CN103902875A - Verification code image generating method and device and verification method and device - Google Patents
Verification code image generating method and device and verification method and device Download PDFInfo
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- CN103902875A CN103902875A CN201410077527.4A CN201410077527A CN103902875A CN 103902875 A CN103902875 A CN 103902875A CN 201410077527 A CN201410077527 A CN 201410077527A CN 103902875 A CN103902875 A CN 103902875A
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- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
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Abstract
The invention provides a verification code image generating method and device and a verification method and device. The verification code image generating method and device and the verification method and device aim to lower the success rate of automatic identification of a machine. The verification code image generating method comprises the steps of generating a texture image, determining the position of a verification code, and modifying the pixel value of the texture image at the position of the verification code to obtain a verification code image. The verification code image generating method has the advantages that the success rate of automatic identification of a machine can be lowered, the risk that the verification code is cracked is lowered, and the network security is improved.
Description
Technical field
The present invention relates to network security technology field, relate in particular to a kind of generation method and apparatus and verification method and device of identifying code picture.
Background technology
In order to prevent that certain user from using the computer operations such as machine is automatically logined, released news, download, a lot of websites, in the time that user carries out correlation computations machine operation, all require user's input validation code.Identifying code normally shows with the form of a width picture, and user inputs according to the character showing in picture.
Along with the development of technology, machine can complete the identification to identifying code automatically by software, and continuous identifying code on the main dependency graph picture of automatic identification of machine needs identifying code itself and background to have larger contrast simultaneously.In order to reduce the success ratio of machine recognition, can carry out virtualization, distortion to identifying code, in background, add the processing such as noise, still, because the automatic recognition capability of machine is more and more stronger, still there is higher discrimination.
Summary of the invention
The present invention is intended to solve at least to a certain extent one of technical matters in correlation technique.
For this reason, one object of the present invention is to propose a kind of generation method of identifying code picture, and the method can reduce machine to the identifying code success ratio of identification automatically, reduces the risk that identifying code is cracked, and then improves internet security.
Another object of the present invention is to propose a kind of generating apparatus of identifying code picture.
Another object of the present invention is to propose a kind of verification method.
Another object of the present invention is to propose a kind of demo plant.
For achieving the above object, the generation method of the identifying code picture that first aspect present invention embodiment proposes, comprising: generate texture picture; Determine the position of identifying code; In the position of described identifying code, the pixel value of described texture picture is modified, be verified a yard picture.
The generation method of the identifying code picture that first aspect present invention embodiment proposes, pixel value by the position to corresponding identifying code in texture picture is modified, can in texture picture, occur that pixel value changes in the position of identifying code, human eye can capture this variation, thereby identify identifying code, but, because the pixel value of these positions is discontinuous, and little with background difference, machine is difficult to identification, thereby reduce machine recognition success ratio, reduce the risk that identifying code is cracked, improve internet security.
For achieving the above object, the generating apparatus of the identifying code that second aspect present invention embodiment proposes, comprising: generation module, for generating texture picture; Determination module, for determining the position of identifying code; Processing module, for the position at described identifying code, modifies to the pixel value of described texture picture, is verified a yard picture.
The generating apparatus of the identifying code that second aspect present invention embodiment proposes, pixel value by the position to corresponding identifying code in texture picture is modified, can in texture picture, occur that pixel value changes in the position of identifying code, human eye can capture this variation, thereby identify identifying code, but, because the pixel value of these positions is discontinuous, and little with background difference, machine is difficult to identification, thereby reduce machine recognition success ratio, reduce the risk that identifying code is cracked, improve internet security.
For achieving the above object, the verification method that third aspect present invention embodiment proposes, comprising: show identifying code picture, wherein, described identifying code picture is the position at identifying code, after the pixel value of texture picture is modified, obtains; Receive user's input; According to described identifying code picture, described user's input is verified.
The verification method that third aspect present invention embodiment proposes, by adopt identifying code picture in the time verifying, and this identifying code picture is to carry out obtaining after pixel value amendment in identifying code position in texture picture, can realize the uncontinuity of identifying code in the identifying code picture of employing, and background and identifying code difference are less, therefore, can reduce machine recognition success ratio, reduce the risk that identifying code is cracked, improve internet security.
For achieving the above object, the demo plant that fourth aspect present invention embodiment proposes, comprising: display module, and for showing identifying code picture, wherein, described identifying code picture is the position at identifying code, after the pixel value of texture picture is modified, obtains; Receiver module, for receiving user's input; Authentication module, for verifying described user's input according to described identifying code picture.
The demo plant that fourth aspect present invention embodiment proposes, by adopt identifying code picture in the time verifying, and this identifying code picture is to carry out obtaining after pixel value amendment in identifying code position in texture picture, can realize the uncontinuity of identifying code in the identifying code picture of employing, and background and identifying code difference are less, therefore, can reduce machine recognition success ratio, reduce the risk that identifying code is cracked, improve internet security.
For achieving the above object, the client device that fifth aspect present invention embodiment proposes, comprising: housing, processor, storer, circuit board and power circuit, wherein, circuit board is placed in the interior volume that housing surrounds, and processor and storer are arranged on circuit board; Power circuit, is used to each circuit or the device power supply of client device; Storer is for stores executable programs code; Processor moves the program corresponding with executable program code by the executable program code of storing in read memory, for carrying out following steps: generate texture picture; Determine the position of identifying code; In the position of described identifying code, the pixel value of described texture picture is modified, be verified a yard picture.
