CN104243834B - The image flow-dividing control method and its device of high definition camera - Google Patents
The image flow-dividing control method and its device of high definition camera Download PDFInfo
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Abstract
The present invention relates to intelligent transportation field, the image flow-dividing control method and its device of a kind of high definition camera are disclosed.In the present invention, following steps are repeated to same camera：Judge the stream type belonging to next frame video；For the camera, the acquisition parameters corresponding to the stream type are set；Control camera to shoot a frame video, and the frame of video is added in corresponding video flowing.The present invention is using a high definition camera, shunting spectrum assignment and data processing are carried out to frame of video, intellectual analysis video flowing uses the exposure control parameter and image processing algorithm needed for intellectual analysis video flowing, video stream is using the image exposure control parameter and image processing algorithm needed for video record, multiple streams of different demands can be met with parallel output using same camera, the video control parameters of cocurrent flow are not completely independent, both the need for having met intellectual analysis application, the need for also meeting video record application simultaneously, advantage is clearly.
Description
Technical field
The present invention relates to intelligent transportation field, the image flow-dividing control technology of more particularly to a kind of high definition camera.
Background technology
The propulsion built with safe city, and intelligent transportation field development, crossroad monitoring and traditional intelligence
Energy traffic application, such as bayonet socket, electronic police application is gradually in fusion, in order to cost-effective, to current intelligent transportation industry phase
Machine proposes new demand, it is necessary to which traditional intelligence traffic application can be met, and can also meet the monitoring video application at crossing.
At present in intelligent transportation sector application, intellectual analysis application should be realized, common monitoring video, one are realized again
As intelligent use need mobile object information in analysis scene, the exposure of camera will be limited, such as shutter shutter is less than
5ms, in order to ensure analysis scene noise within the specific limits, gain gain is also limited to, such as gain is less than 18dB.But it is right
In common surveillance video, generally require and ensure that night scene scene is bright enough, camera maximum exposure time is set and most increased
Benefit meets demand.For in intelligent transportation sector application, intellectual analysis application should be realized, common monitoring video is realized again,
Solution common at present has the following two kinds：
1）With two high definition cameras：One high definition intelligent camera configures the corresponding image-control parameter of intelligent use, and
Image processing algorithm, to reach the optimum efficiency of this intelligent use；Another is the corresponding figure of network monitoring video camera configuration
As control parameter, and image processing algorithm, to reach surveillance video optimum efficiency.This way ensure that good effect
Really, but using two cameras, engineering is relative complex, and equipment cost is high.
2）With a common high definition intelligent camera：In the insufficient scene of night illumination, if preferentially meeting to moving vehicle
Shooting, shutter is very fast, and vehicle's contour can cause video pictures partially dark clearly without hangover, lose the details of dark place；If excellent
Picture brightness lifting dark place details is first met, then shutter is slower, the vehicle quickly moved can be caused to occur trailing and obscure, car plate
Information is difficult to differentiate.Intellectual analysis video flowing uses the spectrum assignment strategy of shutter priority；Video stream uses lightness preference
Spectrum assignment strategy, a camera is difficult the effect for accomplishing to take into account video effect and intellectual analysis.This way is using a phase
Machine, disclosure satisfy that the demand of some applications, but many applications can attend to one thing and lose sight of another, and influence whole structure.
The present invention carries out shunting spectrum assignment and data processing using a high definition camera to frame of video.Intellectual analysis is regarded
Frequency stream is using the exposure control parameter and image processing algorithm needed for intellectual analysis video flowing, and video stream uses video record
Required image exposure control parameter and image processing algorithm, the video control parameters of two streams are completely independent, and both meet intelligence
The need for analysis application, while the need for also meeting video record application, the problem of solving in above-mentioned current sector application is excellent
Gesture is clearly.
The content of the invention
It is an object of the invention to provide the image flow-dividing control method and its device of a kind of high definition camera, one can be used
Platform high definition camera, shunting spectrum assignment and data processing are carried out to frame of video, produce intellectual analysis video flowing and video stream,
The demand that intellectual analysis is applied and video record is applied is met simultaneously.
