CN113064486B - VR education training method and device based on crime scene investigation - Google Patents
VR education training method and device based on crime scene investigation Download PDFInfo
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- CN113064486B CN113064486B CN202110292600.XA CN202110292600A CN113064486B CN 113064486 B CN113064486 B CN 113064486B CN 202110292600 A CN202110292600 A CN 202110292600A CN 113064486 B CN113064486 B CN 113064486B
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Abstract
The invention discloses a VR education training method based on crime scene investigation, which comprises the steps of firstly constructing an annular wall screen, wherein an annular three-dimensional space is surrounded by the annular wall screen; constructing a crime scene environment in a virtual system, and setting an investigation toolkit; acquiring an investigation tool through an investigation toolkit, wherein a sensor is arranged on an investigation tool entity and is used for acquiring an investigation toolkit entity and the current working state of the investigation tool entity; and setting a crime scene education virtual scene in the virtual system, acquiring an exploration tool entity for interaction by a user through the exploration tool kit entity in the virtual scene in the annular three-dimensional space, analyzing the interactive operation by the virtual system, and feeding back an exploration result. By the method, the criminal scene investigation teaching environment is vivid, the immersion feeling and the teaching quality of the user are improved, and the development of investigation training in VR is facilitated.
Description
Technical Field
The application belongs to the technical field of virtual reality, and particularly relates to a VR education training method and device based on crime scene investigation.
Background
The site investigation usually refers to investigation and evidence collection of criminal crime sites. In order to find out crime facts and collect crime evidences, investigation personnel carry out field visit and investigation and inspection work on crime-related persons and events, places, articles, persons, corpses and the like by law after criminal cases occur, and the criminal lawsuit investigation personnel are an important investigation measure. The investigation task comprises finding, fixing, extracting trace evidence and other information related to crime; storing the field information; judging the case property; analyzing a criminal process; determining a detection direction and range; providing clues and evidence. The advantages and disadvantages of the investigation technology can even determine the trend of the whole case to a certain extent, and the method is an important and necessary skill for related technicians such as criminal polices, forensic doctors and the like. However, in the prior art, related technicians have irregular mastery of survey techniques and are difficult to measure, and in the training process of training survey skills, the training content is simple, the teaching method is single, the deviation degree from reality is high, the knowledge drawing of trainees is limited, and the effect of really improving the ability of the trainees is difficult to achieve, usually based on related books, experience teaching of experienced personnel, case teaching and the like.
Moreover, in the existing virtual reality training method, the interaction with the trained personnel is lacked, especially in the field of on-site investigation, the interaction between the investigation personnel and the on-site is the most basic work in the investigation process, and the conventional virtual reality training method is applied to the investigation of the crime on-site, so that the real application environment and the application of investigation tools are lacked, and therefore, the problem that the capability of the trained personnel is difficult to be really improved still exists.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a VR education training method and device based on crime scene investigation.
Specifically, the application claims a VR education training method based on crime scene investigation, which includes:
s100, constructing an annular wall screen, wherein an annular three-dimensional space is surrounded by the annular wall screen; a corresponding projector is arranged at the back of the screen of the annular wall body, the content of the screen is projected onto the screen, and a user can view the content displayed in the screen in the annular three-dimensional space;
s110, constructing a crime scene environment in a virtual system, wherein the crime scene environment comprises a background environment and an interactive environment, the background environment comprises environmental factors irrelevant to the current crime case situation, the interactive environment comprises a plurality of interactive factors, and at least one interactive factor in the plurality of interactive factors is relevant to the crime case situation;
s120, setting an exploration toolkit; the survey toolkit comprises a survey toolkit entity arranged in the annular three-dimensional space and a survey toolkit virtual object constructed in the virtual system; the survey toolkit entities comprise different types of survey tool entities for crime scene surveys; the method comprises the following steps that sensors are arranged on an exploration tool pack entity and each exploration tool entity and used for obtaining the current working states of the exploration tool pack entity and the exploration tool entities; each survey tool entity constructs a corresponding survey tool virtual object in the virtual system;
s130, setting a crime scene education virtual scene in the virtual system, interacting the user with an investigation tool kit entity and an investigation tool entity in the virtual scene in an annular three-dimensional space, acquiring the current working state of the investigation tool entity based on a sensor, and mapping interactive operation to a virtual object of the corresponding investigation tool entity; and the virtual system analyzes the interactive operation and feeds back the investigation result.
The interaction factors at least comprise an on-screen interaction factor and an off-screen interaction factor; the off-screen interaction factor comprises an entity object arranged in the annular three-dimensional space and an interaction virtual object in a virtual scene, a user interacts with the entity object of the off-screen interaction factor through an exploration tool entity, interaction operation is identified through fusion data obtained by fusing data collected by a sensor, the identified result of the interaction operation acts on the interaction virtual object in the virtual scene to trigger crime scene exploration actions, and a virtual system feeds back scene exploration data to the screen, so that crime scene exploration simulation is realized.
Wherein at least one of the plurality of interaction factors is unrelated to a crime case; and when the user interacts with at least one of the plurality of interaction factors, the interaction factors irrelevant to the crime case feed back information irrelevant to the crime case to the user.
Wherein, the user interacts with the entity object of the off-screen interaction factor through the survey tool entity, including:
the method comprises the steps of setting a sensor on an entity based on an investigation tool, obtaining a judgment result whether the investigation tool is in use and whether a use mode is correct, if the investigation tool is in use and the use mode is correct, obtaining an identification of the used investigation tool, obtaining an identification of an entity object of an interaction factor outside a screen, and feeding back a corresponding interaction result based on the identification of the investigation tool and the identification of the entity object of the interaction factor outside the screen.
Wherein, the entity object identification feedback corresponding interaction result based on survey tool identification and off-screen interaction factors comprises:
recording the survey data by the user and providing the survey data to the virtual system, and analyzing the survey data by the virtual system to obtain a final survey result; or the virtual system automatically generates the survey results.
Correspondingly, aiming at the problems in the prior art, the invention provides a VR education training device based on crime scene investigation, which comprises the following steps: the method comprises the following steps:
the display module is used for constructing an annular wall screen, and the annular wall screen surrounds an annular three-dimensional space; a corresponding projector is arranged at the back of the screen of the annular wall body, the content of the screen is projected onto the screen, and a user can view the content displayed in the screen in the annular three-dimensional space;
the system comprises a virtual system module, a crime scene environment and a display module, wherein the crime scene environment is constructed in a virtual system and comprises a background environment and an interactive environment, the background environment comprises environmental factors irrelevant to the current crime case situation, the interactive environment comprises a plurality of interactive factors, and at least one interactive factor in the interactive factors is relevant to the crime case situation;
the system comprises an investigation tool module, a virtual system and a data processing module, wherein the investigation tool module is used for setting an investigation tool pack, and the investigation tool pack comprises an investigation tool pack entity arranged in an annular three-dimensional space and an investigation tool pack virtual object constructed in the virtual system; the survey toolkit entities comprise different types of survey tool entities for crime scene surveys; the method comprises the following steps that sensors are arranged on an exploration tool pack entity and each exploration tool entity and used for obtaining the current working states of the exploration tool pack entity and the exploration tool entities; each survey tool entity constructs a corresponding survey tool virtual object in the virtual system;
the training module is used for setting a crime scene education virtual scene in the virtual system, interacting with an investigation tool packet entity and an investigation tool entity in the virtual scene by a user in an annular three-dimensional space, acquiring the current working state of the investigation tool entity based on a sensor, and mapping interactive operation to a virtual object of the corresponding investigation tool entity; and the virtual system analyzes the interactive operation and feeds back the investigation result.
The interaction factors at least comprise an on-screen interaction factor and an off-screen interaction factor; the off-screen interaction factor comprises an entity object arranged in the annular three-dimensional space and an interaction virtual object in a virtual scene, a user interacts with the entity object of the off-screen interaction factor through an exploration tool entity, interaction operation is identified through fusion data obtained by fusing data collected by a sensor, the identified result of the interaction operation acts on the interaction virtual object in the virtual scene to trigger crime scene exploration actions, and a virtual system feeds back scene exploration data to the screen, so that crime scene exploration simulation is realized.
Wherein at least one of the plurality of interaction factors is unrelated to a crime case; and when the user interacts with at least one of the plurality of interaction factors, the interaction factors irrelevant to the crime case feed back information irrelevant to the crime case to the user.
Wherein, the interactive operation of the entity object of user and the interactive factor outside the screen is discerned through the image information and the coordinate information gathered, including:
the method comprises the steps of setting a sensor on an entity based on an investigation tool, obtaining a judgment result whether the investigation tool is in use and whether a use mode is correct, if the investigation tool is in use and the use mode is correct, obtaining an identification of the used investigation tool, obtaining an identification of an entity object of an interaction factor outside a screen, and feeding back a corresponding interaction result based on the identification of the investigation tool and the identification of the entity object of the interaction factor outside the screen.
Wherein, the entity object identification feedback corresponding interaction result based on survey tool identification and off-screen interaction factors comprises:
recording the survey data by the user and providing the survey data to the virtual system, and analyzing the survey data by the virtual system to obtain a final survey result; or the virtual system automatically generates the survey results.
Based on the technical scheme, the annular wall screen is constructed, and an annular three-dimensional space is surrounded by the annular wall screen; constructing a crime scene environment in a virtual system, wherein the crime scene environment comprises a background environment and an interactive environment, the background environment comprises environmental factors irrelevant to the current crime case situation, and the interactive environment comprises a plurality of interactive factors; setting an exploration toolkit; the survey toolkit comprises a survey toolkit entity arranged in the annular three-dimensional space and a survey toolkit virtual object constructed in the virtual system; the survey toolkit entities comprise different types of survey tool entities for crime scene surveys; setting a crime scene education virtual scene in a virtual system, interacting with an investigation tool packet entity and an investigation tool entity in the virtual scene by a user in an annular three-dimensional space, acquiring the current working state of the investigation tool entity based on a sensor, and mapping interactive operation to a virtual object of the corresponding investigation tool entity; and the virtual system analyzes the interactive operation and feeds back the investigation result.
The scheme has the following advantages:
1. through setting up environment wall screen and carrying out VR virtual interaction with the user to be applied to crime scene investigation teaching with this system, improved user experience, improved teaching quality and learning efficiency.
2. Set up the interactive factor outside the screen, with reality and virtual content intercommunication, improved the user and immersed the sense to teaching effect has further been improved.
3. Set up the investigation work package, simulate the use of investigation instrument package in virtual system for the user can learn and practise the using-way of investigation instrument, is favorable to developing of reconnaissance training in the VR.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be clear that the drawings in the following description are only intended to illustrate some embodiments of the present application, and that for a person skilled in the art, it is possible to derive from these drawings, without inventive effort, technical features, connections or even method steps not mentioned in the other drawings.
Fig. 1 is a flowchart of a VR education training method based on crime scene investigation according to an embodiment of the present invention.
Fig. 2 is a block diagram of a VR educational training apparatus based on crime scene investigation according to an embodiment of the present invention.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "a" and "an" typically include at least two, but do not exclude the presence of at least one.
It should be understood that although the terms first, second, third, etc. may be used to describe XXX in the embodiments of the present application, these XXX should not be limited to these terms. These terms are only used to distinguish XXX from each other. For example, a first XXX may also be referred to as a second XXX, and similarly, a second XXX may also be referred to as a first XXX, without departing from the scope of embodiments of the present application.
The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a monitoring", depending on the context. Similarly, the phrase "if it is determined" or "if it is monitored (a stated condition or event)" may be interpreted as "when determining" or "in response to determining" or "when monitoring (a stated condition or event)" or "in response to monitoring (a stated condition or event)", depending on the context.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
As shown in fig. 1, a VR education training method based on crime scene investigation claimed in the present application includes:
s100, constructing an annular wall screen, wherein an annular three-dimensional space is surrounded by the annular wall screen; set up corresponding projecting apparatus behind the annular wall body screen, with screen content projection to the screen on, the user is in can watch the content that shows in the screen place in the annular cubical space.
