CN104243834A - Image streaming dividing control method and device of high-definition camera - Google Patents
Image streaming dividing control method and device of high-definition camera Download PDFInfo
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Abstract
The invention relates to the field of intelligent transportation and discloses an image streaming dividing control method and device of a high-definition camera. The following steps are executed on the same camera and includes that the streaming type which the next frame of videos belong to is judged; shooting parameters corresponding to the streaming type are set for the camera; the camera is controlled to shoot a frame of videos, and the frame of videos is added into the corresponding video streaming. One high-definition camera is adopted for performing streaming dividing exposure control and data processing on the video frames, exposure control parameters and an image processing algorithm needed by intelligent analysis of the video streaming are adopted for intelligent analysis of the video streaming, exposure control parameters and an image processing algorithm needed by video recording are adopted for recording the video streaming, multiple kinds of streaming meeting different requirements can be output in parallel with one camera, the video control parameters of the different kinds of streaming are completely independent, the requirement for intelligent analysis application can be met, the requirement for video recording application is met, and the image streaming dividing control method and device have obvious advantages.
Description
Technical field
The present invention relates to intelligent transportation field, particularly a kind of image flow-dividing control technology of high definition camera.
Background technology
Along with the propelling that safe city is built, and the development of intelligent transportation field, crossroad monitoring and traditional intelligent transportation application, as bayonet socket, electronic police application, gradually in fusion, in order to cost-saving, proposes new demand to current intelligent transportation industry camera, needs can meet traditional intelligence traffic application, also can meet the monitoring video application at crossing.
At present in intelligent transportation sector application, intellectual analysis application should be realized, realize common monitoring video again, mobile object information in general intelligence application Water demand scene, the exposure of camera will limit, and such as shutter shutter is less than 5ms, in order to ensure to analyze scene noise within the specific limits, gain gain also will limit, and such as gain is less than 18dB.But for common surveillance video, generally need to ensure that night scene scene is enough bright, the camera maximum exposure time is set and maximum gain satisfies the demands.For in intelligent transportation sector application, should realize intellectual analysis application, realize common monitoring video again, solution common at present has the following two kinds:
1) with two high definition cameras: a corresponding image-control parameter of high definition intelligent camera configuration intelligent use, and image processing algorithm, to reach the optimum efficiency of this intelligent use; Another is corresponding image-control parameter for network monitoring video camera configures, and image processing algorithm, to reach surveillance video optimum efficiency.This way can ensure good effect, but adopts two cameras, and engineering relative complex, equipment cost is high.
2) lead to high definition intelligent camera with a Daepori: in the scene that illumination at night is insufficient, if the preferential shooting met moving vehicle, shutter is very fast, and vehicle ' s contour is clear without hangover, but video pictures can be caused partially dark, loses the details of dark place; If preferentially meet picture brightness to promote dark place details, then shutter is comparatively slow, and the vehicle of rapid movement can be caused to occur hangover and fuzzy, and license board information is difficult to resolution.Intellectual analysis video flowing adopts the spectrum assignment strategy of shutter priority; Video stream adopts the spectrum assignment strategy of lightness preference, and camera is difficult to the effect accomplishing to take into account video effect and intellectual analysis.This way adopts a camera, can meet the demand of some application, but a lot of application can be attended to one thing and lose sight of another, and affects whole structure.
The present invention adopts a high definition camera, carries out shunting spectrum assignment and data processing to frame of video.Exposure control parameter needed for intellectual analysis video flowing employing intellectual analysis video flowing and image processing algorithm, video stream adopts image exposure controling parameters needed for video record and image processing algorithm, the video control parameters of two streams is completely independent, both the needs of intellectual analysis application had been met, also meet the needs of video record application simultaneously, solve the problem in above-mentioned current sector application, advantage clearly.