In order to solve the above technical problems, embodiments of the present invention disclose a kind of image flow-dividing control side of high definition camera
Method, following steps are repeated to same camera：
Judge the stream type belonging to next frame video；
For the camera, the acquisition parameters corresponding to the stream type are set；
Control camera to shoot a frame video, and the frame of video is added in corresponding video flowing.
Embodiments of the present invention also disclose a kind of image flow division control device of high definition camera, including：
Type judging unit, for judging the stream type belonging to next frame video；
Parameter set unit, is that camera sets the stream type for the stream type judged according to type judging unit
Corresponding acquisition parameters；
Control unit, for the acquisition parameters according to set by parameter set unit, control camera shoots a frame video；
Processing unit, for controlling the frame of video captured by camera to be added in corresponding video flowing control unit.
Compared with prior art, the main distinction and its effect are embodiment of the present invention：
Same camera exports each frame and is belonging respectively to two streams, and one is pressed analysis optimization parameter, and one is pressed monitoring Optimal Parameters,
The frame belonging to cocurrent flow is not shot using different parameters, and the multiple of different demands can be met with parallel output using same camera
Stream.
Further, intellectual analysis video flowing is calculated using the exposure control parameter and image procossing needed for intellectual analysis stream
Method, video stream is using image exposure control parameter and image processing algorithm needed for video record, the video control of two stream
Parameter processed is completely independent, and has both met the application demand of intellectual analysis, while can also meet the application demand of video record, Ji Nengbao
The good effect of card, can significantly reduce equipment cost again.
Further, carry out rational distribution by the frame of video to camera to use, such as total frame per second/2 are recorded for video
Picture, total frame per second/2 are used for intellectual analysis, but are not limited to 1/2 method of salary distribution, and different streams use different image-control parameters
And image processing techniques, a machine double-purpose or multi-purpose purpose are reached, the integrated level of equipment is improved, whole project cost is reduced.
Brief description of the drawings
Fig. 1 is a kind of schematic flow sheet of the image flow-dividing control method of high definition camera in first embodiment of the invention；
Fig. 2 is a kind of structural representation of the image flow division control device of high definition camera in second embodiment of the invention；
Fig. 3 is a kind of integrated stand composition of the image flow division control device of high definition camera in third embodiment of the invention；
Fig. 4 is a kind of structural representation of the image flow division control device of high definition camera in third embodiment of the invention；
Fig. 5 be a kind of image flow division control device of high definition camera in third embodiment of the invention sensor control with
The working timing figure of synchronization module；
Fig. 6 is a kind of image processing and analyzing of the image flow division control device of high definition camera in third embodiment of the invention
The workflow diagram of control module.
Embodiment
In the following description, in order that reader more fully understands the application and proposes many ins and outs.But, this
Even if the those of ordinary skill in field is appreciated that many variations without these ins and outs and based on following embodiment
And modification, each claim of the application technical scheme claimed can also be realized.
To make the object, technical solutions and advantages of the present invention clearer, the implementation below in conjunction with accompanying drawing to the present invention
Mode is described in further detail.
First embodiment of the invention is related to a kind of image flow-dividing control method of high definition camera.Fig. 1 is the high definition camera
Image flow-dividing control method schematic flow sheet.
Specifically, as shown in figure 1, the image flow-dividing control method of the high definition camera same camera is repeated it is following
Step：
In a step 101, the stream type belonging to next frame video is judged.
Preferably, the stream type includes the video flowing for the video flowing of intellectual analysis and for monitoring video.
Furthermore, it is to be understood that in some other embodiments of the present invention, stream type includes but is not limited to the two,
It is also likely to be multiple video flowings.
Then into step 102, the acquisition parameters corresponding to the stream type are set for the camera.
Further, specifically, the acquisition parameters include gain and shutter.
Intellectual analysis video flowing uses the exposure control parameter and image processing algorithm needed for intellectual analysis stream, video
Stream is using the image exposure control parameter and image processing algorithm needed for video record, and the video control parameters of two streams are completely only
It is vertical, the application demand of intellectual analysis had both been met, while can also meet the application demand of video record, good effect has both been can guarantee that
Really, equipment cost can be significantly reduced again.
