CN102298763A - Method and system for generating picture identifying code - Google Patents
Method and system for generating picture identifying code Download PDFInfo
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- CN102298763A CN102298763A CN2010102194037A CN201010219403A CN102298763A CN 102298763 A CN102298763 A CN 102298763A CN 2010102194037 A CN2010102194037 A CN 2010102194037A CN 201010219403 A CN201010219403 A CN 201010219403A CN 102298763 A CN102298763 A CN 102298763A
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Abstract
The invention is applicable to the technical field of the generation of identifying codes, and provides a method and a system for generating a picture identifying code. The method comprises the following steps of: randomly generating an identifying code character; randomly eliminate the partial strokes of the identifying code character; and processing the identifying code character the strokes of which are partially are eliminated into an identifying code picture a picture format. The method further comprises the following steps of: randomly generating the identifying code character; dividing an area as the background area of the identifying code character; filling the background area and the identifying code character by adopting different ways; and processing the background area and the identifying code character which are filled into the identifying code picture in the picture format. According to the invention, the difficulty of identifying the identifying code which is generated by the method for generating the picture identifying code by human eyes is reduced while the identification difficulty of a machine is increased.
Description
Technical field
The invention belongs to identifying code generation technique field, relate in particular to a kind of generation method and system of picture validation code.
Background technology
Universal day by day along with computing machine and computer network, the internet has been deep into the every field of people's work, studying and living.Network development also brings various challenges when facilitating.Some unique people can utilize the improper in large quantities use network of robot program free resource, for example mass-send spam etc., and server usefulness is greatly reduced.Also the someone utilizes program constantly to send the services request response, carries out " saturation attack " to reach the purpose that makes the service paralysis.Even the somebody attempts utilizing means such as Brute Force to carry out virtual assets theft etc.For avoiding above-mentioned malicious act, design one cover can allow the computing machine explanation information automatically be that it is extremely important just to seem from reasonable user or the robot program's of improper use instrument.
The fundamental purpose of picture validation code is that explanation network service user is the program or the mankind.Picture validation code is the picture that a width of cloth contains character, can require the user to answer and show which literal in this pictures.For fear of by automatic program identification, adopt following several mode to avoid having shown which literal easily automatically in the identification picture at present by program: for example application number be CN200710063412 pass through the alphabetical stroke generation identifying code that links to each other; Perhaps, application number is that the employing multiframe animation mode of CN200710161039 generates identifying code; Perhaps, application number is the cooperation natural scene background of CN200710301626, fills the identifying code prospect with different colours; Perhaps, application number is that the random pixel of passing through of CN200710301622 increases identifying code identification difficulty.
The identifying code letter that 4 kinds of modes of above-mentioned generation generate all has clear and definite border, even link to each other by stroke, random pixel, perhaps mode such as changes colour comes automatic identification is disturbed, yet, when the increase interference can't be discerned machine, people's identification difficulty is increased, so complicated to a certain degree just having lost availability.
Summary of the invention
It is a kind of when increasing the machine recognition difficulty that technical matters to be solved by this invention is to provide, the generation method and system of the picture validation code of the difficulty of reduction human eye identification.
The present invention is achieved in that a kind of generation method of picture validation code, said method comprising the steps of:
Generate the identifying code character at random;
Remove the part stroke of described identifying code character at random;
The identifying code character of described removing part stroke is processed into the identifying code picture of picture format.
Another object of the present invention is to provide a kind of generation system of picture validation code, described system comprises:
Identifying code character generation module is used for generating at random the identifying code character;
Stroke is removed module, is used for removing at random the part stroke of described identifying code character;
The picture processing module is used for the identifying code character of described removing part stroke is processed into the identifying code picture of picture format.
Another object of the present invention is to provide a kind of generation method of picture validation code, said method comprising the steps of:
Generate the identifying code character at random;
Divide the background area of a zone as described identifying code character;
Described background area and described identifying code character are filled in different ways;
The identifying code picture that described background area that filling is finished and described identifying code character are processed into picture format.
Another object of the present invention is to provide a kind of generation system of picture validation code, described system comprises:
Identifying code character generation module is used for generating at random the identifying code character;
The area dividing module is used to divide the background area of a zone as described identifying code character;
Packing module is used for described background area and described identifying code character are filled in different ways;
The picture processing module is used for the identifying code picture that described background area that filling is finished and described identifying code character are processed into picture format.
