CN102024142B - A kind of method of anti-adhesion of answer sheets and device - Google Patents
A kind of method of anti-adhesion of answer sheets and device Download PDFInfo
- Publication number
- CN102024142B CN102024142B CN201010279038.9A CN201010279038A CN102024142B CN 102024142 B CN102024142 B CN 102024142B CN 201010279038 A CN201010279038 A CN 201010279038A CN 102024142 B CN102024142 B CN 102024142B
- Authority
- CN
- China
- Prior art keywords
- distance value
- mark line
- adhesion
- predictive error
- value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The present invention relates to answering card scanning technique field, disclose a kind of method and device of anti-adhesion of answer sheets. The method of a kind of anti-adhesion of answer sheets provided by the invention and device, by in the process of surface sweeping, detect the gap value of the double-edged mark line of same answering card, judge whether this distance exceedes the error amount of appointment, in order to judge whether these two images are tow sides images of same answering card, the situation that can effectively exclude adhesion of answer sheets occurs, and has improved Card Reader efficiency, has saved the time of going over examination papers; Increased the new function of anti-adhesion of answer sheets than the machine of the scanning answering card of prior art.
Description
Technical field
The present invention relates to answering card scanning technique field, in particular a kind of anti-adhesion of answer sheetsMethod and device.
Background technology
Along with the raising of current Examination Rateization degree, a lot of examinations all adopt machine-readable answer sheet as examinationThe carrier of volume answer, then scan and go over examination papers by machine. Answering card can be divided into two kinds of two-sided and one sides.
In prior art, in the time of the two-sided answering card of machine scans, often there is the situation of adhesion of answer sheets,Cause machine erroneous judgement or can not normally move, causing unnecessary loss, having extended the time of going over examination papers.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of anti-adhesion of answer sheetsMethod and device. By detecting the gap value of double-edged mark line of same answering card, comeJudge that whether these two images are tow sides images of same answering card, can exclude effectivelyThe situation of adhesion of answer sheets occurs, and has improved Card Reader efficiency and accuracy, has saved the time of going over examination papers.
The technical scheme that technical solution problem of the present invention adopts is as follows:
A method for anti-adhesion of answer sheets, wherein, comprises step:
Obtaining answering card front mark line is positive mark line distance value from the range data on trimming, and obtainsGetting answering card reverse side mark line is back mark linear distance value from the range data on trimming;
Described positive mark line distance value and the difference of back mark linear distance value are compared with a standard deviation, judge whether within the scope of a predictive error;
Difference and described standard deviation between described positive mark line distance value and back mark linear distance valueDifference in the first predictive error value time, being identified as is the tow sides of same answering card, continues to obtainTake off answering card data.
The method of described anti-adhesion of answer sheets, wherein, also comprises step:
Difference and described standard deviation between described positive mark line distance value and back mark linear distance valuePoor, between the first predictive error value and the second predictive error value time, as suspection situation, andThe processing of labelling.
The method of described anti-adhesion of answer sheets, wherein, also comprises step:
Difference and described standard deviation between described positive mark line distance value and back mark linear distance valuePoor, while exceeding the second predictive error value, directly alarm indication has the phenomenon of adhesion of answer sheets to occur,Wait for that operator processes.
The method of described anti-adhesion of answer sheets, wherein, also comprises step: described the first predictive error valueBe less than the second predictive error value.
The method of described anti-adhesion of answer sheets, wherein, when described answering card front mark line and described anti-Face mark line is complete when overlapping, the mark between described positive mark line distance value and back mark linear distance valueAccurate difference is 0 pixel.
The method of described anti-adhesion of answer sheets, wherein, described the first predictive error value is 2 pixels, instituteStating the second predictive error value is 5 pixels.
The method of described anti-adhesion of answer sheets, wherein, described standard deviation is 50 pixels.
A device for anti-adhesion of answer sheets, wherein, comprising:
Mark line range data acquisition module, for obtaining the distance of answering card front mark line from trimmingData are positive mark line distance value, and obtain answering card reverse side mark line and from the range data on trimming beBack mark linear distance value;
Judge module relatively, for by between described positive mark line distance value and back mark linear distance valueDifference and a standard deviation compare, and judge whether within the scope of a predictive error;
The first identification module, for working as between described positive mark line distance value and back mark linear distance valueThe difference of difference and described standard deviation is in the first predictive error value time, and being identified as is same answering cardTow sides, continue to obtain next answering card data.
