CN107835383B - Ultrashort delay image transfer method for individual-soldier system - Google Patents
Ultrashort delay image transfer method for individual-soldier system Download PDFInfo
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- CN107835383B CN107835383B CN201610775340.0A CN201610775340A CN107835383B CN 107835383 B CN107835383 B CN 107835383B CN 201610775340 A CN201610775340 A CN 201610775340A CN 107835383 B CN107835383 B CN 107835383B
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/147—Scene change detection
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
A kind of ultrashort delay image transfer method for individual-soldier system, in transmission process, it makes full use of in individual-soldier system application scenario diagram and there are a large amount of changeless features, just for property emerging part in transmitting scene, while receiving end scene figure is updated by comparing new acquired image position corresponding in former scene figure and scaling relationship.Using image transfer method of the present invention, can make full use of image in individual-soldier system use environment has a large amount of fix informations, reduces the data volume needed through transmission.Corresponding region is timely updated by position of the freshly harvested image in former scene figure and scaling relationship simultaneously.Thus, the delay of image transmitting in individual-soldier system can be greatly reduced while guaranteeing picture quality using this method, improve the working efficiency of individual soldier's work system.
Description
Technical field
The present invention relates to field of image processing more particularly to a kind of image transfer methods for reducing delay.
Background technique
In individual-soldier system, it is most important that information, especially visual information.Command centre is satellite, scout, and
The image that airborne camera is seen is sent to the Helmet Mounted Display of soldier, and each soldier also can be installing on oneself helmet
The image that camera is seen is sent to command centre.Communication between command centre and soldier is by wireless transmission, number
It is very limited according to bandwidth, and the data transmitted are mostly video image, need to occupy very high bandwidth.A usual soldier is flat
It is required to the distribution at least communication resource of 1Mbit/s or more and is used for transmission video image.And increasingly with the resolution ratio of image
Height, the data volume of image also can be increasing, huge information content by greatly limit command centre commander soldier ability and
The quantity for the soldier that can effectively command.How efficiently to transmit image becomes extremely important problem in individual-soldier system.And
And it is extremely important to the requirement of real-time of image, video information when due to fighting, command centre and soldier require to see in time
Operation situation.How the delay of image transmitting is reduced, and high speed transmits the operation that image will be directly related to individual-soldier system in time
Ability.
However, make a general survey of current image processing techniques, such as H.264, H.265, numerous numbers of MPEG and Wavelet etc.
Image processing techniques is all directed to the film video of common not fixed scene.These methods are all using each frame as isolated
Image handled, even if compression after, in these methods transmit image still need very high bandwidth.Moreover, because video
Each frame image requires to be compressed, thus compression needs long time, so that the video of transmission, image can all exist very
Big delay.It is generally needed more than 3 seconds from camera to display, if communication channel is unstable or is interfered, when required
Between will be longer.Long in this way delay meeting is prevent command centre and soldier from seeing field data in time, therefore and lose again
Opportunity of combat is wanted, while causing situation passive and vulnerable to attack.
Summary of the invention
Technical problem: in order to solve the shortcomings of the prior art, the purpose of the present invention is to provide one kind to be used for individual soldier
The ultrashort delay image transfer method of system.
Technical solution: image transfer method of the present invention updates receiving end with the collected new image information in camera shooting end
Scene figure, only processing images part new in the acquired image of end by way of splicing, to reduce the letter for needing to transmit
Breath amount solves the problems, such as the excessive bring interference of data volume and delay in individual-soldier system image transmitting.The specific step of this method
It is rapid as follows.
A kind of ultrashort delay image transfer method for individual-soldier system, which is characterized in that the specific steps of image transmitting
It is as follows:
Step 1, it initializes, distinguishes one scene figure of each setting at camera shooting end and receiving end, respectively camera shooting end scene figure
With receiving end scene figure, two scene figure sizes are identical, and two scene figure corresponding region ranges are more than that camera single takes
Scene area range；
Step 2, camera shooting end carries out Image Acquisition for the first time, and updates camera shooting end scene figure simultaneously with acquired image and connect
Corresponding region in receiving end scene figure；
Step 3, it images end shift position and carries out new round Image Acquisition, camera shooting end is by new acquired image and images
End scene figure compares, and rejects in new acquired image with the camera shooting equitant part of end scene figure, obtains figure to be transmitted
Picture, while calculating image to be transmitted position and zoom factor corresponding in camera shooting end scene figure；End is imaged by figure to be transmitted
Picture, the position of image to be transmitted and zoom factor are transmitted to receiving end together；
Step 4, receiving end receives the information that the transmission of camera shooting end comes, and according to zoom factor to the image to be transmitted received
It zooms in and out, then according to the correspondence in the image update receiving end scene figure to be transmitted after the location information scaling received
Region；
Step 5,3 are repeated the above steps to step 4, until terminating image transmitting.
