CN108200353A - A kind of security monitoring camera environment light detection method - Google Patents
A kind of security monitoring camera environment light detection method Download PDFInfo
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- CN108200353A CN108200353A CN201810146812.5A CN201810146812A CN108200353A CN 108200353 A CN108200353 A CN 108200353A CN 201810146812 A CN201810146812 A CN 201810146812A CN 108200353 A CN108200353 A CN 108200353A
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- brightness
- brightness value
- coefficient
- video camera
- ambient light
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/71—Circuitry for evaluating the brightness variation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Studio Devices (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The present invention provides a kind of security monitoring camera environment light detection methods, specifically comprise the following steps：(1) by the sensor exposure tests ambient light illuminations of video camera, judge whether to be less than setting brightness value；(2) it less than setting brightness value, then opens infrared lamp and carries out light filling；(3) by the photosensitive detection ambient light illumination of video camera, judge whether to be more than setting brightness value；(4) more than setting brightness value, then infrared lamp is closed.The present invention passes through photosensitive plus Sensor exposure tests schemes, brightness value is read in combine detection ambient light, the exposure of the Sensor that daytime passes through video camera, is turned after black and white through the photosensitive detection ambient light illumination of video camera, it is not accurate to solve low-light (level), single alternative instability problem.
Description
Technical field
The invention belongs to security monitoring technology, more particularly, to a kind of security monitoring camera environment light detection side
Method.
Background technology
With the fast development of physics network technology, safety monitoring product also more and more appears in people’s lives and works as
In, more and more facilities are brought to people’s lives, traditional camera is usually to increase to the light detection of ambient enviroment
If ambient light sensor, but single environment light detection method is not accurate, and the photosensitive detection of single use, advantage is not by infrared
Shadow is rung, shortcoming：Insensitive for low-light (level) detection, less than below 1lux ambient lights, accuracy of detection is inadequate；Single use
Sensor exposure tests, advantage：Detection is accurate, can detect the ambient light less than below 1lux, and shortcoming is easily influenced by infrared light, opened
During infrared light, the environmental light brightness that detects increases, and infrared lamp is caused to be closed, and be easy to cause that infrared lamp switches repeatedly in this way asks
Topic.
Invention content
In view of this, the present invention is directed to propose a kind of security monitoring camera environment light detection method, is supervised with solving security protection
The demand that control video camera detects low light environment.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
A kind of security monitoring camera environment light detection method, specifically comprises the following steps：
(1) by the sensor exposure tests ambient light illuminations of video camera, judge whether to be less than setting brightness value；
(2) it less than setting brightness value, then opens infrared lamp and carries out light filling；
(3) by the photosensitive detection ambient light illumination of video camera, judge whether to be more than setting brightness value；
(4) more than setting brightness value, then infrared lamp is closed.
Further, in the step (1), by reading the real-time exposure values of Sensor, it is converted to present ambient light
Brightness specific formula for calculation is：
Fki=(((Bsum/Gsum) -1) * ((Rsum/Gsum) -1) * Ftype) ^2；
Wherein, Rsum, Gsum, Bsum are the brightness statistics information of tri- colors of RGB respectively；
Ftype is colour brightness statistics coefficient relevant with sensor, is determined by more scrnario testings；Fki is most
Whole brightness calculation coefficient.
Further, the step (1) needs regulation coefficient being used in combination with present intensity statistical information, needs pair
Coefficient carries out certain algorithm adjustment, it is ensured that the calculating of intrinsic brilliance is not interfered in actual scene, specific algorithm is：
Flum=Fsensor*lum*Fki
Wherein, lum is the brightness statistics information being calculated by average brightness
Fki is the coefficient value of Color influences brightness that previous step is calculated
Fsensor is that finally the regulation coefficient of brightness is obtained by more scene comparisons.
Relative to the prior art, a kind of security monitoring camera environment light detection method of the present invention has following excellent
Gesture：
The present invention is by photosensitive plus Sensor exposure tests schemes, combine detection ambient light, daytime passes through video camera
Brightness value is read in the exposure of Sensor, turns that it is not smart to solve low-light (level) by the photosensitive detection ambient light illumination of video camera after black and white
Standard, single alternative instability problem.
Description of the drawings
The attached drawing for forming the part of the present invention is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is the photaesthesia photocurrent curve schematic diagram described in the embodiment of the present invention；
Fig. 2 is a kind of security monitoring camera ambient light detection method flow chart described in the embodiment of the present invention.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Photaesthesia photocurrent curve as shown in Figure 1；Ambient light less than 1lux is nonlinear curve, easily causes detection not
Quasi- problem, the technical solution adopted in the present invention by photosensitive as shown in Fig. 2, add Sensor exposure tests schemes, combine detection
Ambient light, (combination is that brightness value is read in the exposure for the Sensor that daytime passes through video camera, passes through video camera after turning black and white
Photosensitive detection ambient light illumination) not accurate, the single alternative instability problem, by the daytime when, making that solves low-light (level)
With Sensor exposure tests schemes, by reading the real-time exposure values of Sensor, it is converted to present environmental light brightness, (parameter
Formula is：Algorithmic formula is：
Fki=(((Bsum/Gsum) -1) * ((Rsum/Gsum) -1) * Ftype) ^2
Wherein, Rsum, Gsum, Bsum are the brightness statistics information of tri- colors of RGB respectively
Ftype is colour brightness statistics coefficient relevant with sensor, is determined by more scrnario testings.
Fki is final brightness calculation coefficient.
Further, it is described to need regulation coefficient being used in combination with present intensity statistical information, need to coefficient into
The certain algorithm adjustment of row, it is ensured that the calculating of intrinsic brilliance is not interfered in actual scene.
Algorithmic formula is：
Flum=Fsensor*lum*Fki
Wherein, lum is the brightness statistics information being calculated by average brightness
Fki is the coefficient value of Color influences brightness that previous step is calculated
Fsensor is that finally the regulation coefficient of brightness can be obtained by more scene comparisons.
) determine whether the brightness value less than setting, it determines a need for out infrared lamp and carries out light filling；Night opens infrared lamp
When by photosensitive detection, ambient light illumination, photosensitive plus optical filter isolation infrared light, make ambient light illumination do not opened it is infrared
Lamp shadow is rung.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (3)
1. a kind of security monitoring camera environment light detection method, it is characterised in that：Specifically comprise the following steps：
(1) by the sensor exposure tests ambient light illuminations of video camera, judge whether to be less than setting brightness value；
(2) it less than setting brightness value, then opens infrared lamp and carries out light filling；
(3) by the photosensitive detection ambient light illumination of video camera, judge whether to be more than setting brightness value；
(4) more than setting brightness value, then infrared lamp is closed.
2. a kind of security monitoring camera environment light detection method according to claim 1, it is characterised in that：The step
(1) in, by reading the real-time exposure values of Sensor, being converted to present environmental light brightness specific formula for calculation is：
Fki=(((Bsum/Gsum) -1) * ((Rsum/Gsum) -1) * Ftype) ^2；
Wherein, Rsum, Gsum, Bsum are the brightness statistics information of tri- colors of RGB respectively；
Ftype is colour brightness statistics coefficient relevant with sensor, is determined by more scrnario testings；Fki is final
Brightness calculation coefficient.
3. a kind of security monitoring camera environment light detection method according to claim 2, it is characterised in that：The step
(1), it needs regulation coefficient being used in combination with present intensity statistical information, needs to carry out coefficient certain algorithm adjustment, really
The calculating that intrinsic brilliance is not interfered in actual scene is protected, specific algorithm is：
Flum=Fsensor*lum*Fki
Wherein, lum is the brightness statistics information being calculated by average brightness
Fki is the coefficient value of Color influences brightness that previous step is calculated
Fsensor is that finally the regulation coefficient of brightness is obtained by more scene comparisons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810146812.5A CN108200353B (en) | 2018-02-12 | 2018-02-12 | Method for detecting environment light of security monitoring camera |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810146812.5A CN108200353B (en) | 2018-02-12 | 2018-02-12 | Method for detecting environment light of security monitoring camera |
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| Publication Number | Publication Date |
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| CN108200353A true CN108200353A (en) | 2018-06-22 |
| CN108200353B CN108200353B (en) | 2020-05-12 |
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| CN201810146812.5A Active CN108200353B (en) | 2018-02-12 | 2018-02-12 | Method for detecting environment light of security monitoring camera |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109011490A (en) * | 2018-10-24 | 2018-12-18 | 深圳市衡泰信科技有限公司 | Golf sports ground sensing device and method based on infrared binocular high-speed camera |
| CN109151435A (en) * | 2018-09-30 | 2019-01-04 | Oppo广东移动通信有限公司 | A kind of data processing method, terminal, server and computer storage medium |
| CN109302566A (en) * | 2018-11-22 | 2019-02-01 | 深圳市景阳科技股份有限公司 | A kind of method, apparatus and terminal device of determining screening-mode |
| CN109636728A (en) * | 2018-12-24 | 2019-04-16 | 天津天地伟业信息系统集成有限公司 | A kind of color calibration method of image mosaic |
| CN111741230A (en) * | 2019-11-21 | 2020-10-02 | 天津九安医疗电子股份有限公司 | Camera head |
| CN115988328A (en) * | 2023-03-17 | 2023-04-18 | 深圳市兴邦维科科技有限公司 | Photosensitive automatic light supplementing management system based on security monitoring equipment |
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| CN201127061Y (en) * | 2007-12-19 | 2008-10-01 | 深圳市同洲电子股份有限公司 | Camera as well as image processing device under low light intensity condition |
| CN105530437A (en) * | 2016-01-29 | 2016-04-27 | 生迪智慧科技有限公司 | Environment brightness measurement and calculation method and shooting device |
| CN106375645A (en) * | 2015-07-21 | 2017-02-01 | 杭州海康威视数字技术股份有限公司 | Infrared-camera-device-based adaptive control system |
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| CN201127061Y (en) * | 2007-12-19 | 2008-10-01 | 深圳市同洲电子股份有限公司 | Camera as well as image processing device under low light intensity condition |
| CN106375645A (en) * | 2015-07-21 | 2017-02-01 | 杭州海康威视数字技术股份有限公司 | Infrared-camera-device-based adaptive control system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109151435A (en) * | 2018-09-30 | 2019-01-04 | Oppo广东移动通信有限公司 | A kind of data processing method, terminal, server and computer storage medium |
| CN109011490A (en) * | 2018-10-24 | 2018-12-18 | 深圳市衡泰信科技有限公司 | Golf sports ground sensing device and method based on infrared binocular high-speed camera |
| CN109011490B (en) * | 2018-10-24 | 2021-02-02 | 深圳市衡泰信科技有限公司 | Golf sport ground sensing device and method based on infrared binocular high-speed camera shooting |
| CN109302566A (en) * | 2018-11-22 | 2019-02-01 | 深圳市景阳科技股份有限公司 | A kind of method, apparatus and terminal device of determining screening-mode |
| CN109636728A (en) * | 2018-12-24 | 2019-04-16 | 天津天地伟业信息系统集成有限公司 | A kind of color calibration method of image mosaic |
| CN111741230A (en) * | 2019-11-21 | 2020-10-02 | 天津九安医疗电子股份有限公司 | Camera head |
| CN115988328A (en) * | 2023-03-17 | 2023-04-18 | 深圳市兴邦维科科技有限公司 | Photosensitive automatic light supplementing management system based on security monitoring equipment |
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| CN108200353B (en) | 2020-05-12 |
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