The client device that fifth aspect present invention embodiment proposes, pixel value by the position to corresponding identifying code in texture picture is modified, and can in texture picture, occur that pixel value changes in the position of identifying code, and human eye can capture this variation, thereby identify identifying code, but, because the pixel value of these positions is discontinuous, and little with background difference, machine is difficult to identification, thereby reduce machine recognition success ratio, reduce the risk that identifying code is cracked, improve internet security.
For achieving the above object, the client device that sixth aspect present invention embodiment proposes, comprising: housing, processor, storer, circuit board and power circuit, wherein, circuit board is placed in the interior volume that housing surrounds, and processor and storer are arranged on circuit board; Power circuit, is used to each circuit or the device power supply of client device; Storer is for stores executable programs code; Processor moves the program corresponding with executable program code by the executable program code of storing in read memory, for carrying out following steps: show identifying code picture, wherein, described identifying code picture is the position at identifying code, after the pixel value of texture picture is modified, obtains; Receive user's input; According to described identifying code picture, described user's input is verified.
The client device that sixth aspect present invention embodiment proposes, by adopt identifying code picture in the time verifying, and this identifying code picture is to carry out obtaining after pixel value amendment in identifying code position in texture picture, can realize the uncontinuity of identifying code in the identifying code picture of employing, and background and identifying code difference are less, therefore, can reduce machine recognition success ratio, reduce the risk that identifying code is cracked, improve internet security.
The aspect that the present invention is additional and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Brief description of the drawings
The present invention above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments obviously and easily and understand, wherein:
Fig. 1 is the schematic flow sheet of the generation method of the identifying code picture of one embodiment of the invention proposition;
Fig. 2 is the schematic diagram of a kind of texture picture in the embodiment of the present invention;
Fig. 3 is the schematic diagram of another kind of texture picture in the embodiment of the present invention;
Fig. 4 is the schematic diagram of a kind of initial identifying code picture in the embodiment of the present invention;
Fig. 5 is the schematic diagram of a kind of identifying code picture of generating in the embodiment of the present invention;
Fig. 6 is the schematic diagram of the another kind of identifying code picture that generates in the embodiment of the present invention;
Fig. 7 is the schematic flow sheet of the generation method of the identifying code picture of another embodiment of the present invention proposition;
Fig. 8 is the structural representation of the generating apparatus of the identifying code of another embodiment of the present invention proposition;
Fig. 9 is the schematic flow sheet of the verification method of another embodiment of the present invention proposition;
Figure 10 is the structural representation of the demo plant of another embodiment of the present invention proposition.
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, only for explaining the present invention, and can not be interpreted as limitation of the present invention.On the contrary, embodiments of the invention comprise all changes, amendment and the equivalent within the scope of spirit and the intension that falls into additional claims.
Fig. 1 is the schematic flow sheet of the generation method of the identifying code picture of one embodiment of the invention proposition, and the method comprises:
S11: generate texture picture.
Wherein, this texture picture can be colour picture, can be also gray scale picture.In the embodiment of the present invention, be that gray scale picture is as example taking texture picture.
In order better to obtain discrete identifying code, this texture picture can be made up of the pixel of the discontinuous variation of pixel value., the color value of the each pixel of texture picture (rgb value) or gray-scale value differ larger.
Further, the histogram of texture picture can be bimodal distribution.Taking gray scale picture as example, the histogram of gray scale picture is the frequency occurring for adding up gray scale, and generally speaking, transverse axis is gray scale, and the longitudinal axis is the normalization frequency.In the time that the histogram of gray scale picture is bimodal distribution, the pixel value that just can ensure this gray scale picture is non-continuous distribution, for example, when this gray scale picture is made up of the pixel of black and white, in histogram, it is 0 place that black picture element concentrates on transverse axis, it is 255 place that white pixel concentrates on transverse axis, and transverse axis is there is no pixel distribution in (0,255) this interval.In the time that the histogram of texture picture is bimodal distribution, the pixel value that also just can ensure texture picture is discrete.
On the other hand, texture picture comprises the texture of a kind of texture or at least two kinds.The embodiment of the present invention consists of example with texture picture by black picture element and white pixel, referring to Fig. 2 and Fig. 3, has provided respectively the schematic diagram that texture picture is made up of a kind of texture, and the schematic diagram that is made up of two kinds of textures of texture picture.
S12: the position of determining identifying code;
Wherein, the position of identifying code can be determined according to predefined initial identifying code picture.
Initial identifying code picture comprises identifying code and background.In correlation technique, can in background, demonstrate identifying code, therefore, the idiographic flow that generates initial identifying code picture can, referring to correlation technique, not repeat them here yet.
Referring to Fig. 4, provide a kind of schematic diagram of initial identifying code picture, the identifying code in this picture is these 10 numerals of 0-9, background is white pattern.
The size of initial identifying code picture can be identical with the size of texture picture, and for example, initial identifying code picture and texture picture all comprise the pixel of same number at transverse and longitudinal.
S13: in the position of described identifying code, the pixel value of described texture picture is modified, be verified a yard picture.
Wherein, taking initial identifying code picture as the picture shown in Fig. 4 is as example, the color of identifying code is black, and the color of background is white, and the gray-scale value of black picture element is 0, and the gray-scale value of white pixel is 255.
