiment of the present invention, and step S102 includes the following sub-steps:
step S1021, determining the misjudgment rate according to the first light intensity data, the size of the preset image and the size of the two-dimensional code image to be displayed.
In this embodiment, the error judgment rate is used to represent the probability of being misidentified, and the higher the error judgment rate, the easier the two-dimensional code image to be displayed is to be misidentified, the higher the required error correction level is, and the larger the capacity of the two-dimensional code image to be displayed occupied by the error correction information is, otherwise, the smaller the capacity is.
As a specific embodiment, the method for determining the false positive rate may be:
first, a first misjudgment coefficient is determined according to first light intensity data.
In this embodiment, the first misjudgment coefficient is used to represent the influence degree of the two-dimensional code image to be displayed by the first light intensity data, the value of the first light intensity data is [0, 255], the value of the first misjudgment coefficient is [1,0], the linear mapping relationship between the first light intensity data and the first misjudgment coefficient is formed, when the first light intensity is 0, the corresponding first misjudgment coefficient is 1, when the first light intensity is 255, the corresponding first misjudgment coefficient is 0, when the first light intensity is 128, the corresponding first misjudgment coefficient is 0.5, and so on.
Depending on the light collecting device 15, the value obtained directly from the light collecting device 15 may be between 0 and 255, and at this time, the value obtained from the light collecting device 15 is the first light intensity data, and the value obtained directly from the light collecting device 15 may be between 0 and 1024, and at this time, the value needs to be converted into data between 0 and 255, and the converted data is used as the first light intensity data. For example, if the value obtained from the light collecting device 15 is 1024, the converted data is 255, and at this time, the first light intensity data is 255.
It should be noted that other nonlinear mapping relationships, such as interval functions, quadratic functions, etc., may also be adopted according to actual situations. For example, with the interval function, when the first light intensity data is 0, the first erroneous judgment coefficient is set to 1, when the first light intensity data is (0, 100), the first erroneous judgment coefficient is set to 0.7, when the first light intensity data is [100, 200 ], the first erroneous judgment coefficient is set to 0.3, when the first light intensity data is [200, 255), the first erroneous judgment coefficient is set to 0.1, and when the first/light intensity data is 255, the first erroneous judgment coefficient is set to 0.
And secondly, determining a second misjudgment coefficient according to the size of the preset image and the size of the two-dimensional code image to be displayed.
In this embodiment, the second misjudgment coefficient is used to represent the influence degree of the size of the preset image and the size of the two-dimensional code image to be displayed on the two-dimensional code image to be displayed, and as a specific implementation manner, the second misjudgment coefficient=the size of the preset image/the size of the two-dimensional code image to be displayed. In actual use, the method can also be adjusted on the basis of the scene requirement, for example, a certain coefficient is increased or reduced for the size of the preset image, or a certain coefficient is increased or reduced for the size of the two-dimensional code image to be displayed, or a preset value is increased or reduced on the basis of the second misjudgment coefficient.
In this embodiment, when the size of the preset image is 0, that is, when the preset image does not exist, the second misjudgment coefficient=the size of the preset image/the size of the two-dimensional code image to be displayed, where the second misjudgment coefficient is 0. Of course, as an extension manner, when the size of the preset image is 0, the second misjudgment coefficient may be different from 0, that is, the second misjudgment coefficient may be determined only according to the size of the two-dimensional code image to be displayed.
And finally, determining the misjudgment rate according to the first misjudgment coefficient and the second misjudgment coefficient.
In this embodiment, the relationship for determining the erroneous judgment rate according to the first erroneous judgment coefficient and the second erroneous judgment coefficient includes the product of the first erroneous judgment coefficient and the first erroneous judgment weight and the product of the second erroneous judgment coefficient and the second erroneous judgment weight.
As a specific embodiment, the false positive rate may be determined by the following formula:
R＝K*W 1 +P*W 2 wherein R is the misjudgment rate, K is the first misjudgment coefficient, W 1 For the first erroneous judgment weight, P is the second erroneous judgment coefficient, W 2 And the second misjudgment weight.
