CN115273213A - VR (virtual reality) glasses and anti-cheating method thereof in online examination - Google Patents
VR (virtual reality) glasses and anti-cheating method thereof in online examination Download PDFInfo
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Abstract
The invention relates to VR glasses and an online examination anti-cheating method thereof. The VR glasses and the anti-cheating method for the online examination belong to the field of electric digital data processing, and the method comprises the steps of obtaining facial information of an examinee and determining identity information of the examinee; obtaining the wearing state of VR glasses of an examinee before examination; if the wearing state of VR glasses of the examinee is correct, image information of surrounding visual angles of the examinee is obtained; if the wearing state of the VR glasses of the examinee is wrong, sending a wearing error prompt until the wearing state of the VR glasses of the examinee is correct; obtaining mark points of the face positions of examinees, obtaining real-time image information of the face mark points in real time, and judging the wearing state of VR glasses during examination based on the real-time image information; the VR glasses and the cheating prevention method for the online examination are convenient to operate, flexible to use and convenient for examinees to experience and use.
Description
Technical Field
The invention belongs to the technical field of virtual display technology and monitoring, and particularly relates to VR glasses and an online examination anti-cheating method thereof.
Background
In the prior art, a cheating prevention method for an online examination mode generally monitors an online examinee by using a camera. However, the greatest disadvantage of this method is that the monitoring range of a single camera is limited, and the examinee still has the possibility of bringing cheating props into the examination area and cheating through tiny actions and dead zones of the camera. In brief, existing online examination systems cannot effectively restrict the examinee's eyes from acquiring information content, which may include valid examination content and cheating content.
Therefore, the online examination method in the prior art cannot effectively avoid cheating behaviors, and an online examination system for effectively preventing cheating needs to be proposed urgently.
Disclosure of Invention
The invention aims to solve the problems and provide VR glasses with simple structure and reasonable design and an anti-cheating method for online examination.
In a first aspect, the present invention provides a method for preventing cheating on an online examination based on VR glasses, comprising,
obtaining face information of an examinee, and determining identity information of the examinee;
obtaining the wearing state of VR glasses of an examinee before examination;
if the wearing state of VR glasses of the examinee is correct, image information of surrounding visual angles of the examinee is obtained;
if the wearing state of the examinee VR glasses is wrong, sending a wearing error prompt until the wearing state of the examinee VR glasses is correct;
obtaining mark points of the face position of an examinee, obtaining real-time image information of the face mark points in real time, and judging the wearing state of VR glasses during examination based on the real-time image information;
acquiring audio information of the ear of the examinee in real time;
whether the examination score of the examinee is effective or not is judged based on the audio information of the ear and the examination wearing state of the VR glasses.
As a further optimization scheme of the invention, corresponding image information is obtained based on a channel corresponding to the eyes of the examinee in the VR glasses, whether the positions of the eyes of the examinee correspond to the channel or not is judged based on the obtained image information, and whether the wearing state of the examinee before examination is correct or not is obtained based on the positions of the eyes of the examinee.
As a further optimization scheme of the invention, when the wearing state of VR glasses before examination is correct, image information in front of the actual scene of the visual angle of the examinee is obtained, a rotation prompt is sent, image information of the full visual angle around the examinee is obtained, the image information is sent to a server, and the image information is stored and displayed on a display terminal according to a preset mode; and if the wearing state of the VR glasses before examination is an incorrect result, playing a prompt audio, and uninterruptedly obtaining corresponding image information based on a channel corresponding to the eyes of the examinee in the VR glasses until the positions of the eyes of the examinee correspond to the channel, and keeping the set time to obtain a result that the wearing state before examination is correct.
As a further optimization scheme of the invention, mark points of the face positions of the examinees are obtained, wherein the mark points comprise skin image information or skin image information with ink marks, real-time image information of the face mark points is obtained in real time, whether the examinees move VR glasses in the examination is judged based on the real-time image information, whether cheating is possible for the examinees is obtained, and whether the examination scores of the examinees are effective is judged.
