CN103902875B - The generation method and device and verification method and device of identifying code picture - Google Patents
The generation method and device and verification method and device of identifying code picture Download PDFInfo
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- CN103902875B CN103902875B CN201410077527.4A CN201410077527A CN103902875B CN 103902875 B CN103902875 B CN 103902875B CN 201410077527 A CN201410077527 A CN 201410077527A CN 103902875 B CN103902875 B CN 103902875B
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- picture
- pixel value
- identifying code
- texture
- pixel
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
- G06F21/36—User authentication by graphic or iconic representation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/2133—Verifying human interaction, e.g., Captcha
Abstract
The present invention proposes the generation method and device and verification method and device of a kind of identifying code picture, to reduce machine automatic identification success rate.The generation method of the identifying code picture includes generation texture picture；Determine the position of identifying code；In the position of the identifying code, the pixel value to the texture picture is modified, and is verified a yard picture.The method can reduce machine automatic identification success rate, reduce identifying code and be cracked risk, improve internet security.
Description
Technical field
The present invention relates to technical field of network security, more particularly to a kind of identifying code picture generation method and device and test
Card method and apparatus.
Background technology
In order to prevent certain user from being logged in automatically using machine, the computer operation, many nets such as release news, download
Stand when user carries out correlation computer operation, require user input identifying code.Identifying code is typically with the shape of a width picture
What formula showed, user is input into according to the character shown in picture.
With the development of technology, machine can be automatically performed the identification to identifying code, the automatic identification of machine by software
Continuous identifying code on image is relied primarily on, while needing the identifying code to have larger contrast with background in itself.Know to reduce machine
Other success rate, can be blurred to identifying code, be distorted, and the treatment such as noise is added in the background, but, because machine is automatic
Recognition capability is more and more stronger, still in the presence of discrimination higher.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.
Therefore, it is an object of the present invention to propose a kind of generation method of identifying code picture, the method can be reduced
Machine reduces the risk that identifying code is cracked, and then improve internet security to the success rate of identifying code automatic identification.
It is another object of the present invention to propose a kind of generating means of identifying code picture.
It is another object of the present invention to propose a kind of verification method.
It is another object of the present invention to propose a kind of checking device.
To reach above-mentioned purpose, the generation method of the identifying code picture that first aspect present invention embodiment is proposed, including：It is raw
Into texture picture；Determine the position of identifying code；In the position of the identifying code, the pixel value to the texture picture is repaiied
Change, be verified a yard picture.
The generation method of the identifying code picture that first aspect present invention embodiment is proposed, by texture picture to confirmed
Demonstrate,prove the pixel value at the position of code to modify, can occur pixel value changes, people at the position of identifying code in texture picture
Eye can capture this change, so as to identify identifying code, but, because the pixel value of these positions is discontinuous, and with
Less, machine is difficult to background difference, so as to reduce machine recognition success rate, reduces the risk that identifying code is cracked, and improves
Internet security.
To reach above-mentioned purpose, the generating means of the identifying code that second aspect present invention embodiment is proposed, including：Generation mould
Block, for generating texture picture；Determining module, the position for determining identifying code；Processing module, in the identifying code
Position, the pixel value to the texture picture is modified, and is verified a yard picture.
The generating means of the identifying code that second aspect present invention embodiment is proposed, by correspondence identifying code in texture picture
Position at pixel value modify, can occur pixel value changes at the position of identifying code in texture picture, human eye can
To capture this change, so as to identify identifying code, but, because the pixel value of these positions is discontinuous, and and background
Less, machine is difficult to difference, so as to reduce machine recognition success rate, reduces the risk that identifying code is cracked, and improves network
Security.
To reach above-mentioned purpose, the verification method that third aspect present invention embodiment is proposed, including：Display identifying code figure
Piece, wherein, the identifying code picture is, in the position of identifying code, to be obtained after being modified to the pixel value of texture picture；Connect
Receive user input；The user input is verified according to the identifying code picture.
The verification method that third aspect present invention embodiment is proposed, identifying code picture is used by checking, and this is tested
Card code picture obtained after identifying code position carries out pixel value modification in texture picture, it is possible to achieve use is tested
The discontinuity of identifying code in card code picture, and background and identifying code difference are smaller, therefore, it can reduce machine recognition success
Rate, reduces the risk that identifying code is cracked, and improves internet security.
To reach above-mentioned purpose, the checking device that fourth aspect present invention embodiment is proposed, including：Display module, is used for
Display identifying code picture, wherein, the identifying code picture is that, in the position of identifying code, the pixel value to texture picture is modified
Obtain afterwards；Receiver module, for receiving user input；Authentication module, for according to the identifying code picture to the user
Input is verified.
The checking device that fourth aspect present invention embodiment is proposed, identifying code picture is used by checking, and this is tested
Card code picture obtained after identifying code position carries out pixel value modification in texture picture, it is possible to achieve use is tested
The discontinuity of identifying code in card code picture, and background and identifying code difference are smaller, therefore, it can reduce machine recognition success
Rate, reduces the risk that identifying code is cracked, and improves internet security.
To reach above-mentioned purpose, the client device that fifth aspect present invention embodiment is proposed, including：Housing, processor,
Memory, circuit board and power circuit, wherein, circuit board is placed in the interior volume that housing is surrounded, and processor and memory set
Put on circuit boards；Power circuit, powers for each circuit or device for client device；Memory is used to store and can hold
Line program code；Processor is run and executable program code pair by reading the executable program code stored in memory
The program answered, for performing following steps：Generation texture picture；Determine the position of identifying code；In the position of the identifying code,
Pixel value to the texture picture is modified, and is verified a yard picture.