Summary of the invention
The object of the present invention is to provide a kind of image flow-dividing control method and device thereof of high definition camera, a high definition camera can be adopted, shunting spectrum assignment and data processing are carried out to frame of video, produce intellectual analysis video flowing and video stream, meet the demand of intellectual analysis application and video record application simultaneously.
For solving the problems of the technologies described above, embodiments of the present invention disclose a kind of image flow-dividing control method of high definition camera, repeat following steps to same camera:
Judge the stream type belonging to next frame video;
For this camera arranges the acquisition parameters corresponding to this stream type;
Control camera and take a frame video, and this frame of video is joined in corresponding video flowing.
Embodiments of the present invention also disclose a kind of image flow division control device of high definition camera, comprising:
Type judging unit, for judging the stream type belonging to next frame video;
Parameter set unit, for the stream type judged according to type judging unit, for camera arranges the acquisition parameters corresponding to this stream type;
Control unit, for the acquisition parameters set by parameter set unit, controls camera and takes a frame video;
Processing unit, for by control unit, the frame of video controlled captured by camera joins in corresponding video flowing.
Compared with prior art, the main distinction and effect thereof are embodiment of the present invention:
Same camera exports each frame and belongs to two streams respectively, presses analysis optimization parameter for one, and one by monitoring Optimal Parameters, the frame belonging to various flows adopts the shooting of different parameter, uses same camera can meet multiple streams of different demand by parallel output.
Further, exposure control parameter needed for intellectual analysis video flowing employing intellectual analysis stream and image processing algorithm, video stream adopts image exposure controling parameters needed for video record and image processing algorithm, the video control parameters of two streams is completely independent, both the application demand of intellectual analysis had been met, also can meet the application demand of video record simultaneously, good effect can be ensured, significantly can reduce equipment cost again.
Further, by reasonably distributing use to the frame of video of camera, such as total frame per second/2 are for video record, total frame per second/2 are for intellectual analysis, but be not limited to the method for salary distribution of 1/2, homogeneous turbulence does not adopt different image-control parameter and image processing techniques, reach a machine double-purpose or multiplex object, the integrated level of raising equipment, reduces whole project cost.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the image flow-dividing control method of a kind of high definition camera in first embodiment of the invention;
Fig. 2 is the structural representation of the image flow division control device of a kind of high definition camera in second embodiment of the invention;
Fig. 3 is the integrated stand composition of the image flow division control device of a kind of high definition camera in third embodiment of the invention;
Fig. 4 is the structural representation of the image flow division control device of a kind of high definition camera in third embodiment of the invention;
Fig. 5 is that the transducer of the image flow division control device of a kind of high definition camera in third embodiment of the invention controls the working timing figure with synchronization module;
Fig. 6 is the workflow diagram of the image processing and analyzing control module of the image flow division control device of a kind of high definition camera in third embodiment of the invention.
Embodiment
In the following description, many ins and outs are proposed in order to make reader understand the application better.But, persons of ordinary skill in the art may appreciate that even without these ins and outs with based on the many variations of following execution mode and amendment, also can realize each claim of the application technical scheme required for protection.
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiments of the present invention are described in further detail.
First embodiment of the invention relates to a kind of image flow-dividing control method of high definition camera.Fig. 1 is the schematic flow sheet of the image flow-dividing control method of this high definition camera.
Specifically, as shown in Figure 1, the image flow-dividing control method of this high definition camera repeats following steps to same camera:
In a step 101, the stream type belonging to next frame video is judged.
Preferably, this stream type comprises the video flowing for intellectual analysis and the video flowing for monitoring video.
In addition, being appreciated that stream type includes but not limited to these two in some other execution mode of the present invention, also may be multiple video flowing.
After this step 102 is entered, for this camera arranges the acquisition parameters corresponding to this stream type.
Further, specifically, this acquisition parameters comprises gain and shutter.