Wherein, in step 3, if new acquired image and camera shooting end scene figure comparison, the two is completely overlapped, there is only
When the difference of zoom factor, end is imaged by the corresponding position of new acquired image and zoom factor and is transmitted to receiving end together；
In step 4, if receiving end receives only position and zoom factor information without image information to be transmitted, receive
End is then zoomed in and out according to image of the zoom factor to corresponding position in the scene figure of receiving end.
Wherein, while imaging end progress new round Image Acquisition, receiving end receives camera shooting end and adopts in last round of image
The position of image to be transmitted, image to be transmitted that centralized calculation obtains and zoom factor information, and connect according to these information updates
Receiving end scene figure.
The utility model has the advantages that
The defect that the present invention is big for conventional images transmission technology data volume, delay is long, using needing to adopt in individual-soldier system
The image of collection is mostly environment scene, and there are a large amount of changeless features in environment scene, and proposing one kind can
Shorten the method for image transmitting time delay.Just for property emerging part in transmission environment scene when this method transmits image,
The information content for substantially reducing transmission is timely updated part emerging in environment scene by the splicing of receiving end
Into whole scene figure.Since this method eliminates scene original with camera shooting end in new acquired image in step 3
Emerging part is targetedly transmitted when scheming equitant part, therefore transmitting every time, greatly reduces image to be transmitted
Data volume.Moreover, because also very small with the position of image simultaneous transmission to be transmitted and zoom factor data volume, therefore can be
Guarantee to reduce the information content for needing to transmit while image definition, to reduce requirement of the transmission image to channel, shortens figure
The delay time that need to be undergone as transmission.And then while guaranteeing that individual soldier and command centre can see field data in time,
The quantity that command centre is able to carry out the soldier effectively commanded is expanded, the working efficiency of individual-soldier system is greatly improved.
In this method, the camera carried when executing task using individual soldier's terminal can follow the movement of soldier not stop more new field
Scene figure is divided into the fritter being superimposed by the view-finder of many cameras by the characteristics of scape figure, by comparison new images and originally
Corresponding relationship obtained from the image saved in scene figure distinguishes position of each width new images in entire scene figure.Transmission
When need to only transmit positional relationship corresponding to the parts of images newly increased and this parts of images, reduce and need to transmit
Information content, reduces requirement of the image transmitting to channel, also just reduce as channel and caused by interference.
Visual angle can not stop to change when further, due to soldier's movement, and original collected scene figure may be remotely
Overall pattern, and new acquired image is possible to be exactly to walk close to enlarged drawing local in rear former scene figure.Thus carrying out figure
When as splicing, while considering new images and original picture registration relationship, it is also necessary to zoom in and out new images to adapt to field
Jing Tu.Thus, it needs to consider zoom factor when corresponding relationship is arranged.It otherwise, although also being capable of the former scene figure of cracking completion
The transmission of the image of middle partial enlargement, but for individual-soldier system, such processing not it is necessary to.Furthermore, it is possible to due to
The limitation of partial enlargement image and the judgement for influencing command centre.Thus, in receiving end, this method is adjusted by zoom factor
The size of freshly harvested image is embedded into original scene figure.Achieve the purpose that high-speed transfer image.
Further, when camera shooting end acquired image information only zooms in and out current scene figure, not comprising new letter
When breath, camera shooting end can only transmit corresponding position and zoom factor information, by receiving end according to corresponding in itself scene figure
The image of position zooms in and out.Such processing can further reduce the information content of transmission, reduce information transmission and cause
Delay and suffered channel disturbance.
