CN106372591A - System facing non-supervision test and avoiding cheating of virtual camera - Google Patents
System facing non-supervision test and avoiding cheating of virtual camera Download PDFInfo
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- CN106372591A CN106372591A CN201610771733.4A CN201610771733A CN106372591A CN 106372591 A CN106372591 A CN 106372591A CN 201610771733 A CN201610771733 A CN 201610771733A CN 106372591 A CN106372591 A CN 106372591A
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- softcam
- cheating
- virtual camera
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- examination
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/16—Human faces, e.g. facial parts, sketches or expressions
- G06V40/161—Detection; Localisation; Normalisation
- G06V40/167—Detection; Localisation; Normalisation using comparisons between temporally consecutive images
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/50—Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems
- G06F21/55—Detecting local intrusion or implementing counter-measures
- G06F21/554—Detecting local intrusion or implementing counter-measures involving event detection and direct action
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/10—Services
- G06Q50/20—Education
Abstract
The present invention discloses a system facing a non-supervision test and avoiding cheating of a virtual camera, belonging to the smart education technology field. The system comprises a front end device and a background service unit; the front end device is an intelligent terminal having flat panel display and configured to realize the user's input interaction and test content display; the background service unit consists of a user management module and a test management module; the system also comprise a client software or browse software and a module for avoiding cheating of a virtual camera, wherein the module for avoiding cheating of the virtual camera employs the virtual camera to only repeatedly play images and cannot realize the dynamic interaction feature. The system facing the non-supervision test and avoiding the cheating of the virtual camera detects whether there is a virtual camera in a computer (an intelligent terminal having flat panel display such as a mobile phone, a tablet computer and the like) or not, prompts test students after the virtual camera is detected, forces the test students to quit the test, and employs a screen-locking or keyboard-locking method to prevent a new virtual camera from being installed by students who pass the detection so as to prevent test students from cheating by employing the virtual camera.
Description
Technical field
The present invention relates to wisdom education technical field, refering in particular to a kind of Softcam cheating that prevents towards unmanned invigilator is
System.
Background technology
With the deep application of Internet technology, the demand using telecommunication network examination/online testing is more and more urgent, by
In can not preferably solve the difficult problem that prevents cheating, the application of online testing and development are constantly subjected to restrict.People start with
Photographic head obtains examinee's image, to reach the purpose of invigilator.
Patent 201110173907.4 " method being prevented cheating using candid photograph imaging technique in distance education training, examination "
In refer to using usb photographic head, capture the image of examinee.Patent 201210202592.6 " online testing intelligent monitoring side
Method ", and patent 201110173907.4 " method being prevented cheating using candid photograph imaging technique in distance education training, examination "
All refer to gather examinee's image using photographic head.
But there is a kind of simple Softcam technology on the market, a virtual shooting is installed on examinee's computer
Flaccidity of the neck part, you can with fraud monitoring software so as to the image being mistakenly considered Softcam offer is real image.Virtual shooting
Head can play arbitrary picture, Dynamic Graph, video recording etc., it is impossible to it is real for distinguishing under current photographic head testing mechanism
Photographic head, or Softcam.Even the image that with the naked eye viewing photographic head provides, also cannot be distinguished by being real time imaging,
Or record a video.And in prior art, find no the method this Softcam being detected and being prevented.
Content of the invention
The purpose of the present invention is for typical On-line Examining system, detects whether to use Softcam in headend equipment
Cheating, and the generation of this kind of cheating is prevented by relevant art means.
For the problem of Softcam cheating, the present invention proposes a kind of Softcam that prevents towards unmanned invigilator and makees
Disadvantage method, it can only carry out repeating playing image using Softcam, the characteristic that do not enable dynamic interaction is examined to it
Survey, effectively prevent examinee from being practised fraud using Softcam.
The concrete technical scheme of the present invention is:
A kind of prevent Softcam cheating system towards unmanned invigilator, including headend equipment and background service unit,
Described headend equipment is the intelligent terminal showing with plane, for realizing the input interaction of user and representing of examination content；Institute
State background service unit and include user management module, examination management module, described system also includes client software or browser
Control and prevent Softcam cheating module.
As the improvement further of technical solution of the present invention, described client software includes built-in browser, described visitor
Family end software or browser control part are provided with video and audio acquisition module, and described video and audio acquisition module is used for gathering on headend equipment
Voice, video.