In this embodiment, the first erroneous determination weight is used to represent the influence degree of the first erroneous determination coefficient on the erroneous determination rate, the second erroneous determination coefficient is used to represent the influence degree of the second erroneous determination coefficient on the erroneous determination rate, and the first erroneous determination weight and the second erroneous determination weight may be set by the user according to the needs, for example, the first erroneous determination weight and the second erroneous determination weight are both 0.5, or the first erroneous determination weight is 0.7, and the second erroneous determination weight is 0.3. When the second misjudgment coefficient takes a value of 0, the formula is evolved as follows:
R＝K*W 1 Wherein R is the misjudgment rate, K is the first misjudgment coefficient, W 1 The first erroneous judgment weight is the erroneous judgment rate at this time, and is related to the first erroneous judgment coefficient only.
Further, if the first erroneous judgment weight is 1, the erroneous judgment rate is the first erroneous judgment coefficient at this time, that is, the erroneous judgment rate is only related to the first erroneous judgment coefficient at this time or only related to the first light intensity data.
It should be noted that, based on the above disclosed method, one skilled in the art may increase environmental factors, such as colors, shadows, etc., that may affect the error correction level without inventive effort. Such extensions are also within the scope of the embodiments of the present invention.
Step S1022, determining the error correction level corresponding to the misjudgment rate according to the preset rule.
In this embodiment, a preset rule is used to characterize the mapping relationship between the erroneous judgment rate and the error correction level. Error correction class is divided into four stages: first level (also called L level), second level (also called M level), third level (also called Q level), fourth level (also called H level). The level of these four levels is: first level < second level < third level < fourth level, wherein the first level receives at most 7% of the damage, the second level can receive at most 15% of the damage, the third level can receive at most 25% of the damage, and the fourth level can receive at most 30% of the damage. The higher the error correction level, the stronger the error correction capability, the larger the data size of the error correction information in the generated two-dimensional code image to be displayed, the larger the final encoding size, and the smaller the capacity of the remaining information which can be stored under the condition that the size of the two-dimensional code image to be displayed is limited.
As a specific embodiment, the method for determining the error correction level may be:
first, if the misjudgment rate is larger than a first preset value and smaller than a second preset value, determining the error correction level as a first level;
secondly, if the misjudgment rate is larger than or equal to a second preset value and smaller than a third preset value, determining the error correction level as a second level;
thirdly, if the misjudgment rate is larger than or equal to a third preset value and smaller than a fourth preset value, determining the error correction level as a third level;
fourth, if the erroneous judgment rate is greater than or equal to the fourth preset value and less than the fifth preset value, determining that the error correction level is the fourth level.
In this embodiment, the first preset value, the second preset value, the third preset value, the fourth preset value and the fifth preset value may be set according to actual needs, for example, the first preset value is 0, the second preset value is 0.25, the third preset value is 0.5, the fourth preset value is 0.75 and the fifth preset value is 1.
In this embodiment, as another implementation manner, the preset rule may be a preset function, where an argument of the function is a misjudgment rate, a dependent variable is an error correction level, or a hash function with an error correction level being a hash value, or the like.
With continued reference to fig. 4, step S103 includes the following sub-steps:
In sub-step S1031, an initial two-dimensional code image including the preset image is generated according to the preset image, the size of the two-dimensional code image to be displayed, and the error correction level.
And S1032, acquiring second light intensity data acquired by the light acquisition device.
In the present embodiment, the second light intensity data is light intensity data acquired from the light acquisition device 15 after the initial two-dimensional code image is generated.
And step S1033, if the first light intensity data is consistent with the second light intensity data, determining the initial two-dimensional code image as the two-dimensional code image to be displayed.
