CN102984510A - Light supplement control method and device - Google Patents
Light supplement control method and device Download PDFInfo
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Abstract
The invention provides a light supplement control device which is applied to a monitoring camera. The monitoring camera at least comprises a primary light supplement lamp. The device comprises a movable detection module, an image processing module, a calculation matching module, and a light supplement control module, wherein the movable detection module is used for detecting a moving object in a monitoring frame and informing the image processing module of processing when the moving object is detected; the image processing module is used for confirming a occupation parameter of the moving object in the monitoring frame; the calculation matching module is used for working out an ideal light supplement angle according to the occupation parameter and a camera vision field parameter, and confirming and outputting a light supplement adjusting command according to the ideal light supplement angle; and the light supplement control module is used for controlling at least one primary light supplement lamp to realize the light supplement for the moving object according to the light supplement adjusting command. The light supplement control device detects the moving object, works out the ideal light supplement angle for the moving object, and realizes a targeted light supplement scheme; and the light supplement efficiency is greatly improved compared with the prior art.
Description
Technical field
The present invention relates to Video Supervision Technique, relate in particular to a kind of light filling control method and device of rig camera.
Background technology
At present, the design of video camera band light filling is more and more extensive in the application in monitoring field.Band light filling video camera can effectively strengthen monitored picture picture quality in night or other low-light (level) situations.For the difference of camera supervised distance, generally need to adopt the light compensating lamp of different angles to cooperate with video camera, to realize the covering to the different monitoring distance.The at present realization in the light filling interlock has dual mode.
The first scheme is to adopt the interlock mode of movement multiplying power and light compensating lamp angle.This scheme adopts the light compensating lamp of opening different angles under the different movement multiplying powers to realize that its cardinal principle is to guarantee that the movement angle of visual field and light compensating lamp angle match each other, and avoids the not enough problem of the excessive flashlight effect that causes of difference or light filling.There is obvious defective in this scheme: light compensating lamp control can't be done corresponding adjusting according to the actual conditions of monitored object.First scheme is to realize UNICOM according to image brightness, and its principle is automatically to regulate the light compensating lamp operating current.According to the image brightness Processing Algorithm, judge the brightness of present image, suitably regulate the light compensating lamp operating current, avoid the excessively dark problem of overexposure and image.The problem of this scheme is: regulate the brightness that the light compensating lamp operating current is just regulated whole picture, can't improve the light filling effect of local monitored picture.
Summary of the invention
In view of this, the invention provides a kind of light supplementing control device, be applied on the rig camera, wherein this rig camera comprises a primary light compensating lamp at least, this device comprises mobile detection module, image processing module, calculating matching module and light filling control module, wherein:
Mobile detection module, for detection of the mobile object in the monitored picture, the notice image processing module is processed when detecting mobile object;
Image processing module is used for determining that mobile object is in the parameter that occupies of monitored picture;
Calculate matching module, be used for occupying parameter and the camera field of view calculation of parameter goes out desirable light filling angle according to described, and determine and output light filling adjustment order according to desirable light filling angle;
The light filling control module is used for according to light filling adjustment order at least one primary light compensating lamp being controlled to realize light filling to mobile object.
The present invention detects mobile object, then for mobile object calculates desirable light filling angle, realizes very targetedly light filling scheme thereby accordingly primary light compensating lamp is adjusted, and light filling efficient is greatly improved in terms of existing technologies.
Description of drawings
Fig. 1 is the building-block of logic of light supplementing control device in one embodiment of the present invention.
Fig. 2 is a kind of excessive schematic diagram of object light compensating lamp angle that relatively moves.
Fig. 3 is a kind of schematic diagram of the object light compensating lamp angle too small that relatively moves.
Fig. 4 is a kind of moderate schematic diagram of object light compensating lamp angle that relatively moves.
Fig. 5 is the schematic diagram of determining the Hmax parameter in one embodiment of the present invention.
Fig. 6 is the schematic diagram of determining the Wmax parameter in one embodiment of the present invention.
Fig. 7 is a kind of schematic diagram of determining to occupy radius P of the present invention.
Fig. 8 is the schematic diagram of a kind of definite desirable light filling angle of the present invention.