As the improvement further of technical solution of the present invention, described prevent Softcam cheating module workflow concrete
Comprise the following steps:
Step1: retrieval current headend equipment all of photographic head quantity；
Step2: if photographic head quantity >=predefined quantity, shows there is unnecessary photographic head in system, this is to take an examination not
Allow, point out examinee and compulsory withdrawal examination；
Step3: retrieve Softcam title or the identifier of current headend equipment, find have and common dummy photographic head
The same or similar identifier of software such as vcam, softcam etc., assert with the presence of Softcam, points out examinee and force to move back
Go out examination；
Step4: obtain the resolution sizes of current video image, if its length is length, width is width.If
In length and width, less number is min, takes a random number between 30 to min, if it is random；
Subtract between random in random to length, take a random number, be set to x, subtract in random to width
Between random, take a random number, be set to y；
With the lower left corner as initial point, (x, y) coordinate position in current video image, draw one with random for the length of side
Square frame or draw a circle with random for diameter it is desirable to examinee adjust its face location so that face be shown in this square frame or
Within this circle；Face location in detection present image, its face rectangle should be within above-mentioned square frame or circle；
Step5: wait second time m set in advance, if examinee does not realize for face being placed in square frame in limiting time
Within, then regard as the suspicion with the presence of Softcam；
Step6: step4-step5 step is repeated n time, n >=1, suspicion number of times reaches predetermined quantity, then recognize
Surely with the presence of Softcam, examinee compulsory withdrawal examination are pointed out；
Step7: if suspicion is not up to predetermined number of times, regard as there is no Softcam it is allowed to examinee continues examination,
But need lock-screen with keyboard until examination terminates, prevent the new Softcam software of examinee's subsequent installation one.
Compared with prior art, the invention has the beneficial effects as follows:
1st, it is found that in online testing, it is possible to use the leak of Softcam cheating, pin devises many for this leak
The method of kind, the presence of comprehensive detection Softcam；
2nd, the method adopting stochastic and dynamic interaction, detects Softcam.Crucial at 2 points, one is that detected rule will be with
Machine, including face location and size, two have been intended to time restriction.Otherwise Softcam can also make coincidence detection rule in advance
Video recording then.In addition, if time long enough, in video recording, face does not stop shift position, also can move in detection square frame.
3rd, adopt screen locking or the method for keyboard, prevent detection by afterwards, examinee installs a new Softcam.
Brief description
Fig. 1 detects Softcam flow chart for the embodiment of the present invention.
Fig. 2 is embodiment of the present invention On-line Examining system schematic diagram.
Specific embodiment
In conjunction with Figure of description, the embodiment of the present invention is described in detail.
In detection headend equipment of the present invention (including the intelligent terminal that mobile phone, flat board etc. show with plane, as follows) whether
There is Softcam, prevent examinee from being practised fraud using Softcam.By a kind of side preventing Softcam cheating
Method, the characteristic can only carry out repeating playing image using Softcam, not enabling dynamic interaction detects to it.
Typical On-line Examining system mainly includes headend equipment and background service, described headend equipment can be computer,
The intelligent terminal that flat board, mobile phone etc. show with plane, the input that headend equipment mainly completes user interacts, and examination content
Represent, typically completed by browser.Backstage mainly includes the modules such as user management, examination management, using background service form
Complete.
As shown in Fig. 2 a kind of of the present invention prevents Softcam cheating system online in typical case towards what nobody invigilated
On the basis of examination system, increased client software or the browser control part of front end, mainly include video and audio acquisition module, prevent
Softcam cheating module etc. is so that this examination system possesses the function of preventing Softcam cheating.
According to the demand of examining body, determine in headend equipment it is to adopt client software first, still adopt browser
Control form.If client software, then user needs to download and installs a client software, after this client software runs
The built-in browser of client software can be called, by this built-in browser, carry out typical online testing.If adopting
Browser control part form, then directly download in a browser and install and run this browser control part, be then also by browser
Carry out online testing.
In examination process, client software or browser control part can call video and audio acquisition module to examinee, obtain front end
Voice on equipment, video, for preventing Softcam cheating module from using.
Prevent the concrete operations flow process of Softcam cheating module as follows:
Step1: retrieval current headend equipment all of photographic head quantity；
Step2: if photographic head quantity >=predefined quantity (generally 2), shows there is unnecessary photographic head in system,
This takes an examination and does not allow, and points out examinee and compulsory withdrawal examination；
Step3: retrieve Softcam title or the identifier of current headend equipment, find have and common dummy photographic head
The same or similar identifier of software such as vcam, softcam etc., assert with the presence of Softcam, points out examinee and force to move back
Go out examination；
Step4: obtain the resolution sizes of current video image, if its length is length, width is width.If
In length and width, less number is min, takes a random number between 30 to min, if it is random；
Subtract between random in random to length, take a random number, be set to x, subtract in random to width
Between random, take a random number, be set to y；
With the lower left corner as initial point, (x, y) coordinate position in current video image, draw one with random for the length of side
Square frame or draw a circle with random for diameter it is desirable to examinee adjust its face location so that face be shown in this square frame or
Within this circle；Face location in detection present image, its face rectangle should be within above-mentioned square frame or circle；
Step5: wait second time m set in advance, if examinee does not realize for face being placed in square frame in limiting time
Within, then regard as the suspicion with the presence of Softcam；
Step6: step4-step5 step is repeated n time, n >=1, suspicion number of times reaches predetermined quantity, then recognize
Surely with the presence of Softcam, examinee compulsory withdrawal examination are pointed out；
Step7: if suspicion is not up to predetermined number of times, regard as there is no Softcam it is allowed to examinee continues examination,
But need lock-screen with keyboard until examination terminates, prevent the new Softcam software of examinee's subsequent installation one.