Exposure control parameter needed for intellectual analysis video flowing employing intellectual analysis stream and image processing algorithm, video stream adopts image exposure controling parameters needed for video record and image processing algorithm, the video control parameters of two streams is completely independent, both the application demand of intellectual analysis had been met, also can meet the application demand of video record simultaneously, good effect can be ensured, significantly can reduce equipment cost again.
After this enter step 103, control camera and take a frame video, and this frame of video is joined in corresponding video flowing.
Take in the step of a frame video at this control camera, the frame of video for intellectual analysis and the frame of video for monitoring video are taken according to the frame period of 1 to 1.
In addition, be appreciated that, in some other execution mode of the present invention, the frame of video for intellectual analysis and the frame of video for monitoring video also can be taken according to other frame period ratio, and are not limited only to the mode of 1 to 1.
In the present embodiment, preferably, the frame of video captured by same camera comprises two streams, and one is the video flowing for intellectual analysis, and another is the video flowing for monitoring video.Frame of video for intellectual analysis and the frame of video for monitoring video are taken according to the frame period of 1 to 1.
In addition, preferably, also can comprise three streams in the frame of video captured by same camera, one is the video flowing for intellectual analysis, and one is the video flowing for monitoring video, also has one to be capture stream.Frame of video for intellectual analysis, the frame of video for monitoring video and capturing between frame is taken according to random ratio.
Certainly, these several modes just enumerated to understand the present invention better, not as limit.
By reasonably distributing use to the frame of video of camera, such as total frame per second/2 are for video record, total frame per second/2 are for intellectual analysis, but be not limited to the method for salary distribution of 1/2, homogeneous turbulence does not adopt different image-control parameter and image processing techniques, reach a machine double-purpose or multiplex object, improve the integrated level of equipment, reduce whole project cost.After the step of a frame video taken by this control camera, further comprising the steps of:
According to the stream type belonging to this frame of video, for this frame of video mark represents the indications of various flows type in blanking interval.
Such as, the indications of corresponding monitoring video frame of video is FF000000, and the indications of corresponding intellectual analysis frame of video is FF000001.
And this frame of video is joined in the step in corresponding video flowing, be according to the indications of this frame of video in blanking interval, and the stream type represented by indications, this frame of video joined in corresponding video flowing.
Same camera exports each frame and belongs to two streams respectively, presses analysis optimization parameter for one, and one by monitoring Optimal Parameters, the frame belonging to various flows adopts the shooting of different parameter, uses same camera can meet multiple streams of different demand by parallel output.
After this again step 101 is got back to.
Each method execution mode of the present invention all can realize in modes such as software, hardware, firmwares.No matter the present invention realizes with software, hardware or firmware mode, instruction code can be stored in the addressable memory of computer of any type (such as permanent or revisable, volatibility or non-volatile, solid-state or non-solid, fixing or removable medium etc.).Equally, memory can be such as programmable logic array (Programmable Array Logic, be called for short " PAL "), random access memory (Random Access Memory, be called for short " RAM "), programmable read only memory (Programmable Read Only Memory, be called for short " PROM "), read-only memory (Read-Only Memory, be called for short " ROM "), Electrically Erasable Read Only Memory (Electrically Erasable Programmable ROM, be called for short " EEPROM "), disk, CD, digital versatile disc (Digital Versatile Disc, be called for short " DVD ") etc.
Second embodiment of the invention relates to a kind of image flow division control device of high definition camera.Fig. 2 is the structural representation of the image flow division control device of this high definition camera.
Specifically, as shown in Figure 2, the image flow division control device of this high definition camera comprises:
Type judging unit, for judging the stream type belonging to next frame video.
Preferably, this stream type comprises the video flowing for intellectual analysis and the video flowing for monitoring video.
In the present embodiment, preferably, the frame of video captured by same camera comprises two streams, and one is the video flowing for intellectual analysis, and another is the video flowing for monitoring video.Frame of video for intellectual analysis and the frame of video for monitoring video are taken according to the frame period of 1 to 1.