Embodiment
The invention provides more intelligent light filling scheme and remedy the existing problem of video camera light filling in the prior art.Please refer to Fig. 1, in a kind of preferred embodiment, the invention provides a kind of light supplementing control device, this device comprises: luminance detection module, mobile detection module, image processing module, calculating matching module and light filling control module.This application of installation can be realized by software on video camera, also can realize by programmable logical device, even can realize by the hardware of special use.This device operates in the following handling process of the inner execution of video camera.
Step 101, whether the luminance detection module is the low-light (level) environment for detection of the video camera current environment, if it is notification compensating photocontrol module is opened auxiliary light compensating lamp;
Step 102, mobile detection module detects the mobile object in the monitored picture, and the notice image processing module is processed when detecting mobile object;
Step 103, image processing module determine mobile object in monitored picture occupy parameter and output;
Step 104, calculate matching module according to step 103 output occupy parameter and the camera field of view calculation of parameter goes out desirable light filling angle, and determine and output light filling adjustment order according to desirable light filling angle;
Step 105, the light filling control module controls to realize light filling to mobile object according to light filling adjustment order at least one primary light compensating lamp.
Step 106, exposure tests module regularly detect the exposure quality of mobile object, and close the adjustment of predetermined standard time output light filling at the exposure non-conformity of quality and order to described light filling control module.
The present application people finds that by research video camera with light compensating lamp is in the low-light (level) situation, the light filling effect needs the light compensating lamp angle to cooperate well with the monitoring object just can reach high-quality light filling effect, this is that what the monitoring application was paid close attention to most is exactly monitored mobile object because in a lot of the application.Please refer to Fig. 2, when the light compensating lamp angle is very large, monitored object is when proportion is very little in whole monitored picture, and the light filling energy that can reach monitored object this moment is just very little, and this moment, the light filling effect was just darker.Opposite situation please refer to Fig. 3, when the light compensating lamp angle very little, when monitored object proportion in whole monitored picture exceeds very greatly or the monitoring visual angle, the light filling that can reach monitored object is just very strong, and will cause the overexposure problem of monitored object in the monitored picture or the problem of local overexposure this moment.Please refer to Fig. 4, only have light compensating lamp angle and cooperating of monitored object height and distance just can reach reasonable light filling effect.
In the ordinary course of things, when video camera is in low-light (level) environment lower time, the luminance detection module of camera chain can detect whether video camera is current is in the low-light (level) environment, if enter the then auxiliary light compensating lamp of notification compensating photocontrol module unlatching of low-light (level) environment.Auxiliary light compensating lamp Main Function in the present invention is in order to keep monitored picture to have preferably identifiability.In the present invention, if use auxiliary light compensating lamp usually can adopt lower power consumption or lower-cost light compensating lamp, its light filling angle is usually all more than or equal to any one primary light compensating lamp, because it only is the effect of auxiliary light filling.Certainly auxiliary light compensating lamp is not all to be necessary in all scenes, in some application scenarios, daylight or light may be arranged at any time, such as such application scenario, hotel lobby etc.
As previously mentioned, mobile object is the emphasis of being concerned about during monitoring is used as monitored object.When mobile object appears in the picture, mobile detection module can detect based on the algorithm of various maturations this mobile object and can obtain its profile information at least, and the specific implementation of the detection and Identification of mobile object can be implemented with reference to various prior aries.In case mobile object is detected, this moment, it just became the focal point of light filling among the present invention.Below be how to realize the such desirable light filling effect of Fig. 4 by better case introduction the present invention.
Please refer to the signal of Fig. 4-Fig. 6, suppose that monitored object is a human body.At first, image processing module determines that monitored mobile object two ends are at the vertical range of monitored picture vertical direction distance center point (fore-and-aft distance namely, can pixel be that unit calculates), be h1 and the h2 among Fig. 4, get h1 and h2 maximum Hmax=max (h1, h2), h among Fig. 4 represents half height of monitored picture, and namely effectively 1/2 of line number.Secondly, image processing module determines that monitored mobile object two ends are in the horizontal range of monitored picture horizontal direction distance center point, be w1 and the w2 among Fig. 6, get w1 and w2 maximum Wmax=max (w1, w2), w among Fig. 6 represents half width of monitored picture, namely in every row 1/2 of valid pixel.At last, as two right-angle sides of right-angled triangle, calculate hypotenuse P according to Pythagorean theorem with Hmax and Wmax, namely P square equal Hmax square with square sum of Wmax.Please refer to Fig. 7, take the picture center as the center of circle, P is that radius is justified, the occupied zone of this circle can substantially intactly be enclosed in mobile object wherein, circular as better light filling zone (or being called the light filling circle) with this, can realize good light filling effect, guarantee that at least the light filling energy is unlikely to waste, also can avoid the object part that exposure is arranged.In the present embodiment, P is exactly the described parameter that occupies, be called in the present embodiment and occupy radius, the computational methods of P have a lot, may not use said method, also can use other algorithms, as long as the P value of calculating can not cause having between the round edge of light filling and the mobile object edge large gap very.For instance, can use the simplest algorithm: P=Hmax+Wmax, usually need to satisfy PP square equal Hmax square with square sum of Wmax.
