CN104331929B - Scene of a crime restoring method based on video map and augmented reality - Google Patents
Scene of a crime restoring method based on video map and augmented reality Download PDFInfo
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- CN104331929B CN104331929B CN201410594135.5A CN201410594135A CN104331929B CN 104331929 B CN104331929 B CN 104331929B CN 201410594135 A CN201410594135 A CN 201410594135A CN 104331929 B CN104331929 B CN 104331929B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T19/00—Manipulating 3D models or images for computer graphics
- G06T19/20—Editing of 3D images, e.g. changing shapes or colours, aligning objects or positioning parts
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
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- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/011—Arrangements for interaction with the human body, e.g. for user immersion in virtual reality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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Abstract
The present invention relates to urban safety management field, specifically discloses a kind of scene of a crime restoring method based on video map and augmented reality, including：Based on spatial positional information, the city video monitoring network of coordinatograph is established, obtains the video for including positional information, and each video monitoring equipment and data server is interrelated；When video object occurs, the geographic coordinate values of video object different frame in city video monitoring network is obtained, forms the motion track of video object；Video and video object are projected on electronic map, form the city video map of three-dimensional；According to the real scene of video and video object on the video map of city, virtual objects are established, virtual objects are merged with the real scene of city video map；By the presentation of information of augmented reality to user, with user mutual, enhancement information is converted.The present invention is combined video map with the technology of augmented reality so that scene of a crime effective reproduction true to nature directly perceived, effective foundation is provided to solve a case.
Description
Technical field
The present invention relates to urban safety management technical field, more particularly to a kind of criminal based on video map and augmented reality
The live restoring method of crime.
Background technology
Scene of a crime is reappeared by technological means, handles a case in public security, is court's evidence obtaining, significant in training and teaching.
However, the methods of means taken at present image typically by tradition, take pictures and draw, has certain limitation, example
Such as can not intuitively the spatial relationship between represented object, need to add a large amount of explanatory notes explain, can not reflect it is live three-dimensional true
Actual effect fruit, Interactive control can not be responded, be helpless etc. for reappearing simulation crime that personage and scene combine.
And prior art can capture video data by video monitoring, then by video mapping and coordinatograph, will monitor
Video presses its locus, projects on electronic map, forms video map, and can be carried out according to video content and locus
Interactive query and tracing and positioning destination object.
In addition, augmented reality is to combine the technologies such as computer graphics, image procossing, machine vision, pass through display
The equipment such as equipment, graphics device, sensor, tracker, interactive tool, using virtual image, video and text information come to true
A kind of technology that real field scape is strengthened, realizes the fusion of real world and virtual world, make user such as in true environment from
Right real-time, interactive.
Therefore, video surveillance network is combined with augmented reality, can intuitively shows the true of scene of a crime
Actual effect fruit and spatial relationship, reappear crime scene.
The content of the invention
It is contemplated that overcome true effect, reflection object that the technology of existing scene of a crime reduction can not show intuitively it
Between the technological deficiency such as spatial relationship, there is provided a kind of scene of a crime restoring method based on video map and augmented reality.
To achieve the above object, the present invention uses following technical scheme：The present invention provides existing with enhancing based on video map
Real scene of a crime restoring method, comprises the following steps：
S1, based on spatial positional information, establish the city video monitoring network of coordinatograph, obtain regarding comprising positional information
Frequently, it is and each video monitoring equipment and data server is interrelated；
S2, the geographic coordinate values for obtaining video object different frame in the city video monitoring network, are regarded described in formation
The motion track of frequency target；
S3, based on the spatial positional information, the video and the video object are projected on electronic map, and will
The video and the video object carry out angular transformation and stretched vertically processing, form the city video map of three-dimensional；
S4, the real scene according to the video and the video object on the video map of city, establish comprising enhancing
The virtual objects of information, the virtual objects are merged with the real scene on the city video map, carry out augmented reality；
S5, by the presentation of information of the augmented reality to user, and with the user mutual, according to interactive information convert institute
State enhancement information.
In some embodiments, the step S1 includes following steps：
S11, mapping obtain the geographical coordinate of each video monitoring equipment in city, using each video monitoring equipment in
The heart, according to monitoring range, establish the space coordinates of video surveillance network；
S12, selection each video monitoring equipment monitoring range in characteristic point, surveyed and drawn, obtain other ground
Partial positional information, form the video surveillance network of coordinatograph；
It is S13, each video monitoring equipment and server is interrelated, obtain the video for including geographical location information.
In some embodiments, in the step S11, using three-dimensional laser scanner, spirit level, GPS hand-held sets, steel ruler,
The instrument of surveying and mappings such as stopwatch, theodolite, to be surveyed and drawn to the geographical coordinate of each video monitoring equipment.