In addition, preferably, also can comprise three streams in the frame of video captured by same camera, one is the video flowing for intellectual analysis, and one is the video flowing for monitoring video, also has one to be capture stream.Frame of video for intellectual analysis, the frame of video for monitoring video and capturing between frame is taken according to random ratio.
Certainly, these several modes just enumerated to understand the present invention better, not as limit.
Parameter set unit, for the stream type judged according to type judging unit, for camera arranges the acquisition parameters corresponding to this stream type.
Further, specifically, this parameter set unit is that the acquisition parameters that camera is arranged comprises gain and shutter.
Control unit, for the acquisition parameters set by parameter set unit, controls camera and takes a frame video.
Processing unit, for by control unit, the frame of video controlled captured by camera joins in corresponding video flowing.
In addition, the image flow division control device of this high definition camera also comprises:
Frame type indicates unit, for the stream type belonging to the frame of video captured by camera, for this frame of video mark represents the indications of various flows type in blanking interval.
First execution mode is the method execution mode corresponding with present embodiment, and present embodiment can be worked in coordination with the first execution mode and be implemented.The relevant technical details mentioned in first execution mode is still effective in the present embodiment, in order to reduce repetition, repeats no more here.Correspondingly, the relevant technical details mentioned in present embodiment also can be applicable in the first execution mode.
Third embodiment of the invention relates to a kind of image flow division control device of high definition camera.Fig. 3 is a kind of integrated stand composition of image flow division control device of high definition multifunctional intellectual network cameras.
As shown in Figure 3, whole high definition multifunctional intellectual network cameras comprises three parts: sensor(transducer) module, sensor(transducer) control and shunting synchronization module, image shunting Treatment Analysis and control module.
Sensor assembly, for generation of the video flowing of high definition;
Transducer controls and shunting synchronization module, mainly receive image shunting process to control and acquisition parameters according to the image exposure of monitoring video video flowing or intellectual analysis video flowing with control module, timesharing configures to the sensor module, control this sensor assembly simultaneously and produced corresponding video flowing according to acquisition parameters, finally the monitoring video video flowing produced and intellectual analysis video flowing are indicated;
Image shunting process and control module, mainly control to carry out identification and separating video stream with shunting synchronization module according to Video Stream type indications to transducer, two video flowings different Image Processing parameter or algorithm after being separated are processed, finally video stream is used for surveillance video, intellectual analysis video flowing is used for intellectual analysis application.Calculate different exposure parameter required for various flows and other front end parameter send to transducer to control and shunting synchronization module simultaneously.
Fig. 4 is the structural representation of the image flow division control device of a kind of high definition camera in third embodiment of the invention.
In third embodiment of the invention, detailed technical scheme is by 50 frame 1920*1080P intelligent CCD (Charge-coupled Device, charge coupled cell) network cameras realization, be used for video record with 25 frame videos, 25 frame videos are used for intellectual analysis and are used for being described for example.
As shown in Figure 4, sensor assembly 101 comprises ccd image sensor, AFE(Active Front End, active front end) and associated driver circuitry, for the video flowing needed for sensor control block generation.
Sensor assembly 101 comprises ccd image sensor and the four tunnel AFE chip of 1920*1080 resolution in this example, wherein CCD is photo-sensitive cell, AFE carries out driving collection to CCD and quantizes, under the control that transducer controls with synchronization module, CCD produces the video flowing of 50fps, wherein 25fps is used for video stream, and 25fps is used for intellectual analysis video flowing.
Transducer control with synchronization module 201 comprises image pre-processing module 201-1, frame type indicates module 201-2, controling parameters and audio video synchronization module 201-3 and transducer controls and parameter Executive Module 201-4, this module employing FPGA(field programmable gate array) realization.