P is the described parameter that occupies in the present embodiment, and calculating matching module can go out desirable light filling angle a according to P and video camera visual angle calculation of parameter.Video camera has the visual angle of both direction, adopts which visual angle all can.Please refer to Fig. 8, take the visual angle of vertical direction as example, the visual field parameter of video camera comprises vertical angle of view parameter b and vertical length parameter (such as h), can learn according to the trigonometric function correlation theorem: Tg (b/2)/Tg (a/2)=h/P, because b, h and P get access to, therefore can calculate a.Same reason, if use vertical visual angle and vertically on length parameter can calculate equally described desirable light filling angle.Need to prove, because mobile object is may be in picture constantly mobile, so image processing module and calculate matching module and can periodically carry out the output that respective handling is come property performance period, the adjustment of final property performance period.
Calculating matching module needs to determine how light compensating lamp is adjusted, namely will export light filling adjustment order after determining desirable light filling angle.Light filling adjustment order is a widely definition, and they will be different and different with quantity because of the type of light compensating lamp.If the light filling angle of primary light compensating lamp is variable, the light filling adjustment order of output is to increase or dwindle the light filling angle so that the light filling angle of the light compensating lamp after adjusting equals or close to desirable light filling angle so.Also higher and optional product is also fewer to consider the light compensating lamp cost of present variable-angle, can select in another embodiment the primary light compensating lamp of a plurality of fixedly light filling angles.This moment, light filling adjustment order can be to open light filling angle and the immediate primary light compensating lamp of desirable light filling angle, perhaps open the most approaching and light filling angle of light filling angle and desired angle greater than the primary light compensating lamp of desirable light filling angle, or open the light filling angle and desirable light filling angle is the most approaching and differential seat angle 20% with any one interior primary light compensating lamp.This shows that in the present embodiment, the generation of light filling adjustment order can generate according to the rule that the developer presets, this default rule can be carried out various variations according to the needs of practical application.The light filling control module generates corresponding driving order and controls primary light compensating lamp after receiving light filling adjustment order.Light filling control module normally one or more driver realizes that it is matched with controlled primary light compensating lamp and auxiliary light compensating lamp usually.
In fact, in the above execution mode, can obtain a light filling adjustment scheme very approaching with desirable light filling.Yet in some cases, open primary light compensating lamp and still may need further adjustment afterwards.Such as, after opening, may cause primary light compensating lamp monitored object the problem of overexposure to occur, light filling effect sum may be excessive between light compensating lamp and the primary light compensating lamp because assist sometimes, but also might certain enhancing occur by extraneous light.Therefore among the present invention, the exposure tests module regularly detects the exposure quality of mobile object, if find overexposure then can export the light filling adjustment order that reduces light filling output, if find under-exposedly, then can corresponding output improve the light filling adjustment order of light filling output.Each raising or reduction can be carried out according to a fixed step size, also can estimate the adjusted value that reduces and improve according to preset algorithm.
The present invention detects mobile object, then calculate desirable light filling angle for mobile object, accordingly thereby primary light compensating lamp is adjusted the very targetedly light filling scheme that realizes, and in the preferred mode, can come light filling is carried out inching by exposure tests again, so that light filling efficient is greatly improved in terms of existing technologies.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, is equal to replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (8)
1. a light supplementing control device is applied on the rig camera, and wherein this rig camera comprises a primary light compensating lamp at least, and this device comprises mobile detection module, image processing module, calculating matching module and light filling control module, it is characterized in that:
Mobile detection module, for detection of the mobile object in the monitored picture, the notice image processing module is processed when detecting mobile object;
Image processing module is used for determining that mobile object is in the parameter that occupies of monitored picture;
Calculate matching module, be used for occupying parameter and the camera field of view calculation of parameter goes out desirable light filling angle according to described, and determine and output light filling adjustment order according to desirable light filling angle;
The light filling control module is used for according to light filling adjustment order at least one primary light compensating lamp being controlled to realize light filling to mobile object.