The device of described anti-adhesion of answer sheets, wherein, also comprises:
The second identification module, for working as between described positive mark line distance value and back mark linear distance valueDifference and described standard deviation poor, between the first predictive error value and the second predictive error value time,As suspection situation, and the processing of labelling;
The 3rd identification module, for working as between described positive mark line distance value and back mark linear distance valueDifference and described standard deviation poor, while exceeding the second predictive error value, directly alarm indication is answeredThe phenomenon of topic card adhesion occurs, and waits for that operator processes.
The device of described anti-adhesion of answer sheets, wherein,
Standard deviation between described positive mark line distance value and back mark linear distance value is 0 pixel;
Described the first predictive error value is 2 pixels, and described the second predictive error value is 5 pixels.
Beneficial effect of the present invention: the method for a kind of anti-adhesion of answer sheets provided by the invention and device,By in the process of surface sweeping, detect the gap value of the double-edged mark line of same answering card,Judge whether this distance exceedes the error amount of appointment, in order to judge whether these two images are same and answerThe tow sides image of topic card, the situation that can effectively exclude adhesion of answer sheets occurs, and has improvedCard Reader efficiency, has saved the time of going over examination papers. Increase anti-answering than the machine of the scanning answering card of prior artThe new function of topic card adhesion.
Brief description of the drawings
Fig. 1 is the method flow diagram of the anti-adhesion of answer sheets of the embodiment of the present invention;
Fig. 2 is answering card front schematic view in the embodiment of the present invention;
Fig. 3 is answering card reverse side schematic diagram in the embodiment of the present invention;
Fig. 4 is the method specific implementation flow chart of the anti-adhesion of answer sheets of the embodiment of the present invention;
Fig. 5 is the principle of device block diagram of the anti-adhesion of answer sheets of the embodiment of the present invention.
Detailed description of the invention
The method of a kind of anti-adhesion of answer sheets provided by the invention and device, the present invention is mainly for answeringTopic is stuck in the situation of carrying out the adhesion of answer sheets of encountering in paper duplex scanning process, if answering card onlyThat the situation of one side surface sweeping is not within considering. For making object of the present invention, technical scheme and advantage moreAdd clear, clearly, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment. ShouldUnderstand, specific embodiment described herein is only in order to explain the present invention, and is not used in and limits thisBright.
The method of a kind of anti-adhesion of answer sheets of the embodiment of the present invention, its general principle is: for sameThe gap of the mark line that answering card is positive and negative two is that what to be fixed is a standard deviation. Paper makeIn process, always there is vertical line (being generally mark line), so can in the scanning process of answering cardUtilize this characteristic to be identified the situation of adhesion of answer sheets.
As shown in Figure 1, the method for the anti-adhesion of answer sheets of the embodiment of the present invention, mainly comprises following stepRapid:
Step S110, by scanning obtain answering card front mark line from the range data on trimming for just markingNote linear distance value, and to obtain answering card reverse side mark line be back mark line-spacing from the range data on trimmingFrom value.
Step S120, by difference and a standard of described positive mark line distance value and back mark linear distance valueDifference compares, and judges whether within the scope of a predictive error;
For example,, when specified standard answering card, the criterion distance on front mark line and trimming is 100Pixel, when the distance on reverse side mark line and trimming is as the criterion 150 pixel, its positive and negative mark line fromThe range difference on trimming is fixing standard deviation 50 pixels. But in actual scanning answering card data proceduresIn, the range difference existing between the described positive mark line distance value that scanning is obtained and back mark linear distance valueCan there is certain error value in value and standard deviation, if find positive and negative two images two mark lines itBetween distance just can assert while exceeding the first predictive error value (such as 2 pixels) of an appointmentThese two images are not positive and negative two images of same paper, shown in step specific as follows.
Step S130, difference and institute between described positive mark line distance value and back mark linear distance valueThe difference of stating standard deviation is in the first predictive error value time, and being identified as is positive and negative two of same answering cardFace, continues to obtain next answering card data.
