CN202818497U - Electronic PTZ device capable of monitoring based on high-definition digital camera - Google Patents
Electronic PTZ device capable of monitoring based on high-definition digital camera Download PDFInfo
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Abstract
The utility model relates to an electronic PTZ device capable of monitoring based on high-definition digital camera. The electronic PTZ device comprises a high-definition digital camera used to obtain a high-definition digital video stream; a high-definition digital decoder for decoding the high-definition digital video stream and outputting the decoded stream; an active window positioner used to obtain the position of an active window and the size information and output the information; an active window value-taking device for receiving, taking a graphic data of the corresponding area of the active window based on the position of the active window and the size information, and outputting the graphic data; an output video stream resolution obtaining device for obtaining the resolution of an output video stream and outputting the resolution; a frame image scaler for scaling the image in the movable window to obtain a frame image sequence in correspondence with the resolution of the video stream and outputting the frame image sequence; and a video coder for coding and outputting the frame image sequence. The big and small scenes on any moment are simultaneously acquired.
Description
Technical field
The utility model relates to technical field of video processing, specifically a kind of electronics PTZ device based on the high-definition digital camera head monitor.
Background technology
In recent years, fast development along with electronic industry especially novel sensor and mass storage devices, Video Supervision Technique more and more is subject to people's favor with its convenience, real-time and flexibility, it is by setting up camera, gather real-time field image, and with image by link transmission to the locality, the end user shows this image reduction, thereby can see on-the-spot real-time status at far-end.When the camera that sets up when different a plurality of scenes is transferred to a certain fixing concentration point with the real-time imaging of its collection, this place namely becomes the center of any one the place real-time imaging that can watch at any time access, and these characteristics become the basis that all industries are set up (comprising public safety, traffic etc.) command centre.Video Supervision Technique has become the extension of people's visually-perceptible, makes people can need not to be in its border and the scene present situation that can understand at any time a certain place.
Camera collection on-the-spot (also claiming " front end ") dynamic image also is transferred to a certain place of far-end (also claiming " rear end ") and realizes by frame image sequence.Be camera with the image (photo) at a certain fixing blanking time of continuous collecting scene, form a continuous image sequence (generally being referred to as frame image sequence), and show successively by original order after this image sequence is transferred to far-end, because the sensitization late effect of human eye, just can perceive continuous, the dynamic variation, thereby reach the effect that on-the-spot dynamic image is transferred to far-end.Thisly gather at the scene and be transferred to the frame image sequence that far-end shows by camera and generally be referred to as vision signal.Therefore, vision signal is comprised of two field picture.The vision signal here only refers to that the image frame grabber of front end and the two field picture of rear end show this mechanism, do not limit transmission route or mode between front end and the rear end, therefore the transmission of vision signal can be adopted various transmission means and transmission form, comprises analog signal transmission, digital data transmission, coding transmission, Optical Fiber Transmission etc.
After Video Supervision Technique had solved the problem of non-at-scene visually-perceptible, people no longer had been satisfied with the video definition of original standard analog camera.The standard analog camera is subjected to the restriction of its sensitization technology and signal standards, can only obtain the video quality of about 400,000 left and right sides pixel resolutions, and namely a width of cloth scene image only comprises about about 400,000 pixels and represents its visual information.When needs were checked detail from video, owing to need more pixel to represent the minutia of the target of watching, the field range of whole video will be confined to a less scope.When needs obtain whole video than large scene, then can't show more specifically details because the pixel quantity that accounts for is few for a certain less target in the scene.Therefore, traditional simulation camera video can't be taken into account the demand of " large scene " and " little details " two aspects.For solving this contradiction, the high-definition digital monitoring technique is developed rapidly.