After the detection of above-mentioned flow process, without finding Softcam, then call built-in browser, access corresponding
Exam web, enters follow-up flow process of taking an examination.
If run with plug-in unit or dynamic link library form, program is to be called by its host program, and program is same
Detect whether there is Softcam on current headend equipment, and testing result is returned to caller.After being determined by caller
Continuous operation.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not right
The restriction of embodiments of the present invention.For those of ordinary skill in the field, also may be used on the basis of the above description
To make other changes in different forms.There is no need to be exhaustive to all of embodiment.All this
Interior made any modification of the spirit of invention and principle, equivalent and improvement etc., should be included in the claims in the present invention
Protection domain in.
Claims (3)
1. a kind of prevent Softcam cheating system towards unmanned invigilator, including headend equipment and background service unit, its
It is characterised by, described headend equipment is the intelligent terminal showing with plane, for realizing input interaction and the examination content of user
Represent；Described background service unit includes user management module, examination management module, and described system also includes client software
Or browser control part and prevent Softcam cheating module.
2. according to claim 1 a kind of towards unmanned invigilator prevent Softcam cheating system it is characterised in that
Described client software includes built-in browser, and described client software or browser control part are provided with video and audio acquisition module.
3. according to claim 1 a kind of towards unmanned invigilator prevent Softcam cheating system it is characterised in that
Described prevent Softcam cheating module workflow from specifically including following steps:
(1) retrieve current headend equipment all of photographic head quantity；
(2) if the photographic head quantity retrieving >=predefined quantity, show in system, there is unnecessary photographic head, point out examinee
And compulsory withdrawal is taken an examination；
(3) retrieve Softcam title or the identifier of current headend equipment, find have and common dummy camera software phase
Same or similar identifier, assert with the presence of Softcam, points out examinee compulsory withdrawal examination；
(4) resolution sizes of current video image are obtained, if its length is length, width is width；If length and
In width, less number is min, takes a random number between 30 to min, if it is random；
Subtract between random in random to length, take a random number, be set to x, random to width subtract random it
Between, take a random number, be set to y；
With the lower left corner as initial point, (x, y) coordinate position in current video image, a square frame is drawn for the length of side with random
Or draw a circle it is desirable to examinee adjusts its face location so that face is shown in this square frame or this circle with random for diameter
Within；Face location in detection present image, its face rectangle should be within above-mentioned square frame or circle, if thinking symbol
Close and require；
(5) wait second time m set in advance, if examinee does not realize being placed within square frame by face in limiting time,
Regard as the suspicion with the presence of Softcam；
(6) step (4) is repeated n time to (5), n=1, suspicion number of times reaches predetermined quantity, then assert there be virtual taking the photograph
As head exists, point out examinee compulsory withdrawal examination；
(7) if suspicion is not up to predetermined number of times, regard as there is no Softcam it is allowed to examinee continues examination, and lock
Screen prevents the new Softcam software of examinee's subsequent installation one with keyboard until examination terminates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610771733.4A CN106372591B (en) | 2016-08-30 | 2016-08-30 | It is a kind of to prevent Softcam cheating system towards unmanned invigilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610771733.4A CN106372591B (en) | 2016-08-30 | 2016-08-30 | It is a kind of to prevent Softcam cheating system towards unmanned invigilator |
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| CN106372591A true CN106372591A (en) | 2017-02-01 |
| CN106372591B CN106372591B (en) | 2019-05-07 |
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| CN201610771733.4A Active CN106372591B (en) | 2016-08-30 | 2016-08-30 | It is a kind of to prevent Softcam cheating system towards unmanned invigilator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109756620A (en) * | 2018-12-15 | 2019-05-14 | 深圳壹账通智能科技有限公司 | Softcam recognition methods and relevant device based on mobile phone |
| CN116319004A (en) * | 2023-03-21 | 2023-06-23 | 北京网梯科技发展有限公司 | Method and device for preventing cheating in online examination |
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| CN116319004A (en) * | 2023-03-21 | 2023-06-23 | 北京网梯科技发展有限公司 | Method and device for preventing cheating in online examination |
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| CN106372591B (en) | 2019-05-07 |
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Inventor after: Liu Zhiqiang Inventor after: Zhou Wenjie Inventor after: Qiu Gongsheng Inventor after: Xiao Xiao Inventor after: Zeng Li Inventor after: Gao Feng Inventor after: Xiao Aiwei Inventor before: Liu Zhiqiang Inventor before: Zhou Wenjie Inventor before: Qiu Gongsheng Inventor before: Xiao Xiao Inventor before: Zeng Li Inventor before: Xie Jianbin Inventor before: Gao Feng Inventor before: Xiao Aiwei |