This image pre-processing module 201-1 mainly corrects CCD original image, the consistency of compensation image picture and uniformity.Because video stream and intellectual analysis video flowing have respective exposure parameter to control, the correction parameter that different exposure parameter is corresponding different, such as current video exposure parameter shutter shutter_V=20ms, gain gain_V=36dB, current intelligent video analysis video flowing exposure parameter shutter shutter_A=2ms, gain gain_A=18dB.Different video flowings needs different correction parameters to be respectively Ca, Cv, these parameters by controling parameters with audio video synchronization module 201-3 control action on corresponding video flowing, make the effect that image reaches best.
This frame type indicates the control of module 201-2 according to controling parameters and audio video synchronization module 201-3, obtaining present frame is video record frame or intellectual analysis frame, and different frame is indicated, if video record frame just adds video record frame indications " FF000000 " in blanking interval; If intellectual analysis frame of video then adds intellectual analysis frame of video indications " FF000001 " in blanking interval.
This controling parameters and audio video synchronization module 201-3 primary responsibility receive image and shunt the video stream parameter and intellectual analysis video flowing parameter that Treatment Analysis control module 301 sends over, parameter comprises the shutter shutter_V of video stream, the video flowing that gain gain_V(is generally used for video recording especially needs to ensure enough brightness night, the maximum exposure value of camera is set, be shutter_V=20ms herein, and the shutter shutter_A of intellectual analysis video flowing gain_V=36db), gain gain_A(is generally used for intellectual analysis video flowing should ensure that certain brightness at night is considered to identify mobile object again, the exposure value arranging camera generally needs compromise, shutter_V<5ms herein, gain_V=18db), this controling parameters and audio video synchronization module 201-3 control transducer and control and parameter Executive Module 201-4, according to a frame video record frame, one frame video analysis frame over-over mode transmission driver' s timing and front end parameter are to the sensor module 101.
This transducer controls the control mainly responding above-mentioned controling parameters and audio video synchronization module 201-3 with parameter Executive Module 201-4, produces sensor actuation signal, shunts the shutter and gain that perform configuration.
Fig. 5 is that the transducer of the image flow division control device of a kind of high definition camera in third embodiment of the invention controls the working timing figure with synchronization module.
As shown in Figure 5, the control of this transducer with the workflow of synchronization module 201 is:
Operating state S1: be in wait state, waits for that present frame n-1(is assumed to be intellectual analysis frame) end;
Operating state S2: present frame n-1 terminates, the sensor controls the driver' s timing sending a new frame n frame with Executive Module 201-4, n frame video record frame synchronizing signal/drive singal is issued to the sensor module 101, notify above-mentioned controling parameters and audio video synchronization module 201-3 simultaneously, this controling parameters and audio video synchronization module 201-3 receive n frame starting signal, and transmitting above-mentioned front end parameter shutter shutter_V and gain gain_V to the control of this transducer and parameter Executive Module 201-4, Executive Module performs at once.Come into force owing to being exposed on present frame, gain is then in next frame onset, and the video data of this time for exposure corresponding and gain is next frame video.So for intellectual analysis video requency frame data flows through above-mentioned image pre-processing module 201-1 and above-mentioned frame type indicates module 201-2 between when the current frame.Corresponding intellectual analysis video flowing pretreatment parameter performs, and finally this frame type sign module 201-2 adds intellectual analysis video flowing indications " FF000001 " at frame suppression period.Enter wait state S1, waiting n frame end, start S3 state.
Operating state S3: the synchronizing signal/drive singal of initiating n+1 frame is issued to the sensor module 101, open a new frame intellectual analysis frame, notify above-mentioned controling parameters and audio video synchronization module 201-3 simultaneously, this controling parameters and audio video synchronization module 201-3 receive n+1 frame starting signal, and transmitting front end parameter shutter shutter_A and gain gain_A to the sensor control and parameter Executive Module 201-4, Executive Module performs at once.So for video frame data flow through above-mentioned image pre-processing module 201-1 and above-mentioned frame type indicates module 201-2 between when the current frame, corresponding video stream pretreatment parameter is performed, and finally this frame type sign module 201-2 adds intellectual analysis video flowing indications " FF000000 " at frame suppression period.Subsequently, enter wait state S1, waiting n frame end, start S2 state, repeat above state.