In texture picture, corresponding each pixel, whether be identifying code position, if just the pixel value of this pixel in texture picture is modified if searching this position in initial identifying code picture.For example, for a certain pixel A in texture picture, the position coordinates of supposing A is (x0, y0), see so the pixel value of (x0, y0) position pixel in initial identifying code picture, if this pixel value is 0, show that so this position is exactly the position of identifying code, namely in texture picture, the position of pixel A is the position of identifying code, need to modify to the pixel value of pixel A.Otherwise, if the pixel value of (x0, y0) position pixel is 255 in initial identifying code picture, just show that this position is not the position of identifying code, just the pixel value of this position pixel in texture picture is not modified.
In the time of amendment, pixel value is larger, reduces a setting value, and pixel value is less, increases a setting value.For example, texture picture is made up of black and white pattern, and the pixel value of the pixel A in texture picture needs amendment, in the time that the pixel value of pixel A is 0, increases a setting value so, in the time that the pixel value of pixel A is 255, reduces a setting value.
Further, diverse location increases or the setting value that reduces can be identical or different, and the setting value adopting when increase and the setting value adopting while reducing can be identical or different.For example, when the pixel value of pixel A and pixel B all needs to revise, the pixel value of supposing pixel A and pixel B is all 0, the pixel value of pixel A can be increased so to the first value, and the pixel value of pixel B is increased to the second value; Or the pixel value of supposing pixel A and pixel B is all 255, the pixel value of pixel A can be reduced to the first value so, and the pixel value of pixel B is reduced to the second value; Or the pixel value of supposing pixel A is 0, the pixel value of pixel B is 255, the pixel value of pixel A can be increased so to the first value, and the pixel value of pixel B is reduced to the second value.
Due to identifying code position to texture picture in the pixel value of pixel revise, just can make location comparison significantly (salient) of these positions with respect to unmodified pixel value, human eye is seen behind these remarkable positions, just can be identified identifying code.
Fig. 5 and Fig. 6 have provided respectively the schematic diagram of two kinds of identifying code pictures, these two kinds of identifying code pictures are all to adopt above-mentioned flow process to obtain after modifying to the pixel value of texture picture in identifying code position, different is, Fig. 5 comprises a kind of texture as example taking texture picture, and Fig. 6 comprises two kinds of textures as example taking texture picture.
Referring to Fig. 5 or Fig. 6, human eye can be seen identifying code in this identifying code picture, it should be noted that, due to the reason such as display and anaclasis, human eye can be seen in side identifying code more clearly.But because this identifying code picture is to obtain after the pixel value of texture picture is modified, the gray-scale value of identifying code or rgb value are no longer continuous, machine is just difficult to identification, and the difference between identifying code and texture is as a setting less, this has just increased the difficulty of machine recognition.
The present embodiment is modified by the pixel value of the position to corresponding identifying code in texture picture, can in texture picture, occur that pixel value changes in the position of identifying code, human eye can capture this variation, thereby identifies identifying code, still, because the pixel value of these positions is discontinuous, and little with background difference, machine is difficult to identification, thereby reduce machine recognition success ratio, reduce the risk that identifying code is cracked, improve internet security.
Fig. 7 is the schematic flow sheet of the generation method of the identifying code picture of another embodiment of the present invention proposition, and the present embodiment provides a kind of specific implementation flow process in conjunction with an object lesson, and the method comprises:
S71: generate texture picture and initial identifying code picture;
In the present embodiment, suppose that texture picture is the gray scale picture of black and white composition, in initial identifying code picture, identifying code is black, and background is white.
The concrete step that generates texture picture and initial identifying code picture can embodiment shown in Figure 1, does not repeat them here.
S72: select a pixel in texture picture, obtain the position coordinates of this pixel, judge in initial identifying code picture, whether the gray-scale value of this locational pixel is 0, if so, carries out S73, otherwise carry out S76.
Suppose that the pixel of selecting is pixel A in texture picture, the position coordinates of this pixel is (x0, y0), and this step is will judge in initial identifying code picture, position (x0, whether the gray-scale value of y0) locating pixel is 0, wherein, and in the time that gray-scale value is 0, show that this position is identifying code position, otherwise, in the time that gray-scale value is 255, show that this position is background position.
S73: whether the gray-scale value that judges this position pixel in texture picture is 0, if so, carries out S74, otherwise, S75 carried out.
Whether the gray-scale value that for example, judges pixel A is 0.
S74: in texture picture, the gray-scale value of this position pixel is increased to the first setting value.Afterwards, carry out S77.
For example, the gray-scale value of pixel A is increased to the first setting value.
S75: in texture picture, the gray-scale value of this position pixel is reduced to the second setting value.Afterwards, carry out S77.
For example, the gray-scale value of pixel A is reduced to the second setting value.
The first setting value and the second setting value can be identical or different.And the first setting value and the second setting value can be the predefined value that is less than setting threshold.
S76: keep constant the gray-scale value of position pixel in texture picture.
For example, keep the gray-scale value of pixel A constant.
S77: judge and in texture picture, whether have unselected pixel, if so, repeat S72 and subsequent step thereof, otherwise, carry out S78.
S78: flow process finishes.