In some embodiments, the step S2 includes：
S21, the pixel point coordinates according to the video object, obtain the geographic coordinate values of the video object；
S22, by the city video monitoring network, follow the trail of the video object, form the movement of the video object
Track.
In some embodiments, the step S3 includes：
S31, by the video for including geographical location information acquired in the video surveillance network and the video
Target video is decomposed into some continuous static video collections；
Key position point in S32, the selection continuous static video collection, and along decomposition road in video after disassembly
Footpath selecting video key frame；
S33, according to streetscape pattern, the coordinate centered on shooting point, by video capture orientation and the sky of video surveillance network
Between in coordinate system video geographical position coordinates, project in spherical coordinate, one video flowing along mobile route of generation is empty
Between；
S34, continuous, dynamic video carried out to the video in the video fluid space by display screen on the electronic map
Display and inquiry.
In some embodiments, the step S4 includes：
S41, the video data for obtaining real scene on city map, and according to the video content of real scene, establish and increase
Strong information；
S42, the true geographic coordinate information for establishing the video and Virtual Space coordinate system transformational relation, will be virtual right
As corresponding to the real scene for being merged into video data on position, and show that virtual objects melt with real scene by display device
The information being integrated.
In some embodiments, S51, the information of the augmented reality passed through into the helmet, anaglyph spectacles, the projection display, shifting
Dynamic display or computer monitor are shown to user；
S52, carry out with user eye tracking, click, movement, the rotation virtual objects, gesture identification interact, according to
Interactive information converts the enhancement information.
The beneficial effects of the present invention are：By the way that video map is combined with the technology of augmented reality so that scene of a crime
Directly perceived effective reproduction true to nature, multi-angle observation and partial enlargement are realized, more intuitively give expression to the sky between object in situ
Between position relationship, so as to provide effective foundation to solve a case.
Brief description of the drawings
Fig. 1 is the flow chart of the scene of a crime restoring method of the invention based on video map and augmented reality；
Fig. 2 is a specific embodiment of the scene of a crime restoring method of the invention based on video map and augmented reality
Flow chart.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with accompanying drawing and specific implementation
Example, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only explaining this hair
It is bright, without being construed as limiting the invention.
The present invention thinking be：Scene of a crime electronic map is initially set up, video, video object are projected in electronic map
In, accuracy registration is carried out by control point, monitor video is subjected to angular transformation and stretched vertically, it is three-dimensional with display
Sense；Then above-mentioned positioning video is carried out by augmented reality module positioning augmented reality processing, adds text information and operation
Button, crime target and victim's behavior is set intuitively to show.
Referring to Fig. 1, the flow chart for scene of a crime restoring method of the present invention based on video map and augmented reality.It is logical
Following steps are crossed to realize：Step S1 is first carried out, based on spatial positional information, establishes the city video monitoring of coordinatograph
Network, the video for including positional information is obtained, and each video monitoring equipment and data server is interrelated.Perform step
S2, the geographic coordinate values of video object different frame in the city video monitoring network is obtained, forms the video object
Motion track.Step S3 is performed, based on the spatial positional information, the video and the video object are projected to electronically
On figure, and the video and the video object are subjected to angular transformation and stretched vertically processing, the city for forming three-dimensional regards
Frequency map.Step S4 is performed, according to the real scene of the video and the video object on the video map of city, establishes bag
Virtual objects containing enhancement information, the virtual objects are merged with the real scene on the city video map, to strengthen
Reality.Perform step S5, by the presentation of information of the augmented reality to user, and with the user mutual, according to interactive information
Convert the enhancement information.
It is referring to Fig. 2, specific real for scene of a crime restoring method one of the present invention based on video map and augmented reality
Apply the flow chart of example.Detailed process is：Step S11 is performed, the geographical seat of each video monitoring equipment in city is obtained by surveying and drawing
Mark, centered on each video monitoring equipment, according to monitoring range, establish the space coordinates of video surveillance network.It is preferred that
, using instrument of surveying and mappings such as three-dimensional laser scanner, spirit level, GPS hand-held sets, steel ruler, stopwatch, theodolites, to each video
The geographical coordinate of monitoring device is surveyed and drawn.
Step S12 is performed, the characteristic point in the monitoring range of each video monitoring equipment is selected, is surveyed and drawn, is obtained
The positional information of other above ground portions, form the video surveillance network of coordinatograph.Feature can be obtained by the mapping to characteristic point
The geographical coordinate of point, the imaging array for the image that video monitoring equipment is collected carry out projective transformation and Coordinate Conversion, root
According to characteristic point pixel and characteristic point actual geographic coordinate corresponding relation, it is corresponding to obtain other pixels in imaging array
Actual geographic coordinate, form the video surveillance network of coordinatograph.Step S13 is performed, by each video monitoring equipment and clothes
Being engaged in, device is interrelated, and unified management, acquisition includes the video of geographical location information.By including acquired in each video monitoring equipment
The video data for having positional information is uniformly stored in video database, and each video monitoring equipment is connected with data server, number
Each video monitoring equipment is managed according to server is unified, controls the monitor state of each video monitoring equipment.
Step S21 is performed, according to the pixel point coordinates of the video object, obtains the geographical coordinate of the video object
Value.Due to the pixel point coordinates for having obtained each video monitoring equipment imaging array in step s 12 and true geographical coordinate
Corresponding relation, therefore, after the pixel point coordinates of video object is obtained, according to the pixel point coordinates of imaging array with it is true
The corresponding relation of real geographical coordinate, the true geographical position coordinates of video object can be tried to achieve.Step S22 is performed, passes through the city
City's video surveillance network, the video object is followed the trail of, form the motion track of the video object.Obtaining the true of video object
After real geographical position coordinates, the prison of video monitoring equipment corresponding with the geographical position coordinates is transferred by data server
Picture is controlled, and follows the trail of video object, forms the motion track of video object.
Step S31 is performed, by the video data and video that include geographical location information acquired in video surveillance network
Target video is decomposed into some continuous static video collections.Step S32 is performed, selects key position point, and regarding after disassembly
Along decomposition path-ways selecting video key frame in frequency；Perform step S33, according to streetscape pattern, the coordinate centered on shooting point, by regarding
The geographical position coordinates of video, are projected in spherical coordinate in frequency shooting orientation and the space coordinates of video surveillance network,
Generate a video fluid space along mobile route.Preferably, video is subjected to angular transformation and stretched vertically is handled, form tool
There is relief city video map.Step S34 is performed, by display screen on the electronic map to the video in video fluid space
Carry out continuous, dynamic video to show and inquire about, inquiry and tracing and positioning can be interacted according to the locus of video data.
So as to complete the visual tracking of the foundation of coordinatograph city video map and video object, realize to space environment, video mesh
Target is holographic, dynamic, really displaying.
Step S41 is performed, obtains the video data of real scene on city map, and in the video according to real scene
Hold, establish the virtual objects for including enhancement information.The virtual objects for including enhancement information, enhancement information bag are established by computer
Include the text information explained to the place stressed, Video processing mode (including repeat playing, speed is played, put upside down,
Fix and amplify, measure, translation-angle etc.), the information such as marker button, can be the virtual object coexisted with true environment
The non-geometry information of body or the object of physical presence.Step S42 is performed, establishes the true geographic coordinate information of video
With the transformational relation of Virtual Space coordinate system, virtual objects are merged into corresponding to the real scene of video data on position, and
The information to be combined together by display device display virtual objects with real scene.
Step S51 is performed, by the presentation of information of the augmented reality to user.Pass through the helmet, anaglyph spectacles, Projection Display
Data message after fusion is shown to user by the observation display device such as device, mobile display or computer monitor.Storage is given birth to
Into the data that are merged with virtual objects of real scene.Step S52 is performed, is interacted with user, converts the enhancement information.
Interacted by registering, tracking with user.The interacting including the following aspects with user：
Changed according to the user visual field detected in real time, it is corresponding with true geographic coordinate system to rebuild Virtual Space coordinate system
Relation；The conversion of space coordinates can be realized by electronic three-dimensional map Accreditation System.
According to user's direction of visual lines, the mapping position addition respective virtual object in projection plane, and by these information
Real-time display is in the correct position of fluorescent screen.Preferably, using infrared camera technology and corneal reflection Technical Follow-Up eyeball
Motion, calculates direction of visual lines.
Interaction virtual objects are clicked on according to user's operation, moved, the action such as rotate.Preferably, it can pass through
Operation of the user to virtual objects is realized in virtual reality hardware and software programming, and the virtual reality hardware includes data glove
Deng.
Using the interaction of gesture identification, the interaction based on Video processing mode, button menu is generated such as on marker.
User can carry out positioning playing by scopes such as the AR helmets, glasses to video and enhancement information so that use
Family is in scene of a crime, watches crime target and victim's behavior in video.User is in observation, when sight turns from a scene
When moving on to another scene, the relation of system reconstructing virtual coordinates and true coordinate, the enhancement information of virtual objects also becomes therewith
Change, so as to show the enhancement information of another corresponding scene.User can click on virtual push button as needed and weight is carried out to video
The operations such as replay is put, speed is played, puts upside down, fixes and amplified, measures, translation-angle.
By the present embodiment, virtual scene is constructed, by the presentation that scene of a crime is true to nature, realizes multi-angle observation drawn game
Portion amplifies, the place stressed to needs, and text information and video information is superimposed.So as to solve real scene crime
The problems such as information can not preserve, photo is not directly perceived, is easy to study scene repeatedly, and foundation is provided to solve a case；Simultaneously can be with
As course case, for police universities teaching and new alert training.
The embodiment of present invention described above, is not intended to limit the scope of the present invention..Any basis
Various other corresponding changes and deformation made by the technical concept of the present invention, should be included in the guarantor of the claims in the present invention
In the range of shield.
Claims (5)
1. the scene of a crime restoring method based on video map and augmented reality, it is characterised in that comprise the following steps：
S1, based on spatial positional information, establish the city video monitoring network of coordinatograph, obtain the video for including positional information,
It is and each video monitoring equipment and data server is interrelated；
S2, the geographic coordinate values for obtaining video object different frame in the city video monitoring network, form the video mesh
Target motion track；
S3, based on the spatial positional information, the video and the video object are projected on electronic map, and will described in
Video and the video object carry out angular transformation and stretched vertically processing, form the city video map of three-dimensional；
S4, the real scene according to the video and the video object on the video map of city, foundation include enhancement information
Virtual objects, the virtual objects are merged with the real scene on the city video map, carry out augmented reality；
Text information that the enhancement information includes explaining the place that stresses, Video processing mode, marker by
The information such as button, or the dummy object coexisted with true environment, or the non-geometry information of the object of physical presence；
S5, by the presentation of information of the augmented reality to user, and with the user mutual, the increasing is converted according to interactive information
Strong information；
The step S1 includes：
S11, mapping obtain the geographical coordinate of each video monitoring equipment in city, centered on each video monitoring equipment, root
According to monitoring range, the space coordinates of video surveillance network are established；
S12, selection each video monitoring equipment monitoring range in characteristic point, surveyed and drawn, obtain other above ground portions
Positional information, form the video surveillance network of coordinatograph；
The geographical coordinate of characteristic point, the image that video monitoring equipment is collected can be obtained by the mapping to the characteristic point
Imaging array carry out projective transformation and Coordinate Conversion, according to the pixel of characteristic point and pair of the actual geographic coordinate of characteristic point
It should be related to, obtain actual geographic coordinate corresponding to other pixels in imaging array, form the video surveillance network of coordinatograph；
It is S13, each video monitoring equipment and server is interrelated, obtain the video for including geographical location information；
The step S2 includes：
S21, the pixel point coordinates according to the video object, obtain the geographic coordinate values of the video object；
S22, by the city video monitoring network, follow the trail of the video object, form the motion track of the video object；
After the true geographical position coordinates of video object are obtained, transferred and the geographical position coordinates by data server
The monitored picture of corresponding video monitoring equipment, and video object is followed the trail of, form the motion track of video object.
2. the scene of a crime restoring method based on video map and augmented reality as claimed in claim 1, it is characterised in that institute
State in step S11, using instrument of surveying and mappings such as three-dimensional laser scanner, spirit level, GPS hand-held sets, steel ruler, stopwatch, theodolites, come
The geographical coordinate of each video monitoring equipment is surveyed and drawn.
3. the scene of a crime restoring method based on video map and augmented reality as claimed in claim 1, it is characterised in that institute
Stating step S3 includes：
S31, by the video for including geographical location information acquired in the video surveillance network and the video object
Video is decomposed into some continuous static video collections；
Key position point in S32, the selection continuous static video collection, and selected in video after disassembly along decomposition path-ways
Take key frame of video；
S33, according to streetscape pattern, the coordinate centered on shooting point, sat by video capture orientation and the space of video surveillance network
The geographical position coordinates of video, are projected in spherical coordinate in mark system, generate a video fluid space along mobile route；
S34, continuous, dynamic video is carried out to the video in the video fluid space on the electronic map by display screen shown
With inquiry.
4. the scene of a crime restoring method based on video map and augmented reality as claimed in claim 1, it is characterised in that institute
Stating step S4 includes：
S41, the video data for obtaining real scene on city map, and according to the video content of real scene, establish comprising increasing
The virtual objects of strong information；
S42, the true geographic coordinate information for establishing the video and Virtual Space coordinate system transformational relation, will be described virtual right
As corresponding to the real scene for being merged into video data on position, and by display device show the virtual objects with it is described true
The information that real field scape combines together.
5. the scene of a crime restoring method based on video map and augmented reality as claimed in claim 1, it is characterised in that institute
Step S5 is stated to comprise the following steps：
S51, the information of the augmented reality shown by the helmet, anaglyph spectacles, the projection display, mobile display or computer
Device is shown to user；
S52, carry out with user eye tracking, click, movement, the rotation virtual objects, gesture identification interact, according to interaction
Information converts the enhancement information.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111541876A (en) * | 2020-05-18 | 2020-08-14 | 上海未高科技有限公司 | Method for realizing high-altitude cloud anti-AR technology |
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