Positive and negative mark line as described above is that a fixing standard deviation 50 looks like from the range difference on trimmingElement, but the front mark line that scanning obtains is that positive mark line distance value is 100 pixels from the distance on trimming,The mark line of reverse side is that back mark linear distance value is 150 pixels from trimming distance, so described positive markThe distance difference existing between linear distance value and back mark linear distance value is 50 pixels. Itself and standard deviation50 pixels difference the first predetermined difference value such as 2 pixels in. Being identified as is same answering cardTow sides, continue to obtain next answering card data, repeating step S110, S120, S130 untilAll answering card has scanned, and finishes.
Step S140, difference and institute between described positive mark line distance value and back mark linear distance valueState the poor of standard deviation, (compare in the first predictive error value (such as 2 pixels) and the second predictive error valueAs 5 pixels) between time, as suspection situation, and the processing of labelling. Prompting now can be setTo operator whether to need to deal with, if, wait for operator's instruction, finish dealing with and carry out againNext answering card scanning. Otherwise can wait whole answering cards to scan, see that the answering card of scanning is totalWhether number is consistent with actual answering card sum, if unanimously, suspects the cancellation of situation mark. InconsistentWords suspection situation be labeled as answering card and have adhesion situation, again process the answering card of suspecting mark.Can effectively reduce scanning error rate.
Step S150, difference and institute between described positive mark line distance value and back mark linear distance valueState the poor of standard deviation, for example, while exceeding the second predictive error value (5 pixels), directly report to the police aobviousThe phenomenon that is shown with adhesion of answer sheets occurs, and waits for that operator processes. Can effectively exclude and answer like thisThe situation of topic card adhesion occurs.
By a concrete Application Example, the method for anti-adhesion of answer sheets of the present invention is done into one belowWalk detailed explanation.
As shown in Figure 2, for the front schematic view of answering card described in the embodiment of the present invention, comprise frontMark line 11 and trimming line 12, described front mark line 11 is steady state values from the distance of trimming line 12,Fig. 3 is the reverse side schematic diagram of answering card of the present invention, comprises reverse side mark line 21 and trimming line 12,Described reverse side mark line 21 is also steady state value from the distance of trimming line 12, so, described reverse side markDistance difference described in line 21 and Fig. 1 between front mark line 11 is also steady state value, in the present inventionIn, positive and negative two mark lines are identical apart from the distance on trimming, are overlapped, namelySay, if these two mark lines see on same vertical line in face of sunlight, apart from differenceBe 0.
This concrete Application Example is in the time of specific implementation, as shown in Figure 4:
Step S301, while starting to scan, scan successively front mark line and the reverse side mark line of answering card,Obtaining answering card front mark line is positive mark line distance value from the range data on trimming, and obtains and answerTopic card reverse side mark line is back mark linear distance value from the range data on trimming, and calculates two marksThe pixel distance difference R of line;
Step S302, the described positive mark line distance value that scanning is obtained and back mark linear distance value poorValue and a standard deviation compare, and judge whether within the scope of a predictive error. Be that R=| scanning is obtainedDescribedly compare the poor of judgement apart from difference and standard deviation |
Step S303, judge the size of R value, if when R value is not more than 2 pixels, thoughtThe tow sides of same answering card, next is opened to continue scanning;
While being not more than 5 pixels if R value is greater than 2 pixels, do suspection mark, ifProcess, wait for operator's instruction, otherwise next is opened to continue scanning;
If when R value is greater than 5 pixels, namely remaining all situations, directly alarm indicationThere is the phenomenon of adhesion of answer sheets to occur, wait for operator's instruction.
So repeatedly, until scanned, finish.
Therefore, adopt after the method for anti-adhesion of answer sheets provided by the invention scanning afterwardsIn process, if the situation of duplex scanning, substantially can exclude the situation of adhesion of answer sheetsOccur.
The processing method of a kind of anti-adhesion of answer sheets providing based on above-described embodiment, the embodiment of the present inventionA kind for the treatment of apparatus of anti-adhesion of answer sheets is also provided, as shown in Figure 5, has comprised:
Mark line range data acquisition module 510, for obtaining the distance of answering card front mark line from trimmingBe positive mark line distance value from data, and obtain the range data of answering card reverse side mark line from trimmingFor back mark linear distance value.
Relatively judge module 520, for by between described positive mark line distance value and back mark linear distance valueDifference and a standard deviation compare, judge whether within the scope of a predictive error.