The present embodiment, by corresponding identifying code position in texture picture, is modified to pixel value, can make the pixel of these positions comparatively remarkable, realizes the identification of human eye to identifying code; In addition, by pixel value is modified, can realize the discontinuous variation of pixel value, increase machine recognition difficulty; And the texture picture of employing black and white gray scale, can further ensure the discontinuous variation of pixel value, further increases machine recognition difficulty; Moreover, increase when pixel value in amendment or the value that reduces is smaller value, can reduce the difference between identifying code and texture, also can increase from another point of view machine recognition difficulty.Therefore, the present embodiment can increase the identification difficulty of machine to identifying code, reduces machine recognition success ratio, reduces the risk that identifying code is cracked by machine, ensures internet security.
Fig. 8 is the structural representation of the generating apparatus of the identifying code of another embodiment of the present invention proposition, and this device 80 comprises generation module 81, determination module 82 and processing module 83.
In an embodiment, the described texture picture that described generation module generates is made up of the pixel of the discontinuous variation of pixel value.
In another embodiment, the histogram of the described texture picture that described generation module generates is bimodal distribution.
In another embodiment, described processing module specifically for:
When described pixel value before amendment is greater than setting value, reduce described pixel value; Or,
When described pixel value before amendment is less than setting value, increase described pixel value.
In another embodiment, described processing module specifically for:
In the time reducing pixel value, the pixel value difference that diverse location reduces; Or,
In the time increasing pixel value, the pixel value difference that diverse location increases; Or,
In the time reducing pixel value, the pixel value that diverse location reduces is identical, and in the time increasing pixel value, the pixel value that diverse location increases is identical, and the pixel value reducing is different or identical from the pixel value of increase.
In another embodiment, the described texture picture that described generation module generates comprises the texture of a kind of texture or at least two kinds.
In another embodiment, the described texture picture that described generation module generates is gray scale picture or colour picture.
In another embodiment, described determination module specifically for:
According to presetting, generate initial identifying code picture, described initial identifying code picture comprises identifying code and background;
According to described initial identifying code picture, determine the position of identifying code.
In another embodiment, described determination module specifically for:
According to presetting, generate initial identifying code picture, described initial identifying code picture comprises identifying code and background;
According to described initial identifying code picture, determine the position of identifying code.
The concrete treatment scheme of the device of the present embodiment can, referring to the embodiment of the generation method of above-mentioned identifying code picture, not repeat them here.
The present embodiment is modified by the pixel value of the position to corresponding identifying code in texture picture, can in texture picture, occur that pixel value changes in the position of identifying code, human eye can capture this variation, thereby identifies identifying code, still, because the pixel value of these positions is discontinuous, and little with background difference, machine is difficult to identification, thereby reduce machine recognition success ratio, reduce the risk that identifying code is cracked, improve internet security.
Fig. 9 is the schematic flow sheet of the verification method of another embodiment of the present invention proposition, and the method comprises:
S91: show identifying code picture, wherein, described identifying code picture is the position at identifying code, obtains after the pixel value of texture picture is modified;
S92: receive user's input;
S93: described user's input is verified according to described identifying code picture.
In an embodiment, described texture picture is made up of the pixel of the discontinuous variation of pixel value.
In another embodiment, the histogram of described texture picture is bimodal distribution.
In another embodiment, the described pixel value to texture picture is modified, and comprising:
When described pixel value before amendment is greater than setting value, reduce described pixel value; Or,
When described pixel value before amendment is less than setting value, increase described pixel value.
In another embodiment, in the time reducing pixel value, the pixel value difference that diverse location reduces; Or,
In the time increasing pixel value, the pixel value difference that diverse location increases; Or,
In the time reducing pixel value, the pixel value that diverse location reduces is identical, and in the time increasing pixel value, the pixel value that diverse location increases is identical, and the pixel value reducing is different or identical from the pixel value of increase.
In another embodiment, described texture picture comprises the texture of a kind of texture or at least two kinds.
In another embodiment, described texture picture is gray scale picture or colour picture.
In another embodiment, the position of described identifying code is determined in the following way:
According to presetting, generate initial identifying code picture, described initial identifying code picture comprises identifying code and background;
According to described initial identifying code picture, determine the position of identifying code.
In another embodiment, the described initial size of identifying code picture is identical with the size of described texture picture.
The identifying code picture adopting in the present embodiment can, specifically referring to the identifying code picture that adopts the generation method of above-mentioned identifying code picture to obtain, not repeat them here.
The present embodiment by adopting identifying code picture in the time verifying, and this identifying code picture is to carry out obtaining after pixel value amendment in identifying code position in texture picture, can realize the uncontinuity of identifying code in the identifying code picture of employing, and background and identifying code difference are less, therefore, can reduce machine recognition success ratio, reduce the risk that identifying code is cracked, improve internet security.
Figure 10 is the structural representation of the demo plant of another embodiment of the present invention proposition, and this device 100 comprises display module 101, receiver module 102 and authentication module 103.
In an embodiment, described texture picture is made up of the pixel of the discontinuous variation of pixel value.
In another embodiment, the histogram of described texture picture is bimodal distribution.
In another embodiment, the pixel value of described texture picture is revised in the following way:
When described pixel value before amendment is greater than setting value, reduce described pixel value; Or,
When described pixel value before amendment is less than setting value, increase described pixel value.
In another embodiment, in the time reducing pixel value, the pixel value difference that diverse location reduces; Or,
In the time increasing pixel value, the pixel value difference that diverse location increases; Or,
In the time reducing pixel value, the pixel value that diverse location reduces is identical, and in the time increasing pixel value, the pixel value that diverse location increases is identical, and the pixel value reducing is different or identical from the pixel value of increase.