In the present invention, part stroke by removing the identifying code character or the mode that background area and described identifying code character are filled in different ways, generate the identifying code picture, it is the ability of utilizing the human eye vision completion, certain part in the stroke of delete character, human eye is by discerning the completion of stroke automatically; Perhaps construct character by pattern filling, the border of character is discontinuous, and human eye comes the completion border to discern by the identification to figure.Thereby the identifying code that the generation method of the picture validation code that provides by the embodiment of the invention generates is provided, can when increasing the machine recognition difficulty, have reduced the difficulty of human eye identification.
Description of drawings
Fig. 1 is the realization flow synoptic diagram of the generation method of the picture validation code that provides of first embodiment of the invention.
Fig. 2 is the realization flow synoptic diagram of the generation method of the picture validation code that provides of second embodiment of the invention.
Fig. 3 is the synoptic diagram of the triangle identifying code picture of the removing part stroke that provides of the embodiment of the invention.
Fig. 4 is the synoptic diagram of the ABC identifying code picture of the removing part stroke that provides of the embodiment of the invention.
Fig. 5 is the synoptic diagram that the lines of two kinds of different colours providing of the embodiment of the invention constitute the identifying code picture.
Fig. 6 is the synoptic diagram of the ABC identifying code picture that constitutes of two kinds of different colours lines that the embodiment of the invention provides.
Fig. 7 is the structural representation of the generation system of the picture validation code that provides of eighth embodiment of the invention.
Fig. 8 is the structural representation of the generation system of the picture validation code that provides of ninth embodiment of the invention.
Embodiment
In order to make technical matters to be solved by this invention, technical scheme and beneficial effect clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
In embodiments of the present invention, utilize the characteristics of eye-observation things, can utilize lines, the figure of hint to see non-existent lines, the picture validation code by this thinking generates when increasing the machine recognition difficulty, has reduced the difficulty of human eye identification.
See also Fig. 1, the realization flow of the generation method of the picture validation code that provides for first embodiment of the invention, it may further comprise the steps:
In step S101, generate the identifying code character at random;
In embodiments of the present invention, described identifying code character can be: arabic numeral, English alphabet or other characters that can pass through physical keyboard or soft keyboard input are all within protection scope of the present invention.
In step S102, remove the part stroke of described identifying code character at random;
In embodiments of the present invention, in complete character space, for example be MxM, find N point by random number, N＞=3 carry out curve fitting by iunction for curve (for example Bezier) then, the curve that obtains is filled with background color, same process is carried out K time, K＞=1, the so just character that can obtain being cut.
In step S103, the identifying code character of described removing part stroke is processed into the identifying code picture of picture format.
See also Fig. 2, the realization flow of the generation method of the picture validation code that provides for second embodiment of the invention, it may further comprise the steps:
In step S201, generate the identifying code character at random;
In embodiments of the present invention, described identifying code character can be: arabic numeral, English alphabet or other characters that can pass through physical keyboard or soft keyboard input are all within protection scope of the present invention.
In step S202, divide the background area of a zone as described identifying code character;
In embodiments of the present invention, the big I in described zone is done corresponding adjustment according to the size and the identifying code picture viewing area size of identifying code character.
In step S203, described background area and described identifying code character are filled in different ways;
In step S204, the identifying code picture that described background area that filling is finished and described identifying code character are processed into picture format.
As third embodiment of the invention, the described step that described background area and described identifying code character are filled in different ways is specially:
Adopt different lines to fill to described background area and described identifying code character.
As fourth embodiment of the invention, the described step that described background area and described identifying code character are filled in different ways is specially:
Adopt different colors to fill to described background area and described identifying code character.
As fifth embodiment of the invention, the described step that described background area and described identifying code character are filled in different ways is specially:
Adopt different color and lines to fill to described background area and described identifying code character.
As sixth embodiment of the invention, the described step that described background area and described identifying code character are filled in different ways is specially:
To adopting identical lines with described identifying code character but lines are the mode of different directions fills in described background area.
As seventh embodiment of the invention, the described step that described background area and described identifying code character are filled in different ways is specially:
Adopt the different pattern of identical background color to fill described background area with described identifying code character.
Describe the operating process of the generation method of the picture validation code that the embodiment of the invention provides in detail below by son for example.
See also Fig. 3, Figure 3 shows that a triangle, but a part has been wiped at the edge, for machine recognition, be to think easily that this is a triangle, but discern for human eye, basically just can to recognize this be triangle in a glance, and Here it is utilizes the principle of the vision completion function of human eye.
