CN116862730A - VR holographic teaching management system - Google Patents

VR holographic teaching management system Download PDF

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Publication number
CN116862730A
CN116862730A CN202311134125.9A CN202311134125A CN116862730A CN 116862730 A CN116862730 A CN 116862730A CN 202311134125 A CN202311134125 A CN 202311134125A CN 116862730 A CN116862730 A CN 116862730A
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China
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holographic
student user
coordinate
coordinates
current
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CN116862730B (en
Inventor
冯冲
王芬
杨丽英
陈琪
李鹃冰
孟昕
贾兆颖
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Shandong Labor Vocational and Technical College
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Shandong Labor Vocational and Technical College
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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
    • G06Q50/205—Education administration or guidance
    • 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
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/31—User authentication
    • 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
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/45—Structures or tools for the administration of authentication
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

The invention discloses a VR holographic teaching management system, which relates to the technical field of holographic teaching, and the invention collects identity information data of a holographic student user of a current pre-access holographic teaching platform by arranging a holographic student module, and an information security module transmits a simulated area image of the holographic student user generated based on the identity information data of the holographic student user of the current pre-access holographic teaching platform, corresponding historical login coordinate data and activation coordinate data, on one hand, the simulated area image is transmitted, and meanwhile, the hidden trace of the login password of the holographic student user is eliminated as much as possible, and the direction of three-party cracking is led to the other places, so that the security in the password transmission process is improved, and on the other hand, the simulated area image is based on the login place of the holographic student user each time, has dynamic non-repeatability, so that three parties cannot search the generation rule based on a plurality of the simulated area images, and the security of holographic image data is further ensured.

Description

VR holographic teaching management system
Technical Field
The invention relates to the technical field of holographic teaching, in particular to a VR holographic teaching management system.
Background
Holographic projection refers to recording and reproducing a true three-dimensional image of an object using the principles of interference and diffraction. The virtual reality immersion experience manufactured by utilizing the holographic projection technology can project the scene which cannot be seen in the real scene in the form of a hologram, has the characteristics of combination of reality and illusion, being immersive, rich in information, strong in interactivity and the like, and the display technology has high simulation degree, so that the audience can feel like really being on site.
Based on the high simulation of the holographic projection technology, the holographic projection technology is widely applied to the teaching field, students use wearable equipment to download holographic image resources for learning, however, data generated by the holographic image resources in the photographing process may contain sensitive information of clients, such as facial features, and in order to prevent data leakage, encryption measures for data transmission and storage should be enhanced, and only authorized personnel can access and process the data;
at present, safety protection for image resources is to perform safety verification on a pre-downloaded student user, perform safety verification on the identity of the pre-downloaded student user in a plurality of modes such as voiceprint, iris, face and the like, and perform identity safety verification by a holographic management platform, wherein the transmitted data is hijacked by a third party in the network transmission process, and the risk of maliciously modifying key parameter information exists;
the existing VR holographic teaching management system encrypts the identity verification information of the pre-downloaded student user by using a private key in the process of transmitting the identity verification information, so that in the network transmission process, if the key is also required to be transmitted at the same time, the data and the key can be intercepted by other people, and one end of the key is leaked, so that a third party can directly acquire the decrypted identity information verification data, and finally the problem of unsafe data is caused;
in order to solve the above problems, the present invention proposes a solution.
Disclosure of Invention
The invention aims to provide a VR holographic teaching management system, which aims to solve the problems that in the prior art, the encrypted authentication information is directly encrypted in the process of transmitting the authentication information of a pre-downloaded user, and if the key is intercepted, the leakage of the authentication information of the user is directly caused to cause unsafe data;
the aim of the invention can be achieved by the following technical scheme:
a VR holographic teaching management system comprising:
the holographic storage module is used for acquiring identity information data of a holographic student user currently pre-accessing the holographic teaching platform, wherein the holographic student user refers to a student user wearing VR equipment;
the identity information data comprise an account name and an account password which are used for logging in the holographic teaching platform by a holographic student user, current login coordinate data of the holographic student user and corresponding recording time, wherein the current login coordinate data of the holographic student user comprise longitude and latitude of the position of the holographic student user when the current holographic student user is used for logging in the account name and the account password of the holographic teaching platform;
the holographic storage module is used for storing the activation coordinate data of the holographic student user, all the historical login coordinate data and the corresponding recording time thereof, wherein the activation coordinate data of the holographic student user comprises the longitude and the latitude of the position where the VR equipment is activated;
the information security module is used for ensuring the security of account password transmission of a holographic student user of the current pre-access holographic teaching platform, and generating to-be-verified data of the current holographic student user based on identity information data, activation coordinate data, all historical login coordinates and corresponding recording time of the current holographic student user, wherein the to-be-verified data comprises a to-be-verified area image of the current holographic student user, a typed account name used for logging in the holographic teaching platform and login coordinate data of the current holographic student user;
the holographic teaching platform is used for providing holographic teaching service for the holographic student users which pass through identity authentication, and comprises a quasi-verification unit which acquires the login password of the current holographic student user based on the quasi-region image of the current holographic student user and performs consistency verification on the login password.
