CN109388998A - A kind of method and apparatus of identifying stamp two dimensional code - Google Patents
A kind of method and apparatus of identifying stamp two dimensional code Download PDFInfo
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- CN109388998A CN109388998A CN201710662311.8A CN201710662311A CN109388998A CN 109388998 A CN109388998 A CN 109388998A CN 201710662311 A CN201710662311 A CN 201710662311A CN 109388998 A CN109388998 A CN 109388998A
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- 238000010586 diagram Methods 0.000 description 6
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- 230000003068 static effect Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
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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
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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
- G06K7/146—Methods for optical code recognition the method including quality enhancement steps
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- G06T5/92—
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10024—Color image
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Abstract
The present invention discloses a kind of method and apparatus of seal two dimensional code for identification, acquires code figure image, carries out color incremental processing to the code figure image；Image recognition processing is carried out to the code figure image after color incremental processing, obtains two-dimensional code data stream.
Description
Technical field
The present invention relates to two dimension code reading technology more particularly to a kind of method and apparatus of identifying stamp two dimensional code.
Background technique
Common two dimensional code is generally black and white, and the mode that luminance component is generallyd use when distinguishing such two dimensional code carries out
Decoding.For seal two dimensional code, such two dimensional code is usually colored, i.e., non-black and white, therefore how to distinguish seal well
Two dimensional code has become the problem of current urgent need to resolve.
Summary of the invention
In view of the above problems, the embodiment of the present invention provides a kind of method and apparatus of identifying stamp two dimensional code, on overcoming
It states problem or at least is partially solved the above problem.
In a first aspect, the embodiment of the present invention provides a kind of method of seal two dimensional code for identification, this method comprises:
Code figure image is acquired, color incremental processing is carried out to the code figure image；
Image recognition processing is carried out to the code figure image after color incremental processing, obtains two-dimensional code data stream.
It is described that color incremental processing is carried out to the code figure image in above scheme, comprising:
The colour brightness of the code figure image and background color is determined respectively；The background color is impressed position by the seal two dimensional code
The shade color set；
When the difference between the colour brightness of the code figure image and the colour brightness of the background color is less than luminance difference threshold
When value, colour brightness of the code figure image relative to the background color is adjusted.
In above scheme, colour brightness of the code figure image relative to the background color is adjusted, comprising:
When the colour brightness of the code figure image is higher than the colour brightness of the background color, the code figure figure is scaled up
The colour brightness of picture and/or the colour brightness for reducing the background color.
In above scheme, colour brightness of the code figure image relative to the background color is adjusted, comprising:
When the colour brightness of the code figure image is lower than the colour brightness of the background color, the code figure figure is scaled down
The colour brightness of picture and/or the colour brightness for increasing the background color.
In above scheme, the code figure image after the incremental processing to color carries out image recognition processing, obtains two dimensional code
Data flow, comprising:
The hollow mold of code figure image after extracting the color incremental processing；
Two-dimensional code data stream is identified from the hollow mold.
Second aspect, the embodiment of the present invention provide a kind of equipment of seal two dimensional code for identification, this method comprises:
Color incremental processing device carries out color incremental processing to the code figure image for acquiring code figure image；
Image recognizing and processing equipment is obtained for carrying out image recognition processing to the code figure image after color incremental processing
Two-dimensional code data stream.
In above scheme, the color incremental processing device includes:
Sub-device is determined, for determining the colour brightness of the code figure image and background color respectively；The background color is the print
The shade color of chapter two dimensional code institute marking position；
Sub-device is adjusted, for when the difference between the colour brightness of the code figure image and the colour brightness of the background color
When less than luminance difference threshold value, colour brightness of the code figure image relative to the background color is adjusted.
In above scheme, the adjustment sub-device is also used to be higher than the background color when the colour brightness of the code figure image
Colour brightness when, scale up the colour brightness of the code figure image and/or reduce the colour brightness of the background color.
In above scheme, the adjustment sub-device is also used to the colour brightness when the code figure image lower than the background color
Colour brightness when, scale down the colour brightness of the code figure image and/or increase the colour brightness of the background color.
In above scheme, described image recognition process unit includes:
Sub-device is extracted, for extracting the hollow mold of the code figure image after the color incremental processing；
Sub-device is identified, for identifying two-dimensional code data stream from the hollow mold.
The third aspect, the embodiment of the present invention provide a kind of terminal of seal two dimensional code for identification, comprising:
One or more processor；
Memory；
The program of storage in the memory, when being executed by one or more of processors, described program makes
The method that the processor executes the seal two dimensional code for identification.