See also Fig. 4, the mode with prior art generates the identifying code letter at random earlier, removes the part stroke then in letter at random, and as shown in Figure 4, this is the quilt letter of deletion stroke at random, and human eye a glance is ABC as can be seen just.
See also Fig. 5 and Fig. 6, Fig. 5 and Fig. 6 have adopted the lines of two kinds of different colours, but background color is the same.Human eye can easily be discerned the border, but machinery requirement identifies the zone that light lines occupy according to certain pattern, and difficulty increases a lot, is illustrated in figure 5 as square.
Fig. 6 is that can draw following identifying code picture is ABC by background and prospect being filled the different pattern of identical background color.
See also Fig. 7, the structure of the generation system of the picture validation code that provides for eighth embodiment of the invention.For convenience of explanation, only show the part relevant with the embodiment of the invention.The generation system of described picture validation code comprises identifying code character generation module 101, stroke removing module 102 and picture processing module 103.
Described identifying code character generation module 101 is used for generating at random the identifying code character; Wherein, described identifying code character can be: arabic numeral, English alphabet or other characters that can pass through physical keyboard or soft keyboard input are all within protection scope of the present invention.
Described stroke is removed module 102, is used for removing at random the part stroke of described identifying code character.
Described picture processing module 103 is used for the identifying code character of described removing part stroke is processed into the identifying code picture of picture format.
In embodiments of the present invention, described stroke is removed module 102, specifically be used in complete character space, find N point by random number, carry out curve fitting by iunction for curve then, the curve that obtains is filled with background color, and same process is carried out K time, K＞=1 then obtains the character that is cut.
As ninth embodiment of the invention, the generation system of described picture validation code comprises: identifying code character generation module 201, area dividing module 202, packing module 203 and picture processing module 204.
Described identifying code character generation module 201 is used for generating at random the identifying code character; Wherein, described identifying code character can be: arabic numeral, English alphabet or other characters that can pass through physical keyboard or soft keyboard input are all within protection scope of the present invention.
Described area dividing module 202 is used to divide the background area of a zone as described identifying code character; Wherein, the big I in described zone is done corresponding adjustment according to the size and the identifying code picture viewing area size of identifying code character.
Described packing module 203 is used for described background area and described identifying code character are filled in different ways; Wherein, described different mode mainly comprises: adopt different lines to fill to described background area and described identifying code character; Perhaps, adopt different colors to fill to described background area and described identifying code character; Perhaps, adopt different color and lines to fill to described background area and described identifying code character; Perhaps, identical lines are adopted with described identifying code character in described background area but lines are the mode of different directions fills; Perhaps, adopt the different pattern of identical background color to fill described background area with described identifying code character.
Described picture processing module 204 is used for the identifying code picture that described background area that filling is finished and described identifying code character are processed into picture format.
In sum, the part stroke of the embodiment of the invention by removing the identifying code character or the mode that background area and described identifying code character are filled in different ways, generate the identifying code picture, it is the ability of utilizing the human eye vision completion, certain part in the stroke of delete character, human eye is by discerning the completion of stroke automatically; Perhaps construct character by pattern filling, the border of character is discontinuous, and human eye comes the completion border to discern by the identification to figure.Thereby the identifying code that the generation method of the picture validation code that provides by the embodiment of the invention generates is provided, can when increasing the machine recognition difficulty, have reduced the difficulty of human eye identification.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, described program can be in being stored in a computer read/write memory medium, described storage medium is as ROM/RAM, disk, CD etc.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the generation method of a picture validation code is characterized in that, said method comprising the steps of:
Generate the identifying code character at random;
Remove the part stroke of described identifying code character at random;
The identifying code character of described removing part stroke is processed into the identifying code picture of picture format.
2. the method for claim 1 is characterized in that, the described step of removing the part stroke of described identifying code character at random is specially:
In complete character space, find N point by random number, carry out curve fitting by iunction for curve then, the curve that obtains is filled with background color, and same process is carried out K time, and K＞=1 then obtains the character that is cut.
3. the generation system of a picture validation code is characterized in that, described system comprises:
Identifying code character generation module is used for generating at random the identifying code character;
Stroke is removed module, is used for removing at random the part stroke of described identifying code character;
The picture processing module is used for the identifying code character of described removing part stroke is processed into the identifying code picture of picture format.
4. system as claimed in claim 3, it is characterized in that, described stroke is removed module, specifically be used in complete character space, find N point, carry out curve fitting by iunction for curve then by random number, the curve that obtains is filled with background color, same process is carried out K time, and K＞=1 then obtains the character that is cut.