As a further optimization scheme of the invention, a mark point image of the face position of an examinee when the wearing state of VR glasses before the examination is correct is obtained, the image is set as a standard image, the image information of the mark point of the face obtained in real time is compared with the standard image to obtain the movement information of the mark point, the size of human eyes is obtained based on the image of the human eyes of the examinee collected in the wearing state before the examination, a movement threshold value is obtained based on the size of a channel in the VR glasses, whether cheating is possible for the examinee is obtained based on the movement information and the movement threshold value of the mark point, and whether the examination score of the examinee is effective is judged.
As a further optimization scheme of the present invention, specifically, the method for determining whether the examination result of the examinee is valid is completed based on the following formula, where a = { a1 × b1+ a2 × b2 i (b 1& b2 ∈ 0, 1) }, where a is an effective value, a1 is a moving percentage of a mark point relative to a moving threshold, a2 is a matching degree of voice information in audio information, and b1 and b2 are dynamic factors, and when the a value is greater than or equal to a set value, it is determined that the examinee may have a possibility of cheating, and information collected by the VR glasses is sent to a server, stored and displayed on a display terminal according to a preset manner, to obtain information indicating whether the examination result of the display terminal is valid, thereby determining whether the examination result of the examinee is valid.
As a further optimization scheme of the present invention, when matching the voice information in the audio information, the voice information acquired in all VR glasses in the same examination is ignored.
As a further optimization scheme of the invention, the VR glasses are internally provided with a camera assembly which can be lifted and rotated to move, when the wearing state of the VR glasses of an examinee before examination is obtained, the camera assembly is positioned in a channel of the eyes of the examinee corresponding to the VR glasses, and the direction of the acquisition end faces the examinee; wear the state for correct back before examination of examinee's VR glasses, the subassembly of making a video recording removes to the shell surface of VR glasses, and gathers the direction of holding the direction for keeping away from the examinee.
A second aspect of the present invention provides VR glasses, where the VR glasses include a memory and a processor, the memory includes an online examination anti-cheating method program, and when executed by the processor, the online examination anti-cheating method program implements the following steps:
obtaining face information of an examinee, and determining identity information of the examinee;
obtaining the wearing state of VR glasses of an examinee before examination;
if the wearing state of VR glasses of the examinee is correct, image information of surrounding visual angles of the examinee is obtained;
if the wearing state of the examinee VR glasses is wrong, sending a wearing error prompt until the wearing state of the examinee VR glasses is correct;
obtaining mark points of the face position of an examinee, obtaining real-time image information of the face mark points in real time, and judging the wearing state of VR glasses during examination based on the real-time image information;
acquiring audio information of the ear of the examinee in real time;
and judging whether the examination score of the examinee is effective or not based on the audio information of the ear and the wearing state of the VR glasses during examination.
As a further optimization scheme of the invention, the VR glasses at least further include a closed glasses main body and an earphone component, the closed glasses main body at least stores a channel based on the eyes of the corresponding user, and can enter the channel to collect the image information of the position of the user's face corresponding to the channel, and can move to the outside of the glasses main body to collect the image information of the front visual angle of the glasses main body.
The invention has the beneficial effects that: the visual line of the examinee is limited in a certain area through the virtual reality technology, so that the examinee cannot snoop contents outside the area, the examination state of the examinee during examination is monitored, and whether potential cheating behaviors exist is determined according to the examination state; the integration level of the VR glasses is improved, the wearing state before examination and the wearing state during examination of the VR glasses can be obtained through the camera assembly, the peripheral information of the examinee is observed and collected through the camera assembly before the examination, and a new mode is provided for examination modes of different areas of an external field; the whole content is simple in structure, convenient to operate, flexible to use and convenient for examinees to experience and use.
Drawings
Fig. 1 is a schematic flow chart illustrating a method of an online examination anti-cheating method based on VR glasses according to the present invention;
fig. 2 shows a system block diagram of VR glasses in the present invention.
Detailed Description
The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.