The basis of high-definition digital monitoring technique is high-definition digital camera (being designated hereinafter simply as " high-definition camera ").High-definition camera can be exported high-resolution digital video information.Different from simulation camera output analog video signal, the video information of high-definition camera output adopts digital form, has the characteristics such as transmission is far away, strong interference immunity.And be with the difference of simulating the camera maximum, the digital video information of high-definition camera output is high-resolution, common high-definition camera resolution has reached 5,000,000 left and right sides pixel counts at present, namely form a width of cloth two field picture by about 5,000,000 pixels, the live video of seeing by this camera is in the situation that covers larger field range, for a certain less target in the visual field, also can distribute the pixel of a greater number to represent its minutia, solve the problem that " large scene " and " little details " taken into account.Because the vision signal of high-definition camera output has very high resolution, namely the contained pixel count of each two field picture is a lot, and along with the development of technology, its pixel count that comprises also can get more and more, and has occurred the high-definition camera of hundred million grades of pixel resolutions at present.Yet, although the resolution of camera constantly rises, make the details expressive ability of video pictures more and more stronger, lag behind video capture technology for the state of the art of video demonstration aspect.The display screen that is known as at present " full HD " is usually the highest can support the 1080P display resolution.1080P is a kind of video display format, is the format standard of the highest ranking digital TV in high resolution of American film Television Engineer association (SMPTE) formulation, and its effective display format is 1920 * 1080, and pixel count is about about 2,000,000 (207.36 ten thousand).Standard as the present highest ranking digital TV in high resolution form of formulating, also just mean for regard to single display screen, the highest display resolution of its support is about 2,000,000, if need to there be the video of more pixels to show at single display screen, then need the form of its decrease resolution to 1080P could be shown (certainly, the process of this reduction resolution belongs to the length and width geometric ratio and reduces, so that can not produce distortion).For example, when need to be single when showing the video of screen display one tunnel 5,000,000 pixels, the decrease resolution of video could must be shown to 1080P, otherwise can't provide so many pixels to come one by one corresponding each resolution point that shows 5,000,000 pixel video on the display screen, this must cause the loss of the details in the procedure for displaying.
The way that addresses this problem is to adopt multidisplay technology, namely makes up with a plurality of display screens simultaneously to show simultaneously one road HD video.Combination shows need to certain video processing technique, the utility model application is not done to relate to, and with regard to the result that combination shows, one road HD video is presented on a plurality of display screens, in order to each pixel in the HD video can both be able to there be the with it corresponding demonstration of a display pixel point.Show one road HD video (referring to that resolution is greater than the video of 1080P) a plurality of display screens of needs this moment, but part zone or less target in just this video scene of paying close attention to of people in general, and other also must occupy other several display screens in unconcerned zone, and this is equivalent to show the waste of resource.
Chinese patent literature CN101370128A discloses a kind of intelligent video monitoring system, comprises on-site supervision device and monitoring central server, and described on-site supervision device contains the The Cloud Terrace that drives the rig camera rotation; Described monitoring central server comprises video receiving apparatus, video storage device and order dispensing device, and, described monitoring central server also comprises tripod head controlling device, this device is comprised of object time analyzer and The Cloud Terrace path maker, the frequency of described object event parser generation monitoring objective event and the relation information of The Cloud Terrace attitude, described The Cloud Terrace path maker is according to this relation information planning The Cloud Terrace path.The disclosed supervisory control system of this patent documentation is owing to introduce video monitoring system with tripod head controlling device, and the real-time distribution of on-site target event is monitored in dynamic analysis, and generates accordingly the The Cloud Terrace motion path, effectively the captured target event.Cradle head control in this patent documentation adopts the PTZ agreement to realize usually, and then the control rig camera obtains predetermined image, wherein, PTZ is that Pan/Tilt/Zoom writes a Chinese character in simplified form, represent the mobile and camera lens zoom of The Cloud Terrace comprehensive (up and down, about), Zoom control, the PTZ agreement refers to the general designation of the series of protocols of Pan/Tilt/Zoom control; Realize common monitoring control PTZ, generally adopt the multicore line, controller is controlled the connection power supply of The Cloud Terrace, camera lens all directions with switch contact, moves to reach The Cloud Terrace, the purpose of camera lens zoom.Disclosed supervisory control system has satisfied the requirement of little details in this patent documentation when the captured target event, but but can not capture large scene, and just may there be omission in whole monitor video, causes monitoring the clear area; Equally, if just obtained the large scene video, the disappearance of details will be caused after then showing, large scene and little details can not be taken into account.And the machinery that passes through the control The Cloud Terrace in this patent documentation is adjusted the PTZ of video camera, can only obtain at any one time the video image of predetermined PTZ, when needs obtain the video image of other PTZ, can't realize because things have changed with the lapse of time.
The utility model content
For this reason, to be solved in the utility model is the technical problem that existing supervisory control system can't be taken into account the monitoring that the brings disappearance technical problem of large scene and little details, and a kind of electronics PTZ device based on the high-definition digital camera head monitor is provided.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is as follows:
A kind of electronics PTZ device based on the high-definition digital camera head monitor comprises:
The high-definition digital camera, the high-definition digital video stream and the output that are used for obtaining predetermined space;
The high-definition digital decoder receives described high-definition digital video stream and decodes and obtains high-definition digital video stream two field picture and output;
The active window locator, the position and size information and the output that are used for obtaining active window, wherein, the resolution of the two field picture part of described active window delineation is less than or equal to the video resolution of the high-definition digital camera of input;
Active window value device receives and according to position and the size information of described active window, extracts graph data and the output of described active window corresponding region from described high-definition digital video stream two field picture;
Outputting video streams resolution getter, the resolution sizes and the output that are used for obtaining outputting video streams;
The two field picture scaler is carried out convergent-divergent to the image in the active window according to the resolution sizes of outputting video streams, obtains meeting frame image sequence and the output of video flowing resolution sizes;
Video encoder receives described frame image sequence and the processing of encoding, the video code flow after obtaining encoding and output.
The resolution of described outputting video streams equals the resolution of viewing area.
The resolution of viewing area equals the resolution of display itself.
Described active window is rectangle, and the columns of the length-width ratio of described active window and the resolution of outputting video streams and line number are than identical.
Also comprise a display that is used for receiving and showing described video code flow.
Technique scheme of the present utility model has the following advantages compared to existing technology:
Device of the present utility model is by obtaining high-definition digital video stream, then the high definition video steaming decoding of having obtained is obtained high-definition digital video stream two field picture, then this high-definition digital video stream two field picture is carried out electronics PTZ control, obtain the two field picture in the scheduled event window, the method that is about to PTZ control The Cloud Terrace in the tradition applies to image and processes, as long as the image that obtains enough greatly and resolution abundant, just can guarantee to obtain the large scene video signal flow, can select simultaneously the predetermined little scene in the large scene image, and be amplified to predetermined resolution and show, guarantee that little scene is undistorted, by this high-definition digital image information of obtaining is carried out the PTZ processing, can obtain simultaneously large scene and the little scene in arbitrary moment.
The position of choosing active window is less than or equal to the video resolution of the high-definition digital camera of input, the high-definition digital video that obtains that the scope of selecting that guarantees energy drops on the high-definition digital camera flows in the scope of two field picture, and the selection of active window has practical significance.
In view of the rectangle that is of existing display, active window is defined as rectangle and limits the length-width ratio of active window and the resolution rectangle equal proportion of outputting video streams, can guarantee the image equal proportion method that active window is selected, avoid metamorphopsic distortion.
Description of drawings
For content of the present utility model is more likely to be clearly understood, the below is described in further detail the utility model, wherein according to specific embodiment of the utility model also by reference to the accompanying drawings
The electronics PTZ apparatus structure block diagram based on the high-definition digital camera head monitor of an embodiment of Fig. 1 the utility model;
Fig. 2 is the workflow diagram of device shown in Figure 1;
Reference numeral is expressed as among the figure: 1-high-definition digital camera, 2-high-definition digital decoder, 3-active window value device, 4-two field picture scaler, 5-video encoder, 6-display, 7-active window locator, 8-outputting video streams resolution getter.
Embodiment
Referring to shown in Figure 1, the electronics PTZ device based on the high-definition digital camera head monitor as a specific embodiment of the utility model specifically comprises:
High-definition digital camera 1, the high-definition digital video stream and the output that are used for obtaining predetermined space, in the present embodiment, the high-definition camera of first 5,000,000 pixels of described high-definition camera, its resolution sizes is 2996 * 2048; Wherein, high-definition camera refers to that pixel is greater than 400,000 camera in the utility model; Adopt the high-definition digital camera, can obtain the high large scene high-definition image of resolution, large scene determined by the scope of monitoring, can guarantee the integrality of the image that obtains; High-resolution can not lost details, processes for follow-up amplification and lays a good foundation.
High-definition digital decoder 2, the model of producing take Phillippe in the present embodiment as the PNX1500/1700 family chip as example, be used for receiving described high-definition digital video stream and decode and obtain high-definition digital video stream two field picture and output;
Active window value device 3, Leonardo da Vinci's series DM365 chip of producing take TI company in the present embodiment is as example, be used for obtaining position and size information and the output of active window, wherein, the resolution of the two field picture part of described active window delineation is less than or equal to the video resolution of the high-definition digital camera 1 of input; And described active window is rectangle, and the resolution rectangle equal proportion of the length-width ratio of described active window and outputting video streams; Because the maximum display resolution of the display screen of " full HD " is 1080P, therefore suppose that the resolution of display is 1080P, the resolution of the outputting video streams that then needs is 1080P, be that resolution sizes is 1920 * 1080, can take full advantage of like this display resolution of " full HD " display screen; As a specific embodiment, the active window size of choosing is 2996 * 1685, and the length-width ratio of this active window size is identical with 1080P, so that can the undistorted convergent-divergent of equal proportion when carrying out convergent-divergent; Simultaneously, the wide of the wide and original input video resolution of initial active window is identical, so the variation of active window can not move left and right, can not amplify, but because 1685＜2048, therefore can move up and down.Therefore, control active window value device 3 can only receive Up/Down instruction (moving/move down instruction namely) and Zoom In instruction (namely amplifying instruction), wherein the Up/Down instruction can be controlled and move on the active window or move down, the Zoom In instruction target that then can " further ", being amplification target, is the instruction that active window is dwindled on the actual effect; Under this initial condition, almost whole former video scene (5,000,000 pixel size) all has been contracted under the 1080P resolution, and this moment, the original pixels details was partially discarded.
When active window value device 3 receives Zoom In instruction, its scaled active window, suppose to be contracted to 2304 * 1296 sizes, this moment, this module can be accepted Up/Down and Left/Right control command simultaneously, the control active window moves freely in 2996 * 2014 scene, until (no longer respond the Right control command when arriving right margin such as active window till arriving a certain border, to guarantee that active window remains in the original resolution magnitude range), this effect such as same see-through window mobile in the former video scene, scene except this see-through window is invisible, but can be by sending Up/Down and Left/Right control command translation window goes to check, be similar to the camera The Cloud Terrace that moves up and down.
When active window is contracted to 2304 * 1296, two field picture scaler 4 is dwindled computing with its pixel, be to compare in 2996 * 1685 o'clock with the active window size parameter, on vision, target sizes in its scene is bigger, that is to say, operates by Zoom In, target in the scene " become large ", and this also effect after the real PTZ cradle head control operation just.
When active window value device 3 continues to receive Zoom In instruction, make active window size just in time be contracted to the 1080P size, two field picture scaler 4 need not to do any zoom operations again at this moment, because active window size and output video resolution sizes are on all four, its pixel be 1:1 fully one to one.
Suppose that active window value device 3 continues to receive Zoom In instruction, make active window size be contracted to 960 * 540 sizes, need to do amplifieroperation this moment, the pixel length and width in the active window scope respectively put be twice, and becomes the output of 1080P resolution.This moment is from visually checking output video, and the target sizes in the sensation scene respectively increases than the target sizes length and width in the original video scene and is twice, and this effect is similar to " digital zoom " technology produce an effect that uses in the digital camera fully.
At any time, active window value device 3 also can receive Zoom Out operational order, with the difference of foregoing description only be that the size parameter of active window is changed from small to big.
The variation issue of output resolution ratio parameter is discussed again.When the output resolution ratio parameter reconfigures (as changing the output of 720P resolution into), only need this parameter is passed to two field picture scaler 4 and video encoder 5, be used for changing the resolution of Video coding output, again this parameter is passed to simultaneously active window value device 3, original active window size parameter is carried out suitable adjustment (because must guarantee that the length-width ratio in the active window parameter must be consistent with output resolution ratio parameter length-width ratio) get final product.Other calculation mechanism does not change fully.