Further, the specific generation rule of the information security module for generating the current holographic student user-simulated area image is as follows:
s11: acquiring longitude and latitude in login coordinate data of a current holographic student user carried in holographic student user identity information data of the current pre-access holographic teaching platform, recalibrating the longitude and latitude in login coordinate data of the current holographic student user as assistance basic coordinates of the current holographic student user, marking the assistance basic coordinates as P1 (A1 and B1), wherein the A1 and the B1 are the latitude and the longitude of the current position of the holographic student user respectively;
s12: acquiring longitude and latitude in the current activated coordinate data of the holographic student user, and recalibrating the longitude and latitude as auxiliary basic coordinates of the current holographic student user, wherein the auxiliary basic coordinates are marked as P2 (A2 and B2), and the A2 and the B2 are respectively latitude and longitude of the position where the VR equipment worn by the current holographic student user is activated;
s13: calculating and obtaining the linear distance of the holographic student user on the satellite map based on the current auxiliary basic coordinates and the auxiliary basic coordinates, and marking the linear distance as C1;
s14: comparing the sizes of C1, D1 and D2 to obtain the current position correction coordinates F1 (A3 and B3) of the holographic student user;
s15: acquiring all the current historical login coordinate data of the holographic student user and the corresponding recording time thereof, and recalibrating the longitude and latitude in the historical login coordinate data into the non-screened layout basic coordinates of the current holographic student user according to the distance sequence of the recording time corresponding to the historical login coordinate data from the current moment, wherein the non-screened layout basic coordinates are marked as I1 (g 1, h 1), I2 (g 2, h 2), I (gi, hi), and I is more than or equal to 1;
s16: screening all non-screened layout basic coordinates of the current holographic student user according to a certain screening rule to obtain all layout basic coordinates J1, J2, jj;
s17: all the basic layout coordinates L1, L2, and L of the current holographic student user are calculated and obtained according to a certain calculation and obtaining rule;
s18: calculating and obtaining the simulated deflection coordinates U1, U2, and Ul corresponding to the basic layout coordinates L1, L2, and Ll according to a certain simulated deflection rule;
s19: finding out corresponding points on a satellite map according to longitude and latitude of the position correction coordinates F1, the simulated deflection coordinates U1, U2, & gt and the auxiliary basic coordinates P1, and combining the points on the satellite map according to the sequence of the position correction coordinates F1, the simulated deflection coordinates U1, U2, & gt and the auxiliary basic coordinates P1 and the position correction coordinates F1 to form a graph, acquiring an area outlined by the graph on the satellite map, and generating a simulated area image of the current holographic student user by using a snapshot technology.
Further, the step of S14 specifically includes the following steps of obtaining the current position correction coordinates F1 (A3, B3) of the holographic student user:
s141: if C1 is more than or equal to D1, calculating and obtaining the auxiliary base point distance E1 of the current holographic student user by using a formula E1= (C1-D1) x alpha 1, and obtaining the position correction coordinate of the current holographic student user on a satellite map based on a straight line combining the auxiliary base coordinate P1 and the auxiliary base coordinate P2 according to the auxiliary base point distance E1, wherein the position correction coordinate is marked as F1 (A3, B3);
the current position correction coordinates F1 of the holographic student user satisfy the characteristics: a part of line segments are overlapped with a straight line based on the co-existence of the auxiliary basic coordinates P1 and the auxiliary basic coordinates P2 on the satellite map based on the current position correction coordinates F1 of the holographic student users and the co-existence of the auxiliary basic coordinates P1, and the length of the overlapped part of line segments is E1;
s142: if C1 is less than or equal to D2, calculating and obtaining the auxiliary base point distance E1 of the current holographic student user by using a formula E1=C1+ (D2-C1) x alpha 2, and obtaining the position correction coordinate of the current holographic student user on a satellite map based on a straight line combining the auxiliary base coordinate P1 and the auxiliary base coordinate P2 according to the auxiliary base point distance E1, wherein the position correction coordinate is marked as F1 (A3, B3);
the current position correction coordinates F1 of the holographic student user satisfy the characteristics: the method comprises the steps that a part of line segments are overlapped on a satellite map on the basis of a straight line which is formed by combining a current position correction coordinate F1 of a holographic student user and an auxiliary basic coordinate P1 and a straight line which is formed by combining the auxiliary basic coordinate P1 and an auxiliary basic coordinate P2, the length of the overlapped part of line segments is C1, alpha 1 and alpha 2 are respectively preset distance correction factors, and D1 and D2 are respectively preset maximum and minimum linear distance correction thresholds.
Further, the step S16 is to screen all the non-screened layout basic coordinates of the current holographic student user to obtain all the layout basic coordinates J1, J2, and the specific screening rules of the first and second aspects of Jj are as follows:
s161: sequentially calculating and obtaining linear distances of basic coordinates I1, I2 and I3, I.C., I-1 and I.C., marked as K1, K2, I.C., I-1 of the non-screened layout on a satellite map;
s162: comparing the sizes of K1 and D3, if K1 is less than or equal to D3, not performing any processing, otherwise, recalibrating the non-screened layout basic coordinates I1 and I2 to be layout basic coordinates, and marking the non-screened layout basic coordinates as J1 and J2;
s163: and sequentially comparing the sizes of K1, K2, the first-order, ki-1 and D3 according to S161 to S162 to obtain all the basic coordinates of the layout, and sequentially marking all the basic coordinates of the layout as J1, J2, the first-order and Jj, wherein J is greater than or equal to 1 and less than or equal to i according to the distance sequence of the recording time corresponding to the basic coordinates of the layout from the current moment, and D3 is a preset screening distance comparison threshold value.