Then into step 103, control camera shoots a frame video, and the frame of video is added into corresponding video flowing
In.
In the step of control camera shoots a frame video, for the frame of video of intellectual analysis and for monitoring video
Frame of video is shot according to 1 to 1 frame period.
Furthermore, it is to be understood that the present invention some other embodiments in, for intellectual analysis frame of video and be used for
The frame of video of monitoring video can also be shot according to other frame period ratio, and be not limited only to 1 to 1 mode.
In the present embodiment, it is preferable that the frame of video captured by same camera includes two streams, one is to be used for intelligence
The video flowing that can be analyzed, another is the video flowing for monitoring video.For the frame of video of intellectual analysis and for monitoring record
The frame of video of picture is shot according to 1 to 1 frame period.
Furthermore it is preferred that can also include three streams in frame of video captured by same camera, one is to be used for intelligence point
The video flowing of analysis, one is video flowing for monitoring video, and also one is to capture stream.Frame of video for intellectual analysis,
For being shot between the frame of video and candid photograph frame of monitoring video according to random ratio.
Certainly, this is intended merely to more fully understand several ways that are of the invention and enumerating, is not limited thereto.
Used by carrying out rational distribution to the frame of video of camera, such as total frame per second/2 are used for video record, total frame per second/
2 are used for intellectual analysis, but are not limited to 1/2 method of salary distribution, and different streams use different image-control parameter and image procossing
Technology, reaches a machine double-purpose or multi-purpose purpose, improves the integrated level of equipment, reduces whole project cost.In the control camera
It is further comprising the steps of after the step of shooting a frame video：
Stream type according to belonging to the frame of video, marks the sign for representing different stream types in blanking interval for the frame of video
Symbol.
For example, the indications of correspondence monitoring video frame of video are FF000000, the indications of correspondence intellectual analysis frame of video
For FF000001.
Be added to and by the frame of video in the step in corresponding video flowing, be according to the frame of video in blanking interval
Indications, and the stream type according to represented by indications, the frame of video is added in corresponding video flowing.
Same camera exports each frame and is belonging respectively to two streams, and one is pressed analysis optimization parameter, and one is pressed monitoring Optimal Parameters,
The frame belonging to cocurrent flow is not shot using different parameters, and the multiple of different demands can be met with parallel output using same camera
Stream.
Hereafter step 101 is turned again to.
The each method embodiment of the present invention can be realized with modes such as software, hardware, firmwares.No matter the present invention be with
Software, hardware or firmware mode realize that instruction code may be stored in the addressable memory of any kind of computer
In（It is for example permanent or revisable, it is volatibility or non-volatile, it is solid-state or non-solid, it is fixed or
Replaceable medium of person etc.）.Equally, memory may, for example, be programmable logic array（Programmable Array
Logic, referred to as " PAL "）, random access memory（Random Access Memory, referred to as " RAM "）, programmable read-only deposit
Reservoir（Programmable Read Only Memory, referred to as " PROM "）, read-only storage（Read-Only Memory, letter
Claim " ROM "）, Electrically Erasable Read Only Memory（Electrically Erasable Programmable ROM, referred to as
“EEPROM”）, disk, CD, digital versatile disc（Digital Versatile Disc, referred to as " DVD "）Etc..
Second embodiment of the invention is related to a kind of image flow division control device of high definition camera.Fig. 2 is the high definition camera
Image flow division control device structural representation.
Specifically, as shown in Fig. 2 the image flow division control device of the high definition camera includes：
Type judging unit, for judging the stream type belonging to next frame video.
Preferably, the stream type includes the video flowing for the video flowing of intellectual analysis and for monitoring video.
In the present embodiment, it is preferable that the frame of video captured by same camera includes two streams, one is to be used for intelligence
The video flowing that can be analyzed, another is the video flowing for monitoring video.For the frame of video of intellectual analysis and for monitoring record
The frame of video of picture is shot according to 1 to 1 frame period.