Example 1
Fig. 1 is a flowchart illustrating a method for preventing cheating in an online examination based on VR glasses according to an embodiment of the present invention.
As shown in fig. 1, a method for preventing cheating on an online examination based on VR glasses includes,
s102, obtaining face information of the examinee, and determining identity information of the examinee;
s104, obtaining the wearing state of VR glasses of the examinee before examination;
s1041, if the wearing state of VR glasses of the examinee is correct, obtaining image information of surrounding visual angles of the examinee;
s1042, if the wearing state of the VR glasses of the examinee is wrong, sending a wearing error prompt until the wearing state of the VR glasses of the examinee is correct;
s106, obtaining mark points of the face positions of examinees, obtaining real-time image information of the face mark points in real time, and judging the wearing state of VR glasses during examination based on the real-time image information;
s108, obtaining the audio information of the ear of the examinee in real time;
and S110, judging whether the examination score of the examinee is effective or not based on the audio information of the ear and the wearing state of the VR glasses in the examination.
It should be noted that, a group of camera assemblies capable of collecting facial information of an examinee is at least arranged on the surface of a VR glasses shell in the application, the examinee can sit on a chair and slowly pick up the VR glasses shell placed on a desktop, the facial information of the examinee is collected through the camera assemblies on the surface of the VR glasses shell, so that the identity information of the examinee is identified, and the examinee can log in or enter an examination state.
Further, based on a channel corresponding to the eyes of the examinee in the VR glasses, corresponding image information is obtained, based on the obtained image information, whether the positions of the eyes of the examinee correspond to the channel or not is judged, and based on the positions of the eyes of the examinee, whether the wearing state of the VR glasses before examination is correct or not is obtained.
It should be noted that, a channel corresponding to the eyes of the examinee is provided in the VR glasses, the eyes of the examinee are attached to one side of the channel, the test paper picture is displayed on the other side, and the corresponding test paper content is viewed through the channel, which is a structure commonly used in the VR glasses for limiting the eyes, the image information at the end of the channel is collected through a camera component in the channel, when the image information is the eye information, it is determined that the wearing is correct, and when the image information is non-eye information, it is determined that the wearing is wrong.
Further, when the wearing state of VR glasses before the examination is correct, the image information in front of the actual scene of the visual angle of the examinee is obtained, the rotation prompt is sent, the image information of the full visual angle around the examinee is obtained, the image information is sent to the server, and the image information is stored and displayed on the display terminal according to a preset mode; and if the wearing state of the VR glasses before examination is an incorrect result, playing a prompt audio, and uninterruptedly obtaining corresponding image information based on a channel corresponding to the eyes of the examinee in the VR glasses until the positions of the eyes of the examinee correspond to the channel, and keeping the set time to obtain a result that the wearing state before examination is correct.
Further, mark points of the face positions of the examinees are obtained, wherein the mark points comprise skin image information or skin image information with ink marks, real-time image information of the face mark points is obtained in real time, whether the examinees move VR glasses in the examination is judged based on the real-time image information, whether cheating is possible for the examinees is obtained, and whether the examination scores of the examinees are effective is judged.
It should be noted that, generally, skin image information can be directly photographed, and the image is used as a standard image, and in the subsequent real-time image acquisition, the obtained image is used as a reference to determine whether the VR glasses move; preferably, however, the accuracy of the determination can be increased by providing an ink mark on the skin, and the distance traveled can be obtained to determine whether the movement is a movement that causes the eye to exit the channel.
It should be noted that, in practical use, after wearing, the method should give the examinee a decision whether adjustment is needed, and if adjustment is not needed, the marking point can be pointed out on the face area through the ink pen which can move telescopically, wherein the ink should be non-pollution and easy-to-erase ink, and the face area is preferably the area covered by the VR glasses.