Further, the step S17 is a specific calculation rule for calculating and obtaining all the layout basic coordinates L1, L2, and L of the current holographic student user as follows:
s171: according to the sequence of characters in an account password which is entered by the current holographic student user and used for logging in the holographic teaching platform, the characters in the account password are marked as K1, K2, kk;
s172: if k > j, calculating and obtaining the number N of the current pre-filling basic coordinates of the holographic student user by using a formula N1=k-j;
s173: the linear distances of the position correction coordinate F1 and the layout basic coordinate J1, the layout basic coordinate J1 and the layout basic coordinate J2, the layout basic coordinate Jj-1 and the layout basic coordinate Jj on the satellite map are respectively acquired, and the sum is marked as N1;
the straight line distances of the auxiliary basic coordinate P1 and the layout basic coordinate J1, the layout basic coordinate J1 and the layout basic coordinate J2, the layout basic coordinate Jj-1 and the layout basic coordinate Jj on the satellite map are calculated and acquired respectively, and the sum is marked as N2;
s174: calculating and obtaining the length Oo of a first simulation line segment on a satellite map of the basic coordinates of the pre-filling layout by using a formula oo=N1+o×β1×; calculating and obtaining a second fitted line segment length Qo of the pre-filling layout basic coordinates on a satellite map by using a formula Qo=N2+o×β2, wherein the value of o is 1 to N;
s175: respectively taking the current assistance basic coordinate P1 and the position correction coordinate F1 of the holographic student user as two vertexes of a triangle, respectively taking the first and second line segment lengths O1 and Q1 as the lengths of two sides of the triangle, determining the coordinate of a third vertex corresponding to the triangle on a satellite map, taking the coordinate of the third point as the corresponding filling basic coordinate when o=1, and recalibrating the coordinate as the basic coordinate of the layout, and marking as Jj +1; it should be noted here that the linear distance between the auxiliary base coordinate P1 and the third vertex in the triangle is O1;
s176: according to S175, the corresponding layout basic coordinates J1, J2, J, ji+1, ji+2, are obtained through calculation when o=1, o=2, ji+2, o=n, and the layout basic coordinates J1, j+2, ji+1, ji+2 are re-labeled as L1, L2, L, 1.ltoreq.l.ltoreq.i+n;
s177: otherwise, the first k layout basic coordinates J1, J2, and Jk are truncated in the layout basic coordinates J1, J2, and Jj according to k, and are recalibrated to be L1, L2, L, and 1.ltoreq.l.ltoreq.k.
Further, in S18, the specific deviation rules of the fitting deviation coordinates U1, U2, and Ul corresponding to the obtained layout basic coordinates L1, L2, and L are calculated as follows:
s181: obtaining code values corresponding to characters K1, K2, and Kk by referring to an ASCII code table, and marking the code values as M1, M2, and Mk;
acquiring longitude and latitude of layout basic coordinates L1, L2, and Ll, respectively labeled R1, R2, R, and T1, T2, and Tl;
s182: calculating to obtain a simulated deflection longitude of the layout basic coordinate L1 by using a formula R1=M1×λ1+R1, and calculating to obtain a simulated deflection latitude of the layout basic coordinate L1 by using a formula R2=M1×λ2+R2 according to a simulated deflection coordinate U1 corresponding to the layout basic coordinate L1, wherein λ1 and λ2 are preset simulated deflection longitude and latitude adjustment factors respectively;
s183: the pseudo bias coordinates U1, U2, ul corresponding to the layout basic coordinates L1, L2, L are calculated and acquired in S181 to S182.
Further, the activation coordinate data is acquired and stored by the VR device when the VR device is activated.
Further, the recording time corresponding to the current login coordinate data of the pre-holographic student user refers to the time when the longitude and latitude of the position of the holographic student user are obtained; the longitude and latitude of the position of the holographic student user are based on the position of the VR device on which the holographic student user is wearing.
Furthermore, the account number password of the holographic student user is a 10-16-bit character consisting of a case letter, a number and a special symbol.
Further, the VR device is VR glasses.
Furthermore, the holographic teaching platform further comprises a holographic service unit, wherein a user in the holographic service unit records holographic image resources for the holographic student users to download and watch in advance.