2. device as claimed in claim 1, it is characterized in that: this video camera also comprises auxiliary light compensating lamp, wherein the light filling angle of auxiliary light compensating lamp is not less than the light filling angle of any one primary light compensating lamp; This device also comprises:
Whether the luminance detection module is the low-light (level) environment for detection of the video camera current environment, and if it is the light filling adjustment order of auxiliary light compensating lamp is opened in output, and the light filling control module is opened auxiliary light compensating lamp according to this light filling adjustment order.
3. device as claimed in claim 1, it is characterized in that: described primary light compensating lamp is the light compensating lamp of light filling variable-angle, the light filling angle of light filling adjustment order for enlarging or dwindling primary light compensating lamp of described calculating matching module output.
4. device as claimed in claim 1, it is characterized in that, this rig camera comprises the primary light compensating lamp that two light filling angles are fixing at least, described calculating matching unit is used for using the rule of presetting to determine the primary light compensating lamp that needs are opened according to desirable light filling angle, and described light filling adjustment order is for opening the described primary light compensating lamp that needs unlatching.
5. device as claimed in claim 1 is characterized in that: the described parameter that occupies of the regular output of described graphics processing unit, the corresponding regular output light filling adjustment order of described calculating matching unit.
6. device as claimed in claim 1, it is characterized in that: described camera field of view parameter comprises the length parameter on visual angle parameter and this visual angle, described calculating matching unit uses triangulation to calculate described desirable light filling angle.
7. device as claimed in claim 1, it is characterized in that: the described parameter that occupies is for occupying radius P, the described radius P that occupies, P square more than or equal to Hmax square with Wmax square of sum, wherein Hmax be the mobile object two ends in the vertical range farthest of monitored picture vertical direction distance center point, Wmax is that the mobile object two ends are in the horizontal range farthest of monitored picture horizontal direction distance center point.
8. device as claimed in claim 1, it is characterized in that: this device also comprises the exposure tests module, be used for regularly detecting the exposure quality of mobile object, and close predetermined standard time output at the exposure non-conformity of quality and adjust the light filling adjustment of light filling output and order to described light filling control module.
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| CN201210570443.5A CN102984510B (en) | 2012-12-25 | 2012-12-25 | A kind of light supplement control method and device |
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| CN201210570443.5A CN102984510B (en) | 2012-12-25 | 2012-12-25 | A kind of light supplement control method and device |
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| CN102984510A true CN102984510A (en) | 2013-03-20 |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103488026A (en) * | 2013-09-05 | 2014-01-01 | 广东欧珀移动通信有限公司 | Method and system for regulating luminance of camera fill flash |
| CN105931468A (en) * | 2016-07-06 | 2016-09-07 | 成都市红亿科技有限公司 | Method for automatically regulating and controlling external fill light for license plate identification |
| CN106407950A (en) * | 2016-09-30 | 2017-02-15 | 维沃移动通信有限公司 | Facial information identification method and mobile terminal |
| CN106454147A (en) * | 2016-10-25 | 2017-02-22 | 浙江宇视科技有限公司 | Method and device for image collecting and light supplementing |
| CN106657916A (en) * | 2016-12-30 | 2017-05-10 | 武汉亿文光电设备有限公司 | Intelligent solar endurance monitoring method and system |
| CN107749920A (en) * | 2017-10-11 | 2018-03-02 | 奇酷互联网络科技（深圳）有限公司 | Brightness adjusting method, device and the mobile terminal of flashlight |