In this embodiment, after the size of the preset image and the size of the two-dimensional code image to be displayed are determined, the first light intensity data is consistent with the second light intensity data, and the current environment is considered to be unchanged before and after the initial two-dimensional code image is generated, at this time, the initial two-dimensional code image can be displayed on the display device 16 as the two-dimensional code image to be displayed.
In sub-step S1034, if the first light intensity data is inconsistent with the second light intensity data, the two-dimensional code image to be displayed is redetermined according to the second light intensity data.
In this embodiment, if the first light intensity data is inconsistent with the second light intensity data, it is considered that the current environment changes before and after the initial two-dimensional code image is generated, at this time, the initial two-dimensional code image may not adapt to the current environment any more, the second light intensity data needs to be used as new first light intensity data, the sub-step S1031 is repeated, the new initial two-dimensional code image is generated again, the sub-step S1032 is repeated, the new second light intensity data is collected again, and the sub-steps S1033 to S1034 are repeated until the two-dimensional code image to be displayed is determined.
It should be noted that the substeps S1031 to S1034 may be used in combination with fig. 2, i.e., replace the step S103 in fig. 2.
According to the two-dimensional code image generation method provided by the embodiment of the invention, on one hand, the influence of the first light intensity data on the misjudgment rate (namely, the first misjudgment coefficient) and the influence of the size of the preset image and the size of the two-dimensional code image to be displayed on the misjudgment rate (namely, the second misjudgment coefficient) are respectively endowed with different weight values (namely, the first weight value and the second weight value), the influence of the first light intensity data on the misjudgment rate is integrated, the misjudgment rate is finally obtained, and as the first weight value and the second weight value can be adjusted according to the actual use situation, the mapping relation between the first misjudgment coefficient and the second misjudgment coefficient can be adjusted as required, so that the calculation of the misjudgment rate is more flexible, the calculated misjudgment rate is more reasonable, the error correction level obtained according to the calculation of the misjudgment rate is more reasonable, and the reduction of the capacity space of the two-dimensional code image to be displayed due to the fact that the error correction information occupies the unreasonable error level is effectively avoided. On the other hand, after the initial two-dimensional code image is generated, whether the environment before and after the initial two-dimensional code image is generated is judged, the initial two-dimensional code image is regenerated when the environment is changed, the finally generated two-dimensional code image to be displayed is known, the error correction level of the finally obtained two-dimensional code image to be displayed is most matched with the current environment, and the reduction of the utilization rate of the capacity space caused by the overlarge capacity of the two-dimensional code image to be displayed, which is occupied by error correction information caused by unreasonable error correction level, is further effectively avoided.
In order to execute the foregoing embodiments and the corresponding steps in each possible implementation manner, an implementation manner of the two-dimensional code image generating device is given below, please refer to fig. 5, and fig. 5 shows a schematic structural diagram of the two-dimensional code image generating device 100 provided by the embodiment of the present invention. It should be noted that, the basic principle and the technical effects of the two-dimensional code image generating apparatus 100 provided in this embodiment are the same as those of the foregoing embodiments, and for brevity, the description of this embodiment is not mentioned, and reference may be made to the corresponding content in the foregoing embodiments.
The two-dimensional code image generating apparatus 100 is applied to the computer device 10, and may be stored in the memory 11 shown in fig. 1 in the form of a program, and when the processor 13 receives an execution instruction, the processor executes the program corresponding to the apparatus in the memory 11 to implement the two-dimensional code image generating method disclosed in the embodiment of the present invention. The device comprises an acquisition module 110, a determination module 120 and a generation module 130.
The acquiring module 110 is configured to acquire the first light intensity data acquired by the light acquisition device.
The determining module 120 is configured to determine an error correction level according to the first light intensity data, the size of the preset image, and the size of the two-dimensional code image to be displayed.
The generating module 130 is configured to generate the two-dimensional code image to be displayed including the preset image according to the preset image, the size of the two-dimensional code image to be displayed, and the error correction level.