Furthermore it is preferred that can also include three streams in frame of video captured by same camera, one is to be used for intelligence point
The video flowing of analysis, one is video flowing for monitoring video, and also one is to capture stream.Frame of video for intellectual analysis,
For being shot between the frame of video and candid photograph frame of monitoring video according to random ratio.
Certainly, this is intended merely to more fully understand several ways that are of the invention and enumerating, is not limited thereto.
Parameter set unit, is that camera sets the stream type for the stream type judged according to type judging unit
Corresponding acquisition parameters.
Further, specifically, the parameter set unit is that the acquisition parameters that camera is set include gain and shutter.
Control unit, for the acquisition parameters according to set by parameter set unit, control camera shoots a frame video.
Processing unit, for controlling the frame of video captured by camera to be added in corresponding video flowing control unit.
In addition, the image flow division control device of the high definition camera also includes：
Frame type designation unit, for the stream type belonging to the frame of video according to captured by camera, being in blanking interval should
Frame of video mark represents the indications of different stream types.
First embodiment is the method embodiment corresponding with present embodiment, and present embodiment can be implemented with first
Mode is worked in coordination implementation.The relevant technical details mentioned in first embodiment are still effective in the present embodiment, in order to
Reduce and repeat, repeat no more here.Correspondingly, the relevant technical details mentioned in present embodiment are also applicable in the first implementation
In mode.
Third embodiment of the invention is related to a kind of image flow division control device of high definition camera.Fig. 3 is that a kind of high definition is more
The integrated stand composition of the image flow division control device of function intelligent network camera.
As shown in figure 3, whole high definition multifunctional intellectual network cameras includes three parts：sensor（Sensor）Module,
sensor（Sensor）Control and shunting synchronization module, image shunting Treatment Analysis and control module.
Sensor assembly, the video flowing for producing high definition；
Sensor controls to shunt processing with control module according to monitoring video with shunting synchronization module, mainly reception image
The image exposure control of video flowing or intellectual analysis video flowing and acquisition parameters, timesharing are allocated to the sensor module, together
When control the sensor assembly to be produced corresponding video flowing according to acquisition parameters, finally to the monitoring video video flowing of generation
Indicated with intellectual analysis video flowing；
Image shunting processing and control module, are mainly controlled with shunting synchronization module according to Video Stream type sensor
Indications are identified and separate video flowing, and two video flowings after separation are carried out with different Image Processing parameter or algorithm
Video stream, is finally used for surveillance video by processing, and intellectual analysis video flowing is used for intellectual analysis application.Count simultaneously
Calculate different exposure parameters and other front end parameters not required for cocurrent flow and be sent to sensor control and shunting synchronization module.
Fig. 4 is a kind of structural representation of the image flow division control device of high definition camera in third embodiment of the invention.
In third embodiment of the invention, detailed technical scheme passes through 50 frame 1920*1080P intelligent CCDs
（Charge-coupled Device, charge coupled cell）Network cameras is realized, is used for video record, 25 frames with 25 frame videos
Video, which is used for intellectual analysis, to be used to illustrate for example.
As shown in figure 4, sensor assembly 101 includes ccd image sensor, AFE（Active Front End, before active
End）And associated driver circuitry, the video flowing needed for for being produced according to sensor control block.
Sensor assembly 101 includes the ccd image sensor and four road AFE cores of 1920*1080 resolution ratio in this example
Piece, wherein CCD are photo-sensitive cell, and AFE is driven collection to CCD and quantified, in the case where sensor controls the control with synchronization module,
CCD produces 50fps video flowing, and wherein 25fps is used for video stream, and 25fps is used for intellectual analysis video flowing.
Sensor controls to include image pre-processing module 201-1, frame type designation module 201-2, control with synchronization module 201
Parameter processed uses FPGA with audio video synchronization module 201-3 and sensor control and parameter performing module 201-4, this module（It is existing
Field programmable gate array）Realize.
