CN109918466A - A kind of real-time map information overall situation rendering method based on video analysis - Google Patents
A kind of real-time map information overall situation rendering method based on video analysis Download PDFInfo
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Abstract
The invention discloses a kind of real-time map information overall situation rendering method based on video analysis, this method aim to solve the problem that the technical issues of all target real-time map information display in map monitoring range can not be really effectively realized under the prior art；The specific steps of this method are as follows: acquire the audio/video information in map monitoring range in real time first with video acquisition device with the status information of itself, video analysis device is recycled to obtain the various information of all targets in map monitoring range, and the information is transmitted to cartographic information system, three-dimensional data modeling finally is carried out using all targets in information to map monitoring range, finally obtains the geographical location of all targets in map monitoring range.By the technical solution in the method for target detection, initiative recognition and the various real time status informations for acquiring target, again in such a way that three-dimensional space calculates, map is monitored that the real-time geographical locations of all targets and state are intuitively efficiently presented in cartographic information system in range.
Description
Technical field
The technical field shown the invention belongs to cartographic information more particularly to a kind of real-time map letter based on video analysis
Global rendering method is ceased, specific is to detect target geographic position with Video Analysis Technology and target is directly presented in map
Method in information system.
Background technique
Currently, cartographic information display technology obtains biggish development with the change of processing technique, while in our lives
In also play increasing effect, in simple terms include region real-time map etc., this has greatly spread to industrial life
Produce and facilitate everybody life；But simultaneously its still there is also the defects of a bit, i.e., in existing cartographic information system, ground
The processing of figure information system lacks the function of effectively to the target occurred at random in reality, carrying out scanning global presentation in real time,
And this function is very important in region real-time map is shown.
In cartographic information system now, the method observed the target occurred at random has two classes, a kind of method
It is the mode based on video-see, i.e., based on video-see to observe the target occurred at random, but this mode is logical
A small amount of real-time video can only be often placed on map, and other real-time video is needed by manually being exchanged manually or certainly
It is dynamic successively to show；Simultaneously because the direction of video capture device is not quite similar, global presentation can not be carried out, also will cause viewing
The entanglement of person's spatial impression cannot intuitively embody true details, can not really effectively realize region real-time map information
Display；In addition, for all video pictures in a certain region, if high-volume, which is shown, can also occupy excessive display area
Excessive, excessively high network bandwidth, excessively high device resource, influence the use of other function.Another method be then for it is some both
Earnest body uploads device using preparatory installation map position information, and is sent to cartographic information system by wireless device, makes it
To the object in each monitoring on map, presented with the mark of a real-time update position, but this mode needs
Installation map position information uploads device in advance, and can not detect the object for not pre-installing such device.
Summary of the invention
(1) technical problems to be solved
In view of the deficiencies of the prior art, the real-time map information based on video analysis that the purpose of the present invention is to provide a kind of
Global rendering method, this method, which aims to solve the problem that, can not really effectively realize all mesh in map monitoring range under the prior art
The technical issues of marking the display of real-time map information；By the technical solution in the method for target detection, initiative recognition simultaneously acquires mesh
The various real time status informations of target, then in such a way that three-dimensional space calculates, map is monitored that all targets are in real time in range
Position and state is managed intuitively efficiently to present in cartographic information system.
(2) technical solution
In order to solve the above-mentioned technical problems, the present invention provides such a, and the real-time map information based on video analysis is complete
Office's rendering method, the specific steps of this method are as follows:
Step 1: the audio/video information and video that are acquired in real time in map monitoring range using video acquisition device are adopted
The geographical location of acquisition means itself height, camera vertical angle, camera level angle, images the information of focal length, and will adopt
The information of collection is transmitted to video analysis device；
In above-mentioned steps, the video acquisition device can be arbitrary setting with acquisition audio/video information in real time
It is standby, it will be corresponding after can installing the equipment as shooting angle or shooting direction or the camera shooting nonadjustable equipment of focal length
Information preservation is in cartographic information system, for calculating；As movable equipment as with camera function and transmission of video function
Aircraft is to need to have the function of acquiring itself geographical location, elevation information in real time；And as being not required to mobile set
It is standby, the geographical location of the equipment, elevation information can be stored in cartographic information system in advance.Meanwhile the video point
Analysis apparatus can be dedicated for analyzing video information, and video analysis device can be physically separate equipment, be also possible to logic
Upper virtual equipment, can also be embedded in video acquisition device and be integrated, and can also physically set with operation cartographic information system
Standby is same equipment.
In addition, video analysis device is carried out by the channels such as direct-connected or network and video acquisition device in above-mentioned steps
Data connection can be used the video flowing that RTSP agreement obtains video capture device, obtain the Pan/Tilt/Zoom of video acquisition device
Information, and to this information flag current time；In the Pan/Tilt/Zoom information, Pan is that the camera of the model is vertical
Angle information, Tilt are the camera level angle information of the model, and Zoom is the zoom information of the model.