The client device that fifth aspect present invention embodiment is proposed, by the position to correspondence identifying code in texture picture
The pixel value at place is modified, and can occur pixel value changes at the position of identifying code in texture picture, and human eye can catch
To this change, so as to identify identifying code, but, because the pixel value of these positions is discontinuous, and with background difference not
Greatly, machine is difficult to, so as to reduce machine recognition success rate, reduces the risk that identifying code is cracked, and improves internet security.
To reach above-mentioned purpose, the client device that sixth aspect present invention embodiment is proposed, including：Housing, processor,
Memory, circuit board and power circuit, wherein, circuit board is placed in the interior volume that housing is surrounded, and processor and memory set
Put on circuit boards；Power circuit, powers for each circuit or device for client device；Memory is used to store and can hold
Line program code；Processor is run and executable program code pair by reading the executable program code stored in memory
The program answered, for performing following steps：Display identifying code picture, wherein, the identifying code picture is in the position of identifying code
Put, obtained after being modified to the pixel value of texture picture；Receive user input；According to the identifying code picture to the use
Family input is verified.
The client device that sixth aspect present invention embodiment is proposed, by using identifying code picture in checking, and should
Identifying code picture is obtained after identifying code position carries out pixel value modification in texture picture, it is possible to achieve use
The discontinuity of identifying code in identifying code picture, and background and identifying code difference are smaller, therefore, it can reduce machine recognition success
Rate, reduces the risk that identifying code is cracked, and improves internet security.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by practice of the invention.
Brief description of the drawings
The above-mentioned and/or additional aspect of the present invention and advantage will become from the following description of the accompanying drawings of embodiments
Substantially and be readily appreciated that, wherein：
Fig. 1 is the schematic flow sheet of the generation method of the identifying code picture that one embodiment of the invention is proposed；
Fig. 2 is a kind of schematic diagram of texture picture in the embodiment of the present invention；
Fig. 3 is the schematic diagram of another texture picture in the embodiment of the present invention；
Fig. 4 is a kind of schematic diagram of initial identifying code picture in the embodiment of the present invention；
Fig. 5 is a kind of schematic diagram of identifying code picture of generation in the embodiment of the present invention；
Fig. 6 is the schematic diagram of another identifying code picture of generation in the embodiment of the present invention；
Fig. 7 is the schematic flow sheet of the generation method of the identifying code picture that another embodiment of the present invention is proposed；
Fig. 8 is the structural representation of the generating means of the identifying code that another embodiment of the present invention is proposed；
Fig. 9 is the schematic flow sheet of the verification method that another embodiment of the present invention is proposed；
Figure 10 is the structural representation of the checking device that another embodiment of the present invention is proposed.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, is only used for explaining the present invention, and is not considered as limiting the invention.Conversely, this
Inventive embodiment includes all changes fallen into the range of the spiritual and intension of attached claims, modification and is equal to
Thing.
Fig. 1 is the schematic flow sheet of the generation method of the identifying code picture that one embodiment of the invention is proposed, the method includes：
S11：Generation texture picture.
Wherein, the texture picture can be colour picture, or gray scale picture.With texture maps in the embodiment of the present invention
As a example by piece is gray scale picture.
In order to preferably obtain discrete identifying code, the texture picture can be by the pixel groups of the discontinuous change of pixel value
Into.That is, the color value of each pixel of texture picture（Rgb value）Or gray value difference is larger.
Further, the histogram of texture picture can be bimodal distribution.By taking gray scale picture as an example, the Nogata of gray scale picture
Figure is the frequency for counting gray scale appearance, it is however generally that, transverse axis is gray scale, and the longitudinal axis is the normalization frequency.When gray scale picture
When histogram is bimodal distribution, it is possible to which the pixel value for ensureing the gray scale picture is non-continuously distributed, such as gray scale picture
When being made up of the pixel of black and white, in histogram, black picture element concentrates on the place that transverse axis is 0, and white pixel is concentrated
In the place that transverse axis is 255, transverse axis is（0,255）There is no pixel distribution in this interval.When the histogram of texture picture is double
When peak is distributed, the pixel value for also ensuring that texture picture is discrete.
On the other hand, texture picture includes a kind of texture or at least two texture.The embodiment of the present invention is with texture maps
As a example by piece is made up of black picture element and white pixel, referring to Fig. 2 and Fig. 3, sets forth texture picture and be made up of a kind of texture
Schematic diagram, and the schematic diagram that texture picture is made up of two kinds of textures.
S12：Determine the position of identifying code；
Wherein, the position of identifying code can determine according to initial identifying code picture set in advance.
Initial identifying code picture includes identifying code and background.In correlation technique, it is also possible to checking is shown in background
Code, therefore, the idiographic flow for generating initial identifying code picture may refer to correlation technique, will not be repeated here.
Referring to Fig. 4, give a kind of schematic diagram of initial identifying code picture, the identifying code in the picture be 0-9 this 10
Individual numeral, background is white pattern.
The size of initial identifying code picture can be identical with the size of texture picture, for example, initial identifying code picture
With texture picture in transverse and longitudinal all pixels comprising same number.
S13：In the position of the identifying code, the pixel value to the texture picture is modified, and is verified a yard picture.
Wherein, by taking the picture shown in initial identifying code picture is as Fig. 4 as an example, the color of identifying code is black, background
Color is white, and the gray value of black picture element is 0, and the gray value of white pixel is 255.
In texture picture, each pixel is corresponded to, whether the position is identifying code institute in searching initial identifying code picture
In position, if just the pixel value to the pixel in texture picture is modified.For example, a certain in for texture picture
Pixel A, it is assumed that the position coordinates of A is（X0, y0）, then see in initial identifying code picture（X0, y0）The picture of pixel at position
Element value, if the pixel value is 0, then show that the position is exactly the position of identifying code, that is, in texture picture pixel A position
Put is the position of identifying code, it is necessary to be modified to the pixel value of pixel A., whereas if in initial identifying code picture (x0,
Y0) pixel value of pixel is 255 at position, indicates that the position is not the position of identifying code, just not to the position in texture picture
The pixel value for putting pixel is modified.
In modification, pixel value is larger, then reduce a setting value, and pixel value is smaller, then increase a setting value.Example
Such as, texture picture is made up of black and white pattern, and the pixel value of the pixel A in texture picture needs modification, then when the pixel of pixel A
Be worth for 0 when, then increase a setting value, when pixel A pixel value be 255 when, then reduce a setting value.
Further, the setting value that diverse location is increasedd or decreased can be with setting value that is identical or different, being used during increase
Can be with identical or different with the setting value used when reducing.For example, when the pixel value of pixel A and pixel B is required for modification, it is assumed that
The pixel value of pixel A and pixel B is all 0, then the pixel value of pixel A can be increased into first and is worth, and by the pixel value of pixel B
Increase second value；Or, it is assumed that the pixel value of pixel A and pixel B is all 255, then the pixel value of pixel A can be reduced into the
One value, and the pixel value of pixel B is reduced into second value；Or, it is assumed that the pixel value of pixel A is 0, and the pixel value of pixel B is
255, then the pixel value of pixel A can be increased by first and be worth, and the pixel value of pixel B is reduced into second value.
Due at checking code position to texture picture in the pixel value of pixel be modified, it is possible to so that these positions
Put notable relative to the location comparison of unmodified pixel value（salient）, after human eye sees these notable positions, it is possible to recognize
Go out identifying code.
Fig. 5 and Fig. 6 sets forth two kinds of schematic diagrames of identifying code picture, and two kinds of identifying code pictures are all using above-mentioned
What flow was obtained after being modified to the pixel value of texture picture at checking code position, unlike, Fig. 5 is with texture picture bag
As a example by a kind of texture, Fig. 6 is so that texture picture includes two kinds of textures as an example.
Referring to Fig. 5 or Fig. 6, human eye can see identifying code, it is necessary to illustrate in the identifying code picture, due to
The reason such as display and anaclasis, human eye can see apparent identifying code in side.But, due to the identifying code figure
Piece is obtained after being modified to the pixel value of texture picture, and the gray value or rgb value of identifying code are no longer continuous, machines
Just it is difficult to, also, identifying code and smaller as the difference between the texture of background, this adds increased the difficulty of machine recognition
Degree.
The present embodiment is modified by the pixel value at the position of correspondence identifying code in texture picture, can be in texture
Occur pixel value changes in picture at the position of identifying code, human eye can capture this change, so as to identify identifying code, but
It is that because the pixel value of these positions is discontinuous, and with background difference less, machine is difficult to, so as to reduce machine knowledge
Other success rate, reduces the risk that identifying code is cracked, and improves internet security.
Fig. 7 is the schematic flow sheet of the generation method of the identifying code picture that another embodiment of the present invention is proposed, the present embodiment
One kind being provided with reference to a specific example and implementing flow, the method includes：
S71：Generation texture picture and initial identifying code picture；
In the present embodiment, it is assumed that texture picture is the gray scale picture of black and white composition, identifying code in initial identifying code picture
It is black, background is white.
The step of specific generation texture picture and initial identifying code picture, may refer to embodiment illustrated in fig. 1, herein not
Repeat again.
S72：A pixel is selected in texture picture, the position coordinates of the pixel is obtained, judged in initial identifying code
In picture, whether the gray value of the pixel on the position is 0, if so, performing S73, otherwise performs S76.
Assuming that the pixel selected in texture picture is pixel A, the position coordinates of the pixel is（x0,y0）, the step is
Judge in initial identifying code picture, position（x0,y0）Whether the gray value for locating pixel is 0, wherein, when gray value is 0
When, show the position for identifying code position, conversely, when gray value is 255, showing that the position is background position.
S73：Whether the gray value for judging the position pixel in texture picture is 0, if so, performing S74, otherwise, is performed
S75。
For example, whether the gray value for judging pixel A is 0.
S74：The gray value of the position pixel is increased into by the first setting value in texture picture.Afterwards, S77 is performed.
For example, the gray value of pixel A is increased into the first setting value.
S75：The gray value of the position pixel is reduced into the second setting value in texture picture.Afterwards, S77 is performed.
For example, the gray value of pixel A is reduced into the second setting value.
First setting value and the second setting value can be with identical or different.Also, the first setting value and the second setting value can be with
It is the value less than given threshold set in advance.
S76：Keep that the gray value of position pixel is constant in texture picture.
For example, keeping the gray value of pixel A constant.
S77：Judge with the presence or absence of non-selected pixel in texture picture, if so, repeating S72 and its follow-up step
Suddenly, otherwise, S78 is performed.
S78：Flow terminates.
The present embodiment is modified by the correspondence identifying code position in texture picture to pixel value, can be caused
The pixel of these positions is more notable, realizes identification of the human eye to identifying code；In addition, modified by pixel value, can be with
The discontinuous change of pixel value is realized, increases machine recognition difficulty；Also, using the texture picture of black and white gray scale, one can be entered
Step ensures the discontinuous change of pixel value, further increases machine recognition difficulty；Furthermore, increasedd or decreased when pixel value is changed
Value be smaller value, the difference between identifying code and texture can be reduced, it is also possible to from another point of view increase machine recognition difficulty.