The invention has the beneficial effects that:
according to the invention, the holographic student module is arranged to collect the identity information data of the holographic student user of the current pre-access holographic teaching platform, and the information security module is used for transmitting the simulated area image of the holographic student user generated based on the identity information data of the holographic student user of the current pre-access holographic teaching platform, the corresponding historical login coordinate data and the activation coordinate data, so that the hidden trace of the login password of the holographic student user is eliminated as much as possible, and the direction of three-party cracking is guided to the other place, thereby improving the security in the password transmission process, and on the other hand, the simulated area image is based on the login place of the holographic student user each time and has dynamic non-repeatability, so that the three parties cannot search the generation rule based on a plurality of simulated area images, and the security of the holographic image data is further ensured;
according to the invention, the authentication unit extracts the corresponding login password based on the current simulated area image of the holographic student user to authenticate the identity of the holographic student user, so that the reliability of identity authentication of the holographic student user is improved.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a system block diagram of the present invention;
fig. 2 is a system flow diagram of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, a VR holographic teaching management system includes a holographic student module, a holographic storage module, an information security module, a holographic projection module, and a holographic teaching platform;
the holographic student module is used for collecting identity information data of a holographic student user currently pre-accessing the holographic teaching platform, the holographic student user specifically refers to a user wearing VR equipment, and in the embodiment, the VR equipment is VR eyes;
the identity information data comprise an account name and an account password which are used for logging in the holographic teaching platform by a holographic student user, current login coordinate data of the holographic student user and corresponding recording time, wherein the current login coordinate data of the holographic student user comprise longitude and latitude of the position of the holographic student user when the current holographic student user is used for logging in the account name and the account password of the holographic teaching platform;
the recording time corresponding to the current pre-holographic student user login coordinate data refers to the moment when the longitude and latitude of the position where the holographic student user is located are obtained;
the longitude and latitude of the position of the holographic student user are based on the position of the VR device worn by the holographic student user;
in the embodiment, the account number password of the holographic student user is a 10-16-bit character consisting of a case letter, a number and a special symbol;
the holographic storage module stores the activation coordinate data of the holographic student user, all the historical login coordinate data and the corresponding recording time thereof, wherein the activation coordinate data of the holographic student user comprises the longitude and the latitude of the position where the activation VR equipment is located; when the VR equipment is activated, the VR equipment acquires and stores the activation coordinate data;
the holographic student module transmits identity information data of a holographic student user currently pre-accessing the holographic teaching platform to the information security module;
the information security module is used for ensuring the safety of the transmission of the identity information data of the holographic student user of the current pre-access holographic teaching platform, and the information security module generates a position coordinate request instruction after receiving the identity information data of the holographic student user of the current pre-access holographic teaching platform transmitted by the holographic student module and transmits the position coordinate request instruction to the holographic storage module;
the holographic storage module acquires the current active coordinate data, all the historical login coordinate data and the corresponding recording time of the holographic student user stored in the holographic storage module after receiving the position coordinate request instruction transmitted by the information security module, and transmits the current active coordinate data, all the historical login coordinate data and the corresponding recording time of the holographic student user to the information security module;
the information security module receives the current activation coordinate data of the holographic student user, all the historical login coordinate data and the corresponding recording time transmitted by the holographic storage module, and then generates a simulated area image of the current holographic student user according to the activation coordinate data and the corresponding recording time and the identity information data of the holographic student user currently pre-accessing the holographic teaching platform, wherein the simulated area image is specifically as follows:
s11: acquiring longitude and latitude in login coordinate data of a current holographic student user carried in holographic student user identity information data of the current pre-access holographic teaching platform, recalibrating the longitude and latitude in login coordinate data of the current holographic student user as assistance basic coordinates of the current holographic student user, marking the assistance basic coordinates as P1 (A1 and B1), wherein the A1 and the B1 are the latitude and the longitude of the current position of the holographic student user respectively;
s12: acquiring longitude and latitude in the current activated coordinate data of the holographic student user, and recalibrating the longitude and latitude as auxiliary basic coordinates of the current holographic student user, wherein the auxiliary basic coordinates are marked as P2 (A2 and B2), and the A2 and the B2 are respectively latitude and longitude of the position where the VR equipment worn by the current holographic student user is activated;
s13: calculating and obtaining the linear distance of the holographic student user on the satellite map based on the current auxiliary basic coordinates and the auxiliary basic coordinates, and marking the linear distance as C1;
s14: comparing the sizes of C1, D1 and D2 to obtain the current position correction coordinates F1 (A3 and B3) of the holographic student user, wherein D1 and D2 are respectively preset maximum and minimum thresholds for linear distance component correction:
s141: if C1 is more than or equal to D1, calculating and obtaining the auxiliary base point distance E1 of the current holographic student user by using a formula E1= (C1-D1) x alpha 1, and obtaining the position correction coordinate of the current holographic student user on a satellite map based on a straight line combining the auxiliary base coordinate P1 and the auxiliary base coordinate P2 according to the auxiliary base point distance E1, wherein the position correction coordinate is marked as F1 (A3, B3);
the current position correction coordinates F1 of the holographic student user satisfy the characteristics: a part of line segments are overlapped with a straight line based on the co-existence of the auxiliary basic coordinates P1 and the auxiliary basic coordinates P2 on the satellite map based on the current position correction coordinates F1 of the holographic student users and the co-existence of the auxiliary basic coordinates P1, and the length of the overlapped part of line segments is E1;
s142: if C1 is less than or equal to D2, calculating and obtaining the auxiliary base point distance E1 of the current holographic student user by using a formula E1=C1+ (D2-C1) x alpha 2, and obtaining the position correction coordinate of the current holographic student user on a satellite map based on a straight line combining the auxiliary base coordinate P1 and the auxiliary base coordinate P2 according to the auxiliary base point distance E1, wherein the position correction coordinate is marked as F1 (A3, B3);
the current position correction coordinates F1 of the holographic student user satisfy the characteristics: a part of line segments are overlapped with a straight line based on the co-existence of the auxiliary basic coordinates P1 and the auxiliary basic coordinates P2 on a satellite map based on the current position correction coordinates F1 and the auxiliary basic coordinates P1 of the holographic student user, the length of the overlapped part of line segments is C1, and alpha 1 and alpha 2 are respectively preset distance correction factors;
s15: acquiring all the current historical login coordinate data of the holographic student user and the corresponding recording time thereof, and recalibrating longitude and latitude in the historical login coordinate data into the non-screened layout basic coordinate of the current holographic student user according to the distance sequence of the recording time corresponding to the historical login coordinate data from the current moment, wherein the recording time corresponding to the non-screened layout basic coordinate I1 is farthest from the current moment, and the recording time corresponding to the non-screened layout basic coordinate Ii is nearest to the current moment, and the recording time is marked as I1 (g 1, h 1), I2 (g 2, h 2),. In (gi, hi);
s16: and screening all the non-screened layout basic coordinates of the current holographic student user according to a certain screening rule to obtain all the layout basic coordinates J1, J2, jj:
s161: sequentially calculating and obtaining linear distances of basic coordinates I1, I2 and I3, I.C., I-1 and I.C., marked as K1, K2, I.C., I-1 of the non-screened layout on a satellite map;
s162: comparing the sizes of K1 and D3, if K1 is less than or equal to D3, not performing any processing, otherwise, recalibrating the non-screened layout basic coordinates I1 and I2 to be layout basic coordinates, and marking the non-screened layout basic coordinates as J1 and J2;
s163: sequentially comparing the sizes of K1, K2, the first-order, ki-1 and D3 according to S161 to S162 to obtain all layout basic coordinates, and sequentially marking all the layout basic coordinates as J1, J2, the first-order and Jj, wherein J is more than or equal to 1 and less than or equal to i according to the distance sequence of the recording time corresponding to the layout basic coordinates from the current moment, and D3 is a preset screening distance comparison threshold;
s17: all the basic layout coordinates L1, L2, and Ll of the current holographic student user are calculated and acquired according to a certain calculation and acquisition rule, and the specific steps are as follows:
s171: according to the sequence of characters in an account password which is entered by the current holographic student user and used for logging in the holographic teaching platform, the characters in the account password are marked as K1, K2, kk;
s172: if k > j, calculating and obtaining the number N of the current pre-filling basic coordinates of the holographic student user by using a formula N1=k-j;
s173: the linear distances of the position correction coordinate F1 and the layout basic coordinate J1, the layout basic coordinate J1 and the layout basic coordinate J2, the layout basic coordinate Jj-1 and the layout basic coordinate Jj on the satellite map are respectively acquired, and the sum is marked as N1;
the straight line distances of the auxiliary basic coordinate P1 and the layout basic coordinate J1, the layout basic coordinate J1 and the layout basic coordinate J2, the layout basic coordinate Jj-1 and the layout basic coordinate Jj on the satellite map are calculated and acquired respectively, and the sum is marked as N2;
s174: calculating and obtaining the length Oo of a first simulation line segment on a satellite map of the basic coordinates of the pre-filling layout by using a formula oo=N1+o×β1×;
calculating and obtaining a second fitted line segment length Qo of the pre-filling layout basic coordinates on a satellite map by using a formula Qo=N2+o×β2, wherein the value of o is 1 to N;
s175: respectively taking the current assistance basic coordinate P1 and the position correction coordinate F1 of the holographic student user as two vertexes of a triangle, respectively taking the first and second line segment lengths O1 and Q1 as the lengths of two sides of the triangle, determining the coordinate of a third vertex corresponding to the triangle on a satellite map, taking the coordinate of the third point as the corresponding filling basic coordinate when o=1, and recalibrating the coordinate as the basic coordinate of the layout, and marking as Jj +1; it should be noted here that the linear distance between the auxiliary base coordinate P1 and the third vertex in the triangle is O1;
s176: according to S175, the corresponding layout basic coordinates J1, J2, J, ji+1, ji+2, are obtained through calculation when o=1, o=2, ji+2, o=n, and the layout basic coordinates J1, j+2, ji+1, ji+2 are re-labeled as L1, L2, L, 1.ltoreq.l.ltoreq.i+n;
s177: otherwise, the first k layout basic coordinates J1, J2, jk are intercepted in the layout basic coordinates J1, J2, jk and Jj according to k, and are recalibrated to be L1, L2, L,1 is more than or equal to L is less than or equal to k;
s18: according to a certain deviation-simulating rule, calculating and obtaining deviation-simulating coordinates U1, U2, U.I. corresponding to basic layout coordinates L1, L2, L.I. specifically as follows:
s181: obtaining code values corresponding to characters K1, K2, and Kk by referring to an ASCII code table, and marking the code values as M1, M2, and Mk;
acquiring longitude and latitude of layout basic coordinates L1, L2, and Ll, respectively labeled R1, R2, R, and T1, T2, and Tl;