The annular wall screen comprises a left screen, a right screen, an upper screen, a lower screen and a front screen; the screen is typically at a 90 degree angle to the front of the screen; in order to better accord with the habit of human eyes and improve the virtual environment immersion feeling of trained personnel, the plane included angles between the left screen and the front screen and between the front screen and the right screen are set to be 120-fold 128 degrees, the upper screen is set to be an arc, and the circle center corresponding to the arc line is 150-fold 170 degrees. Except for the lower screen, the left screen, the right screen, the upper screen and the front screen all use metal screens, and the content is displayed on the screens in a hoisting and forward projection mode; the lower screen can be used for the user to walk, and an LED screen is adopted; a protective layer is added between the lower screen and the user, and the protective layer is at least 525kg/m2The bearing capacity and the transparency of more than 90 percent provide support for users and related articles, and the users can watch the contents displayed by the LED screen through the protective layer.
S110, constructing a crime scene environment in a virtual system, wherein the crime scene environment comprises a background environment and an interactive environment, the background environment comprises environmental factors irrelevant to the current crime case situation, the interactive environment comprises a plurality of interactive factors, and at least one interactive factor in the plurality of interactive factors is relevant to the crime case situation; at least one of the plurality of interaction factors is unrelated to a crime case;
and when the user interacts with at least one of the plurality of interaction factors, the interaction factors irrelevant to the crime case feed back information irrelevant to the crime case to the user.
Background environment content is relatively fixed, a plurality of crime scenes of one type can correspond to the background environment of one type, for example, crime scenes of a traffic accident type can have various conditions, wherein the condition 1 is that casualties are caused by accidents of drunk driving of motor vehicles, the condition 2 is that property damage is caused by accidents of running red light, and the two conditions can correspond to the background environment of the same type, namely, a road background virtual reality environment. The road background virtual reality environment is irrelevant to the case of the virtual crime, and is only provided for the immersive training environment of the user, so that the background and the interactive content are mutually stripped, the updating and the maintenance of the content are facilitated, and the content development efficiency is improved.
The interactive environment at least comprises interactive factors, the interactive factors are closely related to site investigation, a user interacts with the site based on the interactive factors, the trainee obtains experience knowledge based on the interaction result, and the training instructor provides teaching for the trainee based on the interaction result. The interactive factors may also include factors unrelated to on-site surveys, and setting up complex interactive factors for different functions facilitates development of different content applications. Specifically, in the event of a drunk driving motor vehicle accident scene, one interaction factor can be set in the annular three-dimensional space as an alcohol-containing pop can, and the other interaction factor is common road stones; when the trained personnel interact with the alcohol-containing pop can, the prompt that the drunk driving possibly escapes can be obtained, and when the trained personnel interact with the common road stone, the prompt that the drunk driving possibly escapes can be obtained, and the prompt that the drunk driving possibly escapes can be obtained or can be used for interference can be obtained.
S120, setting an exploration toolkit; the survey toolkit comprises a survey toolkit entity arranged in the annular three-dimensional space and a survey toolkit virtual object constructed in the virtual system; the survey toolkit entities comprise different types of survey tool entities for crime scene surveys; the method comprises the following steps that sensors are arranged on an exploration tool pack entity and each exploration tool entity and used for obtaining the current working states of the exploration tool pack entity and the exploration tool entities; each survey tool entity constructs a corresponding survey tool virtual object in the virtual system;
the use of different survey tools is a key to the survey technology. This application is favorable to improving the investigation technique of trainee based on setting up and the simulation to the investigation instrument among the virtual reality, improves crime scene investigation education training effect. In particular, an investigation kit entity comprises a plurality of investigation tool entities, such as measurement tools, camera devices, fingerprint extraction tools, footprint acquisition devices, disassembly tools, general tools, special tools, etc. Each survey tool entity has a corresponding survey tool virtual object in the virtual system. When a user interacts with an investigation toolkit, the virtual system identifies the interaction operation of the investigation toolkit through a sensor and displays tools in the investigation toolkit to the user; when a user selects one of the survey tools, such as a measuring tool, the virtual system interacts the interactive operation with the virtual object of the measuring tool, receives survey data recorded by the user, analyzes the survey data (such as whether the survey mode is correct, whether the survey data is valid or not, and whether the survey data is accurate or not), and displays a survey result to the user. The survey tool bag entity also comprises peripheral auxiliary tool entities such as warning lines, billboards and the like.
