CN107147853A - A kind of video monitoring intelligent infrared regulating system and method - Google Patents
A kind of video monitoring intelligent infrared regulating system and method Download PDFInfo
- Publication number
- CN107147853A CN107147853A CN201710292341.4A CN201710292341A CN107147853A CN 107147853 A CN107147853 A CN 107147853A CN 201710292341 A CN201710292341 A CN 201710292341A CN 107147853 A CN107147853 A CN 107147853A
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- Prior art keywords
- infrared lamp
- resistance
- brightness
- infrared
- value
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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
- H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
-
- 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
- H04N23/73—Circuitry for compensating brightness variation in the scene by influencing the exposure time
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The present invention relates to a kind of video monitoring intelligent infrared regulating system and method.The adjusting method comprises the following steps：Acquisition monitoring image；Figure is divided into 15 × 17 windows according to wide contour rule；The light exposure weight coefficient of the window of monitoring image 15 × 17 is set；Value statistics is exposed according to weight coefficient, the infrared lamp brightness value m for needing to set is obtained according to light exposure statistical value S, and current infrared lamp brightness value n compares, current infrared lamp value n>M, infrared lamp luminance-reduction, current infrared lamp value n<M, infrared lamp brightness is improved；By brilliance control algorithm, brightness control signal, i.e. pwm signal are exported；Pwm signal is converted into constant-current source circuit；Infrared lamp regulation control is carried out by constant-current source control.The present invention automatically adjusts the brightness of infrared lamp according to monitored picture picture quality, it is ensured that monitored picture is high-visible, reduces infrared lamp power consumption, effectively extends the service life of monitoring device.
Description
（One）Technical field
It is that one kind is used to ensure video monitoring image matter the present invention relates to a kind of video monitoring intelligent infrared regulating system and method
Amount and the system and method for improving video monitoring equipment service life.
（Two）Background technology
As social safety is increasingly by country's attention, video monitoring has been widely used for every field, and monitoring device exists
It is intended to holding with any place any time and works long hours, it is ensured that the normal of monitored picture clearly turns into the basic of video monitoring
It is required that.And in the case where night illumination is very low, in order to normally monitor, it is necessary to carry out infrared light filling, to solve, image is excessively dark to ask
Topic.Control at present for infrared light is relatively simple, for example, the light filling of infrared lamp is controlled by simple either on or off, so
Mode brightness be fixed, it is impossible to the demand high-visible to all monitor areas is met, while the work of long-time high power consumption
Work can reduce the whole service life of video monitoring equipment.Such case is directed to, the present invention develops one kind according to monitoring figure
As quality automatically adjusts the brightness of infrared lamp, it is ensured that monitor area high-visible regulating system and method, while power consumption is reduced,
Extend infrared lamp service life.
（Three）The content of the invention
The present invention belongs to and regarded to make up the deficiencies in the prior art there is provided a kind of video monitoring intelligent infrared regulating system and method
Frequency monitoring image quality-monitoring algorithm, by the picture quality in analysis monitoring region, to adjust the brightness of infrared lamp in real time, it is ensured that
Monitor area is high-visible, while reducing infrared lamp power consumption, extends its service life.