In an embodiment, the determining module 120 is further configured to determine the misjudgment rate according to the first light intensity data, the size of the preset image, and the size of the two-dimensional code image to be displayed; and determining the error correction level corresponding to the misjudgment rate according to a preset rule.
In one embodiment, the determining module 120 is further configured to determine a first misjudgment coefficient according to the first light intensity data; determining a second misjudgment coefficient according to the size of the preset image and the size of the two-dimensional code image to be displayed; and determining the misjudgment rate according to the first misjudgment coefficient and the second misjudgment coefficient.
In one embodiment, the determining module 120 is configured to determine the misjudgment rate according to the first misjudgment coefficient and the second misjudgment coefficient by using the following formula, where the relational expression includes a product of the first misjudgment coefficient and the first misjudgment weight and a product of the second misjudgment coefficient and the second misjudgment weight.
In one embodiment, the error correction level includes a first level, a second level, a third level, and a fourth level that are sequentially increased, and the determining module 120 is further configured to determine that the error correction level is the first level if the misjudgment rate is greater than a first preset value and less than a second preset value; if the misjudgment rate is larger than or equal to the second preset value and smaller than the third preset value, determining that the error correction level is the second level; if the misjudgment rate is larger than or equal to the third preset value and smaller than the fourth preset value, determining that the error correction level is the third level; if the misjudgment rate is larger than or equal to the fourth preset value and smaller than the fifth preset value, determining that the error correction level is the fourth level.
In one embodiment, the generating module 130 is further configured to generate an initial two-dimensional code image including the preset image according to the preset image, the size of the two-dimensional code image to be displayed, and the error correction level; acquiring second light intensity data acquired by the light acquisition device; if the first light intensity data is consistent with the second light intensity data, determining the initial two-dimensional code image as a two-dimensional code image to be displayed; if the first light intensity data is inconsistent with the second light intensity data, the two-dimensional code image to be displayed is redetermined according to the second light intensity data.
In one embodiment, a computer device is provided comprising a memory storing a computer program and a processor that when executing the computer program performs the steps of: acquiring first light intensity data acquired by a light acquisition device; determining an error correction level according to the first light intensity data, the size of a preset image and the size of a two-dimensional code image to be displayed; and generating the two-dimensional code image to be displayed, which comprises the preset image, according to the preset image and the size and the error correction level of the two-dimensional code image to be displayed.
In one embodiment, the processor when executing the computer program further performs the steps of: determining the misjudgment rate according to the first light intensity data, the size of a preset image and the size of a two-dimensional code image to be displayed; and determining the error correction level corresponding to the misjudgment rate according to a preset rule.
In one embodiment, the processor when executing the computer program further performs the steps of: determining a first misjudgment coefficient according to the first light intensity data; determining a second misjudgment coefficient according to the size of the preset image and the size of the two-dimensional code image to be displayed; and determining the misjudgment rate according to the first misjudgment coefficient and the second misjudgment coefficient.
In one embodiment, the processor when executing the computer program further performs the steps of: the relation for determining the false positive rate according to the first false positive coefficient and the second false positive coefficient comprises the product of the first false positive coefficient and the first false positive weight and the product of the second false positive coefficient and the second false positive weight.
In one embodiment, the error correction levels include sequentially increasing first, second, third and fourth levels, and the processor when executing the computer program further performs the steps of: if the misjudgment rate is larger than the first preset value and smaller than the second preset value, determining that the error correction level is a first level; if the misjudgment rate is larger than or equal to the second preset value and smaller than the third preset value, determining that the error correction level is the second level; if the misjudgment rate is larger than or equal to the third preset value and smaller than the fourth preset value, determining that the error correction level is the third level; if the misjudgment rate is larger than or equal to the fourth preset value and smaller than the fifth preset value, determining that the error correction level is the fourth level.