Fourth aspect, the embodiment of the present invention provide a kind of computer readable storage medium, the computer-readable storage medium
Matter is stored with program, when said program is executed by a processor, so that the processor executes the two dimension of seal for identification
The method of code.
The method and apparatus of seal two dimensional code for identification described in the embodiment of the present invention acquires code figure image, to the code
Figure image carries out color incremental processing；Image recognition processing is carried out to the code figure image after color incremental processing, obtains two dimensional code
Data flow.So, it is possible the background color of the color of seal two dimensional code and marking position relatively in the case where, code can be passed through
Figure image carries out color incremental processing, is able to highlight code figure, to be effectively improved the recognition effect of seal two dimensional code.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is the implementation process schematic diagram of the method for seal two dimensional code for identification of the embodiment of the present invention；
Fig. 2 is the implementation process schematic diagram that the embodiment of the present invention carries out color incremental processing to the code figure image；
Fig. 3 is the display renderings one before and after color of embodiment of the present invention incremental processing；
Fig. 4 is the display renderings two before and after color of embodiment of the present invention incremental processing；
Fig. 5 is the composed structure schematic diagram of the equipment of seal two dimensional code for identification of the embodiment of the present invention；
Fig. 6 is an optional hardware structural diagram of the equipment of seal two dimensional code for identification of the embodiment of the present invention.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.
The embodiment of the present invention provides a kind of method of seal two dimensional code for identification, as shown in Figure 1, described print for identification
The method of chapter two dimensional code includes:
Step 101: acquisition code figure image carries out color incremental processing to the code figure image；
Here, terminal or server can sweep functionality scan seal two dimension by sweeping in itself wechat or Alipay
The mode of code, collects colorful code figure image.Certainly, since seal two dimensional code usually has color, it is such as red or
Blue.Since code figure image collected is colored (i.e. non-black and white), thus cannot simply by the way of luminance component into
Row decoding.Based on this, the terminal of that embodiment of the invention or server need to carry out color incremental processing to code figure image collected,
To enhance the property distinguished of colorful two dimensional code.
Step 102: image recognition processing being carried out to the code figure image after color incremental processing, obtains two-dimensional code data stream.
Specifically, terminal or server extract hollow mold from the code figure image after color incremental processing first；It
Afterwards, two-dimensional code data stream is identified from extracted hollow mold.
According to an embodiment of the present invention, as shown in Fig. 2, described carry out color incremental processing, packet to the code figure image
It includes:
Step 1011: determining the colour brightness of the code figure image and background color respectively；
Wherein, the background color for seal two dimensional code institute marking position shade color.
Step 1022: whether detecting difference between the colour brightness of the code figure image and the colour brightness of the background color
Less than luminance difference threshold value；
Specifically, terminal or server be after determining the colour brightness of colour brightness and background color of the code figure image,
Further the colour brightness of the two is carried out to make poor processing, to judge the colour brightness of the code figure image and the face of the background color
Difference between colour brightness is to be less than luminance difference threshold value；When the colour brightness of the code figure image and the color of the background color
When difference between brightness is less than luminance difference threshold value, illustrate that code figure can not be highlighted under the background color, therefore needs to code figure
Image carries out color incremental processing, that is, continues to execute subsequent step 1013；Otherwise, the colour brightness when the code figure image and institute
When stating the difference between the colour brightness of background color more than or equal to luminance difference threshold value, illustrate normally highlight code under the background color
Figure, therefore need not continue to execute the color incremental processing to code figure image terminates described in the embodiment of the present invention seal for identification
The method flow of two dimensional code.
Step 1013: when the difference between the colour brightness of the code figure image and the colour brightness of the background color is less than bright
When spending difference threshold, colour brightness of the code figure image relative to the background color is adjusted.
In an embodiment of the present invention, colour brightness of the adjustment code figure image relative to the background color, comprising:
When the colour brightness of the code figure image is higher than the colour brightness of the background color, the color of the code figure image is scaled up
Brightness and/or the colour brightness for reducing the background color.
Here, the ratio can be according between the colour brightness of the code figure image and the colour brightness of the background color
Ratio between difference and luminance difference threshold value is positively correlated.Specifically, difference even between the two and luminance difference threshold
Large percentage between value then increases the colour brightness of the code figure image according to larger proportion and/or reduces the background color
Colour brightness.