Active window value device 3 receives and according to position and the size information of described active window, extracts graph data and the output of described active window corresponding region from described high-definition digital video stream two field picture;
Outputting video streams resolution getter 8, the resolution sizes and the output that are used for obtaining outputting video streams, the resolution of outputting video streams described in present embodiment getter 8 can be the input units such as keyboard, is used for inputting the resolution of conceivable outputting video streams;
Two field picture scaler 4, Leonardo da Vinci's series 8168 chips of producing take TI company in the present embodiment are as example, image in the active window is carried out convergent-divergent according to the resolution sizes of outputting video streams, obtain meeting frame image sequence and the output of described outputting video streams resolution sizes;
Video encoder 5, the model of producing take Fujitsu in the present embodiment as the chip of MB86H50/51 as example, receive described frame image sequence and processings of encoding, the video code flow after obtaining encoding is also exported;
Display 6 is used for receiving described video code flow and demonstration.
Below by describing the effect that the utility model above-described embodiment brings with existing display packing comparison.
Take the high-definition camera of A, B, C, D four tunnel 5,000,000 pixels and four 2 * 2 display screens as example, the resolution of each piece display screen is 1080P, if need to show screen display four road high-definition camera videos at four, have kinds of schemes to select, wherein scheme one and scheme two are displaying scheme of the prior art:
Scheme one is for all to be contracted to 1080P resolution with each road video, shows at four display screens simultaneously respectively, and the target in this moment each road video all shows smaller, and details has been not easy to see clearly.
Scheme two for not show one road video (such as video A) with not dwindling, need to take simultaneously four display screens this moment, its excess-three road (B, C, D) video can't show, because show that resource is taken by video A, but this moment is interested for the user only to be the target in the zone, the lower right corner of video A, also namely in four display screens only one in the lower right corner paid close attention to by the user, upper left, lower-left and upper right three screens are taken in vain in order not dwindle display video A.
Three of schemes are all used method described in the utility model to four road HD videos, it is respectively the active window zone of separately video with interested region division, should be presented on the display screen without intercepting in the zone with dwindling, four display screens can show four active window zones of four road HD videos simultaneously, and the target in the target in the display video and the former video scene can be in full accord, do not add any dwindling, under specific demand, can also use even Zoom In operation to amplify and show, make target detail more clear.
The electronics PTZ method based on 1 monitoring of high-definition digital camera as said apparatus is realized referring to shown in Figure 2, specifically comprises the steps:
S01 obtains high-definition digital video stream and output;
S02, described high-definition digital video stream decoded obtains high-definition digital video stream two field picture and output;
S03, position and size information and the output of obtaining active window, wherein, the resolution of the two field picture part of described active window delineation is less than or equal to the video resolution of the high-definition digital camera 1 of input; And described active window is rectangle, and the columns of the length-width ratio of described active window and the resolution of outputting video streams and line number are than identical;
S04 according to position and the size information of described active window, extracts graph data and the output of described active window corresponding region from described high-definition digital video stream two field picture;
S05, resolution sizes and the output of obtaining outputting video streams;
S06 carries out convergent-divergent according to the outputting video streams resolution sizes to image corresponding to active window and processes, and obtains to meet the frame image sequence of outputting video streams resolution sizes;
S07, the frame image sequence that will meet the outputting video streams resolution sizes processing of encoding, output video code stream;
S08: receive described video code flow and demonstration.
By above analysis as can be known, method and apparatus of the present utility model applies to the method for PTZ agreement control mechanical underprop in the tradition in the image processing, as long as the image that obtains enough greatly and resolution abundant, just can guarantee to obtain the large scene video signal flow, can select simultaneously the predetermined little scene in the large scene image, and be amplified to predetermined resolution and show, guarantee that little scene is undistorted, by this high-definition digital image information of obtaining is carried out can obtaining simultaneously large scene or the little scene in arbitrary moment based on the vedio data calculation process under the PTZ control.