In one embodiment, the processor when executing the computer program further performs the steps of: generating an initial two-dimensional code image comprising a preset image according to the preset image, the size of the two-dimensional code image to be displayed and the error correction level; acquiring second light intensity data acquired by the light acquisition device; if the first light intensity data is consistent with the second light intensity data, determining the initial two-dimensional code image as a two-dimensional code image to be displayed; if the first light intensity data is inconsistent with the second light intensity data, the two-dimensional code image to be displayed is redetermined according to the second light intensity data.
According to the computer equipment 10 provided by the embodiment of the invention, when the processor of the computer equipment 10 executes the computer program, the error correction level matched with the current use environment is automatically determined, and the corresponding two-dimensional code image is generated according to the determined error correction level, so that the capacity occupied by the error correction information of the generated two-dimensional code image is minimum under the condition that the requirement of the current use environment is met, and the utilization rate of the overall data capacity of the two-dimensional code is improved.
In one embodiment, a computer readable storage medium is provided having a computer program stored thereon, which when executed by a processor, performs the steps of: acquiring first light intensity data acquired by a light acquisition device; determining an error correction level according to the first light intensity data, the size of a preset image and the size of a two-dimensional code image to be displayed; and generating the two-dimensional code image to be displayed, which comprises the preset image, according to the preset image and the size and the error correction level of the two-dimensional code image to be displayed.
In one embodiment, the computer program when executed by the processor further performs the steps of: determining the misjudgment rate according to the first light intensity data, the size of a preset image and the size of a two-dimensional code image to be displayed; and determining the error correction level corresponding to the misjudgment rate according to a preset rule.
In one embodiment, the computer program when executed by the processor further performs the steps of: determining a first misjudgment coefficient according to the first light intensity data; determining a second misjudgment coefficient according to the size of the preset image and the size of the two-dimensional code image to be displayed; and determining the misjudgment rate according to the first misjudgment coefficient and the second misjudgment coefficient.
In one embodiment, the computer program when executed by the processor further performs the steps of: the relation for determining the false positive rate according to the first false positive coefficient and the second false positive coefficient comprises the product of the first false positive coefficient and the first false positive weight and the product of the second false positive coefficient and the second false positive weight.
In one embodiment, the error correction levels comprise sequentially increasing first, second, third and fourth levels, the computer program when executed by the processor further performing the steps of: if the misjudgment rate is larger than the first preset value and smaller than the second preset value, determining that the error correction level is a first level; if the misjudgment rate is larger than or equal to the second preset value and smaller than the third preset value, determining that the error correction level is the second level; if the misjudgment rate is larger than or equal to the third preset value and smaller than the fourth preset value, determining that the error correction level is the third level; if the misjudgment rate is larger than or equal to the fourth preset value and smaller than the fifth preset value, determining that the error correction level is the fourth level.
In one embodiment, the computer program when executed by the processor further performs the steps of: generating an initial two-dimensional code image comprising a preset image according to the preset image, the size of the two-dimensional code image to be displayed and the error correction level; acquiring second light intensity data acquired by the light acquisition device; if the first light intensity data is consistent with the second light intensity data, determining the initial two-dimensional code image as a two-dimensional code image to be displayed; if the first light intensity data is inconsistent with the second light intensity data, the two-dimensional code image to be displayed is redetermined according to the second light intensity data.