In one example, as described in Figure 3, before carrying out color incremental processing, the colour brightness of the code figure image
Value is 90, and the value of the colour brightness of the background color is 75, and the difference of the two is 15, and the value of color difference threshold value is 30；
Then since the difference is less than color difference threshold value, therefore following color incremental processing can be executed: institute can be scaled up
Yard colour brightness of figure image is stated to 120；The colour brightness of the background color can also be scaled down to 45；It can also be in proportion
While increasing the colour brightness of the code figure image to 105, the colour brightness of the background color is scaled down to 60.
In an embodiment of the present invention, colour brightness of the adjustment code figure image relative to the background color, comprising:
When the colour brightness of the code figure image is lower than the colour brightness of the background color, the color of the code figure image is scaled down
Brightness and/or the colour brightness for increasing the background color.
Here, the ratio can be according between the colour brightness of the code figure image and the colour brightness of the background color
Ratio between difference and luminance difference threshold value is positively correlated.Specifically, difference even between the two and luminance difference threshold
Large percentage between value then reduces the colour brightness of the code figure image according to larger proportion and/or increases the background color
Colour brightness.Certainly, colour brightness value here is merely illustrative description, is not used in the color described in the embodiment of the present invention
The restriction of brightness.
In one example, as described in Figure 4, before carrying out color incremental processing, the colour brightness of the code figure image
Value is 75, and the value of the colour brightness of the background color is 90, and the difference of the two is 15, and the value of color difference threshold value is 30；
Then since the difference is less than color difference threshold value, therefore following color incremental processing can be executed: institute can be scaled down
Yard colour brightness of figure image is stated to 45；The colour brightness of the background color can also be scaled up to 120；It can also be in proportion
While reducing the colour brightness of the code figure image to 60, the colour brightness of the background color is scaled up to 105.Certainly,
Here colour brightness value is merely illustrative description, is not used in the restriction of the colour brightness described in the embodiment of the present invention.
The method and apparatus of seal two dimensional code for identification described in the embodiment of the present invention acquires code figure image, to the code
Figure image carries out color incremental processing；Image recognition processing is carried out to the code figure image after color incremental processing, obtains two dimensional code
Data flow.So, it is possible the background color of the color of seal two dimensional code and marking position relatively in the case where, code can be passed through
Figure image carries out color incremental processing, is able to highlight code figure, to be effectively improved the recognition effect of seal two dimensional code.
The embodiment of the present invention also provides a kind of equipment of seal two dimensional code for identification, as shown in figure 5, the equipment includes:
Color incremental processing device 51 carries out color incremental processing to the code figure image for acquiring code figure image；
Image recognizing and processing equipment 52 is obtained for carrying out image recognition processing to the code figure image after color incremental processing
To two-dimensional code data stream.
In one embodiment, the color incremental processing device 51 includes:
Sub-device is determined, for determining the colour brightness of the code figure image and background color respectively；The background color is the print
The shade color of chapter two dimensional code institute marking position；
Sub-device is adjusted, for when the difference between the colour brightness of the code figure image and the colour brightness of the background color
When less than luminance difference threshold value, colour brightness of the code figure image relative to the background color is adjusted.
In one embodiment, the adjustment sub-device is also used to the colour brightness when the code figure image higher than described
When the colour brightness of background color, scales up the colour brightness of the code figure image and/or reduce the colour brightness of the background color.
In one embodiment, the adjustment sub-device is also used to the colour brightness when the code figure image lower than described
When the colour brightness of background color, scales down the colour brightness of the code figure image and/or increase the colour brightness of the background color.
In one embodiment, described image recognition process unit 52 includes:
Sub-device is extracted, for extracting the hollow mold of the code figure image after the color incremental processing；
Sub-device is identified, for identifying two-dimensional code data stream from the hollow mold.
In practical application, above-mentioned color incremental processing device 51, image recognizing and processing equipment 52 and its sub-device it is specific
Structure may both correspond to processor.The specific structure of processor can be central processing unit (CPU, Central
Processing Unit), microprocessor (MCU, Micro Controller Unit), digital signal processor (DSP,
Digital Signal Processing) or programmable logic device (PLC, Programmable Logic Controller)
Deng the set of electronic component or electronic component with processing function.Wherein, the processor includes executable code, institute
It states executable code to be stored in a storage medium, the processor can be by the communication interfaces such as bus and the storage medium
It is connected, when executing the corresponding function of specific each unit, is read from the storage medium and run the executable code.
The storage medium is preferably non-moment storage medium for storing the part of the executable code.
The equipment of seal two dimensional code may be disposed at server side for identification described in the present embodiment, also can be set in terminal
Side.
Illustratively, Fig. 6 is shown provided with an optional hardware configuration of the equipment 600 of seal two dimensional code for identification
Schematic diagram, including at least one processor 601, memory 602, at least one network interface 604 and user interface 603.For
Various components in the equipment 600 of identifying stamp two dimensional code are coupled by bus system 605.It is understood that bus system
605 for realizing the connection communication between these components.Bus system 605 further includes that power supply is total in addition to including data/address bus
Line, control bus and status signal bus in addition.But for the sake of clear explanation, various buses are all designated as total linear system in Fig. 6
System 605.
Wherein, user interface 603 may include display, keyboard, mouse, trace ball, click wheel, key, button, sense of touch
Plate or touch screen etc..
It is appreciated that memory 602 can be volatile memory or nonvolatile memory, may also comprise volatibility and
Both nonvolatile memories.Wherein, nonvolatile memory can be read-only memory (ROM, Read Only Memory),
Programmable read only memory (PROM, Programmable Read-Only Memory), Erasable Programmable Read Only Memory EPROM
(EPROM, Erasable Programmable Read-Only Memory), electrically erasable programmable read-only memory
The storage of (EEPROM, Electrically Erasable Programmable Read-Only Memory), magnetic random access
Device (FRAM, ferromagnetic random access memory), flash memory (Flash Memory), magnetic surface are deposited
Reservoir, CD or CD-ROM (CD-ROM, Compact Disc Read-Only Memory)；Magnetic surface storage can be
Magnetic disk storage or magnetic tape storage.Volatile memory can be random access memory (RAM, Random Access
Memory), it is used as External Cache.By exemplary but be not restricted explanation, the RAM of many forms is available, such as
Static random access memory (SRAM, Static Random Access Memory), synchronous static random access memory
(SSRAM, Synchronous Static Random Access Memory), dynamic random access memory (DRAM,
Dynamic Random Access Memory), Synchronous Dynamic Random Access Memory (SDRAM, Synchronous
Dynamic Random Access Memory), double data speed synchronous dynamic RAM (DDRSDRAM,
Double Data Rate Synchronous Dynamic Random Access Memory), enhanced synchronous dynamic random
Access memory (ESDRAM, Enhanced Synchronous Dynamic Random Access Memory), synchronized links
Dynamic random access memory (SLDRAM, SyncLink Dynamic Random Access Memory), direct rambus
Random access memory (DRRAM, Direct Rambus Random Access Memory).Description of the embodiment of the present invention is deposited
Reservoir 602 is intended to include but is not limited to the memory of these and any other suitable type.
Memory 602 in the embodiment of the present invention supports seal two dimension for identification for storing various types of data
The operation of the equipment 600 of code.The example of these data includes: for operating in the equipment 600 of seal two dimensional code for identification
Any computer program.Wherein, operating system 6021 includes various system programs, such as ccf layer, core library layer, driving layer
Deng for realizing various basic businesses and the hardware based task of processing.Application program 6022 may include various using journey
Sequence, for realizing various applied business.Realize that the program of present invention method may be embodied in application program 6022.
The method that the embodiments of the present invention disclose can be applied in processor 601, or be realized by processor 601.
Processor 601 may be a kind of IC chip, the processing capacity with signal.During realization, the above method it is each
Step can be completed by the integrated logic circuit of the hardware in processor 601 or the instruction of software form.Above-mentioned processing
Device 601 can be general processor, DSP or other programmable logic device, discrete gate or transistor logic, divide
Vertical hardware component etc..Processor 601 may be implemented or execute disclosed each method, step and logic in the embodiment of the present invention
Block diagram.General processor can be microprocessor or any conventional processor etc..In conjunction with disclosed in the embodiment of the present invention
The step of method, can be embodied directly in hardware decoding processor and execute completion, or with hardware in decoding processor and soft
Part block combiner executes completion.Software module can be located in storage medium, which is located at memory 602, processor
601 read the information in memory 602, in conjunction with the step of its hardware completion preceding method.
Specifically, the processor 601 is read from the memory 602 by the bus system 605 and executes use
In the executable instruction of the method for identifying stamp two dimensional code, following steps can be performed:
Code figure image is acquired, color incremental processing is carried out to the code figure image；
Image recognition processing is carried out to the code figure image after color incremental processing, obtains two-dimensional code data stream.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and ability
Field technique personnel can be designed alternative embodiment without departing from the scope of the appended claims.In the claims,
Any reference symbol between parentheses should not be configured to limitations on claims.Word "comprising" does not exclude the presence of not
Element or step listed in the claims.Word "a" or "an" located in front of the element does not exclude the presence of multiple such
Element.The present invention can be by means of including the hardware of several different elements and being come by means of properly programmed computer real
It is existing.In the unit claims listing several devices, several in these devices can be through the same hardware branch
To embody.The use of word first, second, and third does not indicate any sequence.
Claims (10)
1. a kind of method of seal two dimensional code for identification, this method comprises:
Code figure image is acquired, color incremental processing is carried out to the code figure image；
Image recognition processing is carried out to the code figure image after color incremental processing, obtains two-dimensional code data stream.
2. according to the method described in claim 1, described carry out color incremental processing to the code figure image, comprising:
The colour brightness of the code figure image and background color is determined respectively；The background color is seal two dimensional code institute marking position
Shade color；
When the difference between the colour brightness of the code figure image and the colour brightness of the background color is less than luminance difference threshold value,
Adjust colour brightness of the code figure image relative to the background color.
3. according to the method described in claim 2, wherein, adjust colour brightness of the code figure image relative to the background color,
Include:
When the colour brightness of the code figure image is higher than the colour brightness of the background color, the code figure image is scaled up
Colour brightness and/or the colour brightness for reducing the background color.
4. according to the method described in claim 2, wherein, adjust colour brightness of the code figure image relative to the background color,
Include:
When the colour brightness of the code figure image is lower than the colour brightness of the background color, the code figure image is scaled down
Colour brightness and/or the colour brightness for increasing the background color.
5. a kind of equipment of seal two dimensional code for identification, the equipment include:
Color incremental processing device carries out color incremental processing to the code figure image for acquiring code figure image；
Image recognizing and processing equipment obtains two dimension for carrying out image recognition processing to the code figure image after color incremental processing
Code data flow.
6. equipment according to claim 5, the color incremental processing device include:
Sub-device is determined, for determining the colour brightness of the code figure image and background color respectively；The background color is the seal two
Tie up the shade color of code institute marking position；
Sub-device is adjusted, for being less than when the difference between the colour brightness of the code figure image and the colour brightness of the background color
When luminance difference threshold value, colour brightness of the code figure image relative to the background color is adjusted.
7. equipment according to claim 6, wherein
The adjustment sub-device is also used to press when the colour brightness of the code figure image is higher than the colour brightness of the background color
Ratio increases the colour brightness of the code figure image and/or reduces the colour brightness of the background color.
8. equipment according to claim 6, wherein
The adjustment sub-device is also used to press when the colour brightness of the code figure image is lower than the colour brightness of the background color
Ratio reduces the colour brightness of the code figure image and/or increases the colour brightness of the background color.
9. a kind of terminal of seal two dimensional code for identification, comprising:
One or more processor；
Memory；
The program of storage in the memory, when being executed by one or more of processors, described program makes described
Processor executes the method as described in any one of claim 1-4.
10. a kind of computer readable storage medium, the computer-readable recording medium storage has program, when described program is located
When managing device execution, so that the processor executes the method as described in any one of claim 1-4.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710662311.8A CN109388998A (en) | 2017-08-04 | 2017-08-04 | A kind of method and apparatus of identifying stamp two dimensional code |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710662311.8A CN109388998A (en) | 2017-08-04 | 2017-08-04 | A kind of method and apparatus of identifying stamp two dimensional code |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1885311A (en) * | 2006-05-29 | 2006-12-27 | 深圳矽感科技有限公司 | Two-dimensional code, encoding and decoding method thereof |
| CN103034997A (en) * | 2012-11-30 | 2013-04-10 | 杭州易尊数字科技有限公司 | Foreground detection method for separation of foreground and background of surveillance video |
| CN105245933A (en) * | 2015-09-06 | 2016-01-13 | 青岛中星微电子有限公司 | Screen display method and device |
-
2017
- 2017-08-04 CN CN201710662311.8A patent/CN109388998A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1885311A (en) * | 2006-05-29 | 2006-12-27 | 深圳矽感科技有限公司 | Two-dimensional code, encoding and decoding method thereof |
| CN103034997A (en) * | 2012-11-30 | 2013-04-10 | 杭州易尊数字科技有限公司 | Foreground detection method for separation of foreground and background of surveillance video |
| CN105245933A (en) * | 2015-09-06 | 2016-01-13 | 青岛中星微电子有限公司 | Screen display method and device |
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