In another embodiment, described texture picture comprises the texture of a kind of texture or at least two kinds.
In another embodiment, described texture picture is gray scale picture or colour picture.
In another embodiment, the position of described identifying code is determined in the following way:
According to presetting, generate initial identifying code picture, described initial identifying code picture comprises identifying code and background;
According to described initial identifying code picture, determine the position of identifying code.
In another embodiment, the described initial size of identifying code picture is identical with the size of described texture picture.
The identifying code picture adopting in the present embodiment can, specifically referring to the identifying code picture that adopts the generation method of above-mentioned identifying code picture to obtain, not repeat them here.
The present embodiment by adopting identifying code picture in the time verifying, and this identifying code picture is to carry out obtaining after pixel value amendment in identifying code position in texture picture, can realize the uncontinuity of identifying code in the identifying code picture of employing, and background and identifying code difference are less, therefore, can reduce machine recognition success ratio, reduce the risk that identifying code is cracked, improve internet security.
The embodiment of the present invention also provides a kind of client device, and this client device comprises housing, processor, storer, circuit board and power circuit, and wherein, circuit board is placed in the interior volume that housing surrounds, and processor and storer are arranged on circuit board; Power circuit, is used to each circuit or the device power supply of this client device; Storer is for stores executable programs code; Processor moves the program corresponding with executable program code by the executable program code of storing in read memory, for carrying out following steps:
S11 ': generate texture picture.
Wherein, this texture picture can be colour picture, can be also gray scale picture.In the embodiment of the present invention, be that gray scale picture is as example taking texture picture.
In order better to obtain discrete identifying code, this texture picture can be made up of the pixel of the discontinuous variation of pixel value., the color value of the each pixel of texture picture (rgb value) or gray-scale value differ larger.
Further, the histogram of texture picture can be bimodal distribution.Taking gray scale picture as example, the histogram of gray scale picture is the frequency occurring for adding up gray scale, and generally speaking, transverse axis is gray scale, and the longitudinal axis is the normalization frequency.In the time that the histogram of gray scale picture is bimodal distribution, the pixel value that just can ensure this gray scale picture is non-continuous distribution, for example, when this gray scale picture is made up of the pixel of black and white, in histogram, it is 0 place that black picture element concentrates on transverse axis, it is 255 place that white pixel concentrates on transverse axis, and transverse axis is there is no pixel distribution in (0,255) this interval.In the time that the histogram of texture picture is bimodal distribution, the pixel value that also just can ensure texture picture is discrete.
On the other hand, texture picture comprises the texture of a kind of texture or at least two kinds.The embodiment of the present invention consists of example with texture picture by black picture element and white pixel, referring to Fig. 2 and Fig. 3, has provided respectively the schematic diagram that texture picture is made up of a kind of texture, and the schematic diagram that is made up of two kinds of textures of texture picture.
S12 ': the position of determining identifying code;
Wherein, the position of identifying code can be determined according to predefined initial identifying code picture.
Initial identifying code picture comprises identifying code and background.In correlation technique, can in background, demonstrate identifying code, therefore, the idiographic flow that generates initial identifying code picture can, referring to correlation technique, not repeat them here yet.
Referring to Fig. 4, provide a kind of schematic diagram of initial identifying code picture, the identifying code in this picture is these 10 numerals of 0-9, background is white pattern.
The size of initial identifying code picture can be identical with the size of texture picture, and for example, initial identifying code picture and texture picture all comprise the pixel of same number at transverse and longitudinal.
S13 ': in the position of described identifying code, the pixel value of described texture picture is modified, be verified a yard picture.
Wherein, taking initial identifying code picture as the picture shown in Fig. 4 is as example, the color of identifying code is black, and the color of background is white, and the gray-scale value of black picture element is 0, and the gray-scale value of white pixel is 255.
In texture picture, corresponding each pixel, whether be identifying code position, if just the pixel value of this pixel in texture picture is modified if searching this position in initial identifying code picture.For example, for a certain pixel A in texture picture, the position coordinates of supposing A is (x0, y0), see so the pixel value of (x0, y0) position pixel in initial identifying code picture, if this pixel value is 0, show that so this position is exactly the position of identifying code, namely in texture picture, the position of pixel A is the position of identifying code, need to modify to the pixel value of pixel A.Otherwise, if the pixel value of (x0, y0) position pixel is 255 in initial identifying code picture, just show that this position is not the position of identifying code, just the pixel value of this position pixel in texture picture is not modified.
In the time of amendment, pixel value is larger, reduces a setting value, and pixel value is less, increases a setting value.For example, texture picture is made up of black and white pattern, and the pixel value of the pixel A in texture picture needs amendment, in the time that the pixel value of pixel A is 0, increases a setting value so, in the time that the pixel value of pixel A is 255, reduces a setting value.
Further, diverse location increases or the setting value that reduces can be identical or different, and the setting value adopting when increase and the setting value adopting while reducing can be identical or different.For example, when the pixel value of pixel A and pixel B all needs to revise, the pixel value of supposing pixel A and pixel B is all 0, the pixel value of pixel A can be increased so to the first value, and the pixel value of pixel B is increased to the second value; Or the pixel value of supposing pixel A and pixel B is all 255, the pixel value of pixel A can be reduced to the first value so, and the pixel value of pixel B is reduced to the second value; Or the pixel value of supposing pixel A is 0, the pixel value of pixel B is 255, the pixel value of pixel A can be increased so to the first value, and the pixel value of pixel B is reduced to the second value.
