CN205356576U - Camera acquisition device is used in public security control - Google Patents
Camera acquisition device is used in public security control Download PDFInfo
- Publication number
- CN205356576U CN205356576U CN201620041275.4U CN201620041275U CN205356576U CN 205356576 U CN205356576 U CN 205356576U CN 201620041275 U CN201620041275 U CN 201620041275U CN 205356576 U CN205356576 U CN 205356576U
- Authority
- CN
- China
- Prior art keywords
- video
- circuit
- coding chip
- video coding
- photographic head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Closed-Circuit Television Systems (AREA)
Abstract
The utility model discloses a camera acquisition device is used in public security control, including the camera, the output of camera is connected to FPGA circuit input end able to programme for handle the signal, FPGA circuit output able to programme is connected video coding chip and is used for sending behind the video information compressing to the rear end network. Whole collection system structure is nimble, and reasonable in design has not only remain fine definition, has significantly reduced moreover to detect the data volume of calculating, has kept original smoothness nature, and enough homing actions and behavior information neither need big transmission bandwidth, also do not need the large capacity to save, the surveillance video that provides the high value simultaneously, greatly reduced to transmission network and disk memory's requirement.
Description
[technical field]
This utility model belongs to social security video monitoring system technical field, is specifically related to a kind of security monitoring shooting harvester.
[background technology]
Safe city project is a very strong management system super-huge, comprehensive, it is effectively improved the control ability to municipal public safety, promote the reply management level of Urban Emergency, extrude crime time and the space of offender to greatest extent, reduce incidence of cases, improve social security environment, improve the security of the people.The main part of safe city project is video monitoring system, and substantial amounts of security monitoring photographic head is to provide important support for fighting crime.At present, although the image of front end public security photographic head can gather the video information of fine definition, but after go-between transmits, image quality reduces, and can not meet the requirement of cracking of cases, but afterwards during video recording verification most headache be can only see not see Chu, say nothing of minutia.
In order to improve the application level in Video Analysis Technology feelings analytical work on record, need the deficiency overcoming value of low quality, actual of recording a video limited, obtain the picture quality of high-resolution, thus allowing video monitoring play substantial worth in the application of public security system, front end adopts the photographic head of high-resolution to carry out video acquisition, for go-between transmission bandwidth, and the capacity of rear end video storage all proposes significantly high requirement.The high definition public security photographic head of such as 720p at least needs the bandwidth of 2Mbps could gather the image that transmission 30 frames are per second, and the photographic head of 1080p then at least needs the bandwidth of 4Mbps.If connecting up to a hundred photographic head, then need very big transmission bandwidth.Need the video disk space just taking hundreds of Mbytes per second of storage in rear end, the video preserving 15 days will take the disk of thousands of T.Therefore, when the network bandwidth and limited storage space, existing technology can not play the real effect of high-resolution photographic head.
[summary of the invention]
Technical problem to be solved in the utility model is in that for above-mentioned deficiency of the prior art, it is provided that one had both been provided that video image clearly, adapts to again the security monitoring shooting harvester of existing finite bandwidth and storage.
This utility model is by the following technical solutions:
A kind of security monitoring shooting harvester, it is characterized in that: include photographic head, the outfan of photographic head is connected to FPGA programmable circuit input, for signal is processed, FPGA programmable circuit outfan connects video coding chip for sending to back-end network after video information compression being processed.
Further, FPGA programmable circuit includes dropping frame per second circuit and the output of down-sampling circuit two-way, the outfan of photographic head respectively with frame per second circuit drops and down-sampling circuit input end is connected.
Further, after dropping the output of frame per second circuit, connect the first video coding chip, after the output of down-sampling circuit, connect the second video coding chip.
Further, FPGA programmable circuit adopts EP2C35F67246.
Further, video coding chip adopts SAA7105 coding chip.
Compared with prior art, this utility model at least has the advantages that flexible structure, reasonable in design.Not only remain fine definition, and greatly reduce the data volume that detection calculates.Maintain original fluency, enough homing actions and behavioural information, both do not need big transmission bandwidth, it is not required that Large Copacity stores, the monitor video of high value is provided while, greatly reduce the requirement to transmission network and disk storage.