This image shunting process comprises frame identifier module 301-1, ISP(Image Signal Process with control module 301) processing module 301-2, image parameter control module 301-3, intelligent analysis module 301-4 and video record module 301-5, whole module passes through SOC(System On Chip, SOC (system on a chip)) realize.
This frame identifier module 301-1, each frame of method identification indicated for indicating module 201-2 according to above-mentioned frame category is video record frame or intellectual analysis frame, when " FF000000 " indications being detected during picture blanking, then present frame is video record frame, and produces interruption 0 to image parameter control module 301-3; When " FF000001 " indications being detected during picture blanking, then present frame is intellectual analysis frame, and produces interruption 1 to above-mentioned image parameter control module 301-3.
The different video that this ISP processing module 301-2 is used for producing according to image parameter control module 301-3 is banishd the different parameters put and is completed image procossing to video flowing.
The 3A statistical module of this image parameter control module 301-3 inside is independently added up various flows respectively according to interruption, to produce shutter, gain, with parameters such as AWB, and the exposure parameter of various flows is sent to above-mentioned controling parameters and audio video synchronization module 201.ISP parameter module is also comprised, according to interrupting other ISP parameter roles of different video stream on the stream of correspondence in this image parameter control module 301-3.
Other ISP parameters then design in advance.
ISP processing module 301-2, processes video flowing, the effect of process and ISP relating to parameters.
Intelligent analysis module 301-4, for isolating intellectual analysis video flowing for follow-up intelligent analysis process from total video stream, meets intelligent use demand.
Video record module 301-5, for isolating video stream for follow-up surveillance video use from total video stream, meets video surveillance applications demand.
Fig. 6 is the workflow diagram of the image processing and analyzing control module of the image flow division control device of a kind of high definition camera in third embodiment of the invention.
As shown in Figure 6, the workflow of this image processing and analyzing control module is as follows:
Each frame of method identification that above-mentioned frame identifier module 301-1 indicates module sign according to above-mentioned 201-2 frame category is video record frame or intellectual analysis frame.When " FF000000 " indications being detected during picture blanking, then present frame is video record frame, and produces interruption 0 to above-mentioned image parameter control module 301-3; When " FF000001 " indications being detected during picture blanking, then present frame is intellectual analysis frame, and produces interruption 1 to this image parameter control module 301-3.
50fps sequence of frames of video gives the 3A statistical module in this image parameter control module 301-3, and by interruption 0, interrupt 1 and inform 3A statistical module, 3A statistical module realizes shunting statistics, when receiving interruption 0 interval scale video record frame, the statistical value of statistics video record frame is temporarily stored in ram0; When receiving interruption 1 interval scale intellectual analysis frame of video, the statistical value of statistics intellectual analysis frame of video is temporarily stored in ram1.Time iterates process to statistical value to each frame video record frame in ram0, in like manner process is iterated to the statistical value in ram1, in statistics exposure parameter as: shutter_A, gain_A, shutter_V, gain_V send to 201 modules.AWB parameter in statistics, the optimum configurations in ram0 is in video record stream, and the optimum configurations in ram1 is in intellectual analysis stream.Other ISP parameters are also according to interruption simultaneously, configure respectively to video stream and intellectual analysis video flowing.These other ISP parameters are that image parameter control module 301-3 produces or developer debugs the parameter designed in advance, configure to ISP processing module 301-2's
Video data is by after above-mentioned ISP data processing module 301-2, and according to interruption 0, interrupt 1, the total frame per second of video is that 50fps is split into 25fps video record stream and 25fps intellectual analysis video flowing.Final 25fps video record stream input picture recording module, meets for the demand of recording a video, and is separately used for intellectual analysis for 25fps inputs intelligent analysis module, meet various intellectual analysis demand.