Therefore, the present embodiment can increase identification difficulty of the machine to identifying code, reduce machine recognition success rate, reduce identifying code by machine
The risk that device is cracked, it is ensured that internet security.
Fig. 8 is the structural representation of the generating means of the identifying code that another embodiment of the present invention is proposed, the device 80 includes
Generation module 81, determining module 82 and processing module 83.
Generation module 81 is used to generate texture picture；Determining module 82 is used to determine the position of identifying code；Processing module 83
For in the position of the identifying code, the pixel value to the texture picture to be modified, and is verified a yard picture.
In one embodiment, the texture picture of generation module generation by the discontinuous change of pixel value pixel groups
Into.
In another embodiment, the histogram of the texture picture of the generation module generation is bimodal distribution.
In another embodiment, the processing module specifically for：
When the pixel value before a modification is more than setting value, reduce the pixel value；Or,
When the pixel value before a modification is less than setting value, increase the pixel value.
In another embodiment, the processing module specifically for：
When pixel value is reduced, the pixel value that diverse location reduces is different；Or,
When pixel value is increased, the increased pixel value of diverse location is different；Or,
When pixel value is reduced, the pixel value that diverse location reduces is identical, and when pixel value is increased, diverse location is increased
Pixel value is identical, and the pixel value for reducing is different from increased pixel value or identical.
In another embodiment, the texture picture of the generation module generation includes a kind of texture or at least two
Texture.
In another embodiment, the texture picture of the generation module generation is gray scale picture or colour picture.
In another embodiment, the determining module specifically for：
According to presetting, initial identifying code picture is generated, the initial identifying code picture includes identifying code and the back of the body
Scape；
According to the initial identifying code picture, the position of identifying code is determined.
In another embodiment, the determining module specifically for：
According to presetting, initial identifying code picture is generated, the initial identifying code picture includes identifying code and the back of the body
Scape；
According to the initial identifying code picture, the position of identifying code is determined.
The specific handling process of the device of the present embodiment may refer to the embodiment of the generation method of above-mentioned identifying code picture,
Will not be repeated here.
The present embodiment is modified by the pixel value at the position of correspondence identifying code in texture picture, can be in texture
Occur pixel value changes in picture at the position of identifying code, human eye can capture this change, so as to identify identifying code, but
It is that because the pixel value of these positions is discontinuous, and with background difference less, machine is difficult to, so as to reduce machine knowledge
Other success rate, reduces the risk that identifying code is cracked, and improves internet security.
Fig. 9 is the schematic flow sheet of the verification method that another embodiment of the present invention is proposed, the method includes：
S91：Display identifying code picture, wherein, the identifying code picture is in the position of identifying code, to the picture of texture picture
What plain value was obtained after modifying；
S92：Receive user input；
S93：The user input is verified according to the identifying code picture.
In one embodiment, the texture picture is made up of the pixel of the discontinuous change of pixel value.
In another embodiment, the histogram of the texture picture is bimodal distribution.
In another embodiment, the pixel value to texture picture is modified, including：
When the pixel value before a modification is more than setting value, reduce the pixel value；Or,
When the pixel value before a modification is less than setting value, increase the pixel value.
In another embodiment, when pixel value is reduced, the pixel value that diverse location reduces is different；Or,
When pixel value is increased, the increased pixel value of diverse location is different；Or,
When pixel value is reduced, the pixel value that diverse location reduces is identical, and when pixel value is increased, diverse location is increased
Pixel value is identical, and the pixel value for reducing is different from increased pixel value or identical.
In another embodiment, the texture picture includes a kind of texture or at least two texture.
In another embodiment, the texture picture is gray scale picture or colour picture.
In another embodiment, the position of the identifying code determines in the following way：
According to presetting, initial identifying code picture is generated, the initial identifying code picture includes identifying code and the back of the body
Scape；
According to the initial identifying code picture, the position of identifying code is determined.
In another embodiment, the size of the initial identifying code picture is identical with the size of the texture picture.
The identifying code picture used in the present embodiment can be obtained referring specifically to the generation method using above-mentioned identifying code picture
The identifying code picture for arriving, will not be repeated here.
The present embodiment is by using identifying code picture in checking, and the identifying code picture is in checking in texture picture
Code position carries out what is obtained after pixel value modification, it is possible to achieve the discontinuity of identifying code in the identifying code picture of use,
And background and identifying code difference are smaller, therefore, it can reduce machine recognition success rate, reduce the risk that identifying code is cracked, carry
Internet security high.
Figure 10 is the structural representation of the checking device that another embodiment of the present invention is proposed, the device 100 includes display mould
Block 101, receiver module 102 and authentication module 103.
Display module 101 be used for show identifying code picture, wherein, the identifying code picture be in the position of identifying code, it is right
What the pixel value of texture picture was obtained after modifying；Receiver module 102 is used to receive user input；Authentication module 103 is used for
The user input is verified according to the identifying code picture.
In one embodiment, the texture picture is made up of the pixel of the discontinuous change of pixel value.
In another embodiment, the histogram of the texture picture is bimodal distribution.
In another embodiment, the pixel value of the texture picture is changed in the following way：
When the pixel value before a modification is more than setting value, reduce the pixel value；Or,
When the pixel value before a modification is less than setting value, increase the pixel value.
In another embodiment, when pixel value is reduced, the pixel value that diverse location reduces is different；Or,
When pixel value is increased, the increased pixel value of diverse location is different；Or,
When pixel value is reduced, the pixel value that diverse location reduces is identical, and when pixel value is increased, diverse location is increased
Pixel value is identical, and the pixel value for reducing is different from increased pixel value or identical.
