CN202887451U - Infrared light and visible light filling blended electronic police system - Google Patents
Infrared light and visible light filling blended electronic police system Download PDFInfo
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- CN202887451U CN202887451U CN201220554356.6U CN201220554356U CN202887451U CN 202887451 U CN202887451 U CN 202887451U CN 201220554356 U CN201220554356 U CN 201220554356U CN 202887451 U CN202887451 U CN 202887451U
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Abstract
The utility model discloses an infrared light and visible light filling blended electronic police system. The infrared light and visible light filling blended electronic police system comprises an image light filling unit, an image acquisition and data analysis unit, a data transmission unit and a central management unit, wherein the image light filling unit is an infrared light and visible light blended fill light which comprises an LED (Light Emitting Diode) lamp bead module, a stepper motor adjustment module, an intelligent control module and an illumination sensor, wherein the intelligent control module is used for collecting ambient brightness through the illumination sensor and controlling the working state of the LED lamp bead module, and the intelligent control module is communicated with the image acquisition and data analysis unit and is used for adjusting the shape of light spots formed by the LED lamp bead module through the stepper motor adjustment module. The infrared light and visible light filling blended electronic police system has the advantages of being capable of eliminating influences caused by excessive brightness of an LED lamp and the phenomenon of color cast caused by infrared light filling, greatly improving the overall quality of night images at a color pattern of a camera and effectively ensuring the identification rate of license plates.
Description
Technical field
The utility model relates to a kind of intelligent transport technology field, specifically, relates to a kind of infrared and electronic police system visible light light filling of adopting.
Background technology
Electronic police system is in the application of reality, because the ambient light at night is very undesirable, picture quality is often relatively poor, does not basically see car plate, let alone identifies the number-plate number, color and carry out corresponding illegal discriminatory analysis.The application of light compensating lamp has exactly solved this problem.At intelligent transportation field, the Main Function of LED light compensating lamp carries out light filling to car plate exactly.The application of light filling technology has promoted the car plate discrimination at night of electronic police system greatly.
In the electronic police light filling at night of reality was used, too low stop line, the illegal environment of then not seeing of brightness caused image to be not easy identification.In order to see more details clearly, people's face for example, lane line etc., this just requires to improve the brightness of LED light compensating lamp, however the raising of brightness will cause a series of contradiction: in the situation that the too high car plate of brightness easily exposes; Too high brightness meeting exerts an influence to the driver; High brightness brings more heat, affects the life-span of lamp.
Although at present infrared illumination technology development is than very fast, but fail at home electronic police field widespread use, main reason be exactly domestic car plate be the car plate of many colors, car plate identification also requires the identification to the car plate color simultaneously, this just requires the night capture machine can not use white-black pattern, but the application of color mode is again so that the picture of capturing has significantly partially redness, or even significantly red quick-fried, and this can directly affect car plate discrimination at night.
The utility model content
The utility model provides a kind of and has adopted infrared and the electronic police system visible light light filling, has solved the low technical matters of car plate discrimination at night.
In order to solve the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind ofly merge the infrared and electronic police system visible light light filling, comprise image light filling unit, image acquisition and data analysis unit, data transmission unit and central manage-ment unit, described image light filling unit is infrared light and visible light mixed type light compensating lamp, and described light compensating lamp comprises LED lamp pearl module, stepper motor adjustment module, intelligent control module and illuminance transducer; Wherein, intelligent control module gathers ambient brightness by illuminance transducer, the duty of control LED lamp pearl module, described intelligent control module and image acquisition and data analysis unit communication, intelligent control module is regulated the hot spot form that LED lamp pearl module forms by the stepper motor adjustment module.
Red quick-fried in order to reduce, make the profile of object scene and svelteness as seen, it is the infrared LED light source of 750-850nm that the infrared LED light source of described LED lamp pearl module adopts wavelength.
Preferably, described LED lamp pearl module is array white LED light source and infrared LED light source.
Further, described image acquisition and data analysis unit comprise intelligent high-definition video camera, described intelligent high-definition video camera comprises the power module of optical filter handover module, imageing sensor, image processing module, image analysis module, system management module and power supply, image after the optical filter of described imageing sensor collection optical filter handover module filters carries out transferring to image analysis module and system management module after colour cast is proofreaied and correct to gathering image by image processing module.
Obtain more satisfactory picture quality in order to make it high definition camera, with camera at night with use respectively different optical filter work daytime, the optical filter in the described optical filter handover module comprises cutoff filter and bandpass filter.
Preferably, described bandpass filter is the infrared light of 750-850nm and the optical filter that white light passes through for allowing wavelength.
Preferably, described image acquisition collection and data analysis unit also comprise high definition camera lens and protective cover.
Preferably, described data transmission unit comprises switch and fiber optical transceiver.
Compared with prior art, advantage of the present utility model and good effect are: electronic police system of the present utility model can be controlled light compensating lamp easily, and the built-in illumination photoreceptor of mixed type light compensating lamp is according to the true illumination of illumination condition analysis, automatic control switch is regulated the brightness of lamp automatically.Make the profile of target and svelteness as seen with the sightless infrared light light source of human eye; Make the colourity of target can identification with appropriate pure white light source, mix suitable optical filter for the imageing sensor of video camera, make whole imaging effect reach best.Both can solve the impact that the LED lamp is crossed bright generation, and can solve again the infrared lamp light filling and colour cast, red quick-fried phenomenon occur, the night picture total quality of camera under color mode has greatly improved, and effectively guaranteed the car plate discrimination.Infrared function is improved the performance of video camera so that video camera light is evenly distributed, and makes it produce better image effect at night in scene.Simultaneously, can avoid the too strong illumination of outdoor illumination equipment such as X-flash, Halogen lamp LED to disturb driver's vision at night.The mixed type light compensating lamp is to the sense of human eye flicker free, and light is soft, not dazzling, can not affect driver's vision night, meets the needs of traffic administration, simultaneously the night sky of the cleaning in city also.
After reading by reference to the accompanying drawings the detailed description of the utility model embodiment, other characteristics of the present utility model and advantage will become clearer.
Description of drawings
Fig. 1 is the rig-site utilization schematic diagram of the utility model specific embodiment;
Fig. 2 is the system chart of the utility model specific embodiment;
Fig. 3 is the theory diagram of the light compensating lamp of the utility model specific embodiment image light filling unit;
Fig. 4 is the theory diagram of the utility model specific embodiment image acquisition and data analysis unit;
Fig. 5 is the systemic-function process flow diagram of the utility model specific embodiment.
Embodiment
Existing electronic police system generally adopts following dual mode in order to improve the car plate discrimination:
(1) brightness of raising light compensating lamp, still, the too high car plate that easily causes of light compensating lamp brightness easily exposes; Too high brightness meeting exerts an influence to the driver; High brightness brings more heat, affects the problems such as life-span of lamp.
(2) adopt infrared light compensating lamp, still, the picture that can cause capturing has significantly partially redness, or even significantly red quick-fried, and this can directly affect car plate discrimination at night.
Thereby the utility model has proposed a kind of infrared and electronic police system visible light light filling of merging for the problems referred to above.
Below in conjunction with accompanying drawing embodiment of the present utility model is described in more detail:
Shown in Fig. 1,5, adopt infrared light and visible light mixed type light compensating lamp to carry out light filling, but the profile of display-object scenery and lines, make it to reach clear effect as daytime, in addition in addition faint white light replenishes colourity, makes night scenery color reach the cognizable degree of naked eyes, meets the needs of vehicle supervision department, be equipped with again improved intelligent high-definition video camera optical filter, make video camera can both normally bring into play the effect of its high definition night in daytime.
As shown in Figure 2, fusion is infrared comprises image light filling unit, image acquisition and data analysis unit, data transmission unit and central manage-ment unit with the electronic police system visible light light filling.The below introduces respectively unit:
1, image light filling unit
As shown in Figure 3: image light filling unit mainly comprises: the accessories such as infrared light and visible light mixed type light compensating lamp and universal joint, anchor ear.Wherein, the mixed type light compensating lamp comprises LED lamp pearl module, stepper motor adjustment module, intelligent control module and illuminance transducer.Wherein, intelligent control module gathers ambient brightness by illuminance transducer, the duty of control LED lamp pearl module, intelligent control module and image acquisition and data analysis unit communication, intelligent control module is regulated the hot spot form that LED lamp pearl module forms by the stepper motor adjustment module.
(1) LED lamp pearl module: adopt high-density array type white LED light source and infrared LED light source, luminous intensity is high, and brightness is even, and is not dazzling, clearly sees car plate and wheel clearly wide.The infrared LED light source adopts the infrared light filling of 750nm-850nm wave band, can reduce red quick-friedly, makes the profile of object scene and svelteness as seen; White LED light source is positive white color wick, and low in energy consumption, the life-span is long, decay little, in order to replenish colourity, make night the scenery color and car plate reach the cognizable degree of naked eyes.
(2) stepper motor adjustment module: but the position by stepper motor accurate adjustment lens and light source, and by the remote controlled hot spot form of 485 agreements, the angle of LED Lamp cup is adjustable continuously to 120 degree from 5 degree.Greatly improve the illuminating effect to vehicle.
(3) intelligent control module: mainly adopt single-chip microcomputer as the CPU of control module, realize following functions:
1) pulse of audio video synchronization control function: the electronic shutter of light source luminescent and video camera is synchronous, and only light source just exposes when camera is captured.When reducing light pollution, significantly improve the luminescence efficiency of LED like this, reduced greatly the power consumption of light compensating lamp, promoted the life-span of light compensating lamp.
2) remote control function: parameter that comprises brightness, illumination parameter etc. all can be passed through remotely modifying; Can coordinate with video camera, automatically adjust brightness according to capturing image.
3) for the low frame per second optimizational function of high-definition camera: frequency multiplication output is carried out to input sync signal in inside, reduces flickering; Also can export at ordinary times the long bright light rays of low-light level, providing at high-definition camera provides the pulsing light of one or many high brightness after capturing signal, and reducing stimulates human eye, does not affect traffic safety.
4) AC synchronous output function: can glimmer with AC power phase-locking or phase shift, and the output synchronous control signal does not glimmer the high-definition camera image to high-definition camera with the flicker of street lamp and signal lamp.And can improve red light in the phenomenon of jaundice at night.
(4) illuminance transducer: automatically open illumination when ambient brightness is lower than setting value, there is the anti-dazzle design inside, can not extinguish because of the large light irradiation by vehicle.Also can be set in and also open illumination daytime, improve the effect of taking pictures in the backlight situation.
2, image acquisition and data analysis unit
As shown in Figure 4, image acquisition and data analysis unit mainly comprise: intelligent high definition camera, protective cover, high definition camera lens.The intelligence high definition camera includes optical filter handover module, imageing sensor, image processing module (FPGA), image analysis module (DSP), system management module (ARM), power module.Image after the optical filter of imageing sensor collection optical filter handover module filters carries out transferring to image analysis module and system management module after colour cast is proofreaied and correct to gathering image by image processing module.
(1) optical filter handover module: whether open the switching of control optical filter according to light compensating lamp, thereby make camera obtain more satisfactory picture quality.Can allow camera evening with use respectively different optical filter work daytime: when the light on daytime is abundant, circuit control panel orders about handover module and switches to cutoff filter work, imageing sensor restores true colour, when night during insufficient light, switch to band pass filter, bandpass filter is the infrared light of 750-850nm and the optical filter that white light passes through for allowing wavelength, can respond to infrared lamp and the auxiliary light of white light in evening, make imageing sensor take full advantage of auxiliary light, thereby greatly improved the night performance of video camera, whole picture clear and natural.
(2) imageing sensor: after mixing light filling, imageing sensor collects image and has the colour cast phenomenon, originally be that the sensor that embodiment selects has certain color rendition function, through behind the analog to digital conversion circuit, output RAW data are to image processing module (FPGA).
(3) image processing module (FPGA): adopt the ISP algorithm, can proofread and correct preferably the colour cast problem, the picture after the correction can satisfy the demands such as car plate color identification.
Described colour cast is proofreaied and correct mainly and is realized by following bearing calibration:
1) static white balance: the colour temperature that Different Light shines on the object is different, causes the color of image colour cast, need to proofread and correct by white balance.Employing derives correcting algorithm based on grey world GW and total reflection theoretical algorithm PR, can have preferably colour cast to proofread and correct.
2) color correction: by color matrix to interpolation after the pixel of colour cast proofread and correct.
3) Gamma proofreaies and correct: correcting luminance, correction colour cast.
(4) image analysis module (DSP): have the correlation function of video analysis, the detection of car plate identification, various illegal incidents: detections of making a dash across the red light, compacting line, illegal lane change, not according to functions such as lanes, retrograde, traffic flow, video measurement, video passback, green light train detections.
(5) camera system administration module (ARM); Finish the communication between the whole camera model, the functions such as external interface realization.
(6) power module: provide each circuit of whole camera system used power supply.
3, data transmission unit
Data transmission unit: finish the data interaction of intelligent high-definition video camera and central manage-ment unit, mainly comprise switch, fiber optical transceiver.
4, central manage-ment unit
Central manage-ment unit: comprise central server.
In sum, the utility model has well solved the impact that the LED lamp is crossed bright generation, can solve the phenomenon that colour cast appears in the infrared lamp light filling again, and the night picture total quality of camera under color mode has greatly improved, effectively guaranteed the car plate discrimination.
Certainly; above-mentioned explanation is not to be to restriction of the present utility model; the utility model also is not limited in above-mentioned giving an example, and the variation that those skilled in the art make in essential scope of the present utility model, remodeling, interpolation or replacement also should belong to protection domain of the present utility model.
Claims (8)
1. one kind merges electronic police system infrared and the visible light light filling, comprise image light filling unit, image acquisition and data analysis unit, data transmission unit and central manage-ment unit, it is characterized in that: described image light filling unit is infrared light and visible light mixed type light compensating lamp, and described light compensating lamp comprises LED lamp pearl module, stepper motor adjustment module, intelligent control module and illuminance transducer; Wherein, intelligent control module gathers ambient brightness by illuminance transducer, the duty of control LED lamp pearl module, described intelligent control module and image acquisition and data analysis unit communication, intelligent control module is regulated the hot spot form that LED lamp pearl module forms by the stepper motor adjustment module.
2. the electronic police system of the infrared and visible light light filling of fusion according to claim 1, it is characterized in that: it is the infrared LED light source of 750-850nm that the infrared LED light source of described LED lamp pearl module adopts wavelength.
3. the electronic police system of the infrared and visible light light filling of fusion according to claim 1, it is characterized in that: described LED lamp pearl module is array white LED light source and infrared LED light source.
4. according to claim 1 and 2 or the electronic police system of the infrared and visible light light filling of 3 described fusions, it is characterized in that: described image acquisition and data analysis unit comprise intelligent high-definition video camera, described intelligent high-definition video camera comprises the optical filter handover module, imageing sensor, image processing module, image analysis module, the power module of system management module and power supply, image after the optical filter of described imageing sensor collection optical filter handover module filters carries out transferring to image analysis module and system management module after colour cast is proofreaied and correct to gathering image by image processing module.
5. the electronic police system of the infrared and visible light light filling of fusion according to claim 4, it is characterized in that: the optical filter in the described optical filter handover module comprises cutoff filter and bandpass filter.
6. the electronic police system of the infrared and visible light light filling of fusion according to claim 5, it is characterized in that: described bandpass filter is the infrared light of 750-850nm and the optical filter that white light passes through for allowing wavelength.
7. according to claim 5 or the electronic police system of the infrared and visible light light filling of 6 described fusions, it is characterized in that: described image acquisition and data analysis unit also comprise high definition camera lens and protective cover.
8. the electronic police system of the infrared and visible light light filling of fusion according to claim 1, it is characterized in that: described data transmission unit comprises switch and fiber optical transceiver.
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| CN111147771A (en) * | 2019-12-30 | 2020-05-12 | 安徽惠洲地质安全研究院股份有限公司 | Mining imaging device, equipment and method |
| CN111147771B (en) * | 2019-12-30 | 2022-05-03 | 安徽惠洲地质安全研究院股份有限公司 | Mining imaging device, equipment and method |
| CN114584714B (en) * | 2022-05-06 | 2022-08-05 | 深圳市三千米光电科技有限公司 | Intelligent control system of infrared laser light supplementing lamp for smart city |
| CN114584714A (en) * | 2022-05-06 | 2022-06-03 | 深圳市三千米光电科技有限公司 | Intelligent control system of infrared laser light supplementing lamp for smart city |
| CN116761050A (en) * | 2023-08-14 | 2023-09-15 | 合肥航谱时代科技有限公司 | Image acquisition system based on visible light and infrared fusion |
| CN116761050B (en) * | 2023-08-14 | 2023-11-03 | 合肥航谱时代科技有限公司 | Image acquisition system based on visible light and infrared fusion |
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