It should be noted that, the each unit mentioned in the present invention's each equipment execution mode or module are all logical block or module, physically, a logical block or module can be a physical location or module, also can be a part for a physical location or module, can also realize with the combination of multiple physical location or module, the Physical realization of these logical blocks or module itself is not most important, and the combination of the function that these logical blocks or module realize is only the key solving technical problem proposed by the invention.In addition, in order to outstanding innovative part of the present invention, the unit not too close with solving technical problem relation proposed by the invention or module are not introduced by the above-mentioned each equipment execution mode of the present invention, and this does not show that the said equipment execution mode does not exist other unit or module.
It should be noted that, in the claim and specification of this patent, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element " being comprised " limited by statement, and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
Although by referring to some of the preferred embodiment of the invention, to invention has been diagram and describing, but those of ordinary skill in the art should be understood that and can do various change to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (10)
1. an image flow-dividing control method for high definition camera, is characterized in that, repeat following steps to same camera:
Judge the stream type belonging to next frame video;
For this camera arranges the acquisition parameters corresponding to this stream type;
Control camera and take a frame video, and this frame of video is joined in corresponding video flowing.
2. the image flow-dividing control method of high definition camera according to claim 1, it is characterized in that, described acquisition parameters comprises gain and shutter.
3. the image flow-dividing control method of high definition camera according to claim 2, it is characterized in that, described stream type comprises the video flowing for intellectual analysis and the video flowing for monitoring video, and the described frame of video for intellectual analysis and the frame of video for monitoring video are taken according to the frame period of 1 to 1.
4. the image flow-dividing control method of high definition camera according to claim 3, it is characterized in that, described stream type comprises the video flowing for intellectual analysis, the video flowing for monitoring video and captures stream, and the described frame of video for intellectual analysis, the frame of video for monitoring video and capturing between frame is taken according to random ratio.
5. the image flow-dividing control method of high definition camera according to any one of claim 1 to 4, is characterized in that, after the step of a frame video taken by described control camera, further comprising the steps of:
According to the stream type belonging to this frame of video, for this frame of video mark represents the indications of various flows type in this two field picture.
6. the image flow-dividing control method of high definition camera according to claim 5, it is characterized in that, described and this frame of video is joined in the step in corresponding video flowing, it is the indications according to this frame of video, and the stream type represented by described indications, this frame of video is joined in corresponding video flowing.
7. an image flow division control device for high definition camera, is characterized in that, comprising:
Type judging unit, for judging the stream type belonging to next frame video;
Parameter set unit, for the stream type judged according to described type judging unit, for camera arranges the acquisition parameters corresponding to this stream type;
Control unit, for the acquisition parameters set by described parameter set unit, controls camera and takes a frame video;
Processing unit, for joining the described control unit frame of video controlled captured by camera in corresponding video flowing.
8. the image flow division control device of high definition camera according to claim 7, is characterized in that, described parameter set unit is that camera setup photographs parameter comprises gain and shutter.
9. the image flow division control device of high definition camera according to claim 8, is characterized in that, described stream type comprises the video flowing for intellectual analysis and the video flowing for monitoring video.
10. the image flow division control device of high definition camera according to claim 9, is characterized in that, also comprise:
Frame type indicates unit, for the stream type belonging to the frame of video captured by camera, is the indications that described frame of video mark represents various flows type in this two field picture.
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| CN110971835A (en) * | 2019-12-24 | 2020-04-07 | 重庆紫光华山智安科技有限公司 | Monitoring method and device based on double-phase exposure |
| CN111225126A (en) * | 2018-11-23 | 2020-06-02 | 华为技术有限公司 | Multi-channel video stream generation method and device |
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