The sensor comprises a camera sensor, a positioning sensor and the like, and identifies the user and the user action based on sensor data; the camera sensor comprises a common image sensor which can be used for shooting images of users and objects, and identifying the conditions of the personnel and the objects on site through a person identification technology and a dynamic tracking technology; preferably, the camera sensor further comprises an infrared temperature sensor for identifying the user himself. When a user interacts with an object in the annular three-dimensional space, the shielding condition exists usually, and the object and the person at different temperatures are distinguished based on the identification result of the infrared temperature sensor when the shielding occurs, so that the interaction precision of the person and the object is improved.
The positioning sensor comprises a sensor worn by a user such as a glove, a helmet, a bracelet, a finger stall, clothes and the like, and further comprises a sticking sensor stuck to the characteristic position of an object in the annular three-dimensional space. For example, in a virtual environment of a crime scene caused by a hit and run, four sticky sensors are arranged at four characteristic angles of an automobile engine hood, whether the automobile engine hood is opened or not can be judged according to the motion tracks of the sensors, a user is spatially positioned based on the sensor worn by the user, and a specific scene is set to be a position where gloves are positioned below the engine hood, so that the user is judged to open the engine hood to execute related exploration operation. Various sensors can comprehensively analyze various data based on a sensor data fusion technology, preset judgment models of a plurality of interaction events and identify interaction operation in the system operation process.
And performing fusion operation on data acquired by the positioning sensor and the camera sensor to obtain fusion data, and performing operations such as target motion recognition, motion capture and the like based on the fusion data.
S130, setting a crime scene education virtual scene in the virtual system, interacting the user with an exploration tool kit entity and an exploration tool entity in an annular three-dimensional space, acquiring the current working state of the exploration tool entity based on a sensor, and mapping interactive operation to a virtual object of the corresponding exploration tool entity; and the virtual system analyzes the interactive operation and feeds back the investigation result.
When the user is identified to interact with the investigation toolkit, the virtual system identifies the interaction operation of the investigation toolkit through the sensor, and displays tools in the investigation toolkit for the user. The method comprises the steps of setting a sensor on an entity based on an investigation tool, obtaining a judgment result whether the investigation tool is in use and whether a use mode is correct, if the investigation tool is in use and the use mode is correct, obtaining an identification of the used investigation tool, obtaining an identification of an entity object of an interaction factor outside a screen, and feeding back a corresponding interaction result based on the identification of the investigation tool and the identification of the entity object of the interaction factor outside the screen.
Further, the interaction between the user and the survey tool usually involves multiple interaction factors in the interaction environment, so that the interaction result is eventually related to the survey tool entity and the interaction factors.
The interaction factors at least comprise an on-screen interaction factor and an off-screen interaction factor; the off-screen interaction factor comprises an entity object arranged in the annular three-dimensional space and an interaction virtual object in a virtual scene, a user interacts with the entity object of the off-screen interaction factor through an exploration tool entity, interaction operation is identified through fusion data obtained by fusing data collected by a sensor, the identified result of the interaction operation acts on the interaction virtual object in the virtual scene to trigger crime scene exploration actions, and a virtual system feeds back scene exploration data to the screen, so that crime scene exploration simulation is realized.
Wherein, the user interacts with the entity object of the off-screen interaction factor through the survey tool entity, including:
the method comprises the steps of setting a sensor on an entity based on an investigation tool, obtaining a judgment result whether the investigation tool is in use and whether a use mode is correct, if the investigation tool is in use and the use mode is correct, obtaining an identification of the used investigation tool, obtaining an identification of an entity object of an interaction factor outside a screen, and feeding back a corresponding interaction result based on the identification of the investigation tool and the identification of the entity object of the interaction factor outside the screen.
In prior art VR systems, a content provider generally provides a corresponding virtual scene, and a user can interact with objects in the virtual scene, however, the virtual scene lacks reality connected with reality, and the immersion experienced by the user is limited. This application improves this technique, sets up the interactive factor outside the screen of virtual scene, and the user in annular three-dimensional space can carry out direct interaction with the interactive factor outside the screen, is showing and is improving user experience. For example, in a crime scene of a theft case, a locker entity overturned by a suspected person is arranged in an annular three-dimensional space, the locker is modeled in a virtual system, a corresponding interactive virtual object is arranged, and in the investigation and teaching process, if a user who recognizes the identity of the police checks the interactive operation of the locker fingerprint by using a tool, relevant feedback is carried out, for example, the training behavior is scored, or a fingerprint image is displayed to the user, so that the interaction between VR and realization is realized.
Example 2
As shown in fig. 2, fig. 2 is a structure diagram of a VR educational training apparatus based on crime scene investigation, which includes:
the display module is used for constructing an annular wall screen, and the annular wall screen surrounds an annular three-dimensional space; set up corresponding projecting apparatus behind the annular wall body screen, with screen content projection to the screen on, the user is in can watch the content that shows in the screen place in the annular cubical space.
The system comprises a virtual system module, a crime scene environment and a display module, wherein the crime scene environment is constructed in a virtual system and comprises a background environment and an interactive environment, the background environment comprises environmental factors irrelevant to the current crime case situation, the interactive environment comprises a plurality of interactive factors, and at least one interactive factor in the interactive factors is relevant to the crime case situation; at least one of the plurality of interaction factors is independent of a crime case.
The system comprises an investigation tool module, a virtual system and a data processing module, wherein the investigation tool module is used for setting an investigation tool pack, and the investigation tool pack comprises an investigation tool pack entity arranged in an annular three-dimensional space and an investigation tool pack virtual object constructed in the virtual system; the survey toolkit entities comprise different types of survey tool entities for crime scene surveys; the method comprises the following steps that sensors are arranged on an exploration tool pack entity and each exploration tool entity and used for obtaining the current working states of the exploration tool pack entity and the exploration tool entities; each survey tool entity builds a corresponding survey tool virtual object in the virtual system.
The training module is used for setting a crime scene education virtual scene in the virtual system, interacting with an investigation tool packet entity and an investigation tool entity in the virtual scene by a user in an annular three-dimensional space, acquiring the current working state of the investigation tool entity based on a sensor, and mapping interactive operation to a virtual object of the corresponding investigation tool entity; and the virtual system analyzes the interactive operation and feeds back the investigation result.
The interaction factors at least comprise an on-screen interaction factor and an off-screen interaction factor; the off-screen interaction factor comprises an entity object arranged in the annular three-dimensional space and an interaction virtual object in a virtual scene, a user interacts with the entity object of the off-screen interaction factor through an exploration tool entity, interaction operation is identified through fusion data obtained by fusing data collected by a sensor, the identified result of the interaction operation acts on the interaction virtual object in the virtual scene to trigger crime scene exploration actions, and a virtual system feeds back scene exploration data to the screen, so that crime scene exploration simulation is realized.
Wherein at least one of the plurality of interaction factors is unrelated to a crime case; and when the user interacts with at least one of the plurality of interaction factors, the interaction factors irrelevant to the crime case feed back information irrelevant to the crime case to the user.
Wherein, the interactive operation of the entity object of user and the interactive factor outside the screen is discerned through the image information and the coordinate information gathered, including:
the method comprises the steps of setting a sensor on an entity based on an investigation tool, obtaining a judgment result whether the investigation tool is in use and whether a use mode is correct, if the investigation tool is in use and the use mode is correct, obtaining an identification of the used investigation tool, obtaining an identification of an entity object of an interaction factor outside a screen, and feeding back a corresponding interaction result based on the identification of the investigation tool and the identification of the entity object of the interaction factor outside the screen.
Wherein, the entity object identification feedback corresponding interaction result based on survey tool identification and off-screen interaction factors comprises:
recording the survey data by the user and providing the survey data to the virtual system, and analyzing the survey data by the virtual system to obtain a final survey result; or the virtual system automatically generates the survey results.
Example 3
Example 3 demonstrates a simple process for educational training based on crime scene investigation.
Starting a virtual system to work, forming an annular three-dimensional space by a multi-surface screen, and constructing a virtual crime scene of a theft case in the annular three-dimensional space; the teacher gets into annular three-dimensional space, introduces current crime virtual scene to the student, explains the record to house layout, explains the investigation mode of key objects such as locker, floor, door handle, bed, explains the matters that the investigation process should be noted, the details of neglecting easily, and the teacher interacts with the investigation toolkit entity, and when discerning that the user interacts with the investigation toolkit, virtual system passes through sensor identification survey toolkit interactive operation, shows the instrument in the investigation toolkit to the user. The method comprises the steps that a teacher selects a fingerprint extraction tool, when a virtual system acquires that the tool is in use based on a sensor, the virtual system sends an identified use mode to an off-screen interaction factor, and based on an off-screen interaction factor entity identification, an off-screen interaction factor safety box and a door handle are determined; if the safe is provided with the fingerprint, and the door handle does not have the fingerprint, the fingerprint information set by the safe is fed back, and the door handle feeds back null information or interference information. The staff adjusts the position, relation and parameter of the site interaction factors according to the requirements, and flexibly sets different teaching scenes; through a vivid crime scene, the student learns how to carry out crime scene investigation;
after the teaching process is finished, the worker adjusts the position, the relation and the parameters of the field interaction factors according to the requirement again, for example, the fingerprint data of the storage cabinet is erased and is reset on the edge of the bed, which is different from the fact that a teacher can acquire the fingerprint data from the storage cabinet based on work, and a student can acquire the correct fingerprint only after correctly surveying various data of the bed. Different crime scenes can be set by changing parameters of interaction factors, and students can flexibly experience and learn, so that the education and training process of the virtual system is close to the real life, the interestingness of education and training is improved, the students can master learned knowledge, and the overall work efficiency of the system is improved.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
The foregoing description shows and describes several preferred embodiments of the invention, but as aforementioned, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A VR education training method based on crime scene investigation comprises the following steps:
s100, constructing an annular wall screen, wherein an annular three-dimensional space is surrounded by the annular wall screen; a corresponding projector is arranged at the back of the screen of the annular wall body, the content of the screen is projected onto the screen, and a user can view the content displayed in the screen in the annular three-dimensional space;
s110, constructing a crime scene environment in a virtual system, wherein the crime scene environment comprises a background environment and an interactive environment, the background environment comprises environmental factors irrelevant to the current crime case situation, the interactive environment comprises a plurality of interactive factors, and at least one interactive factor in the plurality of interactive factors is relevant to the crime case situation;
s120, setting an exploration toolkit; the survey toolkit comprises a survey toolkit entity arranged in the annular three-dimensional space and a survey toolkit virtual object constructed in the virtual system; the survey toolkit entities comprise different types of survey tool entities for crime scene surveys; the method comprises the following steps that sensors are arranged on an exploration tool pack entity and each exploration tool entity and used for obtaining the current working states of the exploration tool pack entity and the exploration tool entities; each survey tool entity constructs a corresponding survey tool virtual object in the virtual system;
s130, setting a crime scene education virtual scene in the virtual system, acquiring a survey tool entity for interaction by a user through a survey tool kit entity in the virtual scene in an annular three-dimensional space, acquiring the current working state of the survey tool entity based on a sensor, and mapping interactive operation to a virtual object of the corresponding survey tool entity; the virtual system analyzes the interactive operation and feeds back a survey result;
the interaction factors at least comprise an on-screen interaction factor and an off-screen interaction factor; the off-screen interaction factor comprises an entity object arranged in the annular three-dimensional space and an interaction virtual object in a virtual scene, a user interacts with the entity object of the off-screen interaction factor through an exploration tool entity, interaction operation is identified through fusion data obtained by fusing data collected by a sensor, the identified result of the interaction operation acts on the interaction virtual object in the virtual scene to trigger crime scene exploration actions, and a virtual system feeds back scene exploration data to the screen, so that crime scene exploration simulation is realized.
2. The VR educational training method based on crime scene investigation of claim 1, wherein at least one of the plurality of interaction factors is independent of crime cases; and when the user interacts with at least one of the plurality of interaction factors, the interaction factors irrelevant to the crime case feed back information irrelevant to the crime case to the user.
3. The VR educational training method based on crime scene investigation of claim 1, wherein the user interacts with the entity object of the off-screen interactive factor through an investigation tool entity, comprising:
the method comprises the steps of setting a sensor on an entity based on an investigation tool, obtaining a judgment result whether the investigation tool is in use and whether a use mode is correct, if the investigation tool is in use and the use mode is correct, obtaining an identification of the used investigation tool, obtaining an identification of an entity object of an interaction factor outside a screen, and feeding back a corresponding interaction result based on the identification of the investigation tool and the identification of the entity object of the interaction factor outside the screen.