s182: calculating to obtain a simulated deflection longitude of the layout basic coordinate L1 by using a formula R1=M1×λ1+R1, and calculating to obtain a simulated deflection latitude of the layout basic coordinate L1 by using a formula R2=M1×λ2+R2 according to a simulated deflection coordinate U1 corresponding to the layout basic coordinate L1, wherein λ1 and λ2 are preset simulated deflection longitude and latitude adjustment factors respectively;
s183: calculating and obtaining simulated deflection coordinates U1, U2, U.I. and U.I. corresponding to the basic coordinates L1, L2, L.I. of the layout according to S181 to S182;
s19: finding out corresponding points on a satellite map according to longitude and latitude of the position correction coordinates F1, the simulated deflection coordinates U1, U2, & gt and Ul and the auxiliary basic coordinates P1, and combining the points on the satellite map according to the sequence of the position correction coordinates F1, the simulated deflection coordinates U1, U2, & gt and Ul, the auxiliary basic coordinates P1 and the position correction coordinates F1 to form a graph, obtaining a region outlined by the graph on the satellite map and generating a simulated region image of the current holographic student user by using a snapshot technology;
the information security module generates current simulated verification data of the holographic student user according to the current simulated area image of the holographic student user, the account name of the current holographic student user which is typed in to log in the holographic teaching platform and the current login coordinate data of the holographic student user, and transmits the current simulated verification data to the holographic teaching platform;
the holographic teaching platform is used for providing holographic teaching service for the holographic student users which pass through the identity authentication and comprises a simulation authentication unit, a simulation storage unit and a holographic service unit;
the simulated storage unit stores the account name and the account password of all current holographic student users which are authorized and authenticated to allow downloading of holographic teaching image resources, the corresponding activation coordinate data of the wearing VR equipment, all historical login coordinate data and the corresponding recording time;
the holographic teaching platform receives the current virtual verification data of the holographic student user transmitted by the information security module and then transmits the current virtual verification data to a virtual authentication unit, and the virtual authentication unit matches an account password corresponding to the same account name, activation coordinate data corresponding to the wearing VR device, all historical login coordinate data and corresponding recording time in a virtual storage unit according to the account name of the current holographic student user carried in the virtual authentication unit;
according to the account password matched and consistent with the current holographic student user account name, the activation coordinate data corresponding to the wearable VR equipment, all the historical login coordinate data and the corresponding recording time, the login password of the current holographic student user is extracted from the simulated area image of the current holographic student user based on the login coordinate data of the current holographic student user, the extracted login password of the current holographic student user is compared with the account password corresponding to the matched and consistent account name in consistency, and after the comparison is successful, the simulated authentication unit generates an authentication passing instruction and transmits the authentication passing instruction to the holographic service unit;
the holographic service unit receives the authentication passing instruction transmitted by the authentication unit and opens the authority of downloading the holographic image to the current holographic student user;
the holographic service unit stores holographic image resources which are recorded in advance and are provided for holographic student users to download and watch;
the holographic projection module is used for generating holographic images in reality based on holographic image resources and realizing virtual teaching;
in the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely illustrative and explanatory of the invention, as various modifications and additions may be made to the particular embodiments described, or in a similar manner, by those skilled in the art, without departing from the scope of the invention or exceeding the scope of the invention as defined in the claims.
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.

Claims (11)

1. A VR holographic teaching management system, comprising:
the holographic storage module is used for acquiring identity information data of a holographic student user currently pre-accessing the holographic teaching platform, wherein the holographic student user refers to a student user wearing VR equipment;
the identity information data comprise an account name and an account password which are used for logging in the holographic teaching platform by a holographic student user, current login coordinate data of the holographic student user and corresponding recording time, wherein the current login coordinate data of the holographic student user comprise longitude and latitude of the position of the holographic student user when the current holographic student user is used for logging in the account name and the account password of the holographic teaching platform;
the holographic storage module is used for storing the activation coordinate data of the holographic student user, all the historical login coordinate data and the corresponding recording time thereof, wherein the activation coordinate data of the holographic student user comprises the longitude and the latitude of the position where the VR equipment is activated;
the information security module is used for ensuring the security of account password transmission of a holographic student user of the current pre-access holographic teaching platform, and generating to-be-verified data of the current holographic student user based on identity information data, activation coordinate data, all historical login coordinates and corresponding recording time of the current holographic student user, wherein the to-be-verified data comprises a to-be-verified area image of the current holographic student user, a typed account name used for logging in the holographic teaching platform and login coordinate data of the current holographic student user;
the holographic teaching platform is used for providing holographic teaching service for the holographic student users which pass through identity authentication, and comprises a quasi-verification unit which acquires the login password of the current holographic student user based on the quasi-region image of the current holographic student user and performs consistency verification on the login password.