The first identification module 530, between described positive mark line distance value and back mark linear distance valueDifference and the difference of described standard deviation in the first predictive error value time, being identified as is same answerThe tow sides of card, continue to obtain next answering card data.
The second identification module 540, between described positive mark line distance value and back mark linear distance valueDifference and described standard deviation poor, between the first predictive error value and the second predictive error value time,As suspection situation, and the processing of labelling.
The 3rd identification module 550, between described positive mark line distance value and back mark linear distance valueDifference and described standard deviation poor, while exceeding the second predictive error value, directly alarm indication hasThe phenomenon of adhesion of answer sheets occurs, and waits for that operator processes.
The device of described anti-adhesion of answer sheets, wherein, in the time that described positive and negative mark line is overlapping, instituteStating the standard deviation existing between positive mark line distance value and back mark linear distance value is 0 pixel; This realityExecuting described the first predictive error value of general employing in example is 2 pixels, and described the second predictive error value is 5Pixel.
In sum, beneficial effect of the present invention: the side of a kind of anti-adhesion of answer sheets provided by the inventionMethod and device, by the process of scanning, detect the double-edged mark line of same answering cardGap value, judge whether this distance exceedes the error amount of appointment, in order to whether to judge these two imagesBe the tow sides image of same answering card, the situation that can effectively exclude adhesion of answer sheets is sent outRaw, improve Card Reader efficiency, save the time of going over examination papers.
Should be understood that, application of the present invention is not limited to above-mentioned giving an example, to ordinary skillPersonnel, can be improved according to the above description or be converted, and all these improvement and conversion are all answeredBelong to the protection domain of claims of the present invention.
Claims (6)
1. a method for anti-adhesion of answer sheets, is characterized in that, comprises step:
Obtaining answering card front mark line is positive mark line distance value from the range data on trimming, and to obtain answering card reverse side mark line be back mark linear distance value from the range data on trimming;
Difference and a standard deviation of described positive mark line distance value and back mark linear distance value are compared, judge whether within the scope of a predictive error;
In the time that the difference of the difference between described positive mark line distance value and back mark linear distance value and described standard deviation is in the first predictive error value, being identified as is the tow sides of same answering card, continues to obtain next answering card data;
Difference between described positive mark line distance value and back mark linear distance value and described standard deviation poor, between the first predictive error value and the second predictive error value time, as suspection situation, and the processing of labelling;
Difference between described positive mark line distance value and back mark linear distance value and described standard deviation poor, while exceeding the second predictive error value, directly alarm indication has the phenomenon of adhesion of answer sheets to occur, and waits for that operator processes;
Described the first predictive error value is less than the second predictive error value.
2. the method for anti-adhesion of answer sheets according to claim 1, is characterized in that, when described answering card front mark line and described reverse side mark line complete when overlapping, the standard deviation between described positive mark line distance value and back mark linear distance value is 0 pixel.
3. the method for anti-adhesion of answer sheets according to claim 1, is characterized in that, described the first predictive error value is 2 pixels, and described the second predictive error value is 5 pixels.
4. the method for anti-adhesion of answer sheets according to claim 1, is characterized in that, described standard deviation is 50 pixels.
5. a device for anti-adhesion of answer sheets, is characterized in that, comprising:
Mark line range data acquisition module, is positive mark line distance value for obtaining answering card front mark line from the range data on trimming, and to obtain answering card reverse side mark line be back mark linear distance value from the range data on trimming;
Relatively judge module, for difference and a standard deviation between described positive mark line distance value and back mark linear distance value are compared, judges whether within the scope of a predictive error;
The first identification module, in the time that the difference of the difference between described positive mark line distance value and back mark linear distance value and described standard deviation is in the first predictive error value, being identified as is the tow sides of same answering card, continues to obtain next answering card data;
The second identification module, poor for the difference when between described positive mark line distance value and back mark linear distance value and described standard deviation, between the first predictive error value and the second predictive error value time, as suspection situation, and the processing of labelling;
The 3rd identification module, poor for the difference when between described positive mark line distance value and back mark linear distance value and described standard deviation, while exceeding the second predictive error value, directly alarm indication has the phenomenon of adhesion of answer sheets to occur, wait operator processing.