In another embodiment, the texture picture includes a kind of texture or at least two texture.
In another embodiment, the texture picture is gray scale picture or colour picture.
In another embodiment, the position of the identifying code determines in the following way：
According to presetting, initial identifying code picture is generated, the initial identifying code picture includes identifying code and the back of the body
Scape；
According to the initial identifying code picture, the position of identifying code is determined.
In another embodiment, the size of the initial identifying code picture is identical with the size of the texture picture.
The identifying code picture used in the present embodiment can be obtained referring specifically to the generation method using above-mentioned identifying code picture
The identifying code picture for arriving, will not be repeated here.
The present embodiment is by using identifying code picture in checking, and the identifying code picture is in checking in texture picture
Code position carries out what is obtained after pixel value modification, it is possible to achieve the discontinuity of identifying code in the identifying code picture of use,
And background and identifying code difference are smaller, therefore, it can reduce machine recognition success rate, reduce the risk that identifying code is cracked, carry
Internet security high.
The embodiment of the present invention additionally provides a kind of client device, and the client device includes housing, processor, storage
Device, circuit board and power circuit, wherein, circuit board is placed in the interior volume that housing is surrounded, and processor and memory are arranged on
On circuit board；Power circuit, powers for each circuit or device for the client device；Memory is used to store executable
Program code；Processor is corresponding with executable program code to run by reading the executable program code of storage in memory
Program, for perform following steps：
S11’：Generation texture picture.
Wherein, the texture picture can be colour picture, or gray scale picture.With texture maps in the embodiment of the present invention
As a example by piece is gray scale picture.
In order to preferably obtain discrete identifying code, the texture picture can be by the pixel groups of the discontinuous change of pixel value
Into.That is, the color value of each pixel of texture picture（Rgb value）Or gray value difference is larger.
Further, the histogram of texture picture can be bimodal distribution.By taking gray scale picture as an example, the Nogata of gray scale picture
Figure is the frequency for counting gray scale appearance, it is however generally that, transverse axis is gray scale, and the longitudinal axis is the normalization frequency.When gray scale picture
When histogram is bimodal distribution, it is possible to which the pixel value for ensureing the gray scale picture is non-continuously distributed, such as gray scale picture
When being made up of the pixel of black and white, in histogram, black picture element concentrates on the place that transverse axis is 0, and white pixel is concentrated
In the place that transverse axis is 255, transverse axis is（0,255）There is no pixel distribution in this interval.When the histogram of texture picture is double
When peak is distributed, the pixel value for also ensuring that texture picture is discrete.
On the other hand, texture picture includes a kind of texture or at least two texture.The embodiment of the present invention is with texture maps
As a example by piece is made up of black picture element and white pixel, referring to Fig. 2 and Fig. 3, sets forth texture picture and be made up of a kind of texture
Schematic diagram, and the schematic diagram that texture picture is made up of two kinds of textures.
S12’：Determine the position of identifying code；
Wherein, the position of identifying code can determine according to initial identifying code picture set in advance.
Initial identifying code picture includes identifying code and background.In correlation technique, it is also possible to checking is shown in background
Code, therefore, the idiographic flow for generating initial identifying code picture may refer to correlation technique, will not be repeated here.
Referring to Fig. 4, give a kind of schematic diagram of initial identifying code picture, the identifying code in the picture be 0-9 this 10
Individual numeral, background is white pattern.
The size of initial identifying code picture can be identical with the size of texture picture, for example, initial identifying code picture
With texture picture in transverse and longitudinal all pixels comprising same number.
S13’：In the position of the identifying code, the pixel value to the texture picture is modified, and is verified code figure
Piece.
Wherein, by taking the picture shown in initial identifying code picture is as Fig. 4 as an example, the color of identifying code is black, background
Color is white, and the gray value of black picture element is 0, and the gray value of white pixel is 255.
In texture picture, each pixel is corresponded to, whether the position is identifying code institute in searching initial identifying code picture
In position, if just the pixel value to the pixel in texture picture is modified.For example, a certain in for texture picture
Pixel A, it is assumed that the position coordinates of A is（X0, y0）, then see in initial identifying code picture（X0, y0）The picture of pixel at position
Element value, if the pixel value is 0, then show that the position is exactly the position of identifying code, that is, in texture picture pixel A position
Put is the position of identifying code, it is necessary to be modified to the pixel value of pixel A., whereas if in initial identifying code picture (x0,
Y0) pixel value of pixel is 255 at position, indicates that the position is not the position of identifying code, just not to the position in texture picture
The pixel value for putting pixel is modified.
In modification, pixel value is larger, then reduce a setting value, and pixel value is smaller, then increase a setting value.Example
Such as, texture picture is made up of black and white pattern, and the pixel value of the pixel A in texture picture needs modification, then when the pixel of pixel A
Be worth for 0 when, then increase a setting value, when pixel A pixel value be 255 when, then reduce a setting value.
Further, the setting value that diverse location is increasedd or decreased can be with setting value that is identical or different, being used during increase
Can be with identical or different with the setting value used when reducing.For example, when the pixel value of pixel A and pixel B is required for modification, it is assumed that
The pixel value of pixel A and pixel B is all 0, then the pixel value of pixel A can be increased into first and is worth, and by the pixel value of pixel B
Increase second value；Or, it is assumed that the pixel value of pixel A and pixel B is all 255, then the pixel value of pixel A can be reduced into the
One value, and the pixel value of pixel B is reduced into second value；Or, it is assumed that the pixel value of pixel A is 0, and the pixel value of pixel B is
255, then the pixel value of pixel A can be increased by first and be worth, and the pixel value of pixel B is reduced into second value.
Due at checking code position to texture picture in the pixel value of pixel be modified, it is possible to so that these positions
Put notable relative to the location comparison of unmodified pixel value（salient）, after human eye sees these notable positions, it is possible to recognize
Go out identifying code.
Fig. 5 and Fig. 6 sets forth two kinds of schematic diagrames of identifying code picture, and two kinds of identifying code pictures are all using above-mentioned
What flow was obtained after being modified to the pixel value of texture picture at checking code position, unlike, Fig. 5 is with texture picture bag
As a example by a kind of texture, Fig. 6 is so that texture picture includes two kinds of textures as an example.
Referring to Fig. 5 or Fig. 6, human eye can see identifying code, it is necessary to illustrate in the identifying code picture, due to
The reason such as display and anaclasis, human eye can see apparent identifying code in side.But, due to the identifying code figure
Piece is obtained after being modified to the pixel value of texture picture, and the gray value or rgb value of identifying code are no longer continuous, machines
Just it is difficult to, also, identifying code and smaller as the difference between the texture of background, this adds increased the difficulty of machine recognition
Degree.
The present embodiment is modified by the pixel value at the position of correspondence identifying code in texture picture, can be in texture
Occur pixel value changes in picture at the position of identifying code, human eye can capture this change, so as to identify identifying code, but
It is that because the pixel value of these positions is discontinuous, and with background difference less, machine is difficult to, so as to reduce machine knowledge
Other success rate, reduces the risk that identifying code is cracked, and improves internet security.
In another embodiment, processor runs and can hold by reading the executable program code stored in memory
The corresponding program of line program code, for performing following steps：
S71’：Generation texture picture and initial identifying code picture；
In the present embodiment, it is assumed that texture picture is the gray scale picture of black and white composition, identifying code in initial identifying code picture
It is black, background is white.
The step of specific generation texture picture and initial identifying code picture, may refer to embodiment illustrated in fig. 1, herein not
Repeat again.
S72’：A pixel is selected in texture picture, the position coordinates of the pixel is obtained, judged in initial identifying code
In picture, whether the gray value of the pixel on the position is 0, if so, performing S73 ', otherwise performs S76 '.
Assuming that the pixel selected in texture picture is pixel A, the position coordinates of the pixel is（x0,y0）, the step is
Judge in initial identifying code picture, position（x0,y0）Whether the gray value for locating pixel is 0, wherein, when gray value is 0
When, show the position for identifying code position, conversely, when gray value is 255, showing that the position is background position.
S73’：Whether the gray value for judging the position pixel in texture picture is 0, if so, performing S74 ', otherwise, is held
Row S75 '.
For example, whether the gray value for judging pixel A is 0.
S74’：The gray value of the position pixel is increased into by the first setting value in texture picture.Afterwards, S77 ' is performed.
For example, the gray value of pixel A is increased into the first setting value.
S75’：The gray value of the position pixel is reduced into the second setting value in texture picture.Afterwards, S77 ' is performed.
For example, the gray value of pixel A is reduced into the second setting value.
First setting value and the second setting value can be with identical or different.Also, the first setting value and the second setting value can be with
It is the value less than given threshold set in advance.
S76’：Keep that the gray value of position pixel is constant in texture picture.
For example, keeping the gray value of pixel A constant.
S77’：Judge with the presence or absence of non-selected pixel in texture picture, if so, repeating S72 ' and its follow-up step
Suddenly, otherwise, S78 ' is performed.
S78’：Flow terminates.
The present embodiment is modified by the correspondence identifying code position in texture picture to pixel value, can be caused
The pixel of these positions is more notable, realizes identification of the human eye to identifying code；In addition, modified by pixel value, can be with
The discontinuous change of pixel value is realized, increases machine recognition difficulty；Also, using the texture picture of black and white gray scale, one can be entered
Step ensures the discontinuous change of pixel value, further increases machine recognition difficulty；Furthermore, increasedd or decreased when pixel value is changed
Value be smaller value, the difference between identifying code and texture can be reduced, it is also possible to from another point of view increase machine recognition difficulty.
Therefore, the present embodiment can increase identification difficulty of the machine to identifying code, reduce machine recognition success rate, reduce identifying code by machine
The risk that device is cracked, it is ensured that internet security.
The embodiment of the present invention additionally provides a kind of client device, and the client device includes housing, processor, storage
Device, circuit board and power circuit, wherein, circuit board is placed in the interior volume that housing is surrounded, and processor and memory are arranged on
On circuit board；Power circuit, powers for each circuit or device for the client device；Memory is used to store executable
Program code；Processor is corresponding with executable program code to run by reading the executable program code of storage in memory
Program, for perform following steps：
S91’：Display identifying code picture, wherein, the identifying code picture is in the position of identifying code, to texture picture
What pixel value was obtained after modifying；
S92’：Receive user input；
S93’：The user input is verified according to the identifying code picture.
In one embodiment, the texture picture is made up of the pixel of the discontinuous change of pixel value.
In another embodiment, the histogram of the texture picture is bimodal distribution.
In another embodiment, the pixel value to texture picture is modified, including：
When the pixel value before a modification is more than setting value, reduce the pixel value；Or,
When the pixel value before a modification is less than setting value, increase the pixel value.
In another embodiment, when pixel value is reduced, the pixel value that diverse location reduces is different；Or,
When pixel value is increased, the increased pixel value of diverse location is different；Or,
When pixel value is reduced, the pixel value that diverse location reduces is identical, and when pixel value is increased, diverse location is increased
Pixel value is identical, and the pixel value for reducing is different from increased pixel value or identical.
In another embodiment, the texture picture includes a kind of texture or at least two texture.
In another embodiment, the texture picture is gray scale picture or colour picture.
In another embodiment, the position of the identifying code determines in the following way：
According to presetting, initial identifying code picture is generated, the initial identifying code picture includes identifying code and the back of the body
Scape；
According to the initial identifying code picture, the position of identifying code is determined.
In another embodiment, the size of the initial identifying code picture is identical with the size of the texture picture.
The identifying code picture used in the present embodiment can be obtained referring specifically to the generation method using above-mentioned identifying code picture
The identifying code picture for arriving, will not be repeated here.
The present embodiment is by using identifying code picture in checking, and the identifying code picture is in checking in texture picture
Code position carries out what is obtained after pixel value modification, it is possible to achieve the discontinuity of identifying code in the identifying code picture of use,
And background and identifying code difference are smaller, therefore, it can reduce machine recognition success rate, reduce the risk that identifying code is cracked, carry
Internet security high.
It should be noted that in the description of the invention, term " first ", " second " etc. are only used for describing purpose, without
It is understood that to indicate or implying relative importance.Additionally, in the description of the invention, unless otherwise indicated, the implication of " multiple "
It is two or more.
Any process described otherwise above or method description in flow chart or herein is construed as, and expression includes
It is one or more for realizing specific logical function or process the step of the module of code of executable instruction, fragment or portion
Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discussion suitable
Sequence, including function involved by basis by it is basic simultaneously in the way of or in the opposite order, carry out perform function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
It should be appreciated that each several part of the invention can be realized with hardware, software, firmware or combinations thereof.Above-mentioned
In implementation method, the software that multiple steps or method can in memory and by suitable instruction execution system be performed with storage
Or firmware is realized.If for example, realized with hardware, and in another embodiment, can be with well known in the art
Any one of row technology or their combination are realized：With the logic gates for realizing logic function to data-signal
Discrete logic, the application specific integrated circuit with suitable combinational logic gate circuit, programmable gate array（PGA）, scene
Programmable gate array（FPGA）Deng.
Those skilled in the art are appreciated that to realize all or part of step that above-described embodiment method is carried
The rapid hardware that can be by program to instruct correlation is completed, and described program can be stored in a kind of computer-readable storage medium
In matter, the program upon execution, including one or a combination set of the step of embodiment of the method.
Additionally, during each functional unit in each embodiment of the invention can be integrated in a processing module, it is also possible to
It is that unit is individually physically present, it is also possible to which two or more units are integrated in a module.Above-mentioned integrated mould
Block can both be realized in the form of hardware, it would however also be possible to employ the form of software function module is realized.The integrated module is such as
Fruit is to realize in the form of software function module and as independent production marketing or when using, it is also possible to which storage is in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only storage, disk or CD etc..
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.And, the specific features of description, structure, material or feature can be any
One or more embodiments or example in combine in an appropriate manner.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, is for only for ease of the description present invention and simplifies description, must rather than the device or element for indicating or imply meaning
With specific orientation, with specific azimuth configuration and operation, therefore must be not considered as limiting the invention.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integrally；Can be that machinery connects
Connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be in two elements
The connection in portion or two interaction relationships of element.For the ordinary skill in the art, can be according to specific feelings
Condition understands above-mentioned term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be with
It is the first and second feature directly contacts, or the first and second features are by intermediary mediate contact.And, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height less than second feature.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (28)
1. a kind of generation method of identifying code picture, it is characterised in that including：
Generation texture picture, the texture picture is made up of the pixel of the discontinuous change of pixel value；
Determine the position of identifying code；
In the position of the identifying code, the pixel value to the texture picture is modified, and is verified a yard picture；
The pixel value to the texture picture is modified, including：
When the pixel value before a modification is more than setting value, reduce the pixel value；Or,
When the pixel value before a modification is less than setting value, increase the pixel value.
2. method according to claim 1, it is characterised in that
The histogram of the texture picture is bimodal distribution.
3. method according to claim 1, it is characterised in that
When pixel value is reduced, the pixel value that diverse location reduces is different；Or,
When pixel value is increased, the increased pixel value of diverse location is different；Or,
When pixel value is reduced, the pixel value that diverse location reduces is identical, when pixel value is increased, the increased pixel of diverse location
Value is identical, and the pixel value for reducing is different from increased pixel value or identical.
4. the method according to any one of claims 1 to 3, it is characterised in that
The texture picture includes a kind of texture or at least two texture.
5. the method according to any one of claims 1 to 3, it is characterised in that
The texture picture is gray scale picture or colour picture.
6. the method according to any one of claims 1 to 3, it is characterised in that the position of the determination identifying code, including：
According to presetting, initial identifying code picture is generated, the initial identifying code picture includes identifying code and background；
According to the initial identifying code picture, the position of identifying code is determined.
7. method according to claim 6, it is characterised in that the size and the texture of the initial identifying code picture
The size of picture is identical.
8. a kind of generating means of identifying code picture, it is characterised in that including：
Generation module, for generating texture picture, the texture picture is made up of the pixel of the discontinuous change of pixel value；
Determining module, the position for determining identifying code；
Processing module, in the position of the identifying code, the pixel value to the texture picture to be modified, and is verified code
Picture；
The processing module specifically for：
When the pixel value before a modification is more than setting value, reduce the pixel value；Or,
When the pixel value before a modification is less than setting value, increase the pixel value.
9. device according to claim 8, it is characterised in that
The histogram of the texture picture of the generation module generation is bimodal distribution.
10. device according to claim 8, it is characterised in that the processing module specifically for：
When pixel value is reduced, the pixel value that diverse location reduces is different；Or,
When pixel value is increased, the increased pixel value of diverse location is different；Or,
When pixel value is reduced, the pixel value that diverse location reduces is identical, when pixel value is increased, the increased pixel of diverse location
Value is identical, and the pixel value for reducing is different from increased pixel value or identical.
11. device according to any one of claim 8 to 10, it is characterised in that
The texture picture of the generation module generation includes a kind of texture or at least two texture.
12. device according to any one of claim 8 to 10, it is characterised in that
The texture picture of the generation module generation is gray scale picture or colour picture.
13. device according to any one of claim 8 to 10, it is characterised in that the determining module specifically for：
According to presetting, initial identifying code picture is generated, the initial identifying code picture includes identifying code and background；
According to the initial identifying code picture, the position of identifying code is determined.
14. devices according to claim 13, the size of the described initial identifying code picture of the determining module generation
Size with the texture picture that the generation module is generated is identical.
A kind of 15. verification methods, it is characterised in that including：
Display identifying code picture, wherein, the identifying code picture is that, in the position of identifying code, the pixel value to texture picture is carried out
Obtained after modification, the texture picture is made up of the pixel of the discontinuous change of pixel value；
Receive user input；
The user input is verified according to the identifying code picture；
The pixel value to texture picture is modified, including：
When the pixel value before a modification is more than setting value, reduce the pixel value；Or,
When the pixel value before a modification is less than setting value, increase the pixel value.
16. methods according to claim 15, it is characterised in that
The histogram of the texture picture is bimodal distribution.
17. methods according to claim 15, it is characterised in that
When pixel value is reduced, the pixel value that diverse location reduces is different；Or,
When pixel value is increased, the increased pixel value of diverse location is different；Or,
When pixel value is reduced, the pixel value that diverse location reduces is identical, when pixel value is increased, the increased pixel of diverse location
Value is identical, and the pixel value for reducing is different from increased pixel value or identical.
18. method according to any one of claim 15 to 17, it is characterised in that
The texture picture includes a kind of texture or at least two texture.
19. method according to any one of claim 15 to 17, it is characterised in that
The texture picture is gray scale picture or colour picture.
20. method according to any one of claim 15 to 17, it is characterised in that the position of the identifying code is using as follows
Mode determines：
According to presetting, initial identifying code picture is generated, the initial identifying code picture includes identifying code and background；
According to the initial identifying code picture, the position of identifying code is determined.
21. methods according to claim 20, it is characterised in that the size and the line of the initial identifying code picture
The size for managing picture is identical.
A kind of 22. checking devices, it is characterised in that including：
Display module, for showing identifying code picture, wherein, the identifying code picture is in the position of identifying code, to texture maps
What the pixel value of piece was obtained after modifying, the texture picture is made up of the pixel of the discontinuous change of pixel value；
Receiver module, for receiving user input；
Authentication module, for being verified to the user input according to the identifying code picture；
The pixel value of the texture picture is changed in the following way：
When the pixel value before a modification is more than setting value, reduce the pixel value；Or,
When the pixel value before a modification is less than setting value, increase the pixel value.
23. devices according to claim 22, it is characterised in that
The histogram of the texture picture is bimodal distribution.
24. devices according to claim 22, it is characterised in that
When pixel value is reduced, the pixel value that diverse location reduces is different；Or,
When pixel value is increased, the increased pixel value of diverse location is different；Or,
When pixel value is reduced, the pixel value that diverse location reduces is identical, when pixel value is increased, the increased pixel of diverse location
Value is identical, and the pixel value for reducing is different from increased pixel value or identical.
25. device according to any one of claim 22 to 24, it is characterised in that
The texture picture includes a kind of texture or at least two texture.
26. device according to any one of claim 22 to 24, it is characterised in that
The texture picture is gray scale picture or colour picture.
27. device according to any one of claim 22 to 24, it is characterised in that the position of the identifying code is using as follows
Mode determines：
According to presetting, initial identifying code picture is generated, the initial identifying code picture includes identifying code and background；
According to the initial identifying code picture, the position of identifying code is determined.
28. devices according to claim 27, it is characterised in that the position of the identifying code determines in the following way：
According to presetting, initial identifying code picture is generated, the initial identifying code picture includes identifying code and background；
According to the initial identifying code picture, the position of identifying code is determined.
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| CN104158658B (en) * | 2014-07-18 | 2018-11-16 | 上海华泉信息科技有限公司 | A kind of video dynamic authentication code generating method |
| CN106920266B (en) * | 2015-12-28 | 2019-11-05 | 腾讯科技（深圳）有限公司 | The Background Generation Method and device of identifying code |
| CN106326778B (en) * | 2016-08-10 | 2017-10-17 | 广东欧珀移动通信有限公司 | A kind of picture method of calibration, server and terminal device |
| CN106295306B (en) * | 2016-08-15 | 2019-02-01 | 长春工程学院 | A kind of generation method of picture validation code |
| CN109033792A (en) * | 2018-02-14 | 2018-12-18 | 北京梆梆安全科技有限公司 | A kind of method, terminal and server for verifying user |
| CN108595933B (en) * | 2018-04-25 | 2019-12-17 | 维沃移动通信有限公司 | Verification information prompting method and mobile terminal |
| CN111382413A (en) * | 2018-12-28 | 2020-07-07 | 武汉极意网络科技有限公司 | Memory, and verification code implementation method, device and equipment based on reasoning |
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