5. the generation method of a picture validation code is characterized in that, said method comprising the steps of:
Generate the identifying code character at random;
Divide the background area of a zone as described identifying code character;
Described background area and described identifying code character are filled in different ways;
The identifying code picture that described background area that filling is finished and described identifying code character are processed into picture format.
6. method as claimed in claim 5 is characterized in that, described identifying code character is: one or both combinations of arabic numeral and English alphabet.
7. method as claimed in claim 5 is characterized in that, the described step that described background area and described identifying code character are filled in different ways is specially:
Adopt different lines to fill to described background area and described identifying code character; Perhaps,
Adopt different colors to fill to described background area and described identifying code character; Perhaps,
Adopt different color and lines to fill to described background area and described identifying code character; Perhaps,
To adopting identical lines with described identifying code character but lines are the mode of different directions fills in described background area; Perhaps,
Adopt the different pattern of identical background color to fill described background area with described identifying code character.
8. the generation system of a picture validation code is characterized in that, described system comprises:
Identifying code character generation module is used for generating at random the identifying code character;
The area dividing module is used to divide the background area of a zone as described identifying code character;
Packing module is used for described background area and described identifying code character are filled in different ways;
The picture processing module is used for the identifying code picture that described background area that filling is finished and described identifying code character are processed into picture format.
9. system as claimed in claim 8 is characterized in that, described identifying code character is: one or both combinations of arabic numeral and English alphabet.
10. system as claimed in claim 8 is characterized in that, described different mode mainly comprises: adopt different lines to fill to described background area and described identifying code character; Perhaps, adopt different colors to fill to described background area and described identifying code character; Perhaps, adopt different color and lines to fill to described background area and described identifying code character; Perhaps, identical lines are adopted with described identifying code character in described background area but lines are the mode of different directions fills; Perhaps, adopt the different pattern of identical background color to fill described background area with described identifying code character.
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| CN2010102194037A CN102298763A (en) | 2010-06-28 | 2010-06-28 | Method and system for generating picture identifying code |
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| CN104346557A (en) * | 2013-08-06 | 2015-02-11 | 深圳市腾讯计算机系统有限公司 | Verification code generation method and device and verification code display control method and device |
| CN104426879B (en) * | 2013-09-03 | 2019-01-25 | 腾讯科技（北京）有限公司 | Processing method and the corresponding methods, devices and systems of identifying code generation and verifying |
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| CN104200150B (en) * | 2014-09-01 | 2017-01-18 | 湖北盛天网络技术股份有限公司 | Method and device for processing verification codes |
| CN104657654B (en) * | 2014-12-22 | 2017-05-31 | 河海大学 | A kind of method for generating picture verification codes of utilization human eye vision compensation principle |
| CN104657654A (en) * | 2014-12-22 | 2015-05-27 | 河海大学 | Image verification code generation method utilizing human eye vision compensation principle |
| CN104700441A (en) * | 2015-02-05 | 2015-06-10 | 北京京东尚科信息技术有限公司 | Image verification code generating method and image verification code generating system |
| WO2016124066A1 (en) * | 2015-02-05 | 2016-08-11 | 北京京东尚科信息技术有限公司 | Image verification code generation method and system |
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| US10439818B2 (en) | 2015-04-23 | 2019-10-08 | Tencent Technology (Shenzhen) Company Limited | Captcha image generation method and apparatus, and server |
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| CN106157344B (en) * | 2015-04-23 | 2020-11-10 | 深圳市腾讯计算机系统有限公司 | Verification picture generation method and device |
| CN106936575A (en) * | 2015-12-29 | 2017-07-07 | 张仁平 | A kind of verification code system for allowing intelligent program to be difficult to |
| WO2018059033A1 (en) * | 2016-09-30 | 2018-04-05 | 华为技术有限公司 | Verification method, server and system |
| CN108154148A (en) * | 2018-01-22 | 2018-06-12 | 厦门美亚商鼎信息科技有限公司 | The artificial synthesis of training sample and the method for recognizing verification code based on the sample |
| CN111953647A (en) * | 2020-06-22 | 2020-11-17 | 北京百度网讯科技有限公司 | Security verification method and device, electronic equipment and storage medium |
| CN111953647B (en) * | 2020-06-22 | 2022-09-27 | 北京百度网讯科技有限公司 | Security verification method and device, electronic equipment and storage medium |
| CN112417419A (en) * | 2020-11-20 | 2021-02-26 | 北京字节跳动网络技术有限公司 | Verification code processing method, device, equipment and storage medium |
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Application publication date: 20111228 |