2. The VR holographic teaching management system of claim 1, wherein the specific generation rules for generating the current holographic student user-simulated area image by the information security module are as follows:
s11: acquiring longitude and latitude in login coordinate data of a current holographic student user carried in holographic student user identity information data of the current pre-access holographic teaching platform, recalibrating the longitude and latitude in login coordinate data of the current holographic student user as assistance basic coordinates of the current holographic student user, marking the assistance basic coordinates as P1 (A1 and B1), wherein the A1 and the B1 are the latitude and the longitude of the current position of the holographic student user respectively;
s12: acquiring longitude and latitude in the current activated coordinate data of the holographic student user, and recalibrating the longitude and latitude as auxiliary basic coordinates of the current holographic student user, wherein the auxiliary basic coordinates are marked as P2 (A2 and B2), and the A2 and the B2 are respectively latitude and longitude of the position where the VR equipment worn by the current holographic student user is activated;
s13: calculating and obtaining the linear distance of the holographic student user on the satellite map based on the current auxiliary basic coordinates and the auxiliary basic coordinates, and marking the linear distance as C1;
s14: comparing the sizes of C1, D1 and D2 to obtain the current position correction coordinates F1 (A3 and B3) of the holographic student user;
s15: acquiring all the current historical login coordinate data of the holographic student user and the corresponding recording time thereof, and recalibrating the longitude and latitude in the historical login coordinate data into the non-screened layout basic coordinates of the current holographic student user according to the distance sequence of the recording time corresponding to the historical login coordinate data from the current moment, wherein the non-screened layout basic coordinates are marked as I1 (g 1, h 1), I2 (g 2, h 2), I (gi, hi), and I is more than or equal to 1;
s16: screening all non-screened layout basic coordinates of the current holographic student user according to a certain screening rule to obtain all layout basic coordinates J1, J2, jj;
s17: all the basic layout coordinates L1, L2, and L of the current holographic student user are calculated and obtained according to a certain calculation and obtaining rule;
s18: calculating and obtaining the simulated deflection coordinates U1, U2, and Ul corresponding to the basic layout coordinates L1, L2, and Ll according to a certain simulated deflection rule;
s19: finding out corresponding points on a satellite map according to longitude and latitude of the position correction coordinates F1, the simulated deflection coordinates U1, U2, & gt and the auxiliary basic coordinates P1, and combining the points on the satellite map according to the sequence of the position correction coordinates F1, the simulated deflection coordinates U1, U2, & gt and the auxiliary basic coordinates P1 and the position correction coordinates F1 to form a graph, acquiring an area outlined by the graph on the satellite map, and generating a simulated area image of the current holographic student user by using a snapshot technology.
3. The VR hologram teaching management system according to claim 2, wherein the step of S14 obtaining the current location correction coordinates F1 (A3, B3) of the hologram student user comprises the following steps:
s141: if C1 is more than or equal to D1, calculating and obtaining the auxiliary base point distance E1 of the current holographic student user by using a formula E1= (C1-D1) x alpha 1, and obtaining the position correction coordinate of the current holographic student user on a satellite map based on a straight line combining the auxiliary base coordinate P1 and the auxiliary base coordinate P2 according to the auxiliary base point distance E1, wherein the position correction coordinate is marked as F1 (A3, B3);
the current position correction coordinates F1 of the holographic student user satisfy the characteristics: a part of line segments are overlapped with a straight line based on the co-existence of the auxiliary basic coordinates P1 and the auxiliary basic coordinates P2 on the satellite map based on the current position correction coordinates F1 of the holographic student users and the co-existence of the auxiliary basic coordinates P1, and the length of the overlapped part of line segments is E1;
s142: if C1 is less than or equal to D2, calculating and obtaining the auxiliary base point distance E1 of the current holographic student user by using a formula E1=C1+ (D2-C1) x alpha 2, and obtaining the position correction coordinate of the current holographic student user on a satellite map based on a straight line combining the auxiliary base coordinate P1 and the auxiliary base coordinate P2 according to the auxiliary base point distance E1, wherein the position correction coordinate is marked as F1 (A3, B3);
the current position correction coordinates F1 of the holographic student user satisfy the characteristics: the method comprises the steps that a part of line segments are overlapped on a satellite map on the basis of a straight line which is formed by combining a current position correction coordinate F1 of a holographic student user and an auxiliary basic coordinate P1 and a straight line which is formed by combining the auxiliary basic coordinate P1 and an auxiliary basic coordinate P2, the length of the overlapped part of line segments is C1, alpha 1 and alpha 2 are respectively preset distance correction factors, and D1 and D2 are respectively preset maximum and minimum linear distance correction thresholds.
4. The VR holographic teaching management system of claim 2, wherein the specific screening rule of S16 to screen all the non-screened layout base coordinates of the current holographic student user to obtain all the layout base coordinates J1, J2, and Jj is as follows:
s161: sequentially calculating and obtaining linear distances of basic coordinates I1, I2 and I3, I.C., I-1 and I.C., marked as K1, K2, I.C., I-1 of the non-screened layout on a satellite map;
s162: comparing the sizes of K1 and D3, if K1 is less than or equal to D3, not performing any processing, otherwise, recalibrating the non-screened layout basic coordinates I1 and I2 to be layout basic coordinates, and marking the non-screened layout basic coordinates as J1 and J2;
s163: and sequentially comparing the sizes of K1, K2, the first-order, ki-1 and D3 according to S161 to S162 to obtain all the basic coordinates of the layout, and sequentially marking all the basic coordinates of the layout as J1, J2, the first-order and Jj, wherein J is greater than or equal to 1 and less than or equal to i according to the distance sequence of the recording time corresponding to the basic coordinates of the layout from the current moment, and D3 is a preset screening distance comparison threshold value.