Due to identifying code position to texture picture in the pixel value of pixel revise, just can make location comparison significantly (salient) of these positions with respect to unmodified pixel value, human eye is seen behind these remarkable positions, just can be identified identifying code.
Fig. 5 and Fig. 6 have provided respectively the schematic diagram of two kinds of identifying code pictures, these two kinds of identifying code pictures are all to adopt above-mentioned flow process to obtain after modifying to the pixel value of texture picture in identifying code position, different is, Fig. 5 comprises a kind of texture as example taking texture picture, and Fig. 6 comprises two kinds of textures as example taking texture picture.
Referring to Fig. 5 or Fig. 6, human eye can be seen identifying code in this identifying code picture, it should be noted that, due to the reason such as display and anaclasis, human eye can be seen in side identifying code more clearly.But because this identifying code picture is to obtain after the pixel value of texture picture is modified, the gray-scale value of identifying code or rgb value are no longer continuous, machine is just difficult to identification, and the difference between identifying code and texture is as a setting less, this has just increased the difficulty of machine recognition.
The present embodiment is modified by the pixel value of the position to corresponding identifying code in texture picture, can in texture picture, occur that pixel value changes in the position of identifying code, human eye can capture this variation, thereby identifies identifying code, still, because the pixel value of these positions is discontinuous, and little with background difference, machine is difficult to identification, thereby reduce machine recognition success ratio, reduce the risk that identifying code is cracked, improve internet security.
In another embodiment, processor moves the program corresponding with executable program code by the executable program code of storing in read memory, for carrying out following steps:
S71 ': generate texture picture and initial identifying code picture;
In the present embodiment, suppose that texture picture is the gray scale picture of black and white composition, in initial identifying code picture, identifying code is black, and background is white.
The concrete step that generates texture picture and initial identifying code picture can embodiment shown in Figure 1, does not repeat them here.
S72 ': select a pixel in texture picture, obtain the position coordinates of this pixel, judge in initial identifying code picture, whether the gray-scale value of this locational pixel is 0, if so, carries out S73 ', otherwise carry out S76 '.
Suppose that the pixel of selecting is pixel A in texture picture, the position coordinates of this pixel is (x0, y0), and this step is will judge in initial identifying code picture, position (x0, whether the gray-scale value of y0) locating pixel is 0, wherein, and in the time that gray-scale value is 0, show that this position is identifying code position, otherwise, in the time that gray-scale value is 255, show that this position is background position.
S73 ': whether the gray-scale value that judges this position pixel in texture picture is 0, if so, carries out S74 ', otherwise, S75 ' carried out.
Whether the gray-scale value that for example, judges pixel A is 0.
S74 ': in texture picture, the gray-scale value of this position pixel is increased to the first setting value.Afterwards, carry out S77 '.
For example, the gray-scale value of pixel A is increased to the first setting value.
S75 ': in texture picture, the gray-scale value of this position pixel is reduced to the second setting value.Afterwards, carry out S77 '.
For example, the gray-scale value of pixel A is reduced to the second setting value.
The first setting value and the second setting value can be identical or different.And the first setting value and the second setting value can be the predefined value that is less than setting threshold.
S76 ': keep constant the gray-scale value of position pixel in texture picture.
For example, keep the gray-scale value of pixel A constant.
S77 ': judge and in texture picture, whether have unselected pixel, if so, repeat S72 ' and subsequent step thereof, otherwise, carry out S78 '.
S78 ': flow process finishes.
The present embodiment, by corresponding identifying code position in texture picture, is modified to pixel value, can make the pixel of these positions comparatively remarkable, realizes the identification of human eye to identifying code; In addition, by pixel value is modified, can realize the discontinuous variation of pixel value, increase machine recognition difficulty; And the texture picture of employing black and white gray scale, can further ensure the discontinuous variation of pixel value, further increases machine recognition difficulty; Moreover, increase when pixel value in amendment or the value that reduces is smaller value, can reduce the difference between identifying code and texture, also can increase from another point of view machine recognition difficulty.Therefore, the present embodiment can increase the identification difficulty of machine to identifying code, reduces machine recognition success ratio, reduces the risk that identifying code is cracked by machine, ensures internet security.
The embodiment of the present invention also provides a kind of client device, and this client device comprises housing, processor, storer, circuit board and power circuit, and wherein, circuit board is placed in the interior volume that housing surrounds, and processor and storer are arranged on circuit board; Power circuit, is used to each circuit or the device power supply of this client device; Storer is for stores executable programs code; Processor moves the program corresponding with executable program code by the executable program code of storing in read memory, for carrying out following steps:
S91 ': show identifying code picture, wherein, described identifying code picture is the position at identifying code, obtains after the pixel value of texture picture is modified;
S92 ': receive user's input;
S93 ': described user's input is verified according to described identifying code picture.
In an embodiment, described texture picture is made up of the pixel of the discontinuous variation of pixel value.
In another embodiment, the histogram of described texture picture is bimodal distribution.
In another embodiment, the described pixel value to texture picture is modified, and comprising:
When described pixel value before amendment is greater than setting value, reduce described pixel value; Or,
When described pixel value before amendment is less than setting value, increase described pixel value.
In another embodiment, in the time reducing pixel value, the pixel value difference that diverse location reduces; Or,
In the time increasing pixel value, the pixel value difference that diverse location increases; Or,
In the time reducing pixel value, the pixel value that diverse location reduces is identical, and in the time increasing pixel value, the pixel value that diverse location increases is identical, and the pixel value reducing is different or identical from the pixel value of increase.