Image pre-processing module 201-1 is mainly corrected to CCD original images, compensates the uniformity of image and uniform
Property.Because video stream and intellectual analysis video flowing have respective exposure parameter to control, different exposure parameter correspondences are different
Correction parameter, such as current video exposure parameter shutter shutter_V=20ms, gain gain_V=36dB, current intelligence
Video analysis video flowing exposure parameter shutter shutter_A=2ms, gain gain_A=18dB.Different video flowings need difference
Correction parameter be respectively Ca, Cv, these parameters are regarded by control parameter with audio video synchronization module 201-3 control actions to corresponding
On frequency stream so that image reaches optimal effect.
Frame type designation module 201-2 obtains present frame according to control parameter and audio video synchronization module 201-3 control
It is video record frame or intellectual analysis frame, and different frame is indicated, if video record frame just adds in blanking interval
Video record frame indications " FF000000 "；If intellectual analysis frame of video then adds intellectual analysis frame of video mark in blanking interval
Show symbol " FF000001 ".
The control parameter is mainly responsible for receiving image shunting Treatment Analysis control module 301 with audio video synchronization module 201-3
The video stream parameter sended over and intellectual analysis video flowing parameter, parameter include the shutter shutter_ of video stream
V, gain gain_V（Being generally used for the video flowing especially night of video recording needs to ensure enough brightness, sets most making public for camera
Light value, is herein shutter_V=20ms, gain_V=36db）And the shutter shutter_A of intellectual analysis video flowing, gain
gain_A（Being generally used for intellectual analysis video flowing should ensure that certain night brightness considers to recognize mobile object again, set
The exposure value of camera generally requires compromise, herein shutter_V<5ms, gain_V=18db）, the control parameter and audio video synchronization
Module 201-3 control sensor controls and parameter performing module 201-4, according to a frame video record frame, a frame video analysis frame
Over-over mode sends driver' s timing with front end parameter to the sensor module 101.
The sensor controls mainly to be in response to above-mentioned control parameter and audio video synchronization module with parameter performing module 201-4
201-3 control, produces shutter and gain that sensor actuation signal, shunting perform configuration.
Fig. 5 be a kind of image flow division control device of high definition camera in third embodiment of the invention sensor control with
The working timing figure of synchronization module.
As shown in figure 5, the sensor controls the workflow with synchronization module 201 to be：
Working condition S1：Wait state is in, present frame n-1 is waited（It is assumed to be intellectual analysis frame）End；
Working condition S2：Present frame n-1 terminates, and the sensor control sends new frame n frames with performing module 201-4
Driver' s timing, n frames video record frame synchronizing signal/drive signal is issued to the sensor module 101, while notifying above-mentioned control
Parameter processed and audio video synchronization module 201-3, the control parameter receives n frame starting signals with audio video synchronization module 201-3, and passes
Pass and state front end parameter shutter shutter_V and gain gain_V to sensor control and parameter performing module 201-4, perform
Module is performed at once.Come into force due to being exposed on present frame, and gain then works in next frame, corresponds to this time for exposure and gain
Video data be next frame video.So flowing through above-mentioned image preprocessing between when the current frame for intellectual analysis video requency frame data
Module 201-1 and above-mentioned frame type designation module 201-2.Corresponding intellectual analysis video flowing pretreatment parameter is performed, and finally should
Frame type designation module 201-2 adds intellectual analysis video flowing indications " FF000001 " in frame suppression period.Into wait shape
State S1, waiting n frame end starts S3 states.
Working condition S3：Synchronizing signal/the drive signal for initiating n+1 frames is issued to the sensor module 101, opens new
A frame intellectual analysis frame, while notifying above-mentioned control parameter and audio video synchronization module 201-3, the control parameter and audio video synchronization
Module 201-3 receives n+1 frame starting signals, and transmits front end parameter shutter shutter_A and gain gain_A to above-mentioned biography
Sensor controls to perform at once with parameter performing module 201-4, performing module.So being video frame data between when the current frame
Flow through above-mentioned image pre-processing module 201-1 and above-mentioned frame type designation module 201-2, corresponding video stream pretreatment ginseng
Number is performed, and finally frame type designation module 201-2 adds intellectual analysis video flowing indications in frame suppression period
“FF000000”.Then, into wait state S1, waiting n frame end starts S2 states, repeats above state.