In the method for the invention, the acquisition of image is synchronous with transmission display to be carried out, and can further speed up image in this way
The efficiency of transmission reduces delay.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, and with it is of the invention
Embodiment together, is used to explain the present invention, and is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the flow chart of image transfer method of the present invention；
Fig. 2 is the schematic diagram for the process spliced in the present invention；
Fig. 3 is in image transmitting process be by image mosaic in view-finder complete scene figure schematic diagram；
Fig. 4 is the structure chart of individual-soldier system of the present invention；
The practical practical effect diagram of the position Fig. 5 present invention.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Fig. 1 is flow chart of the method for the present invention.Image transfer method of the present invention makes full use of list in transmission process
There are a large amount of changeless features in soldier's system application scenario diagram, just for property emerging portion in transmitting scene
Point, while receiving end is updated by comparing new acquired image position corresponding in former scene figure and scaling relationship
Jing Tu reduces the data volume needed through transmission.Specific transmitting step is as follows:
Step 1, it initializes, distinguishes one scene figure of each setting at camera shooting end and receiving end, respectively camera shooting end scene figure
With receiving end scene figure, two scene figure sizes are identical, and two scene figure corresponding region ranges are more than that camera single takes
Scene area range；
Step 2, camera shooting end carries out Image Acquisition for the first time, and updates camera shooting end scene figure simultaneously with acquired image and connect
Corresponding region in receiving end scene figure；
Step 3, it images end shift position and carries out new round Image Acquisition, camera shooting end is by new acquired image and images
End scene figure compares, and rejects in new acquired image with the camera shooting equitant part of end scene figure, obtains figure to be transmitted
Picture, while calculating image to be transmitted position and zoom factor corresponding in camera shooting end scene figure；End is imaged by figure to be transmitted
Picture, the position of image to be transmitted and zoom factor are transmitted to receiving end together；
Step 4, receiving end receives the information that the transmission of camera shooting end comes, and according to zoom factor to the image to be transmitted received
It zooms in and out, then according to the correspondence in the image update receiving end scene figure to be transmitted after the location information scaling received
Region；
Step 5,3 are repeated the above steps to step 4, until terminating image transmitting.
Since individual-soldier system shown in Fig. 4 is by command centre, machine and several soldiers composition are commanded.Commander's machine and soldier are
Equipped with camera and display.It is connected between commander's machine and soldier with radio channel.Commander's machine takes the photograph itself camera or satellite
The scene seen as head is sent to related soldier, and the scene that soldier sees oneself gives commander's machine.Commander's machine is according to each soldier
The scene seen and needs of fighting, issue an order to related soldier.The scene figure and order that soldier sends according to command centre are attacked
Hit target.The camera being mounted on the helmet of soldier can take action and mobile and floor scene with soldier, while will show
Field scene feeds back to the command centre at rear.There are many changeless features for the environment scene as locating for soldier, conventional
This feature due to not accounting for application environment of image transfer method, it usually needs transmit a large amount of garbage.This
The transmission method just for property emerging part in transmission environment scene is invented, thus substantially reduces the information of transmission
Amount, by the splicing of receiving end, part emerging in environment scene is shown in time in whole scene figure.In turn
Channel requirements needed for reducing transmission image while guaranteeing image definition, when shortening the delay that image transmitting need to be undergone
Between.
Due to, visual angle can not stop to change when soldier is mobile, and original collected scene figure may be overall pattern remotely,
And new acquired image is possible to be exactly to walk close to enlarged drawing local in rear former scene figure.Thus when carrying out image mosaic,
While considering new images and original picture registration relationship, it is also necessary to zoomed in and out to new images to adapt to scene figure.When new
Acquired image and camera shooting end scene figure comparison, the two is completely overlapped, and there is only when the difference of zoom factor, that is to say, that
Whole characteristic informations of freshly harvested image are just remained in the scene figure of original receiving end.In this case, in order to timely update
Soldier visual angle shown by wisdom center, at this time only according to receiving end itself scene figure, to receiving end scene figure corresponding region
Carry out corresponding scaling.
Therefore, in step 3, if new acquired image and camera shooting end scene figure comparison, the two is completely overlapped, there is only
When the difference of zoom factor, end is imaged by the corresponding position of new acquired image and zoom factor and is transmitted to receiving end together；
In step 4, if receiving end receives only position and zoom factor information without image information to be transmitted, receive
End is then zoomed in and out according to image of the zoom factor to corresponding position in the scene figure of receiving end.
In this method, while imaging end progress new round Image Acquisition, receiving end receives camera shooting end in last round of figure
Position and zoom factor information as adopting image to be transmitted, image to be transmitted that centralized calculation obtains, and more according to these information
New receiving end scene figure.Imaging end and receiving end, synchronous progress Image Acquisition transmission is restored with image mosaic respectively.