In another embodiment, described texture picture comprises the texture of a kind of texture or at least two kinds.
In another embodiment, described texture picture is gray scale picture or colour picture.
In another embodiment, the position of described identifying code is determined in the following way:
According to presetting, generate initial identifying code picture, described initial identifying code picture comprises identifying code and background;
According to described initial identifying code picture, determine the position of identifying code.
In another embodiment, the described initial size of identifying code picture is identical with the size of described texture picture.
The identifying code picture adopting in the present embodiment can, specifically referring to the identifying code picture that adopts the generation method of above-mentioned identifying code picture to obtain, not repeat them here.
The present embodiment by adopting identifying code picture in the time verifying, and this identifying code picture is to carry out obtaining after pixel value amendment in identifying code position in texture picture, can realize the uncontinuity of identifying code in the identifying code picture of employing, and background and identifying code difference are less, therefore, can reduce machine recognition success ratio, reduce the risk that identifying code is cracked, improve internet security.
It should be noted that, in description of the invention, term " first ", " second " etc. are only for describing object, and can not be interpreted as instruction or hint relative importance.In addition,, in description of the invention, except as otherwise noted, the implication of " multiple " is two or more.
Any process of otherwise describing in process flow diagram or at this or method are described and can be understood to, represent to comprise that one or more is for realizing module, fragment or the part of code of executable instruction of step of specific logical function or process, and the scope of the preferred embodiment of the present invention comprises other realization, wherein can be not according to order shown or that discuss, comprise according to related function by the mode of basic while or by contrary order, carry out function, this should be understood by embodiments of the invention person of ordinary skill in the field.
Should be appreciated that each several part of the present invention can realize with hardware, software, firmware or their combination.In the above-described embodiment, multiple steps or method can realize with being stored in software or the firmware carried out in storer and by suitable instruction execution system.For example, if realized with hardware, the same in another embodiment, can realize by any one in following technology well known in the art or their combination: there is the discrete logic for data-signal being realized to the logic gates of logic function, there is the special IC of suitable combinational logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc.
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries is can carry out the hardware that instruction is relevant by program to complete, described program can be stored in a kind of computer-readable recording medium, this program, in the time carrying out, comprises step of embodiment of the method one or a combination set of.
In addition, the each functional unit in each embodiment of the present invention can be integrated in a processing module, can be also that the independent physics of unit exists, and also can be integrated in a module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, and also can adopt the form of software function module to realize.If described integrated module realizes and during as production marketing independently or use, also can be stored in a computer read/write memory medium using the form of software function module.
The above-mentioned storage medium of mentioning can be ROM (read-only memory), disk or CD etc.
In the description of this instructions, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
In description of the invention, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axially ", " radially ", orientation or the position relationship of instructions such as " circumferentially " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of device or the element of instruction or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
In the present invention, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or integral; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, can understand as the case may be above-mentioned term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, First Characteristic Second Characteristic " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary indirect contact.And, First Characteristic Second Characteristic " on ", " top " and " above " but First Characteristic directly over Second Characteristic or oblique upper, or only represent that First Characteristic level height is higher than Second Characteristic.First Characteristic Second Characteristic " under ", " below " and " below " can be First Characteristic under Second Characteristic or tiltedly, or only represent that First Characteristic level height is less than Second Characteristic.
Although illustrated and described embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, amendment, replacement and modification.
Claims (36)
1. a generation method for identifying code picture, is characterized in that, comprising:
Generate texture picture;
Determine the position of identifying code;
In the position of described identifying code, the pixel value of described texture picture is modified, be verified a yard picture.
2. method according to claim 1, is characterized in that,
Described texture picture is made up of the pixel of the discontinuous variation of pixel value.
3. method according to claim 2, is characterized in that,
The histogram of described texture picture is bimodal distribution.
4. according to the method described in claims 1 to 3 any one, it is characterized in that, the described pixel value to described texture picture is modified, and comprising:
When described pixel value before amendment is greater than setting value, reduce described pixel value; Or,
When described pixel value before amendment is less than setting value, increase described pixel value.
5. method according to claim 4, is characterized in that,
In the time reducing pixel value, the pixel value difference that diverse location reduces; Or,
In the time increasing pixel value, the pixel value difference that diverse location increases; Or,
In the time reducing pixel value, the pixel value that diverse location reduces is identical, and in the time increasing pixel value, the pixel value that diverse location increases is identical, and the pixel value reducing is different or identical from the pixel value of increase.
6. according to the method described in claims 1 to 3 any one, it is characterized in that,
Described texture picture comprises the texture of a kind of texture or at least two kinds.
7. according to the method described in claims 1 to 3 any one, it is characterized in that,
Described texture picture is gray scale picture or colour picture.
8. according to the method described in claims 1 to 3 any one, it is characterized in that, the position of described definite identifying code, comprising:
According to presetting, generate initial identifying code picture, described initial identifying code picture comprises identifying code and background;
According to described initial identifying code picture, determine the position of identifying code.
9. method according to claim 8, is characterized in that, the described initial size of identifying code picture is identical with the size of described texture picture.
10. a generating apparatus for identifying code picture, is characterized in that, comprising:
Generation module, for generating texture picture;
Determination module, for determining the position of identifying code;
Processing module, for the position at described identifying code, modifies to the pixel value of described texture picture, is verified a yard picture.