Further, a mark point image of the face position of the examinee when the wearing state before examination of the VR glasses of the examinee is correct is obtained, the image is set as a standard image, image information of the mark point of the face obtained in real time is compared with the standard image, movement information of the mark point is obtained, the size of human eyes is obtained based on the image of the human eyes of the examinee collected in the wearing state before examination, a movement threshold value is obtained based on the size of a channel in the VR glasses, whether cheating possibility exists in the examinee is obtained based on the movement information and the movement threshold value of the mark point, and whether the examination score of the examinee is valid is judged.
Specifically, the edge distance between the human eye edge and the channel is determined based on the image information collected in the channel, so as to obtain the moving threshold, where the moving threshold may be a plurality of values or one value, and when the moving threshold is a plurality of values, it is optimal to consider four values, where the four values represent four directions, i.e., up, down, left, and right.
Specifically, the method for determining whether the examination result of the examinee is valid is completed based on the following formula, where a = { a1 × b1+ a2 × b2 i (b 1& b2 ∈ 0, 1) }, where a is a valid value, a1 is a moving percentage of a mark point relative to a moving threshold, a2 is a matching degree of vocal information in audio information, and b1 and b2 are dynamic factors, and when the value a is greater than or equal to a set value, it is determined that the examinee may have a possibility of cheating, and information collected by the VR glasses is sent to a server, stored and displayed on a display terminal according to a preset manner, to obtain information indicating whether the examination result of the display terminal is valid, so as to determine whether the examination result of the examinee is valid.
When the voice information in the audio information is matched, the voice information acquired in all VR glasses in the same examination is ignored. That is, the proctor teacher may send out voice information that can be heard in all classrooms, and the voice information can be ignored in the voiceprint matching, and the voiceprint information with voice reminding possibly exists is obtained through the analysis of the audio information.
To be further explained, if the moving percentage of the mark point relative to the moving threshold value or the matching degree of the human voice information in the audio information is more than ninety percent, either one of b1 and b2 is 1, and the other is 0; if the moving percentage of the mark point relative to the moving threshold value or the matching degree of the voice information in the audio information is less than forty percent, both b1 and b2 are 0, otherwise, the value is taken according to b1+ b2= 1; generally, the valid value is set to 0.75, and when a is less than 0.75, the information of the examinee (including the sound information and the image information of each stage) needs to be sent to the server, displayed by the invigilator terminal, and finally judged by the background invigilator.
It should be further noted that, optimally, the method needs at least two groups of camera shooting assemblies to be matched, wherein one group of camera shooting assemblies is arranged as follows, a camera shooting assembly capable of lifting and rotating to move is arranged in the VR glasses, when the wearing state of the VR glasses of the examinee before examination is obtained, the camera shooting assembly is positioned in a channel of the corresponding eyes of the examinee in the VR glasses, and the direction of the acquisition end faces the examinee; wear the state for correct back before the examination of examinee's VR glasses, the subassembly of making a video recording removes to the shell surface of VR glasses, and gathers the direction of holding the end direction for keeping away from the direction of examinee.
Fig. 2 shows a system block diagram of VR glasses in the present invention.
VR glasses 2, the VR glasses 2 comprising a memory 21 and a processor 22, said memory 21 comprising an online examination anti-cheating method program, said online examination anti-cheating method program when executed by said processor 22 implementing the steps of:
obtaining face information of an examinee, and determining identity information of the examinee;
obtaining the wearing state of VR glasses of an examinee before examination;
if the wearing state of VR glasses of the examinee is correct, image information of surrounding visual angles of the examinee is obtained;
if the wearing state of the VR glasses of the examinee is wrong, sending a wearing error prompt until the wearing state of the VR glasses of the examinee is correct;
obtaining mark points of the face position of an examinee, obtaining real-time image information of the face mark points in real time, and judging the wearing state of VR glasses during examination based on the real-time image information;
acquiring audio information of the ear of the examinee in real time;
and judging whether the examination score of the examinee is effective or not based on the audio information of the ear and the wearing state of the VR glasses during examination.
Furthermore, VR glasses still include at least, confined glasses main part and earphone subassembly, the internal passageway based on corresponding user's eyes of at least depositing of confined glasses main part, and can enter into and gather the image information that the user face corresponds the passageway position in the passageway, and can move to outside the glasses main part, gather the image information of glasses main part place ahead visual angle.