Shown in Fig. 2, operational environment is replaced to show the specific splicing of this method with geometrical pattern.End is imaged when beginning
Scene figure with receiving end is blank, when the image in the first width view-finder reaches, images the scene figure at end and receiving end
In all without this parts of images.Then, this parts of images updates in the scene figure at camera shooting end, and is sent to receiving end and does equally
Update.Camera up moves certain distance from original position, the image in view-finder some be in scene figure
Already existing image, some is new image.After finding image existing for this part in the scene at camera shooting end, seat
Mark and zoom factor are sent to receiving end.Receiving end is by coordinate and interval parameter using this parts of images in scene figure as view-finder
Image show.In this schematic diagram, if the new images of acquisition size shared in scene figure does not change, just
It does not need to zoom in or out.As camera is mobile, view-finder gradually collects the image of whole scenes, is finally spliced into entire
The image of scene.The image spliced is as shown in Figure 2.Dotted line frame in Fig. 3 is exactly the range of each dollying head view-finder.
A scene figure more much bigger than camera view-finder is respectively set at camera shooting end and receiving end first in this method, this
Two scene figures are updated with the movement of camera at camera shooting end and receiving end simultaneously, keep synchronizing.When camera is mobile, camera shooting
The image in present camera view-finder is presented in the scene figure at end first, it is collected in camera shooting end view-finder by calculating
Coordinate of the new images in scene figure and zoom in or out coefficient, these parameters together with the image information with new feature (i.e.
Image information to be transmitted) it is sent to receiving end, receiving end is moved to view-finder according to these parameters the phase in the scene figure of receiving end
Position is answered, and splices after the image of corresponding portion is zoomed in or out according to parameter and is updated into receiving end scene figure.
That is, if can not find the image in view-finder, or the object for having part new in the scene figure at camera shooting end
Body, this parts of images will be transmitted directly to receiving end.The receiving end image new with this part, connects according to coordinate and area update
The image of the corresponding portion of receiving end scene figure.But if image characteristic information all in the new images collected of end all
It is included in the scene figure of receiving end, receiving end only needs to zoom in or out itself scene figure corresponding portion i.e.
It can keep and image the synchronous of end.The data volume of system transmission can be greatly reduced with calculating by this splicing, so that
The present invention have image transmitting be delayed it is short, transmission be disturbed small advantage.Under same channel condition, this method is used
Individual-soldier system can transmit more information, so as to improve systemic resolution.Fig. 5 just shows transmission method of the present invention
Effect achieved in actual use.
Those of ordinary skill in the art will appreciate that: the foregoing is only a preferred embodiment of the present invention, and does not have to
In the limitation present invention, although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art
For, still can to foregoing embodiments record technical solution modify, or to part of technical characteristic into
Row equivalent replacement.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should all include
Within protection scope of the present invention.
Claims (3)
1. a kind of ultrashort delay image transfer method for individual-soldier system, which is characterized in that the specific steps of image transmitting are such as
Under:
Step 1, it initializes, distinguishes one scene figure of each setting at camera shooting end and receiving end, respectively image end scene figure and connect
Receiving end scene figure, two scene figure sizes are identical, and two scene figure corresponding region ranges are more than that camera single is found a view area
Domain range；
Step 2, camera shooting end carries out Image Acquisition for the first time, and updates camera shooting end scene figure and receiving end simultaneously with acquired image
Corresponding region in scene figure；
Step 3, it images end shift position and carries out new round Image Acquisition, camera shooting end is by new acquired image and images end
Scape figure compares, and rejects in new acquired image with the camera shooting equitant part of end scene figure, obtains image to be transmitted, together
When calculate image to be transmitted position and zoom factor corresponding in camera shooting end scene figure；Image end by image to be transmitted, to
The position and zoom factor for transmitting image are transmitted to receiving end together；
Step 4, receiving end receives the information that the transmission of camera shooting end comes, and is carried out according to zoom factor to the image to be transmitted received
Scaling, then according to the correspondence area in the image update receiving end scene figure to be transmitted after the location information scaling received
Domain；
Step 5,3 are repeated the above steps to step 4, until terminating image transmitting.
2. the ultrashort delay image transfer method according to claim 1 for individual-soldier system, which is characterized in that step 3
In, if new acquired image and camera shooting end scene figure comparison, the two is completely overlapped, there is only when the difference of zoom factor,
It images end and the corresponding position of new acquired image and zoom factor is transmitted to receiving end together；
In step 4, if receiving end receives only position and zoom factor information without image information to be transmitted, if receiving end
It is zoomed in and out according to image of the zoom factor to corresponding position in the scene figure of receiving end.
3. the ultrashort delay image transfer method according to claim 1 for individual-soldier system, which is characterized in that imaging
While end carries out new round Image Acquisition, receiving end reception camera shooting end is calculated to be transmitted in last round of Image Acquisition
Image, the position of image to be transmitted and zoom factor information, and according to these information update receiving end scene figures.
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