5. The VR holographic teaching management system of claim 2, wherein the specific calculation rule for calculating and obtaining all the layout basic coordinates L1, L2, and/or Ll of the current holographic student user at S17 is as follows:
s171: according to the sequence of characters in an account password which is entered by the current holographic student user and used for logging in the holographic teaching platform, the characters in the account password are marked as K1, K2, kk;
s172: if k > j, calculating and obtaining the number N of the current pre-filling basic coordinates of the holographic student user by using a formula N1=k-j;
s173: the linear distances of the position correction coordinate F1 and the layout basic coordinate J1, the layout basic coordinate J1 and the layout basic coordinate J2, the layout basic coordinate Jj-1 and the layout basic coordinate Jj on the satellite map are respectively acquired, and the sum is marked as N1;
the straight line distances of the auxiliary basic coordinate P1 and the layout basic coordinate J1, the layout basic coordinate J1 and the layout basic coordinate J2, the layout basic coordinate Jj-1 and the layout basic coordinate Jj on the satellite map are calculated and acquired respectively, and the sum is marked as N2;
s174: calculating and obtaining the length Oo of a first simulation line segment on a satellite map of the basic coordinates of the pre-filling layout by using a formula oo=N1+o×β1×; calculating and obtaining a second fitted line segment length Qo of the pre-filling layout basic coordinates on a satellite map by using a formula Qo=N2+o×β2, wherein the value of o is 1 to N;
s175: respectively taking the current assistance basic coordinate P1 and the position correction coordinate F1 of the holographic student user as two vertexes of a triangle, respectively taking the first and second line segment lengths O1 and Q1 as the lengths of two sides of the triangle, determining the coordinate of a third vertex corresponding to the triangle on a satellite map, taking the coordinate of the third point as the corresponding filling basic coordinate when o=1, and recalibrating the coordinate as the basic coordinate of the layout, and marking as Jj +1; it should be noted here that the linear distance between the auxiliary base coordinate P1 and the third vertex in the triangle is O1;
s176: according to S175, the corresponding layout basic coordinates J1, J2, J, ji+1, ji+2, are obtained through calculation when o=1, o=2, ji+2, o=n, and the layout basic coordinates J1, j+2, ji+1, ji+2 are re-labeled as L1, L2, L, 1.ltoreq.l.ltoreq.i+n;
s177: otherwise, the first k layout basic coordinates J1, J2, and Jk are truncated in the layout basic coordinates J1, J2, and Jj according to k, and are recalibrated to be L1, L2, L, and 1.ltoreq.l.ltoreq.k.
6. The VR holographic teaching management system of claim 2, wherein the specific deviation rules for calculating and acquiring the layout basic coordinates L1, L2, and the deviation coordinates U1, U2, and Ul corresponding to the S18 are as follows:
s181: obtaining code values corresponding to characters K1, K2, and Kk by referring to an ASCII code table, and marking the code values as M1, M2, and Mk;
acquiring longitude and latitude of layout basic coordinates L1, L2, and Ll, respectively labeled R1, R2, R, and T1, T2, and Tl;
s182: calculating to obtain a simulated deflection longitude of the layout basic coordinate L1 by using a formula R1=M1×λ1+R1, and calculating to obtain a simulated deflection latitude of the layout basic coordinate L1 by using a formula R2=M1×λ2+R2 according to a simulated deflection coordinate U1 corresponding to the layout basic coordinate L1, wherein λ1 and λ2 are preset simulated deflection longitude and latitude adjustment factors respectively;
s183: the pseudo bias coordinates U1, U2, ul corresponding to the layout basic coordinates L1, L2, L are calculated and acquired in S181 to S182.
7. The VR holographic teaching management system of claim 1, wherein the activation coordinate data is acquired and stored by the VR device upon activation of the VR device.
8. The VR holographic teaching management system of claim 1, wherein the recording time corresponding to the current pre-holographic student user login coordinate data refers to a time when the longitude and latitude of the location where the holographic student user is located are obtained; the longitude and latitude of the position of the holographic student user are based on the position of the VR device on which the holographic student user is wearing.
9. The VR holographic teaching management system of claim 1, wherein said holographic student user's account number and password is a 10-16 digit character consisting of case letters, numbers and special symbols.
10. The VR holographic teaching management system of claim 1, in which the VR device is a VR glasses.
11. The VR holographic teaching management system of claim 1, wherein the holographic teaching platform further comprises a holographic service unit, and wherein a user in the holographic service unit has holographic image resources recorded in advance for a holographic student user to download and view.
CN202311134125.9A 2023-09-05 2023-09-05 VR holographic teaching management system Active CN116862730B (en)

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