PTZ agreement in the utility model comprises Pelco-P agreement, Pelco-D agreement and other general PTZ agreements, and so-called other general PTZ agreement refers to agreement or the similar agreement of the PTZ that can realize except Pelco-P agreement and Pelco-D agreement.
Obviously, above-described embodiment only is for example clearly is described, and is not the restriction to execution mode.This execution mode both can carry out the mode that data process based on common computer to be realized, also can carry out the mode that data process based on DSP or other embedded platforms realizes, both can be fully finish enforcement with the form of the software algorithm processing module of data operation, also can finish enforcement with the chip that can finish this data operation processing links or hardware device.In a word, for those of ordinary skill in the field, can also make other changes in different forms to reach on the basis of the above description the purpose of enforcement.Here need not also can't give all execution modes exhaustive.And the apparent variation of being extended out thus or change still are among the protection range of the present utility model.
Claims (5)
1. the electronics PTZ device based on the high-definition digital camera head monitor is characterized in that, comprising:
The high-definition digital camera, the high-definition digital video stream and the output that are used for obtaining predetermined space;
The high-definition digital decoder receives described high-definition digital video stream and decodes and obtains high-definition digital video stream two field picture and output;
The active window locator, the position and size information and the output that are used for obtaining active window, wherein, the resolution of the two field picture part of described active window delineation is less than or equal to the video resolution of the high-definition digital camera of input;
Active window value device receives and according to position and the size information of described active window, extracts graph data and the output of described active window corresponding region from described high-definition digital video stream two field picture;
Outputting video streams resolution getter, the resolution sizes and the output that are used for obtaining outputting video streams;
The two field picture scaler is carried out convergent-divergent to the image in the active window according to the resolution sizes of outputting video streams, obtains meeting frame image sequence and the output of video flowing resolution sizes;
Video encoder receives described frame image sequence and the processing of encoding, the video code flow after obtaining encoding and output.
2. device according to claim 1, it is characterized in that: the resolution of described outputting video streams equals the resolution of viewing area.
3. device according to claim 2, it is characterized in that: the resolution of viewing area equals the resolution of display itself.
4. arbitrary described device according to claim 1-3, it is characterized in that: described active window is rectangle, and the columns of the length-width ratio of described active window and the resolution of outputting video streams and line number are than identical.
5. device according to claim 4 is characterized in that: also comprise a display that is used for receiving and showing described video code flow.
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| CN 201220428949 CN202818497U (en) | 2012-08-27 | 2012-08-27 | Electronic PTZ device capable of monitoring based on high-definition digital camera |
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| CN 201220428949 CN202818497U (en) | 2012-08-27 | 2012-08-27 | Electronic PTZ device capable of monitoring based on high-definition digital camera |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801963A (en) * | 2012-08-27 | 2012-11-28 | 北京尚易德科技有限公司 | Electronic PTZ method and device based on high-definition digital camera monitoring |
| CN103747210A (en) * | 2013-12-31 | 2014-04-23 | 深圳市佳信捷技术股份有限公司 | Method and device for data processing of video monitoring system |
| CN111259762A (en) * | 2020-01-13 | 2020-06-09 | 西南交通大学 | Pantograph abnormity detection method |
-
2012
- 2012-08-27 CN CN 201220428949 patent/CN202818497U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801963A (en) * | 2012-08-27 | 2012-11-28 | 北京尚易德科技有限公司 | Electronic PTZ method and device based on high-definition digital camera monitoring |
| CN102801963B (en) * | 2012-08-27 | 2015-03-11 | 北京尚易德科技有限公司 | Electronic PTZ method and device based on high-definition digital camera monitoring |
| CN103747210A (en) * | 2013-12-31 | 2014-04-23 | 深圳市佳信捷技术股份有限公司 | Method and device for data processing of video monitoring system |
| CN111259762A (en) * | 2020-01-13 | 2020-06-09 | 西南交通大学 | Pantograph abnormity detection method |
| CN111259762B (en) * | 2020-01-13 | 2022-03-29 | 西南交通大学 | Pantograph abnormity detection method |
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