The present invention is achieved by the following technical solutions：
The video monitoring intelligent infrared regulating system of the present invention, it is characterised in that：It includes the video monitoring monitoring being connected with each other
The infrared adjustment module of module, video monitoring, hardware-assist circuit and constant-current source control module；
Video monitoring monitoring modular：Monitoring image is divided into 15 × 17 windows according to wide contour rule, monitoring image is set
The light exposure weight coefficient of 15 × 17 windows, is exposed value statistics according to weight coefficient, is obtained according to light exposure statistical value S
The infrared lamp brightness value m set, and current infrared lamp brightness value n is needed to compare, if current infrared lamp value n>M, sends infrared lamp
Luminance-reduction is instructed, if current infrared lamp value n<M, sends infrared lamp brightness and improves instruction；
The infrared adjustment module of video monitoring：Infrared lamp brightness is classified by N grades, the sample frequency of brightness, a frame is set
Once, the time interval of a frame is determined by the equipment setting situation of practical application, and light exposure collection is not influenceed for sampling, according to
The partial pressure range of classification situation and peripheral hardware circuit sets the frequency and pulse width of PMW controllers, sets up corresponding table, passes through
Brightness control module, exports brightness control signal, i.e. pwm signal；
Hardware-assist circuit：Pwm signal is converted into constant-current source circuit, i.e. the output of PMW controllers is used as constant-current source circuit
Input, the constant-current source circuit includes resistance R1, resistance R2, resistance R3, and resistance R1 connects resistance R2 one end, electric capacity C1 respectively
One end, the resistance R2 other end connects resistance R3 one end, electric capacity C2 one end respectively, electric capacity C1, electric capacity C2, resistance R3 it is another
One end is connected with ground wire GND；
Constant-current source control module：Line Chart is set up, wherein, transverse axis is voltage, and the longitudinal axis is current ratio, and electricity is drawn according to Line Chart
Flow valuve, carries out infrared lamp regulation control.
The video monitoring intelligent infrared adjusting method of the present invention, comprises the following steps：
1st, acquisition monitoring image；
2nd, figure is subjected to wide contour rule and is divided into 15 × 17 windows.
The 3rd, the weight coefficient of 15 × 17 windows of monitoring image is set；
4th, it is exposed value statistics according to weight coefficient；
5th, intelligent infrared regulation algorithm：Light exposure maximum Emax is set, N sections are equally divided into；Infrared lamp range of luminance values [0,
N]；
6th, setting light exposure statistical value is equal to S, according to S in the corresponding sequence number m of Emax piecewise intervals, adjusts infrared lamp brightness value：
If current infrared lamp value n>M, reduces infrared lamp brightness, if current infrared lamp value n<M, improves infrared lamp brightness, current infrared lamp
Value n=m, without regulation；
7th, by infrared lamp brilliance control algorithm, brightness control signal, i.e. pwm signal are exported；
8th, pwm signal is converted into constant-current source circuit；
The constant-current source circuit includes resistance R1, resistance R2, resistance R3, and resistance R1 connects resistance R2 one end, electric capacity C1 respectively
One end, the resistance R2 other end connects resistance R3 one end, electric capacity C2 one end respectively, electric capacity C1, electric capacity C2, resistance R3 it is another
One end is connected with ground wire GND；
9th, infrared lamp regulation is carried out by constant-current source control to control.
Waiting Graph is stable as light exposure and infrared lamp brightness regulation.
The beneficial effects of the invention are as follows：The present invention automatically adjusts the brightness of infrared lamp according to monitored picture picture quality, protects
Monitored picture is demonstrate,proved high-visible, has reduced infrared lamp power consumption, effectively extend the service life of monitoring device.
（Four）Brief description of the drawings
Accompanying drawing 1 is schematic flow sheet of the invention.
（Five）Embodiment
Accompanying drawing is a kind of specific embodiment of the invention.
The video monitoring intelligent infrared regulating system of the present invention, it includes the video monitoring monitoring modular of interconnection, regarded
Frequency monitors infrared adjustment module, hardware-assist circuit and constant-current source control module；Video monitoring monitoring modular is according to monitored picture
Picture quality, adjusts the brightness of algorithm calculating infrared lamp needs setting by intelligent infrared and is adjusted.
The intelligent infrared regulating system, it includes structure in detailed below：
Video monitoring monitoring modular：Monitoring image is divided into 15 × 17 windows according to wide contour rule, monitoring image is set
The light exposure weight coefficient of 15 × 17 windows, is exposed value statistics according to weight coefficient, is obtained according to light exposure statistical value S
The infrared lamp brightness value m set, and current infrared lamp brightness value n is needed to compare, if current infrared lamp value n>M, sends infrared lamp
Luminance-reduction is instructed, if current infrared lamp value n<M, sends infrared lamp brightness and improves instruction；
The infrared adjustment module of video monitoring：Infrared lamp brightness is classified by N grades, the sample frequency of brightness, a frame is set
Once, the time interval of a frame is determined by the equipment setting situation of practical application, and light exposure collection is not influenceed for sampling, according to
The partial pressure range of classification situation and peripheral hardware circuit sets the frequency and pulse width of PMW controllers, sets up corresponding table, passes through
Brightness control module, exports brightness control signal, i.e. pwm signal；
Hardware-assist circuit：Pwm signal is converted into constant-current source circuit, i.e. the output of PMW controllers is used as constant-current source circuit
Input, the constant-current source circuit includes resistance R1, resistance R2, resistance R3, and resistance R1 connects resistance R2 one end, electric capacity C1 respectively
One end, the resistance R2 other end connects resistance R3 one end, electric capacity C2 one end respectively, electric capacity C1, electric capacity C2, resistance R3 it is another
One end is connected with ground wire GND；
Constant-current source control module：Line Chart is set up, wherein, transverse axis is voltage, and the longitudinal axis is current ratio, and electricity is drawn according to Line Chart
Flow valuve, carries out infrared lamp regulation control.
The video monitoring intelligent infrared adjusting method of the present invention, comprises the following steps：
1st, acquisition monitoring image；
2nd, figure is divided into 15 × 17 windows according to wide contour rule；
The 3rd, the weight coefficient of the window of monitoring image 15 × 17 is set；
4th, it is exposed value statistics according to weight coefficient；
5th, intelligent infrared regulation algorithm：Light exposure maximum Emax is set, N sections are equally divided into；Infrared lamp range of luminance values [0,
N]；
6th, setting light exposure statistical value is equal to S, according to S in the corresponding sequence number m of Emax piecewise intervals, adjusts infrared lamp brightness value：
If current infrared lamp value n>M, sends reduction infrared lamp luminance instructions, if current infrared lamp value n<M, sends and improves infrared lamp brightness
Instruction；Current infrared lamp value n=m, without regulation；
7th, by infrared lamp brilliance control algorithm, brightness control signal, i.e. pwm signal are exported；
8th, pwm signal is converted into constant-current source circuit；
The constant-current source circuit includes resistance R1, resistance R2, resistance R3, and resistance R1 connects resistance R2 one end, electric capacity C1 respectively
One end, the resistance R2 other end connects resistance R3 one end, electric capacity C2 one end respectively, electric capacity C1, electric capacity C2, resistance R3 it is another
One end is connected with ground wire GND；
9th, infrared lamp regulation is carried out by constant-current source control to control.
Waiting Graph is stable as light exposure and infrared lamp brightness regulation.
In described video monitoring intelligent infrared adjusting method, brilliance control algorithm is：
Infrared lamp brightness is classified by 7-1 by N grades, and what is set here is the precision of brightness, and classification is more, and precision is thinner,
The brightness regulation amplitude of infrared lamp is more smooth；
7-2 sets the sample frequency of light exposure, and once, the time interval of a frame is set a frame sampling by the monitoring device of practical application
Condition of pledging love is determined, light exposure collection is not influenceed；
7-3 sets the frequency and pulse width of PMW controllers according to the partial pressure range of classification situation and peripheral hardware circuit, sets up
Corresponding table.
In described video monitoring intelligent infrared adjusting method, brightness upgrade or downgrade is to carry out step by step.
In described video monitoring intelligent infrared adjusting method, constant-current source control is Line Chart, and the transverse axis of the Line Chart is
Voltage, the longitudinal axis is current ratio.
In described video monitoring intelligent infrared adjusting method, in light exposure statistics, transverse axis is light exposure, and the longitudinal axis is segmentation
Situation.
In constant-current source circuit, resistance R1 resistance values are 10k Ω, and resistance R2 is 10 k Ω, and resistance R3 is 51 k Ω, electric capacity C1
Capacitance is 1 uF, and electric capacity C2 capacitances are 0.1 uF.
In step 5, light exposure is equally divided into N sections；Infrared lamp brightness is divided into N grades, and N sections consistent with N grades, such as exposure value
0-100 is divided into 20 sections, and infrared lamp brightness is divided into 20 grades, N=20.Light exposure detection is obtained, and infrared lamp brightness record is obtained.If inspection
Current exposure amount is measured for 26-30, is 6 sections, the brightness value of current infrared lamp is recorded as 5 grades, 5 grades<6 sections, then brightness improves one
Level, infrared lamp brightness value is recorded as 6 grades；If detecting current exposure amount for 11-15, i.e., 3 section, 3 sections<5 grades, then luminance-reduction one
Level, infrared lamp is recorded as 4 grades, and brightness is adjusted step by step, and light exposure and infrared brightness stop regulation when stabilizing to peer.
Claims (7)
1. a kind of video monitoring intelligent infrared regulating system, it is characterised in that：It includes the video monitoring monitoring mould being connected with each other
The infrared adjustment module of block, video monitoring, hardware-assist circuit and constant-current source control module；
Video monitoring monitoring modular：Monitoring image is divided into 15 × 17 windows according to wide contour rule, monitoring image is set
The light exposure weight coefficient of 15 × 17 windows, is exposed value statistics according to weight coefficient, is obtained according to light exposure statistical value S
The infrared lamp brightness value m set, and current infrared lamp brightness value n is needed to compare, if current infrared lamp value n>M, sends infrared lamp
Luminance-reduction is instructed, if current infrared lamp value n<M, sends infrared lamp brightness and improves instruction；
The infrared adjustment module of video monitoring：Infrared lamp brightness is classified by N grades, the sample frequency of brightness, a frame is set
Once, the time interval of a frame is determined by the equipment setting situation of practical application, and light exposure collection is not influenceed for sampling, according to
The partial pressure range of classification situation and peripheral hardware circuit sets the frequency and pulse width of PMW controllers, sets up corresponding table, passes through
Brightness control module, exports brightness control signal, i.e. pwm signal；
Hardware-assist circuit：Pwm signal is converted into constant-current source circuit, the constant-current source circuit includes resistance R1, resistance R2, resistance
R3, resistance R1 connect resistance R2 one end, electric capacity C1 one end respectively, and the resistance R2 other end connects the one of resistance R3 respectively
End, electric capacity C2 one end, electric capacity C1, electric capacity C2, the resistance R3 other end are connected with ground wire GND；
Constant-current source control module：Line Chart is set up, wherein, transverse axis is voltage, and the longitudinal axis is current ratio, and electricity is drawn according to Line Chart
Flow valuve, carries out infrared lamp regulation control.
2. the adjusting method used in video monitoring intelligent infrared regulating system described in a kind of claim 1, it is characterised in that：Bag
Include following steps：
（1）Acquisition monitoring image；
（2）Figure is divided into 15 × 17 windows according to wide contour rule；
（3）The weight coefficient of the window of monitoring image 15 × 17 is set；
（4）Value statistics is exposed according to weight coefficient；
（5）Intelligent infrared adjusts algorithm：Light exposure maximum Emax is set, N sections are equally divided into；Infrared lamp range of luminance values [0,
N]；
（6）Set light exposure statistical value and be equal to S, according to S in the affiliated sequence number m of Emax piecewise intervals, adjust infrared lamp brightness value：
If current infrared lamp value n>M, sends reduction infrared lamp luminance instructions, if current infrared lamp value n<M, sends and improves infrared lamp brightness
Instruction；Current infrared lamp value n=m, without regulation；
（7）By infrared lamp brilliance control algorithm, brightness control signal, i.e. pwm signal are exported；
（8）Pwm signal is converted into constant-current source circuit；
The constant-current source circuit includes resistance R1, resistance R2, resistance R3, and resistance R1 connects resistance R2 one end, electric capacity C1 respectively
One end, the resistance R2 other end connects resistance R3 one end, electric capacity C2 one end respectively, electric capacity C1, electric capacity C2, resistance R3 it is another
One end is connected with ground wire GND；
（9）Infrared lamp regulation control is carried out by constant-current source control.
3. video monitoring intelligent infrared adjusting method according to claim 1, it is characterised in that：
Step（7）In, infrared lamp brilliance control algorithm is：
（7-1）Infrared lamp brightness is classified by N grades, what is set here is the precision of brightness, classification is more, and precision is got over
Carefully, the brightness amplitude of variation of lamp is more smooth；
（7-2）The sample frequency of brightness is set, once, the time interval of a frame sets feelings to a frame sampling by the equipment of practical application
Condition is determined, brightness collection is not influenceed；
（7-3）The frequency and pulse width of PMW controllers are set according to the partial pressure range of classification situation and peripheral hardware circuit, is built
Vertical corresponding table.
4. video monitoring intelligent infrared adjusting method according to claim 1 or 2, it is characterised in that：
Step（9）In, infrared lamp brightness regulation upgrade or downgrade is to carry out step by step.
5. video monitoring intelligent infrared adjusting method according to claim 1 or 2, it is characterised in that：
Step（8）In, constant-current source control is Line Chart, and the transverse axis of the Line Chart is voltage, and the longitudinal axis is current ratio.
6. video monitoring intelligent infrared adjusting method according to claim 1 or 2, it is characterised in that：
Step（8）In, resistance R1 resistance values are 10k Ω, and resistance R2 is 10 k Ω, and resistance R3 is 51 k Ω, electric capacity C1 capacitances
For 1 uF, electric capacity C2 capacitances are 0.1 uF.
7. video monitoring intelligent infrared adjusting method according to claim 1 or 2, it is characterised in that：Step（4）In, expose
In light quantity statistics, transverse axis is light exposure, and the longitudinal axis is segmentation situation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710292341.4A CN107147853A (en) | 2017-04-28 | 2017-04-28 | A kind of video monitoring intelligent infrared regulating system and method |
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| CN201710292341.4A CN107147853A (en) | 2017-04-28 | 2017-04-28 | A kind of video monitoring intelligent infrared regulating system and method |
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| CN107147853A true CN107147853A (en) | 2017-09-08 |
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ID=59774004
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| CN201710292341.4A Pending CN107147853A (en) | 2017-04-28 | 2017-04-28 | A kind of video monitoring intelligent infrared regulating system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108513080A (en) * | 2018-04-19 | 2018-09-07 | 深圳臻迪信息技术有限公司 | A kind of control method and device of light filling |
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| CN101710955A (en) * | 2009-11-24 | 2010-05-19 | 北京中星微电子有限公司 | Method and equipment for adjusting brightness and contrast |
| CN102368809A (en) * | 2011-09-02 | 2012-03-07 | 深圳市先河系统技术有限公司 | Exposure compensation device, method and infrared camera |
| CN204961362U (en) * | 2015-08-24 | 2016-01-13 | 泉州泉港森捷电子技术有限公司 | Computer fan self -starting constant -current drive circuit |
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2017
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1306312A (en) * | 2000-01-17 | 2001-08-01 | 株式会社半导体能源研究所 | Displayikng system and electronic device |
| CN1800996A (en) * | 2005-01-04 | 2006-07-12 | 精工爱普生株式会社 | Exposure apparatus and image forming apparatus |
| CN101399924A (en) * | 2007-09-25 | 2009-04-01 | 展讯通信（上海）有限公司 | Automatic exposure method and device based on brightness histogram |
| CN101710955A (en) * | 2009-11-24 | 2010-05-19 | 北京中星微电子有限公司 | Method and equipment for adjusting brightness and contrast |
| CN102368809A (en) * | 2011-09-02 | 2012-03-07 | 深圳市先河系统技术有限公司 | Exposure compensation device, method and infrared camera |
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| CN108513080A (en) * | 2018-04-19 | 2018-09-07 | 深圳臻迪信息技术有限公司 | A kind of control method and device of light filling |
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Application publication date: 20170908 |