CN107370956A - A kind of method and starlight video camera for realizing the switching of starlight video camera diurnal pattern - Google Patents
A kind of method and starlight video camera for realizing the switching of starlight video camera diurnal pattern Download PDFInfo
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- CN107370956A CN107370956A CN201710719557.4A CN201710719557A CN107370956A CN 107370956 A CN107370956 A CN 107370956A CN 201710719557 A CN201710719557 A CN 201710719557A CN 107370956 A CN107370956 A CN 107370956A
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- brightness
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- control module
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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
- H04N23/60—Control of cameras or camera modules
- H04N23/667—Camera operation mode switching, e.g. between still and video, sport and normal or high- and low-resolution modes
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Abstract
The present invention, which discloses a kind of method for realizing the switching of starlight video camera diurnal pattern and starlight video camera, method, includes step：A, the brightness of environment is detected by brightness impression control module, when the brightness of environment is less than first threshold, notice starlight shooting mainboard is switched to night mode；Or when the brightness of environment is higher than first threshold, notice starlight shooting mainboard is switched to day mode；B, after starlight shooting mainboard receives the notice of switching night mode, check image brightness, if brightness of image is less than Second Threshold, notice brightness impression control module opens infrared lamp, and switches to night mode；After starlight shooting mainboard receives the notice of switching day mode, then brightness impression control module is notified to close infrared lamp, and switch to day mode.In the present invention, night mode switching time point is determined by the signal and brightness of image of brightness impression control module, can thus solve the problems, such as that day and night switch mode switching is too early.
Description
Technical field
The present invention relates to security monitoring video camera field, more particularly to a kind of method for realizing the switching of starlight video camera diurnal pattern
And starlight video camera.
Background technology
Security monitoring camera, using day mode (being also color mode), can export when ambient brightness is high
Coloured image.In the case where ambient brightness is low, the scene of monitoring can not be seen, thus have to switch over night mode (
It is white-black pattern), and infrared lamp light filling is used, export black white image.In general video camera color mode is cut to white-black pattern
It is a little 20LUX~5LUX or so to change, and white-black pattern to color mode switching point is 20LUX or so.
But as video camera manufacturing technology improves, video camera is in the very dark situation of ambient brightness (low-light (level)), still
The normal coloured image of gem-pure brightness can be photographed, this video camera is referred to as starlight video camera.
The method of existing pattern switching, a kind of is the brightness of brightness impression controller detection environment, when ambient brightness is low
In certain threshold value, notice shooting mainboard is switched to night mode (output black white image), while opens infrared lamp light filling.Work as ring
Border brightness is higher than certain threshold value, and notice shooting mainboard is switched to day mode (coloured image of publishing books), simultaneously closes off infrared lamp.
This mode is in the industry cycle referred to as Passive Mode.But the ambient brightness Detection accuracy of brightness impression controller and detection essence
Degree, is at most merely able to be accurately detected 0.1LUX~1LUX, can not meet 0.01LUX requirement.
Another kind is that brightness impression controller does not do the judgement of day mode and night pattern, but ambient brightness value
(analog signal) is delivered to starlight shooting mainboard, images mainboard by starlight to judge.Starlight shooting mainboard is judged to need
After switching night mode from daytime, notice brightness impression controller opens infrared lamp.Starlight shooting mainboard is judged to need
After night mode switches day mode, notice brightness impression controller closes infrared lamp.Based on this method is in the industry cycle referred to as
Dynamic model formula.
So doing needs starlight shooting mainboard increase A/D (Analog-digital Converter) modules and comparison module, adds star
Light images the complexity and cost of mainboard.Moreover, if the sensor of the brightness impression controller coordinated uses different, starlight
Shooting mainboard needs to adjust threshold value at any time, and A/D (Analog-digital Converter) modules and comparison module of starlight shooting mainboard need
Follow the species of brightness impression controller to change and change, be not suitable for the large-scale production of starlight shooting mainboard.
Therefore, prior art has yet to be improved and developed.
The content of the invention
In view of above-mentioned the deficiencies in the prior art, it is an object of the invention to provide one kind to realize starlight video camera diurnal pattern
The method and starlight video camera of switching, it is intended to otherwise solve existing starlight video camera diurnal pattern switching method precision it is not high,
The problems such as cost is high.
Technical scheme is as follows：
A kind of method for realizing the switching of starlight video camera diurnal pattern, wherein, including step：
A, the brightness of environment is detected by brightness impression control module, when the brightness of environment is less than first threshold, notice
Starlight shooting mainboard is switched to night mode；Or when the brightness of environment is higher than first threshold, notice starlight shooting owner
Plate is switched to day mode；
B, after starlight shooting mainboard receives the notice of switching night mode, check image brightness, if brightness of image is low
In Second Threshold, then brightness impression control module is notified to open infrared lamp, and switch to night mode；Starlight images mainboard
After the notice for receiving switching day mode, then brightness impression control module is notified to close infrared lamp, and switch to mould on daytime
Formula.
The described method for realizing the switching of starlight video camera diurnal pattern, wherein, in the step B, starlight shooting owner
After plate receives the notice of switching night mode, check image brightness, if brightness of image is higher than Second Threshold, control flow knot
Beam.
The described method for realizing the switching of starlight video camera diurnal pattern, wherein, in the step B, brightness impression control
Module to infrared lamp after opening signal is sent, and control infrared lamp is opened, or brightness impression control module is sent out to infrared lamp
After going out shutdown signal, control infrared lamp is closed.
The described method for realizing the switching of starlight video camera diurnal pattern, wherein, the scope of the first threshold is 5LUX
~20LUX.
The described method for realizing the switching of starlight video camera diurnal pattern, wherein, the scope of the Second Threshold is
0.01LUX~2LUX.
A kind of starlight video camera, wherein, including brightness impression control module, starlight shooting mainboard, infrared lamp；
The brightness of environment is detected by brightness impression control module, when the brightness of environment is less than first threshold, notifies star
Light shooting mainboard is switched to night mode；Or when the brightness of environment is higher than first threshold, notice starlight shooting mainboard
It is switched to day mode；
After starlight shooting mainboard receives the notice of switching night mode, check image brightness, if brightness of image is less than
Second Threshold, then notify brightness impression control module to open infrared lamp, and switch to night mode；Starlight shooting mainboard connects
After the notice for receiving switching day mode, then brightness impression control module is notified to close infrared lamp, and switch to day mode.
Described starlight video camera, wherein, after starlight shooting mainboard receives the notice of switching night mode, check figure
Image brightness, if brightness of image is higher than Second Threshold, control flow terminates.
Described starlight video camera, wherein, for brightness impression control module after opening signal is sent to infrared lamp, control is red
Outer lamp is opened, or brightness impression control module, after shutdown signal is sent to infrared lamp, control infrared lamp is closed.
Described starlight video camera, wherein, the scope of the first threshold is 5LUX~20LUX.
Described starlight video camera, wherein, the scope of the Second Threshold is 0.01LUX~2LUX.
Beneficial effect：In the present invention, night mode switching time point images mainboard combination brightness impression by starlight and controlled
The signal of module and brightness of image determine, thus can be switched to night mode in the case where ambient brightness is very dark, solve
The problem of certainly day and night switch mode switching is too early.
Brief description of the drawings
Fig. 1 provides a kind of structured flowchart of starlight video camera for the present invention.
Fig. 2 provides a kind of sequential for the method concrete application scene for realizing the switching of starlight video camera diurnal pattern for the present invention
Figure.
Embodiment
The present invention provides a kind of method and starlight video camera for realizing the switching of starlight video camera diurnal pattern, to make the present invention
Purpose, technical scheme and effect it is clearer, clear and definite, the present invention is described in more detail below.It should be appreciated that this place
The specific embodiment of description only to explain the present invention, is not intended to limit the present invention.
A kind of method for realizing the switching of starlight video camera diurnal pattern provided by the present invention, it includes step：
S1, the brightness by brightness impression control module detection environment, when the brightness of environment is less than first threshold, notice
Starlight shooting mainboard is switched to night mode；Or when the brightness of environment is higher than first threshold, notice starlight shooting owner
Plate is switched to day mode；
After S2, starlight shooting mainboard receive the notice of switching night mode, check image brightness, if brightness of image is low
In Second Threshold, then brightness impression control module is notified to open infrared lamp, and switch to night mode；Starlight images mainboard
After the notice for receiving switching day mode, then brightness impression control module is notified to close infrared lamp, and switch to mould on daytime
Formula.
In the present invention, as shown in figure 1, the starlight video camera 100 includes brightness impression control module 120, starlight images
Mainboard 110, infrared lamp 130.
Infrared lamp 130 therein is when opening so that black white image brightens；It can receive brightness impression control module 120
Control signal, and carry out the processing of switch lamp.After opening signal is received, infrared lamp 130 is opened；After receiving shutdown signal,
Infrared lamp 130 is closed.That is, brightness impression control module 120, after opening signal is sent to infrared lamp 130, control is red
Outer lamp 130 is opened, or brightness impression control module 120 controls infrared lamp 130 after shutdown signal is sent to infrared lamp 130
Close.
Brightness impression control module 120 therein is used for the brightness for detecting environment, and when ambient brightness is less than first threshold
When, notice starlight shooting mainboard 110 is switched to night mode.When ambient brightness is higher than first threshold, notice starlight shooting
Mainboard 110 is switched to day mode.And after the infrared lamp opening signal that starlight shooting mainboard 110 is sent is received,
Opening signal is sent to infrared lamp 130.After closing 130 signal of infrared lamp of starlight shooting mainboard 110 is received, to infrared
Lamp 130 sends shutdown signal.
Starlight shooting mainboard 110 receives the day mode switching night mode of the transmission of brightness impression control module 120
Notice after, check image brightness, if brightness of image is less than Second Threshold, notice brightness impression control module 120 is opened red
Outer lamp 130, and switch to black white image (night mode).Receive the night mode switching of brightness impression control module 120
After day mode, notice brightness impression control module 120 closes infrared lamp 130, and switches to coloured image (day mode).
Specifically, in the step S2, after starlight shooting mainboard 110 receives the notice of switching night mode, check
Brightness of image, if brightness of image is higher than Second Threshold, control flow terminates, and wherein may also include brightness of image certainly and is equal to the
Two threshold values, also flow can control to terminate, that is to say, that even if ambient brightness meets the requirement for switching to night mode, but image
Brightness backlog demand, also without any processing, direct flow terminates.
In the step S2, for brightness impression control module 120 after opening signal is sent to infrared lamp 130, control is infrared
Lamp 130 is opened, or brightness impression control module 120, after shutdown signal is sent to infrared lamp 130, control infrared lamp 130 closes
Close.
As shown in Fig. 2 its timing diagram for the concrete application scene of the present invention, including：
Brightness impression control module detection ambient brightness is less than first threshold, and notice starlight shooting mainboard is switched to night
Pattern；
Starlight shooting mainboard detection image brightness is less than Second Threshold, and receives brightness impression control module transmission
What is come over is switched to the signal of night mode, just actually enters night mode；
Starlight images mainboard and the signal for opening infrared lamp is sent to brightness impression control module；
Brightness impression control module receive starlight shooting mainboard send open infrared modulating signal, to infrared lamp send beat
ON signal；
Infrared lamp is bright, sends infrared light；
Image is switched to white-black pattern by starlight shooting mainboard.
Preferably, the scope of the first threshold is 5LUX~20LUX, such as the first threshold is 6LUX, the first threshold
It is worth larger, therefore first threshold can not be only relied on to determine whether to enter night mode, and needs to coordinate Second Threshold simultaneously, institute
0.01LUX~the 2LUX that ranges preferably from of Second Threshold, such as 0.02LUX are stated, therefore the present invention is due to combining brightness of image
Detection, so more accurate detection can be realized, it is not required that often adjust threshold value, detection is more simplified and accurate.
In the present invention, day mode and night mode switching time point image mainboard combination brightness impression by starlight and controlled
The signal of module and brightness of image determine, thus can be switched to night mode in the case where ambient brightness is very dark, solve
The problem of certainly day and night switch mode switching is too early.
Ambient brightness is still judged by brightness impression control module, it is not necessary to which starlight shooting mainboard judges, therefore starlight
Shooting mainboard need not increase A/D (Analog-digital Converter) modules and comparison module, it is not required that according to brightness control module
Species it is different, change A/D (Analog-digital Converter) modules and comparison module be adapted to.
Starlight images the diurnal pattern signal that mainboard combination brightness of image and brightness impression control module pass over, energy
It is enough accurately to judge that current environment brightness be operated in day mode (colour) or night mode (black and white) very.When judging
Night mode should be operated in, signal is sent and notifies brightness impression control module to open infrared lamp, and image is switched to
White-black pattern.
The present invention also provides a kind of starlight video camera, and it includes brightness impression control module, starlight images mainboard, infrared
Lamp；
The brightness of environment is detected by brightness impression control module, when the brightness of environment is less than first threshold, notifies star
Light shooting mainboard is switched to night mode；Or when the brightness of environment is higher than first threshold, notice starlight shooting mainboard
It is switched to day mode；
After starlight shooting mainboard receives the notice of switching night mode, check image brightness, if brightness of image is less than
Second Threshold, then notify brightness impression control module to open infrared lamp, and switch to night mode；Starlight shooting mainboard connects
After the notice for receiving switching day mode, then brightness impression control module is notified to close infrared lamp, and switch to day mode.
After the starlight shooting mainboard receives the notice of switching night mode, check image brightness, if brightness of image
Higher than Second Threshold, then control flow terminates.
The brightness impression control module to infrared lamp after opening signal is sent, and control infrared lamp is opened, or brightness
Control module is sensed after shutdown signal is sent to infrared lamp, and control infrared lamp is closed.
The scope of the first threshold is 2LUX~0.01LUX.
Particular technique details on above-mentioned starlight video camera has been described in detail in method above, therefore is repeated no more.
In summary, in the present invention, night mode switching time point images mainboard combination brightness impression by starlight and controlled
The signal of module and brightness of image determine, thus can be switched to night mode in the case where ambient brightness is very dark, solve
The problem of certainly day and night switch mode switching is too early.
It should be appreciated that the application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can
To be improved or converted according to the above description, all these modifications and variations should all belong to the guarantor of appended claims of the present invention
Protect scope.
Claims (10)
- A kind of 1. method for realizing the switching of starlight video camera diurnal pattern, it is characterised in that including step：A, the brightness of environment is detected by brightness impression control module, when the brightness of environment is less than first threshold, notifies starlight Shooting mainboard is switched to night mode；Or when the brightness of environment is higher than first threshold, notice starlight shooting mainboard is cut Change to day mode；B, after starlight shooting mainboard receives the notice of switching night mode, check image brightness, if brightness of image is less than the Two threshold values, then notify brightness impression control module to open infrared lamp, and switch to night mode；Starlight shooting mainboard receives To after the notice of switching day mode, then brightness impression control module is notified to close infrared lamp, and switch to day mode.
- 2. the method according to claim 1 for realizing the switching of starlight video camera diurnal pattern, it is characterised in that the step In B, after starlight shooting mainboard receives the notice of switching night mode, check image brightness, if brightness of image is higher than second Threshold value, then control flow terminate.
- 3. the method according to claim 1 for realizing the switching of starlight video camera diurnal pattern, it is characterised in that the step In B, brightness impression control module after opening signal is sent to infrared lamp, open by control infrared lamp, or brightness impression control Module after shutdown signal is sent to infrared lamp, close by control infrared lamp.
- 4. the method according to claim 1 for realizing the switching of starlight video camera diurnal pattern, it is characterised in that described first The scope of threshold value is 5LUX~20LUX.
- 5. the method according to claim 1 for realizing the switching of starlight video camera diurnal pattern, it is characterised in that described second The scope of threshold value is 0.01LUX~2LUX.
- 6. a kind of starlight video camera, it is characterised in that including brightness impression control module, starlight shooting mainboard, infrared lamp；The brightness of environment is detected by brightness impression control module, when the brightness of environment is less than first threshold, notice starlight is taken the photograph Camera mainboard is switched to night mode；Or when the brightness of environment is higher than first threshold, notice starlight shooting mainboard switching To day mode；After starlight shooting mainboard receives the notice of switching night mode, check image brightness, if brightness of image is less than second Threshold value, then notify brightness impression control module to open infrared lamp, and switch to night mode；Starlight shooting mainboard receives After the notice for switching day mode, then brightness impression control module is notified to close infrared lamp, and switch to day mode.
- 7. starlight video camera according to claim 6, it is characterised in that starlight shooting mainboard receives switching night mould After the notice of formula, check image brightness, if brightness of image is higher than Second Threshold, control flow terminates.
- 8. starlight video camera according to claim 6, it is characterised in that brightness impression control module is sent to infrared lamp After opening signal, control infrared lamp is opened, or brightness impression control module, after shutdown signal is sent to infrared lamp, control is red Outer lamp is closed.
- 9. starlight video camera according to claim 6, it is characterised in that the scope of the first threshold be 5LUX~ 20LUX。
- 10. starlight video camera according to claim 6, it is characterised in that the scope of the Second Threshold be 0.01LUX~ 2LUX。
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| CN108289173A (en) * | 2018-01-23 | 2018-07-17 | 杭州矩视科技有限公司 | A kind of camera shooting control method, device, terminal device and storage medium |
| CN108710857A (en) * | 2018-05-22 | 2018-10-26 | 深圳前海华夏智信数据科技有限公司 | People's vehicle recognition methods based on infrared light filling and device |
| CN109120909A (en) * | 2018-09-13 | 2019-01-01 | 深圳市天视通电子科技有限公司 | A kind of full-color photographic device, the system and method for adjustable light compensating lamp brightness |
| CN109688332A (en) * | 2019-02-14 | 2019-04-26 | 普联技术有限公司 | Image pickup mode method of adjustment, device and terminal device |
| CN109996061A (en) * | 2017-12-29 | 2019-07-09 | 浙江宇视科技有限公司 | The method for detecting abnormality and device of IR-CUT |
| CN112351191A (en) * | 2020-09-14 | 2021-02-09 | 中标慧安信息技术股份有限公司 | Mobile detection processing method and system |
| CN113055580A (en) * | 2019-12-26 | 2021-06-29 | 中兴通讯股份有限公司 | Environment recognition method, shooting mode switching method, terminal and storage medium |
| CN114184275A (en) * | 2021-12-18 | 2022-03-15 | 杭州视洞科技有限公司 | Method for judging day and night by combining soft and hard light sensitivity |
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| CN109688332A (en) * | 2019-02-14 | 2019-04-26 | 普联技术有限公司 | Image pickup mode method of adjustment, device and terminal device |
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| CN114184275A (en) * | 2021-12-18 | 2022-03-15 | 杭州视洞科技有限公司 | Method for judging day and night by combining soft and hard light sensitivity |
| CN114184275B (en) * | 2021-12-18 | 2024-02-13 | 杭州视洞科技有限公司 | Method for judging day and night by combining soft light sensitivity and hard light sensitivity |
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Application publication date: 20171121 |