CN103645594A - Multispectral infrared surveillance camera supplementary lighting method - Google Patents
Multispectral infrared surveillance camera supplementary lighting method Download PDFInfo
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- CN103645594A CN103645594A CN201310331831.2A CN201310331831A CN103645594A CN 103645594 A CN103645594 A CN 103645594A CN 201310331831 A CN201310331831 A CN 201310331831A CN 103645594 A CN103645594 A CN 103645594A
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Abstract
The invention relates to the field of surveillance cameras. A multispectral infrared surveillance camera supplementary lighting method is disclosed. The camera is provided with a high-definition CMOS module. An auxiliary light source adopts a special multiband design. The light source emission spectrum band selection and the peak value selection are based on the basis of infrared band reflectance spectroscopy analysis of different objects, and at the same time, the condition that the transmittance curve and the dispersion of the lens change at different wavelengths and the condition that an image sensor module having high quantum responsive efficiency to the infrared band is adopted are taken into account. Thus, existing night vision cameras can be greatly improved.
Description
Technical field
The present invention relates to CCTV camera technical field.
Background technology
At present in imaging technique, be mainly divided into two large classes, a class is that to utilize visible ray (wavelength 380 to 780 nanometers) another kind of be to utilize non-visible light (infrared or ultraviolet) imaging.
Wherein visible ray technology is improved ripe the most.The most of imaging device touching in daily life, as the video camera video recorder of modal portable etc., substantially upper what adopt is visual light imaging, these products all can obtain the good coloured image of color rendition at present.
But not visual light imaging research is often infrared band imaging technique, the thermal imaging system that utilizes object self heat radiation imaging that the representative in infrared imaging field is had to.Zong but institute is known, be exactly the shortcoming image frame depth of field of thermal imaging disappearance, the bright degree of image just depends on the temperature of object.The real scene that the image of thermal imaging system acquisition can not reflect reality in life practically.
The rise in video security monitoring field in recent years, the continuous expansion of the day and night type video camera market demand, and the technical bottleneck of the night vision device of thermal imaging simultaneously is not well solved.Under these circumstances, the Corporation R & D strength that the research of night vision technology is relevant has especially turned to the research of another night vision technology one after another, and that is exactly the research and development with the active night viewing camera of infrared auxiliary light source.Emerging of active night viewing camera is the night observation device of new generation of having integrated up-to-date infrared light supply technology (powerful infrared LED chip production, encapsulation technology), broadband lens design technology and low-light (level) CCD, CMOS integrated technology.
The research and development success of active night viewing camera, has promoted the development of security protection video night vision technology greatly, and the application of night vision technology has been moved towards general masses' sieve daily life from the application of special industry.The release of active night viewing camera is successfully, but is not perfectly, one of them shortcoming be clearly exactly night vision picture can only be black and white screen, and there is the situations such as the whole picture of GTG distortion turns white.Analyze after deliberation, causing these not enough one of the main reasons is that current secondary light source emission spectrum wave band is narrow, and only has a peak value.Single band imaging unavoidably causes picture greyscale resolution to decline.
Summary of the invention
The present invention is at least one defect overcoming described in above-mentioned prior art, and the light compensation method of multispectral infrared monitoring camera is provided, and can greatly promote existing night viewing camera.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
The light compensation method of multispectral infrared monitoring camera is provided, the light compensation method of described CCTV camera: the auxiliary infrared light supply of mounting design multiband on camera head, at camera lens, adopt simultaneously the high definition camera lens of visible ray and infrared light thoroughly, on video camera, be designed with optical filter box, on video camera, be designed with high definition CMOS module, secondary light source has adopted special multiband design, the selected different objects that is based upon of the selected and peak value of source emissioning light spectrum wave band is on section Analysis of Reflective Spectrum basis, infrared slope, taken into account lens wearer in transmittance curve and the dispersion variation of different wave length simultaneously and adopted imageing sensor module infrared band to high quantum response efficiency.
A possibility, described camera lens adopts simultaneously the day and night type high definition camera lens of visible ray and infrared light thoroughly.
Compared with prior art, the invention has the beneficial effects as follows:
Compared with prior art, advantage of the present invention is apparent.For existing active night viewing camera imaging picture, turn white, the deficiency that GTG resolution characteristic is low, by the research to light spectrum image-forming and colour vision effect, develop the infrared auxiliary light source with multispectral light filling effect, be equipped with proprietary camera lens, optical filtering and image sensor design.Final design goes out multispectral infrared light filling camera system.Make up the deficiency of existing product, greatly promoted the night vision pattern picture GTG resolution characteristic of night vision camera product.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated.
Embodiment 1
The light compensation method of multispectral infrared monitoring camera is provided, the light compensation method of described CCTV camera: the auxiliary infrared light supply of mounting design multiband on camera head, at camera lens, adopt simultaneously the high definition camera lens of visible ray and infrared light thoroughly, on video camera, be designed with optical filter box, on video camera, be designed with high definition CMOS module, secondary light source has adopted special multiband design, the selected different objects that is based upon of the selected and peak value of source emissioning light spectrum wave band is on section Analysis of Reflective Spectrum basis, infrared slope, taken into account lens wearer in transmittance curve and the dispersion variation of different wave length simultaneously and adopted imageing sensor module infrared band to high quantum response efficiency.Camera lens adopts simultaneously the day and night type high definition camera lens of visible ray and infrared light thoroughly.
The camera head that this technology is core of take mainly comprises: 1, the auxiliary infrared light supply 2 of multiband, be applicable to day and night type high definition camera lens 3, optical filter box 4, the high definition CMOS module of visible ray and infrared light simultaneously, it is characterized in that: secondary light source has adopted special multiband output design, and the selected different objects that is based upon of the selected and peak value of source emissioning light spectrum wave band is on infrared band Analysis of Reflective Spectrum basis.Taken into account lens wearer in transmittance curve and the dispersion variation of different wave length simultaneously and adopted imageing sensor module design infrared band to high quantum response efficiency.
Described method comprises:
1, have a plurality of emission spectrum in other words the wavestrip of emission spectrum there is the secondary light source of a plurality of peak values as the technology of the secondary light source of night vision camera system;
2, camera system lens possesses the ability of infrared and visible ray, has guaranteed no matter imageing sensor is operated in visible light wave range and is still operated in infrared band and all has enough luminous fluxes.
3, image sensor module belongs to the requirement that service band meets visible ray and infrared two wave bands simultaneously.
Adopted the infrared light supply module of exclusive wave band distribution design technology as the secondary light source of active night viewing camera, be equipped with the camera lens of day and night type simultaneously and at infrared band, there is the introducing of the image sensing module of superelevation responsiveness, can effectively improve image resolution ratio and the contrast of video camera night vision imaging, improve the accurately fixed and efficiency that target identification and scene are understood.The present invention can be widely used in the monitoring of national grid image, safe city picture control and amusement, the various civilian video monitoring system such as food and drink.
Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all embodiments.All any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in the protection domain of the claims in the present invention.
Claims (2)
1. the light compensation method of multispectral infrared monitoring camera, it is characterized in that, the light compensation method of described CCTV camera: the auxiliary infrared light supply of mounting design multiband on camera head, at camera lens, adopt simultaneously the high definition camera lens of visible ray and infrared light thoroughly, on video camera, be designed with optical filter box, on video camera, be designed with high definition CMOS module, secondary light source has adopted special multiband design, the selected different objects that is based upon of the selected and peak value of source emissioning light spectrum wave band is on section Analysis of Reflective Spectrum basis, infrared slope, taken into account lens wearer in transmittance curve and the dispersion variation of different wave length simultaneously and adopted imageing sensor module infrared band to high quantum response efficiency.
2. the light compensation method of multispectral infrared monitoring camera according to claim 1, is characterized in that, described camera lens adopts simultaneously the day and night type high definition camera lens of visible ray and infrared light thoroughly.
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| CN201310331831.2A CN103645594A (en) | 2013-08-01 | 2013-08-01 | Multispectral infrared surveillance camera supplementary lighting method |
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| CN201310331831.2A CN103645594A (en) | 2013-08-01 | 2013-08-01 | Multispectral infrared surveillance camera supplementary lighting method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105868753A (en) * | 2016-04-05 | 2016-08-17 | 浙江宇视科技有限公司 | Color identification method and apparatus of blue license plate |
| CN108225277A (en) * | 2018-03-09 | 2018-06-29 | 深圳臻迪信息技术有限公司 | Image acquiring method, vision positioning method, device, the unmanned plane of unmanned plane |
| CN110445990A (en) * | 2019-08-13 | 2019-11-12 | 浙江大华技术股份有限公司 | A kind of light compensating apparatus and camera system |
| 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 |
-
2013
- 2013-08-01 CN CN201310331831.2A patent/CN103645594A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105868753A (en) * | 2016-04-05 | 2016-08-17 | 浙江宇视科技有限公司 | Color identification method and apparatus of blue license plate |
| CN105868753B (en) * | 2016-04-05 | 2019-10-18 | 浙江宇视科技有限公司 | The recognition methods of blue license plate color and device |
| CN108225277A (en) * | 2018-03-09 | 2018-06-29 | 深圳臻迪信息技术有限公司 | Image acquiring method, vision positioning method, device, the unmanned plane of unmanned plane |
| CN110445990A (en) * | 2019-08-13 | 2019-11-12 | 浙江大华技术股份有限公司 | A kind of light compensating apparatus and camera system |
| CN110445990B (en) * | 2019-08-13 | 2022-06-21 | 浙江大华技术股份有限公司 | Light filling device and shooting system |
| 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 |
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Application publication date: 20140319 |