According to the computer readable storage medium provided by the embodiment of the invention, when the computer program on the computer readable storage medium is executed by the processor, the error correction level matched with the current use environment is automatically determined, and then the corresponding two-dimensional code image is generated according to the determined error correction level, so that the capacity occupied by the error correction information of the generated two-dimensional code image under the condition of meeting the requirement of the current use environment is minimum, and the utilization rate of the data integral capacity of the two-dimensional code is improved.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A two-dimensional code image generation method, characterized by being applied to a computer device, the computer device comprising a light collection device, the method comprising:
acquiring first light intensity data acquired by the light acquisition device;
determining an error correction level according to the first light intensity data, the size of a preset image and the size of a two-dimensional code image to be displayed;
generating the two-dimensional code image to be displayed, which comprises the preset image, according to the preset image, the size of the two-dimensional code image to be displayed and the error correction level;
the step of determining the error correction level according to the first light intensity data, the preset image size and the size of the two-dimensional code image to be displayed comprises the following steps:
determining a misjudgment rate according to the first light intensity data, the size of the preset image and the size of the two-dimensional code image to be displayed;
determining an error correction level corresponding to the misjudgment rate according to a preset rule;
the step of determining the misjudgment rate according to the first light intensity data, the size of the preset image and the size of the two-dimensional code image to be displayed comprises the following steps:
determining a first misjudgment coefficient according to the first light intensity data;
determining a second misjudgment coefficient according to the size of the preset image and the size of the two-dimensional code image to be displayed;
And determining the misjudgment rate according to the first misjudgment coefficient and the second misjudgment coefficient, wherein the relation of determining the misjudgment rate according to the first misjudgment coefficient and the second misjudgment coefficient comprises the product of the first misjudgment coefficient and the first misjudgment weight and the product of the second misjudgment coefficient and the second misjudgment weight.
2. The two-dimensional code image generating method according to claim 1, wherein the error correction level includes a first level, a second level, a third level, and a fourth level that are sequentially increased, and the step of determining the error correction level corresponding to the erroneous judgment rate according to a preset rule includes:
if the misjudgment rate is larger than a first preset value and smaller than a second preset value, determining the error correction level as a first level;
if the misjudgment rate is larger than or equal to the second preset value and smaller than a third preset value, determining that the error correction level is a second level;
if the misjudgment rate is larger than or equal to the third preset value and smaller than a fourth preset value, determining that the error correction level is a third level;
and if the misjudgment rate is larger than or equal to the fourth preset value and smaller than a fifth preset value, determining that the error correction level is a fourth level.
3. The two-dimensional code image generating method according to claim 1, wherein the step of generating the two-dimensional code image to be displayed including the preset image according to the preset image, the size of the two-dimensional code image to be displayed, and the error correction level includes:
generating an initial two-dimensional code image comprising a preset image according to the preset image, the size of the two-dimensional code image to be displayed and the error correction level;
acquiring second light intensity data acquired by the light acquisition device;
if the first light intensity data is consistent with the second light intensity data, determining the initial two-dimensional code image as the two-dimensional code image to be displayed;
and if the first light intensity data is inconsistent with the second light intensity data, the two-dimensional code image to be displayed is redetermined according to the second light intensity data.
4. A two-dimensional code image generation apparatus, characterized by being applied to a computer device including a light collection device, the apparatus comprising:
the acquisition module is used for acquiring the first light intensity data acquired by the light acquisition device;
the determining module is used for determining an error correction level according to the first light intensity data, the size of a preset image and the size of a two-dimensional code image to be displayed;
The generation module is used for generating the two-dimensional code image to be displayed, which comprises the preset image, according to the preset image, the size of the two-dimensional code image to be displayed and the error correction level;
the determining module is specifically configured to:
determining a misjudgment rate according to the first light intensity data, the size of the preset image and the size of the two-dimensional code image to be displayed;
determining an error correction level corresponding to the misjudgment rate according to a preset rule;
the determining module is specifically further configured to: determining a first misjudgment coefficient according to the first light intensity data; determining a second misjudgment coefficient according to the size of the preset image and the size of the two-dimensional code image to be displayed; and determining the misjudgment rate according to the first misjudgment coefficient and the second misjudgment coefficient, wherein the relation of determining the misjudgment rate according to the first misjudgment coefficient and the second misjudgment coefficient comprises the product of the first misjudgment coefficient and the first misjudgment weight and the product of the second misjudgment coefficient and the second misjudgment weight.
5. A computer device, the computer device comprising:
one or more processors;
a memory for storing one or more programs that, when executed by the one or more processors, cause the one or more processors to implement the two-dimensional code image generation method of any of claims 1-3.
6. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when executed by a processor, implements the two-dimensional code image generation method according to any one of claims 1 to 3.
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