Image shunting processing includes frame identifier module 301-1, ISP with control module 301（Image Signal
Process）Processing module 301-2, image parameter control module 301-3, intelligent analysis module 301-4 and video record mould
Block 301-5, whole module passes through SOC（System On Chip, on-chip system）Realize.
Frame identifier module 301-1, the method identification for indicating module 201-2 signs according to above-mentioned frame category is each
Frame is video record frame or intellectual analysis frame, when detecting " FF000000 " indications during picture blanking, then present frame
For video record frame, and interruption 0 is produced to image parameter control module 301-3；When being detected during picture blanking
" FF000001 " indications, then present frame is intellectual analysis frame, and produces interruption 1 to above-mentioned image parameter control module 301-3.
ISP processing modules 301-2 is used for according to the image parameter control module 301-3 different video stream configurations produced
Different parameters complete the image procossing to video flowing.
3A statistical modules inside image parameter control module 301-3 carry out independent respectively according to interruption to different streams
The exposure parameter of not cocurrent flow, to produce the parameters such as shutter, gain, and AWB, and is sent to above-mentioned control parameter and video by statistics
Synchronization module 201.Also include ISP parameter modules in image parameter control module 301-3, according to interruption different video stream
Other ISP parameter roles are on corresponding stream.
Other ISP parameters are then pre-designed.
ISP processing module 301-2, are handled video flowing, the effect and ISP relating to parameters of processing.
Intelligent analysis module 301-4, is used for follow-up intelligence for isolating intellectual analysis video flowing from total video stream
Parser, meets intelligent use demand.
Video record module 301-5, is used for follow-up video monitoring for isolating video stream from total video stream
Video recording is used, and meets video surveillance applications demand.
Fig. 6 is a kind of image processing and analyzing of the image flow division control device of high definition camera in third embodiment of the invention
The workflow diagram of control module.
As shown in fig. 6, the workflow of the image processing and analyzing control module is as follows：
Above-mentioned frame identifier module 301-1 indicates each frame of method identification that module is indicated according to above-mentioned 201-2 frame categories
It is video record frame or intellectual analysis frame.When detecting " FF000000 " indications during picture blanking, then present frame is
Video record frame, and interruption 0 is produced to above-mentioned image parameter control module 301-3；When being detected during picture blanking
" FF000001 " indications, then present frame is intellectual analysis frame, and produces interruption 1 to image parameter control module 301-3.
50fps sequence of frames of video gives the 3A statistical modules in image parameter control module 301-3, and by interrupting 0,
Interrupt 1 and inform 3A statistical modules, 3A statistical modules realize shunting statistics, interrupt 0 interval scale video record frame when receiving, statistics
The statistical value of video record frame is temporarily stored in ram0；1 interval scale intellectual analysis frame of video is interrupted when receiving, intellectual analysis is counted
The statistical value of frame of video is temporarily stored in ram1.Each frame video record frame is entered at row iteration in ram0 to statistical value on time
Reason, similarly enters row iteration processing to the statistical value in ram1, and exposure parameter is such as in statistical result：shutter_A、gain_A、
Shutter_V, gain_V are sent to 201 modules.Parameter setting in AWB parameters in statistical result, ram0 is to video record stream
In, the parameter setting in ram1 is into intellectual analysis stream.Other ISP parameters are respectively configured and regarded to video recording also according to interruption simultaneously
Frequency stream and intellectual analysis video flowing.Other ISP parameters are that image parameter control module 301-3 is produced or developer is pre-
Designed parameter is first debugged, is allocated to ISP processing modules 301-2's
After video data is by above-mentioned ISP data processing module 301-2, according to interrupting 0,1 is interrupted, the total frame per second of video is
50fps is split into 25fps video records stream and 25fps intellectual analysis video flowings.Final 25fps video records stream input video recording
Module, meets for demand of recording a video, and is separately used for intellectual analysis for 25fps input intelligent analysis modules, meets various
Intellectual analysis demand.