4. The VR educational training method of claim 3, wherein the feedback of the corresponding interaction result based on the physical object identification of the survey tool identification and the off-screen interaction factors comprises:
recording the survey data by the user and providing the survey data to the virtual system, and analyzing the survey data by the virtual system to obtain a final survey result; or the virtual system automatically generates the survey results.
5. A VR education training device based on crime scene investigation includes:
the display module is used for constructing an annular wall screen, and the annular wall screen surrounds an annular three-dimensional space; a corresponding projector is arranged at the back of the screen of the annular wall body, the content of the screen is projected onto the screen, and a user can view the content displayed in the screen in the annular three-dimensional space;
the system comprises a virtual system module, a crime scene environment and a display module, wherein the crime scene environment is constructed in a virtual system and comprises a background environment and an interactive environment, the background environment comprises environmental factors irrelevant to the current crime case situation, the interactive environment comprises a plurality of interactive factors, and at least one interactive factor in the interactive factors is relevant to the crime case situation;
the system comprises an investigation tool module, a virtual system and a data processing module, wherein the investigation tool module is used for setting an investigation tool pack, and the investigation tool pack comprises an investigation tool pack entity arranged in an annular three-dimensional space and an investigation tool pack virtual object constructed in the virtual system; the survey toolkit entities comprise different types of survey tool entities for crime scene surveys; the method comprises the following steps that sensors are arranged on an exploration tool pack entity and each exploration tool entity and used for obtaining the current working states of the exploration tool pack entity and the exploration tool entities; each survey tool entity constructs a corresponding survey tool virtual object in the virtual system;
the training module is used for setting a crime scene education virtual scene in the virtual system, interacting with an investigation tool packet entity and an investigation tool entity in the virtual scene by a user in an annular three-dimensional space, acquiring the current working state of the investigation tool entity based on a sensor, and mapping interactive operation to a virtual object of the corresponding investigation tool entity; the virtual system analyzes the interactive operation and feeds back a survey result;
the interaction factors at least comprise an on-screen interaction factor and an off-screen interaction factor; the off-screen interaction factor comprises an entity object arranged in the annular three-dimensional space and an interaction virtual object in a virtual scene, a user interacts with the entity object of the off-screen interaction factor through an exploration tool entity, interaction operation is identified through fusion data obtained by fusing data collected by a sensor, the identified result of the interaction operation acts on the interaction virtual object in the virtual scene to trigger crime scene exploration actions, and a virtual system feeds back scene exploration data to the screen, so that crime scene exploration simulation is realized.
6. The VR educational training apparatus of claim 5, wherein at least one of the interactive factors is independent of a crime case; and when the user interacts with at least one of the plurality of interaction factors, the interaction factors irrelevant to the crime case feed back information irrelevant to the crime case to the user.
7. The VR educational training apparatus of claim 5, the user interacting with an entity object of an off-screen interactive factor through an investigation tool entity, comprising:
the method comprises the steps of setting a sensor on an entity based on an investigation tool, obtaining a judgment result whether the investigation tool is in use and whether a use mode is correct, if the investigation tool is in use and the use mode is correct, obtaining an identification of the used investigation tool, obtaining an identification of an entity object of an interaction factor outside a screen, and feeding back a corresponding interaction result based on the identification of the investigation tool and the identification of the entity object of the interaction factor outside the screen.
8. The VR educational training apparatus for crime scene investigation of claim 7, wherein the physical object identifier feedback based on investigation tool identifier and off-screen interaction factor corresponds to the interaction result, comprising:
recording the survey data by the user and providing the survey data to the virtual system, and analyzing the survey data by the virtual system to obtain a final survey result; or the virtual system automatically generates the survey results.
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| CN108172059A (en) * | 2018-02-28 | 2018-06-15 | 高振峰 | One kind warns tool weapons training method based on virtual reality mode police |
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| CN110738895A (en) * | 2019-09-16 | 2020-01-31 | 潘涛 | Criminal scene investigation real-scene VR comprehensive training system |
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