It is further noted that the system includes a server, wherein the server and the VR glasses are coupled to each other for communication. The server and the VR glasses can be directly connected in a wireless connection mode, or the VR glasses can be connected with a computer host in a wireless connection mode or a wired connection mode, and the computer host is connected with the server, so that the VR glasses are connected with the server. The wireless connection mode includes but is not limited to wifi, bluetooth, zigbee or radio frequency connection.
In this embodiment, the VR glasses are capable of displaying virtual reality scenes based on virtual reality technology, where the virtual reality technology is a computer simulation system that can create and experience a virtual world, and it uses a computer to create a simulated environment, which is a system simulation of multi-source information-fused, interactive three-dimensional dynamic views and physical behaviors to immerse users in the environment. Meanwhile, after the user wears the VR glasses, the visible sight range is limited in a fixed area, and the user can only view the content displayed on the display interface of the VR glasses; the server is used for sending examination contents to the VR glasses according to examination requests of the VR glasses, and the VR glasses are used for receiving the examination contents sent by the server and displaying the examination contents based on the virtual reality scene so that examinees can take examinations.
When the VR glasses and the online examination anti-cheating method thereof are used, the visual line of an examinee is limited in a certain area through a virtual reality technology, so that the examinee cannot snoop contents outside the area, meanwhile, the examination state of the examinee during examination is monitored, and whether potential cheating behaviors exist is determined according to the examination state; the integration level of the VR glasses is improved, the wearing state before examination and the wearing state during examination of the VR glasses can be obtained through the camera assembly, the peripheral information of the examinee is observed and collected through the camera assembly before the examination, and a new mode is provided for examination modes of different areas of an outside field; the whole content is simple in structure, convenient to operate, flexible to use and convenient for examinees to experience and use.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only one logical function division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or in other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units; can be located in one place or distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, all functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately used as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
Those of ordinary skill in the art will understand that: all or part of the steps for realizing the method embodiments can be completed by hardware related to program instructions, the program can be stored in a computer readable storage medium, and the program executes the steps comprising the method embodiments when executed; and the aforementioned storage medium includes: a mobile storage device, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Alternatively, the integrated unit of the present invention may be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. Based on such understanding, the technical solutions of the embodiments of the present invention or portions thereof contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a removable storage device, a ROM, a RAM, a magnetic or optical disk, or various other media capable of storing program code.
Claims (10)
1. An online examination anti-cheating method based on VR glasses is characterized by comprising the following steps,
obtaining face information of an examinee, and determining identity information of the examinee;
obtaining the wearing state of VR glasses of an examinee before examination;
if the wearing state of VR glasses of the examinee is correct, image information of surrounding visual angles of the examinee is obtained;
if the wearing state of the examinee VR glasses is wrong, sending a wearing error prompt until the wearing state of the examinee VR glasses is correct;
obtaining mark points of the face position of an examinee, obtaining real-time image information of the face mark points in real time, and judging the wearing state of VR glasses during examination based on the real-time image information;
acquiring audio information of the ear of the examinee in real time;
and judging whether the examination score of the examinee is effective or not based on the audio information of the ear and the wearing state of the VR glasses during examination.
2. The VR glasses based on-line examination anti-cheating method of claim 1, wherein: corresponding image information is obtained based on a channel corresponding to the eyes of the examinee in the VR glasses, whether the positions of the eyes of the examinee correspond to the channel or not is judged based on the obtained image information, and whether the wearing state of the VR glasses before examination is correct or not is obtained based on the positions of the eyes of the examinee.
3. The VR glasses based on-line examination anti-cheating method of claim 2, wherein: when the wearing state of VR glasses of an examinee before examination is a correct result, obtaining image information in front of the examinee in an actual scene of visual angle, sending a rotation prompt, obtaining image information of the examinee around the full visual angle, sending the image information to a server, storing the image information and displaying the image information on a display terminal according to a preset mode; and if the wearing state of the VR glasses before examination is an incorrect result, playing a prompt audio, and uninterruptedly obtaining corresponding image information based on a channel corresponding to the eyes of the examinee in the VR glasses until the positions of the eyes of the examinee correspond to the channel, and keeping the set time to obtain a result that the wearing state before examination is correct.