It should be noted that each unit or module mentioned in each equipment embodiment of the invention are all logic unit or mould
Block, physically, a logic unit or module can be a physical location or module or a physical location or
A part for module, can also be realized, the thing of these logic units or module in itself with the combination of multiple physical locations or module
Reason implementation is not most important, and the combination for the function that these logic units or module are realized is only solution institute of the present invention
The key of the technical problem of proposition.In addition, the innovative part in order to protrude the present invention, the above-mentioned each equipment embodiment of the present invention is simultaneously
It will not introduced with solving technical problem relation proposed by the invention less close unit or module, this is not intended that above-mentioned
Simultaneously other units or module is not present in equipment embodiment.
It should be noted that in the claim and specification of this patent, such as first and second or the like relation
Term is used merely to make a distinction an entity or operation with another entity or operation, and not necessarily requires or imply
There is any this actual relation or order between these entities or operation.Moreover, term " comprising ", "comprising" or its
Any other variant is intended to including for nonexcludability so that process, method, article including a series of key elements or
Equipment not only includes those key elements, but also other key elements including being not expressly set out, or also include be this process,
Method, article or the intrinsic key element of equipment.In the absence of more restrictions, by wanting that sentence " including one " is limited
Element, it is not excluded that also there is other identical element in the process including the key element, method, article or equipment.
Although by referring to some of the preferred embodiment of the invention, being shown and described to the present invention,
It will be understood by those skilled in the art that can to it, various changes can be made in the form and details, without departing from this hair
Bright spirit and scope.
Claims (9)
1. a kind of image flow-dividing control method of high definition camera, it is characterised in that following steps are repeated to same camera：
Judge the stream type belonging to next frame video；
For the camera, the acquisition parameters corresponding to the stream type are set, the stream type include for intellectual analysis video flowing and
Video flowing for monitoring video；
Control camera to shoot a frame video, and the frame of video is added in corresponding video flowing.
2. the image flow-dividing control method of high definition camera according to claim 1, it is characterised in that the acquisition parameters bag
Include gain and shutter.
3. the image flow-dividing control method of high definition camera according to claim 2, it is characterised in that described to be used for intelligence point
The frame of video of analysis and frame of video for monitoring video are shot according to 1 to 1 frame period.
4. the image flow-dividing control method of high definition camera according to claim 3, it is characterised in that the stream type includes
Video flowing for intellectual analysis, the video flowing for monitoring video and candid photograph stream, frame of video, the use for intellectual analysis
Shot between the frame of video and candid photograph frame of monitoring video according to random ratio.
5. the image flow-dividing control method of high definition camera according to any one of claim 1 to 4, it is characterised in that
It is further comprising the steps of after the step of control camera shoots a frame video：
Stream type according to belonging to the frame of video, marks the sign for representing different stream types in this two field picture for the frame of video
Symbol.
6. the image flow-dividing control method of high definition camera according to claim 5, it is characterised in that described and regard this
Frequency frame is added in the step in corresponding video flowing, is the indications according to the frame of video, and according to indications institute table
The stream type shown, the frame of video is added in corresponding video flowing.
7. a kind of image flow division control device of high definition camera, it is characterised in that including：
Type judging unit, for judging the stream type belonging to next frame video；
Parameter set unit, is that camera sets the stream type for the stream type judged according to the type judging unit
Corresponding acquisition parameters, the stream type includes the video flowing for the video flowing of intellectual analysis and for monitoring video；
Control unit, for the acquisition parameters according to set by the parameter set unit, control camera shoots a frame video；
Processing unit, for controlling the frame of video captured by camera to be added in corresponding video flowing described control unit.
8. the image flow division control device of high definition camera according to claim 7, it is characterised in that the parameter setting list
Member includes gain and shutter for camera setup photographs parameter.
9. the image flow division control device of high definition camera according to claim 8, it is characterised in that also include：
Frame type designation unit, is described in this two field picture for the stream type belonging to the frame of video according to captured by camera
Frame of video mark represents the indications of different stream types.
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| CN108961169A (en) * | 2017-05-22 | 2018-12-07 | 杭州海康威视数字技术股份有限公司 | Monitor grasp shoot method and device |
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