6. the device of anti-adhesion of answer sheets according to claim 5, is characterized in that,
When described answering card front mark line and described reverse side mark line complete when overlapping, the standard deviation between described positive mark line distance value and back mark linear distance value is 0 pixel;
Described the first predictive error value is 2 pixels, and described the second predictive error value is 5 pixels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010279038.9A CN102024142B (en) | 2010-11-25 | 2010-11-25 | A kind of method of anti-adhesion of answer sheets and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010279038.9A CN102024142B (en) | 2010-11-25 | 2010-11-25 | A kind of method of anti-adhesion of answer sheets and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102024142A CN102024142A (en) | 2011-04-20 |
| CN102024142B true CN102024142B (en) | 2016-05-25 |
Family
ID=43865423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010279038.9A Active CN102024142B (en) | 2010-11-25 | 2010-11-25 | A kind of method of anti-adhesion of answer sheets and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102024142B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2459675A (en) * | 2008-04-30 | 2009-11-04 | Hewlett Packard Development Co | Double sided substrate scanning |
| CN101576963A (en) * | 2008-05-09 | 2009-11-11 | 旭丽电子(广州)有限公司 | Transaction machine with scoring function and method for scoring by using same |
| CN101866415A (en) * | 2009-08-24 | 2010-10-20 | 深圳市海云天科技股份有限公司 | Answer sheet recognition device and method of computer marking system |
-
2010
- 2010-11-25 CN CN201010279038.9A patent/CN102024142B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2459675A (en) * | 2008-04-30 | 2009-11-04 | Hewlett Packard Development Co | Double sided substrate scanning |
| CN101576963A (en) * | 2008-05-09 | 2009-11-11 | 旭丽电子(广州)有限公司 | Transaction machine with scoring function and method for scoring by using same |
| CN101866415A (en) * | 2009-08-24 | 2010-10-20 | 深圳市海云天科技股份有限公司 | Answer sheet recognition device and method of computer marking system |
Non-Patent Citations (1)
| Title |
|---|
| 基于数字图像处理的答题卡识别方法研究;周海涛 等;《电脑知识与技术》;20081231(第28期);第197-199页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102024142A (en) | 2011-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102169093B (en) | Multi-station machine vision imaging detection method and system based on graphics processor | |
| US20100225945A1 (en) | Management apparatus, management method, and program | |
| EP2299386A3 (en) | Image processing apparatus, image processing system, and image processing method | |
| CN102377906B (en) | Image reading apparatus and method of controlling the apparatus | |
| EP2169933A3 (en) | Image processing system and image scanner therefor | |
| EP2299685A3 (en) | System, method and computer-readable recording medium for executing printing with image forming apparatus | |
| CN104239853A (en) | Method and device for processing images | |
| CN110536040A (en) | The method and medium for carrying out the image processing apparatus for cutting processing more, generating image | |
| CN114255436A (en) | Security image recognition system and method based on artificial intelligence | |
| CN106713739B (en) | A kind of recognition methods of the two dimensional code shown based on electronic curtain | |
| CN102024142B (en) | A kind of method of anti-adhesion of answer sheets and device | |
| CN103175840B (en) | Based on offset plate surface detection method and the system of machine vision | |
| CN102196084A (en) | Mobile phone and method for answering call | |
| CN109165642B (en) | Enhanced answer sheet intelligent identification method based on deep learning | |
| CN105372261A (en) | Analysis instrument achieving reverse osmosis membrane element defective product leakage point detection and detection method | |
| CN205028369U (en) | Fingerprint, identity card information perception passageway | |
| CN103175841B (en) | CTP (Computer to Plate) plate surface detection method and system based on machine vision | |
| US20160219189A1 (en) | Information processing apparatus, image processing method, and non-transitory computer readable medium | |
| CN104112271A (en) | Detection method and system for housing side defect of mobile terminal | |
| CN107705300A (en) | A kind of method that blank page detection is realized based on morphological transformation | |
| CN205028367U (en) | Vocal print, identity card information perception passageway | |
| CN209803018U (en) | machine vision detection system for metal defects | |
| CN202512620U (en) | Document counting device, document feeder and image capturing system | |
| CN105701959A (en) | Real-time monitoring early-warning device and real-time monitoring early-warning method for residual paper amount of carton | |
| CN207643927U (en) | A kind of novel intelligent printing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |