CN113395427A - Soft photosensitive diagnostic algorithm under full-color night vision - Google Patents
Soft photosensitive diagnostic algorithm under full-color night vision Download PDFInfo
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- CN113395427A CN113395427A CN202110682110.0A CN202110682110A CN113395427A CN 113395427 A CN113395427 A CN 113395427A CN 202110682110 A CN202110682110 A CN 202110682110A CN 113395427 A CN113395427 A CN 113395427A
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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
- H04N23/56—Cameras or camera modules comprising electronic image sensors; Control thereof provided with illuminating means
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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
- H04N23/10—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths
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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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- 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
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/30—Transforming light or analogous information into electric information
- H04N5/33—Transforming infrared radiation
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Abstract
The invention discloses a soft photosensitive diagnostic algorithm under full-color night vision, which comprises the following steps of; step 1, the full-color night vision has three different modes which are black-and-white night vision, full-color night vision and intelligent night vision; step 2, the conditions for entering black and white night vision and full-color night vision are the same; step 3, turning off the infrared lamp picture to restore the color when the white balance and the exposure value reach a threshold value under the condition of entering the daytime from the night under the black-and-white night vision; and 4, entering the daytime condition from the night under full-color night vision. The invention judges whether the actual scene is daytime or night by analyzing the image exposure value and the external environment brightness, solves the problem of falling into the repeated switching night vision after the white light lamp is opened, achieves the intelligent night vision switching as the normal equipment, combines the PWM dynamic adjustment white light lamp, solves the problem of repeated switching of the white light lamp in partial reflective scenes, and greatly improves the reliability of soft light sensitivity.
Description
Technical Field
The invention relates to the technical field of intelligent cameras, in particular to a soft photosensitive diagnosis algorithm under full-color night vision.
Background
The traditional infrared camera has the defects of no color at night, dark brightness, poor contrast ratio and the like, the appearance of the white-light color night vision camera well makes up the defects, the real color of scenery at night is perfectly restored, the color is more real and bright in the daytime, and the effects of no color cast in the daytime and full color at night can be achieved;
the camera can be widely used as an auxiliary lighting tool for a bayonet camera to shoot the license plate of a motor vehicle passing through the bayonet in a road monitoring project, and is used for auxiliary lighting for recording the license plate of the motor vehicle passing in and out of a district parking lot entrance and exit camera. Electricity saving property: the white light cameras can be used as emergency illuminators when the outside is powered off suddenly no matter the white light cameras are installed indoors or outdoors, and particularly, the effect is more remarkable in indoor areas, passages, basements and other areas. Color property: the white light camera fixed focus series uniformly adopts pure color high line low illumination SONY1/3CCD to restore more real color in the daytime, and can clearly capture color images in the 0.LUX environment at night, thereby truly realizing all-weather distribution and monitoring of the monitoring system. Reliability: the stable imported LED white light wick is provided with a matched circuit with strict voltage and current control and a perfect machine body heat conduction system structure, so that the service life of a white light supplement system is changed from theory to reality, the world is advanced in a CCD substrate scheme, and the success rate of a strict surface mounting process flow is 100%.
But to save cost, the hard light sensor is selected to be removed and the soft light sensor is used instead. However, the judgment condition of the infrared camera is relatively simple, and night vision switching of the full-color camera is relatively complex and has some problems;
the picture of the white light lamp is colored when the full-color equipment enters the dark and is turned on. Basically no difference exists in the daytime, the dead cycle is caused by that the white light lamp is turned on and then the night vision is immediately switched back in the daytime according to the method of the previous infrared camera. When the real day comes, the condition that the white light lamp needs to be closed and the judgment cannot be achieved is a difficult point, and the judgment condition of the infrared camera entering the day only needs to judge the exposure value and the white balance;
mainly needs to consider the following points
1) The problem of repeatedly switching night vision after the white light lamp is turned on;
2) the white light lamp has no great difference in parameters between the white light lamp and the daytime after being turned on;
3) the white light lamp can be repeatedly turned on and off in a partial reflecting scene and a narrow scene.
Disclosure of Invention
The invention aims to provide a soft photosensitive diagnostic algorithm under full-color night vision, which can avoid the problem that a white light lamp is repeatedly turned on and off after entering the night, can also solve the problem that equipment cannot sense the arrival of the day when entering the day at night, and can cause the situation that the white light lamp is repeatedly turned on and off in some reflective scenes and narrow scenes.
In order to achieve the purpose, the invention provides the following technical scheme: a soft photosensitive diagnostic algorithm under full-color night vision comprises the following steps;
step 1, the full-color night vision has three different modes which are black-and-white night vision, full-color night vision and intelligent night vision;
s1, the black and white night vision is the same as the previous infrared camera, the infrared lamp is turned on when the night comes, and the picture is changed into black and white;
s2, turning on a white light lamp for light supplement when the full-color night vision enters the night, wherein the picture is still colored;
s3, the intelligent night vision is switched to full-color night vision when the motion detection occurs, and is defaulted to black-and-white night vision when no motion detection occurs;
step 2, the conditions for entering black and white night vision and full-color night vision are the same;
step 3, turning off the infrared lamp picture to restore the color when the white balance and the exposure value reach a threshold value under the condition of entering the daytime from the night under the black-and-white night vision;
step 4, entering the daytime condition from the night under full-color night vision;
s1, turning off the white light lamp along with the brightness when the value of the environment brightness increases to a certain threshold value;
and S2, when the ambient brightness value and the exposure value are large, the scene is judged to be a narrow scene or a reflective scene, and the brightness is reduced by dynamically adjusting the white light lamp through PWM so as to meet the brightness of a normal scene.
Preferably, in step 2, the night is switched in the daytime: and when the exposure value and the white balance red gain meet the threshold condition, the infrared lamp is turned on under black-and-white night vision, and the white light lamp is turned on by the camera under the full-color night vision mode.
The soft photosensitive diagnosis algorithm under full-color night vision provided by the invention has the beneficial effects that:
1. the intelligent night vision switching method and the intelligent night vision switching system judge whether the actual scene is daytime or night by analyzing the image exposure value and the external environment brightness, solve the problem that the repeated night vision switching is performed after the white light lamp is turned on, and achieve the intelligent night vision switching as the same as that of normal equipment;
2. the invention combines PWM to dynamically adjust the white light lamp, solves the problem that the white light lamp is repeatedly switched in part of reflective scenes, and greatly improves the reliability of soft light sensitivity;
3. the invention can save the cost of hard photosensitive in production and is difficult to have the problem of switching failure caused by aging of components compared with hard photosensitive.
Drawings
Fig. 1 is a flow chart of night vision switching according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: a soft photosensitive diagnostic algorithm under full-color night vision comprises the following steps;
step 1, the full-color night vision has three different modes which are black-and-white night vision, full-color night vision and intelligent night vision;
s1, the black and white night vision is the same as the previous infrared camera, the infrared lamp is turned on when the night comes, and the picture is changed into black and white;
s2, turning on a white light lamp for light supplement when the full-color night vision enters the night, wherein the picture is still colored;
s3, the intelligent night vision is switched to full-color night vision when the motion detection occurs, and is defaulted to black-and-white night vision when no motion detection occurs;
step 2, the conditions for entering black and white night vision and full-color night vision are the same;
cutting to night in the daytime: when the exposure value and the white balance red gain meet the threshold condition, the infrared lamp is turned on under black-and-white night vision, and the white light lamp is turned on by the camera under the full-color night vision mode;
step 3, turning off the infrared lamp picture to restore the color when the white balance and the exposure value reach a threshold value under the condition of entering the daytime from the night under the black-and-white night vision;
step 4, entering the daytime condition from the night under full-color night vision;
s1, turning off the white light lamp along with the brightness when the value of the environment brightness increases to a certain threshold value;
and S2, when the ambient brightness value and the exposure value are large, the scene is judged to be a narrow scene or a reflective scene, and the brightness is reduced by dynamically adjusting the white light lamp through PWM so as to meet the brightness of a normal scene.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. A soft photosensitive diagnostic algorithm under full-color night vision is characterized in that: comprises the following steps;
step 1, the full-color night vision has three different modes which are black-and-white night vision, full-color night vision and intelligent night vision;
s1, the black and white night vision is the same as the previous infrared camera, the infrared lamp is turned on when the night comes, and the picture is changed into black and white;
s2, turning on a white light lamp for light supplement when the full-color night vision enters the night, wherein the picture is still colored;
s3, the intelligent night vision is switched to full-color night vision when the motion detection occurs, and is defaulted to black-and-white night vision when no motion detection occurs;
step 2, the conditions for entering black and white night vision and full-color night vision are the same;
step 3, turning off the infrared lamp picture to restore the color when the white balance and the exposure value reach a threshold value under the condition of entering the daytime from the night under the black-and-white night vision;
step 4, entering the daytime condition from the night under full-color night vision;
s1, turning off the white light lamp along with the brightness when the value of the environment brightness increases to a certain threshold value;
and S2, when the ambient brightness value and the exposure value are large, the scene is judged to be a narrow scene or a reflective scene, and the brightness is reduced by dynamically adjusting the white light lamp through PWM so as to meet the brightness of a normal scene.
2. The soft photosensitive diagnostic algorithm at full-color night vision according to claim 1, characterized in that: in step 2, switching to night in the daytime: and when the exposure value and the white balance red gain meet the threshold condition, the infrared lamp is turned on under black-and-white night vision, and the white light lamp is turned on by the camera under the full-color night vision mode.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103702038A (en) * | 2013-12-31 | 2014-04-02 | 浙江宇视科技有限公司 | Dynamic threshold value-based method and device for performing automatic day and night switching |
| US9386230B1 (en) * | 2015-06-12 | 2016-07-05 | Google Inc. | Day and night detection based on one or more of illuminant detection, lux level detection, and tiling |
| CN106534700A (en) * | 2016-12-20 | 2017-03-22 | 济南中维世纪科技有限公司 | Method for realizing soft photosensitivity based on automatic exposure and automatic white balance algorithm |
| CN208445646U (en) * | 2018-06-13 | 2019-01-29 | 深圳市辰赛智能科技有限公司 | Intelligent night vision monitor camera |
| CN208691382U (en) * | 2018-08-21 | 2019-04-02 | 杭州海康威视数字技术股份有限公司 | A kind of video camera |
-
2021
- 2021-06-20 CN CN202110682110.0A patent/CN113395427A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103702038A (en) * | 2013-12-31 | 2014-04-02 | 浙江宇视科技有限公司 | Dynamic threshold value-based method and device for performing automatic day and night switching |
| US9386230B1 (en) * | 2015-06-12 | 2016-07-05 | Google Inc. | Day and night detection based on one or more of illuminant detection, lux level detection, and tiling |
| CN106534700A (en) * | 2016-12-20 | 2017-03-22 | 济南中维世纪科技有限公司 | Method for realizing soft photosensitivity based on automatic exposure and automatic white balance algorithm |
| CN208445646U (en) * | 2018-06-13 | 2019-01-29 | 深圳市辰赛智能科技有限公司 | Intelligent night vision monitor camera |
| CN208691382U (en) * | 2018-08-21 | 2019-04-02 | 杭州海康威视数字技术股份有限公司 | A kind of video camera |
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Application publication date: 20210914 |