11. devices according to claim 10, is characterized in that,
The described texture picture that described generation module generates is made up of the pixel of the discontinuous variation of pixel value.
12. devices according to claim 11, is characterized in that,
The histogram of the described texture picture that described generation module generates is bimodal distribution.
13. according to claim 10 to the device described in 12 any one, it is characterized in that, described processing module specifically for:
When described pixel value before amendment is greater than setting value, reduce described pixel value; Or,
When described pixel value before amendment is less than setting value, increase described pixel value.
14. devices according to claim 13, is characterized in that, described processing module specifically for:
In the time reducing pixel value, the pixel value difference that diverse location reduces; Or,
In the time increasing pixel value, the pixel value difference that diverse location increases; Or,
In the time reducing pixel value, the pixel value that diverse location reduces is identical, and in the time increasing pixel value, the pixel value that diverse location increases is identical, and the pixel value reducing is different or identical from the pixel value of increase.
15. according to claim 10 to the device described in 12 any one, it is characterized in that,
The described texture picture that described generation module generates comprises the texture of a kind of texture or at least two kinds.
16. according to claim 10 to the device described in 12 any one, it is characterized in that,
The described texture picture that described generation module generates is gray scale picture or colour picture.
17. according to claim 10 to the device described in 12 any one, it is characterized in that, described determination module specifically for:
According to presetting, generate initial identifying code picture, described initial identifying code picture comprises identifying code and background;
According to described initial identifying code picture, determine the position of identifying code.
18. devices according to claim 17, the size of the described initial identifying code picture that described determination module generates is identical with the size of the described texture picture that described generation module generates.
19. 1 kinds of verification methods, is characterized in that, comprising:
Show identifying code picture, wherein, described identifying code picture is the position at identifying code, after the pixel value of texture picture is modified, obtains;
Receive user's input;
According to described identifying code picture, described user's input is verified.
20. methods according to claim 19, is characterized in that,
Described texture picture is made up of the pixel of the discontinuous variation of pixel value.
21. methods according to claim 20, is characterized in that,
The histogram of described texture picture is bimodal distribution.
22. according to claim 19 to the method described in 21 any one, it is characterized in that, the described pixel value to texture picture is modified, and comprising:
When described pixel value before amendment is greater than setting value, reduce described pixel value; Or,
When described pixel value before amendment is less than setting value, increase described pixel value.
23. methods according to claim 22, is characterized in that,
In the time reducing pixel value, the pixel value difference that diverse location reduces; Or,
In the time increasing pixel value, the pixel value difference that diverse location increases; Or,
In the time reducing pixel value, the pixel value that diverse location reduces is identical, and in the time increasing pixel value, the pixel value that diverse location increases is identical, and the pixel value reducing is different or identical from the pixel value of increase.
24. according to claim 19 to the method described in 21 any one, it is characterized in that,
Described texture picture comprises the texture of a kind of texture or at least two kinds.
25. according to claim 19 to the method described in 21 any one, it is characterized in that,
Described texture picture is gray scale picture or colour picture.
26. according to claim 19 to the method described in 21 any one, it is characterized in that, the position of described identifying code is determined in the following way:
According to presetting, generate initial identifying code picture, described initial identifying code picture comprises identifying code and background;
According to described initial identifying code picture, determine the position of identifying code.
27. methods according to claim 26, is characterized in that, the described initial size of identifying code picture is identical with the size of described texture picture.
28. 1 kinds of demo plants, is characterized in that, comprising:
Display module, for showing identifying code picture, wherein, described identifying code picture is the position at identifying code, after the pixel value of texture picture is modified, obtains;
Receiver module, for receiving user's input;
Authentication module, for verifying described user's input according to described identifying code picture.
29. devices according to claim 28, is characterized in that,
Described texture picture is made up of the pixel of the discontinuous variation of pixel value.
30. devices according to claim 29, is characterized in that,
The histogram of described texture picture is bimodal distribution.
31. according to the device described in claim 28 to 30 any one, it is characterized in that, the pixel value of described texture picture is revised in the following way:
When described pixel value before amendment is greater than setting value, reduce described pixel value; Or,
When described pixel value before amendment is less than setting value, increase described pixel value.
32. devices according to claim 31, is characterized in that,
In the time reducing pixel value, the pixel value difference that diverse location reduces; Or,
In the time increasing pixel value, the pixel value difference that diverse location increases; Or,
In the time reducing pixel value, the pixel value that diverse location reduces is identical, and in the time increasing pixel value, the pixel value that diverse location increases is identical, and the pixel value reducing is different or identical from the pixel value of increase.
33. according to the device described in claim 28 to 30 any one, it is characterized in that,
Described texture picture comprises the texture of a kind of texture or at least two kinds.
34. according to the device described in claim 28 to 30 any one, it is characterized in that,
Described texture picture is gray scale picture or colour picture.
35. according to the device described in claim 28 to 30 any one, it is characterized in that, the position of described identifying code is determined in the following way:
According to presetting, generate initial identifying code picture, described initial identifying code picture comprises identifying code and background;
According to described initial identifying code picture, determine the position of identifying code.
36. devices according to claim 35, is characterized in that, the position of described identifying code is determined in the following way:
According to presetting, generate initial identifying code picture, described initial identifying code picture comprises identifying code and background;
According to described initial identifying code picture, determine the position of identifying code.
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