[accompanying drawing explanation]
Fig. 1 is system architecture diagram of the present utility model；
Fig. 2 is a kind of circuit theory diagrams being embodied as of the present utility model.
Wherein: 1. photographic head；2. frame per second circuit drops；3. down-sampling circuit；4. the first video coding chip；5. the second video coding chip.
[detailed description of the invention]
Refer to shown in Fig. 1 and Fig. 2, the utility model discloses a kind of security monitoring shooting harvester, including security monitoring photographic head 1, photographic head 1 selects Ov9620 digital image sensor chip, this chip uses 24MHz crystal oscillator, support 1280*1024 resolution, it is provided that the video of 15 frames per second.The outfan of photographic head 1 is connected to FPGA programmable circuit input, and for signal carries out digital-to-analogue conversion process, FPGA programmable circuit outfan connects video coding chip for sending to back-end network after video information compression being processed.
FPGA programmable circuit uses EP2C35F67246 model, including dropping frame per second circuit 2 and down-sampling circuit 3, SAA7105 video coding chip includes the first video coding chip 4 and the second video coding chip 5.
The frame per second that drops that photographic head 1 outfan is simultaneously connected with within FPGA programmable circuit processes circuit 2 and the input of down-sampling process circuit 3；The outfan dropping frame per second process circuit 2 connects the first video coding chip 4 input；Down-sampling processes the outfan of circuit 3 and connects the second video coding chip 5 input.Photographic head output monitoring video divides two-way to process simultaneously, and wherein the first via extracts a frame picture every some frames and carries out dropping frame per second and process, and the second tunnel carries out the down-sampling of resolution decreasing and processes simultaneously.This two-path video signal is encoded processing respectively through the first and second video coding chips again: the monitor video dropping the output of frame per second processing of circuit according to the original resolution of video head and is encoded by the first via far below normal frame per second；The monitor video that down-sampling processes output is encoded by the second tunnel according to lower than photographic head original resolution and normal frame rate, a low frame-rate video of road high-resolution and a road low resolution normal frame rate video is formed respectively after encoded, retransmit to back-end network, it is effectively saved resource occupying rate, by the high-resolution maintaining video pictures, save the memory space of terminal.
Concrete, FPGA programmable circuit can realize dropping frame per second circuit and down-sampling circuit simultaneously, and the dynamic menu of 1280*1024 pixel resolution 15 frames per second that photographic head Ov9620 chip is exported by point two-way is respectively processed.Wherein the first via carries out dropping frame per second process according to 1280*1024 pixel resolution 1 frame per second, and bandwidth only has about the 1/15 of original video；Second road down-sampling forms 320*256 pixel resolution 15 frame videos per second after processing, and bandwidth only has about the 1/16 of original video.Two-path video after process is delivered to respective SAA7105 coding chip respectively and is carried out Video coding.
A kind of security monitoring shooting harvester of this utility model offer, flexible structure, reasonable in design.Not only remain fine definition, and greatly reduce the data volume that detection calculates.Maintain original fluency, enough homing actions and behavioural information.The video of the low frame per second of high-resolution can provide details characteristic information clearly, and the video of low resolution normal frame rate can provide behavioural information.The output of this two-way is combined, make security monitoring center on limited transmission bandwidth and memory space basis, the feature picture of high-resolution and fine definition can be obtained, the behavior video of smoothness can be obtained again, both big transmission bandwidth had not been needed, store also without Large Copacity, the monitor video of high value is provided while, greatly reduce the requirement to transmission network and disk storage.
Claims (4)
1. a security monitoring shooting harvester, it is characterized in that: include photographic head (1), the outfan of described photographic head (1) is connected to FPGA programmable circuit input, described FPGA programmable circuit outfan is connected to video coding chip, described video coding chip is for sending video information to back-end network, described FPGA programmable circuit includes dropping frame per second circuit (2) and the output of down-sampling circuit (3) two-way, the outfan of described photographic head (1) drops frame per second circuit (2) with described respectively and described down-sampling circuit (3) input is connected.