Step 2: extracting the video frame in video information using video analysis device, and it is decoded, obtains image
Frame, then it is detected, to obtain the respective type of all targets, the position in video pictures in map monitoring range
It sets, the range of shared picture, and obtained all information is transmitted to cartographic information system by video analysis device；
In above-mentioned steps, video analysis device can detect picture frame with algorithm of target detection, thus with
Pixel is unit, finally obtain the respective type of all targets, the position in video pictures, shared picture range, meanwhile,
The information that video analysis device obtains further includes the Pan/Tilt/Zoom information got when video acquisition device acquisition.
Step 3: cartographic information system according to the respective type of all targets in the map monitoring range got, regarding
The range and Pan/Tilt/Zoom information of position, shared picture in frequency picture, to map monitor range in all targets according to
Secondary progress three-dimensional data modeling finally obtains geographical location of all targets in map in map monitoring range.
In above-mentioned steps, cartographic information system can be shown on map different target using unlike signal.
(3) beneficial effect
Compared with prior art, the beneficial effects of the present invention are: technical solution of the present inventions to fully utilize video point
Analysis technology and image processing techniques, in the method for target detection, initiative recognition and the various real time status informations for acquiring target, then
In such a way that three-dimensional space calculates, map is monitored to the real-time geographic position of all targets (including the target occurred at random) in range
It sets and state is intuitively efficiently presented in cartographic information system.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below to this
Technical solution in invention specific embodiment carries out clear, complete description, with the present invention is further explained, it is clear that retouched
The specific embodiment stated is only a part of embodiment of the invention, rather than whole patterns.
Step 1: being distributed over map as video acquisition device using the ball machine of Haikang prestige view model DS-2CD5
Monitor each place in range, ambient enviroment is acquired in real time using it audio/video information and the geographical location of its own,
Mounting height camera vertical angle, camera level angle, images the information of focal length, and the information of acquisition is transmitted to view
Frequency division analysis apparatus.
Step 2 obtains video frame using video analysis device from video stream, and using decoder to video frame
It is decoded, to obtain picture frame, then uses the target detection of the R-CNN computer neural network model based on deep learning
Algorithm detects picture frame, to finally obtain the respective type of all targets, in video pictures as unit of pixel
Position, shared picture range, and obtained all information are transmitted to cartographic information system (i.e. by video analysis device
The respective type of all targets in figure monitoring range, the position in video pictures, shared picture three kinds of information of range, and
Video acquisition device acquires the Pan/Tilt/Zoom information got when this frame together, is sent to ground by ICP/IP protocol
Manage information system).
Step 3: cartographic information system according to the respective type of all targets in the map monitoring range got, regarding
The range and Pan/Tilt/Zoom information of position, shared picture in frequency picture, to map monitor range in all targets according to
Secondary progress three-dimensional data modeling, finally obtains the geographical location of all targets in map monitoring range, and makes cartographic information system
Different target is shown on map using unlike signal.
The foregoing describe technical characteristics of the invention and basic principle and associated advantages, for those skilled in the art
For, it is clear that the present invention is not limited to the details of above-mentioned exemplary embodiment, and without departing substantially from design of the invention or
In the case where essential characteristic, the present invention can be realized in other specific forms.Therefore, in all respects, should all incite somebody to action
Above-mentioned specific embodiment regards exemplary as, and is non-limiting, the scope of the present invention by appended claims and
It is not that above description limits, it is intended that all changes that come within the meaning and range of equivalency of the claims are included
In the present invention.
Although not each embodiment is only in addition, it should be understood that this specification is described according to each embodiment
It contains an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art answer
When considering the specification as a whole, the technical solution in each embodiment may also be suitably combined to form art technology
The other embodiments that personnel are understood that.
Claims (1)
1. a kind of real-time map information overall situation rendering method based on video analysis, which is characterized in that the specific steps of this method
Are as follows:
Step 1: acquiring the audio/video information and video acquisition dress in map monitoring range in real time using video acquisition device
Itself geographical location, height, camera vertical angle, camera level angle, the information for imaging focal length are set, and by acquisition
Information is transmitted to video analysis device；
Step 2: extracting the video frame in video information using video analysis device, and it is decoded, obtains picture frame,
It is detected again, to obtain the respective type of all targets, the position in video pictures, institute in map monitoring range
The range of picture is accounted for, and obtained all information are transmitted to cartographic information system by video analysis device；
Step 3: cartographic information system is drawn according to the respective type of targets all in the map monitoring range got, in video
The range and Pan/Tilt/Zoom information of position, shared picture in face, to map monitor range in all targets successively into
The modeling of row three-dimensional data finally obtains geographical location of all targets in map in map monitoring range.
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