| CN108429885A (en) * | 2017-02-13 | 2018-08-21 | 杭州海康威视数字技术股份有限公司 | A kind of inter-linked controlling method, the apparatus and system of laser and video camera |
| WO2018218437A1 (en) * | 2017-05-27 | 2018-12-06 | 深圳配天智能技术研究院有限公司 | Method and system for illuminating target to be detected, and storage device |
| CN109474789A (en) * | 2018-10-30 | 2019-03-15 | 维沃移动通信（杭州）有限公司 | The field angle method of adjustment and mobile terminal of light compensating lamp |
| CN109981971A (en) * | 2017-12-28 | 2019-07-05 | 浙江宇视科技有限公司 | Flashlight effect removing method and device |
| CN111246119A (en) * | 2018-11-29 | 2020-06-05 | 杭州海康威视数字技术股份有限公司 | Camera and light supplement control method and device |
| CN111345031A (en) * | 2019-04-25 | 2020-06-26 | 深圳市大疆创新科技有限公司 | Unmanned aerial vehicle and shooting control method thereof |
| CN113225876A (en) * | 2021-05-28 | 2021-08-06 | 浙江大华技术股份有限公司 | Light supplementing method and device for monitoring equipment, storage medium and electronic equipment |
| CN113538928A (en) * | 2021-07-09 | 2021-10-22 | 浙江浩腾电子科技股份有限公司 | Adjustable light traffic technology monitoring imaging light supplementing device based on laser ranging |
| CN113824891A (en) * | 2020-06-19 | 2021-12-21 | 浙江宇视科技有限公司 | Camera and light supplementing method, device and medium thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103488026A (en) * | 2013-09-05 | 2014-01-01 | 广东欧珀移动通信有限公司 | Method and system for regulating luminance of camera fill flash |
| CN105931468A (en) * | 2016-07-06 | 2016-09-07 | 成都市红亿科技有限公司 | Method for automatically regulating and controlling external fill light for license plate identification |
| CN105931468B (en) * | 2016-07-06 | 2018-09-11 | 成都市红亿科技有限公司 | A kind of method for automatically regulating of the external light compensating lamp of Car license recognition |
| CN106407950A (en) * | 2016-09-30 | 2017-02-15 | 维沃移动通信有限公司 | Facial information identification method and mobile terminal |
| CN106454147B (en) * | 2016-10-25 | 2019-06-11 | 浙江宇视科技有限公司 | Image Acquisition light compensation method and device |
| CN106454147A (en) * | 2016-10-25 | 2017-02-22 | 浙江宇视科技有限公司 | Method and device for image collecting and light supplementing |
| CN106657916A (en) * | 2016-12-30 | 2017-05-10 | 武汉亿文光电设备有限公司 | Intelligent solar endurance monitoring method and system |
| CN108429885A (en) * | 2017-02-13 | 2018-08-21 | 杭州海康威视数字技术股份有限公司 | A kind of inter-linked controlling method, the apparatus and system of laser and video camera |
| WO2018218437A1 (en) * | 2017-05-27 | 2018-12-06 | 深圳配天智能技术研究院有限公司 | Method and system for illuminating target to be detected, and storage device |
| CN107749920A (en) * | 2017-10-11 | 2018-03-02 | 奇酷互联网络科技（深圳）有限公司 | Brightness adjusting method, device and the mobile terminal of flashlight |
| CN109981971A (en) * | 2017-12-28 | 2019-07-05 | 浙江宇视科技有限公司 | Flashlight effect removing method and device |
| CN109474789A (en) * | 2018-10-30 | 2019-03-15 | 维沃移动通信（杭州）有限公司 | The field angle method of adjustment and mobile terminal of light compensating lamp |
| CN109474789B (en) * | 2018-10-30 | 2020-09-08 | 维沃移动通信（杭州）有限公司 | Method for adjusting field angle of fill-in lamp and mobile terminal |
| CN111246119A (en) * | 2018-11-29 | 2020-06-05 | 杭州海康威视数字技术股份有限公司 | Camera and light supplement control method and device |
| CN111345031A (en) * | 2019-04-25 | 2020-06-26 | 深圳市大疆创新科技有限公司 | Unmanned aerial vehicle and shooting control method thereof |
| CN111345031B (en) * | 2019-04-25 | 2021-10-15 | 深圳市大疆创新科技有限公司 | Unmanned aerial vehicle and shooting control method thereof |
| CN113824891A (en) * | 2020-06-19 | 2021-12-21 | 浙江宇视科技有限公司 | Camera and light supplementing method, device and medium thereof |
| CN113824891B (en) * | 2020-06-19 | 2023-06-09 | 浙江宇视科技有限公司 | Camera, light supplementing method, device and medium thereof |
| CN113225876A (en) * | 2021-05-28 | 2021-08-06 | 浙江大华技术股份有限公司 | Light supplementing method and device for monitoring equipment, storage medium and electronic equipment |
| CN113538928A (en) * | 2021-07-09 | 2021-10-22 | 浙江浩腾电子科技股份有限公司 | Adjustable light traffic technology monitoring imaging light supplementing device based on laser ranging |
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