4. The VR glasses based online examination anti-cheating method of claim 3, wherein: the method comprises the steps of obtaining mark points of the face positions of examinees, wherein the mark points comprise skin image information or skin image information with ink marks, obtaining real-time image information of the face mark points in real time, judging whether the examinees move VR glasses in an examination or not based on the real-time image information, obtaining whether cheating is possible for the examinees or not, and judging whether examination scores of the examinees are effective or not.
5. The VR glasses based method of preventing cheating on an online examination of claim 4, wherein: the method comprises the steps of obtaining a mark point image of the face position of an examinee when the wearing state of the examinee before examination is correct, setting the image as a standard image, comparing image information of a face mark point obtained in real time with the standard image to obtain movement information of the mark point, obtaining the size of human eyes based on human eye images of the examinee collected in the wearing state before examination, obtaining a movement threshold value based on the size of a channel in VR glasses, obtaining whether the examinee has cheating possibility based on the movement information and the movement threshold value of the mark point, and judging whether the examination result of the examinee is effective or not.
6. The VR glasses based online examination anti-cheating method of claim 5, wherein: specifically, the method for judging whether the examination score of the examinee is valid is based on the following formula, where a = { a1 × b1+ a2 × b2 i (b 1& b2 ∈ [ 0,1 ]) }, where a is an effective value, a1 is a moving percentage of a mark point relative to a moving threshold, a2 is a matching degree of voice information in audio information, and b1 and b2 are dynamic factors, and when the a value is greater than or equal to a set value, it is judged that the examinee may have cheating possibility, information collected by VR glasses is sent to a server, the information is stored and displayed on a display terminal according to a preset mode, and information indicating whether the score of the display terminal is valid is obtained, so as to judge whether the examination score of the examinee is valid.
7. The VR glasses based online examination anti-cheating method of claim 6, wherein: when the voice information in the audio information is matched, the voice information acquired in all VR glasses in the same examination is ignored.
8. The VR glasses based online examination anti-cheating method of claim 5, wherein: the VR glasses are internally provided with a camera assembly capable of lifting and rotating, when the wearing state of the VR glasses of an examinee before examination is obtained, the camera assembly is positioned in a channel of the eyes of the examinee corresponding to the VR glasses, and the direction of the acquisition end faces the examinee; wear the state for correct back before examination of examinee's VR glasses, the subassembly of making a video recording removes to the shell surface of VR glasses, and gathers the direction of holding the direction for keeping away from the examinee.
9. VR glasses comprising a memory and a processor, wherein the memory comprises an online examination anti-cheating method program, and wherein the online examination anti-cheating method program when executed by the processor implements the following steps:
obtaining face information of an examinee, and determining identity information of the examinee;
obtaining the wearing state of VR glasses of an examinee before examination;
if the wearing state of VR glasses of the examinee is correct, image information of surrounding visual angles of the examinee is obtained;
if the wearing state of the examinee VR glasses is wrong, sending a wearing error prompt until the wearing state of the examinee VR glasses is correct;
obtaining mark points of the face positions of examinees, obtaining real-time image information of the face mark points in real time, and judging the wearing state of VR glasses during examination based on the real-time image information;
acquiring audio information of the ear of the examinee in real time;
and judging whether the examination score of the examinee is effective or not based on the audio information of the ear and the wearing state of the VR glasses during examination.
10. The VR glasses of claim 9, wherein: VR glasses still include at least, confined glasses main part and earphone subassembly, the passageway based on corresponding user's eyes is established at least to the internal storage of confined glasses main part, and can get into gather the image information that user's face corresponds to the passageway position in the passageway, and can move to outside the glasses main part, gathers the image information of glasses main part place ahead visual angle.
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