2. a kind of security monitoring shooting harvester according to claim 1, it is characterized in that: described in drop frame per second circuit (2) output after connect the first video coding chip (4), described down-sampling circuit (3) output after connect the second video coding chip (5).
3. a kind of security monitoring shooting harvester according to claim 1, it is characterised in that: described FPGA programmable circuit adopts EP2C35F67246.
4. a kind of security monitoring shooting harvester according to claim 1, it is characterised in that: described video coding chip adopts SAA7105 coding chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620041275.4U CN205356576U (en) | 2016-01-15 | 2016-01-15 | Camera acquisition device is used in public security control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620041275.4U CN205356576U (en) | 2016-01-15 | 2016-01-15 | Camera acquisition device is used in public security control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205356576U true CN205356576U (en) | 2016-06-29 |
Family
ID=56176184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620041275.4U Active CN205356576U (en) | 2016-01-15 | 2016-01-15 | Camera acquisition device is used in public security control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205356576U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107018367A (en) * | 2017-04-11 | 2017-08-04 | 深圳市粮食集团有限公司 | A kind of method and system for implementing grain monitoring |
| CN113409533A (en) * | 2021-05-08 | 2021-09-17 | 国网浙江省电力有限公司丽水供电公司 | Image picture intelligent pushing system and method based on alarm information |
-
2016
- 2016-01-15 CN CN201620041275.4U patent/CN205356576U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107018367A (en) * | 2017-04-11 | 2017-08-04 | 深圳市粮食集团有限公司 | A kind of method and system for implementing grain monitoring |
| CN113409533A (en) * | 2021-05-08 | 2021-09-17 | 国网浙江省电力有限公司丽水供电公司 | Image picture intelligent pushing system and method based on alarm information |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20180068540A1 (en) | Image processing method | |
| US9489387B2 (en) | Storage management of data streamed from a video source device | |
| US9307217B1 (en) | Portable video camera/recorder having video security feature | |
| CN103634552A (en) | Monitoring video storage method, system and central management server | |
| CN203416351U (en) | A power station workshop video monitoring system | |
| CN102905101A (en) | Video recording apparatus, video recording system and video recording method | |
| CN108769576B (en) | Intelligent video processing method and system | |
| WO2019136995A1 (en) | Surveillance video data processing method and apparatus for battery charging and swapping station | |
| KR20180078149A (en) | Method and system for playing back recorded video | |
| CN105979189A (en) | Video signal processing and storing method and video signal processing and storing system | |
| CN103780870A (en) | Video image quality diagnosis system and method thereof | |
| CN205356576U (en) | Camera acquisition device is used in public security control | |
| CN108174119B (en) | Control method of image pickup device, multispectral image pickup apparatus, unmanned aerial vehicle, and computer-readable storage medium | |
| CA3015189A1 (en) | Systems and methods for transmitting a high quality video image from a low power sensor | |
| CN105471958A (en) | Data processing system and method of internet of things | |
| CN111131786A (en) | Video monitoring storage system applying cloud storage | |
| CN107040741A (en) | A kind of vehicle intelligent camera | |
| CN101557487B (en) | Hard disk recorder with human face image capturing function and method for capturing a human face image | |
| CN203482319U (en) | Video monitoring and analysis system for power station workshops | |
| CN201303397Y (en) | High definition digital video server terminal | |
| TWI680668B (en) | Screen image transmission method, image restoration method, screen image transmission system, image restoration system, screen image transmission program, image restoration program, image compression method, image compression system, and image compression program | |
| CN101437157B (en) | Multipath CDMA video transmission system for monitoring railway field video | |
| CN102833511A (en) | Method and device for storing high-definition videos based on serial digital interface (SDI) | |
| CN104902238A (en) | Intelligent video analysis server | |
| CN101971620A (en) | A method of recording quality images |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |