CN104253976A - Surveillance camera filtering system and method - Google Patents
Surveillance camera filtering system and method Download PDFInfo
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Abstract
The invention belongs to the technical field of electronic surveillance, and relates to a surveillance camera filtering system and method. According to the system and the method disclosed by the invention, a light filter is switched into an infrared light filter in the daytime, and infrared light can be filtered so as to solve the color cast problem caused by the infrared light in the day time; at night, since visible light brings severe interference to a driver at night, a visible light white-light lamp is forbidden to use for snapshotting, the light filter is switched into an all-pass light filter to allow as much light as possible to enter the surveillance camera; meanwhile, the white-light lamp which emits infrared light and ultraviolet light is used, clearer images can be snapshotted since the infrared light and the ultraviolet light have an obvious light filling effect under a condition of dark light at night, and a license number or specific surveillance characteristics can be better extracted.
Description
Technical field
The invention belongs to electronic monitoring technical field, particularly relate to a kind of CCTV camera filter system and method.
Background technology
Traffic monitoring is part very important in traffic system; online at huge road traffic; there is various traffic participant; situation on road is fast changing; usually traffic accident or accident can occur, can obtain road monitoring information timely and accurately, be strengthen road monitoring dynamics; improve traffic accident treatment efficiency, ensure the important measures of people's traffic safety.
Road monitoring camera is the core of traffic monitoring, is to obtain road and the most important link of vehicle condition, and how CCTV camera obtains image is clearly then the key point that CCTV camera plays a role.But CCTV camera is all weather operations, the light of each time period different situations is by the acquisition of effect diagram picture, such as, bright and clear during daytime, but Infrared can cause colour cast problem, dark during night, the image of acquisition is often gloomy fuzzy, therefore needs the change adapting to extraneous light to obtain image clearly.
Summary of the invention
Can not adapt to the change of extraneous light to obtain the problem of picture rich in detail for overcoming CCTV camera in correlation technique, the application provides a kind of CCTV camera filter system and method.
According to the first aspect of the application, a kind of CCTV camera filter system is provided, comprises:
Switch controller, described switch controller sends light filling signal according to the brightness value of the image of current shooting, and judge that current time is daytime or night according to the brightness value of the image of current shooting, and send different control signals according to the result judged, wherein, light filling signal comprises closedown light filling signal and opens light filling signal;
Optical-filter switcher, is connected with switch controller, is provided with infrared fileter and all-pass filter in optical-filter switcher, and switches infrared fileter or all-pass filter according to the control signal of switch controller;
Light compensating lamp, is connected with switch controller, and light compensating lamp sends Infrared and ultraviolet light, when receiving the unlatching light filling signal that switch controller sends, opens light filling, when receiving the closedown light filling signal that switch controller sends, closes light filling.
Wherein, switch controller comprises:
Image brightness values acquiring unit, for obtaining the brightness value of image;
Time judging unit, is connected with image brightness values acquiring unit, for the brightness value according to the image obtained, judges that current time is daytime or night;
Control signal transmitting element, is connected with time judging unit and image brightness values acquiring unit, and the brightness value for image sends light filling signal, and according to the judged result of time judging unit, sends different control signals.
Wherein, control signal transmitting element receives the image brightness values that image brightness values acquiring unit exports, and judges whether image brightness values is greater than light filling preset value, when image brightness values is greater than light filling preset value, sends close light filling signal to light compensating lamp.
Wherein, the brightness value of image compares with preset value by time judging unit, preset value comprise day preset value and night preset value, described compare for:
The same day, preset value was with when night, preset value was identical: when the brightness value of image is more than or equal to day preset value, judges that current time is daytime, when the brightness value of image is less than or equal to preset value at night, judge that current time is night,
When the same day, preset value was greater than preset value at night: when image brightness values is less than or equal to preset value at night, judge current as night; When image brightness values is increase tendency, image brightness values be greater than night preset value and be less than day preset value time, judge current as night; When image brightness values is equal to or greater than day preset value, judge current as daytime; When image brightness values is reduction trend, when image brightness values is less than day preset value and is greater than preset value at night, judge current as daytime.
Wherein, when the result that time judging unit judges be current as daytime time, control signal transmitting element sends infrared fileter switching signal to optical-filter switcher, after optical-filter switcher receives infrared fileter switching signal, the filter of CCTV camera is switched to infrared fileter, when the result that time judging unit judges be current as night time, control signal transmitting element sends all-pass filter switching signal to optical-filter switcher, after optical-filter switcher receives all-pass filter switching signal, the filter of CCTV camera is switched to all-pass filter.
Wherein, control signal transmitting element also for when the result that time judging unit judges be image brightness values be more than or equal to day preset value time, send and close light compensating lamp signal, after light compensating lamp receives described closedown light filling signal, close light filling.
Wherein, light compensating lamp is all band photoflash lamp, and its front end is provided with band pass filter, and band pass filter only transmits Infrared and ultraviolet light.
According to the second aspect of the application, CCTV camera filtering method is provided, comprises:
Obtain the brightness value of the image of current shooting;
Judge that current time is daytime or night according to the brightness value of image;
When current time is daytime, filter is switched to infrared fileter, when current time is night, filter is switched to all-pass filter;
Use light compensating lamp light filling, light compensating lamp sends Infrared and ultraviolet light.
Wherein, when the brightness value of image is more than or equal to light filling preset value, light compensating lamp closes light filling.
Wherein, judge that current time is daytime or night according to the brightness value of image, comprising:
The brightness value of movement images and preset value, preset value comprise day preset value and night preset value,
The same day, preset value was with when night, preset value was identical: when the brightness value of image is more than or equal to day preset value, judges that current time is daytime, when the brightness value of image is less than or equal to preset value at night, judge that current time is night,
When the same day, preset value was greater than preset value at night: when image brightness values is less than or equal to preset value at night, judge current as night; When image brightness values is increase tendency, image brightness values be greater than night preset value and be less than day preset value time, judge current as night; When image brightness values is equal to or greater than day preset value, judge current as daytime; When image brightness values is reduction trend, when image brightness values is less than day preset value and is greater than preset value at night, judge current as daytime.
Wherein, when image brightness values is equal to or greater than day preset value, light compensating lamp closes light filling.
The technical scheme that the application provides can comprise following beneficial effect: during daytime, and filter is switched to infrared fileter, can filtering Infrared, thus the colour cast problem that when solving daytime, Infrared causes, during night, because visible ray at night is larger to driver's interference ratio, forbid capturing with visible ray light compensating lamp, therefore filter is switched to all-pass sheet, light as much as possible is allowed to enter CCTV camera, use the light compensating lamp sending Infrared and ultraviolet light simultaneously, because ultraviolet light and Infrared have significant light filling effect, thus can when dark at night, capture image more clearly, to extract the number-plate number or specific monitoring features better, and when image brightness values is greater than certain value time, close light filling, avoid unnecessary light filling, both having prevented light from crossing heavy exposure causes image blurring excessively on the contrary, also light compensating lamp light filling number of times can be reduced, extend light compensating lamp useful life.
Should be understood that, it is only exemplary and explanatory that above general description and details hereinafter describe, and can not limit the application.
Accompanying drawing explanation
In order to be illustrated more clearly in the application or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, for those of ordinary skills, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of CCTV camera filter system shown in the embodiment of the present application.
Fig. 2 is the schematic flow sheet of a kind of CCTV camera filtering method shown in the embodiment of the present application.
Embodiment
Here will be described exemplary embodiment in detail, its sample table shows in the accompanying drawings.When description below relates to accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawing represents same or analogous key element.Execution mode described in following exemplary embodiment does not represent all execution modes consistent with the application.On the contrary, they only with as in appended claims describe in detail, the example of apparatus and method that some aspects of the application are consistent.
In order to complete understanding the application, refer to numerous concrete details in the following detailed description, but it should be appreciated by those skilled in the art that the application can realize without the need to these details.In an embodiment, be not described in detail known method, process, assembly and circuit, in order to avoid unnecessarily cause embodiment fuzzy.
In order to understand the application better, brief description is done to CCTV camera shooting process below:
CCTV camera in the course of the work, when the candid photograph scope having vehicle through CCTV camera, CCTV camera captures vehicle image, and the image of candid photograph, through CCTV camera dsp processor, can obtain the various parameters of image, carries out data processing and carry out necessary control.Usually light filling is needed during CCTV camera shooting, during daytime, the light that light compensating lamp sends and visible ray enter the camera lens of CCTV camera, during night through vehicle reflection, emit beam primarily of light compensating lamp, the light that light compensating lamp sends enters the camera lens of CCTV camera through the reflection of vehicle.The light that light compensating lamp sends and visible ray enter CCD (Charge-coupled Device through filter after camera lens, charge coupled cell) imageing sensor formation image, therefrom can extract the number-plate number of vehicle or specific monitoring features after being processed by image.
Fig. 1 is a kind of CCTV camera filter system structural representation shown in the embodiment of the present application.In a kind of possible execution mode, as shown in Figure 1, filter system comprises:
Switch controller U101, switch controller U101 sends light filling signal according to the brightness value of the image of current shooting, newly judge that current time is daytime or night according to the brightness value of the image of current shooting, and send different control signals according to the result judged, wherein, light filling signal comprises closedown light filling signal and opens light filling signal;
Optical-filter switcher U102, is connected with switch controller U101, is provided with infrared fileter and all-pass tablet filter in optical-filter switcher U102, and switches infrared fileter or all-pass filter according to the control signal of switch controller U101;
Light compensating lamp U103, light compensating lamp U103 is connected with switch controller U101, and light compensating lamp U103 sends Infrared and ultraviolet light, when receiving the unlatching light filling signal that switch controller U101 sends, opening light filling, when receiving the closedown light filling signal that switch controller sends, closing light filling.
Wherein, in a kind of possible execution mode, switch controller U101 can comprise:
Image brightness values acquiring unit, for obtaining the brightness value of image;
Time judging unit, is connected with image brightness values acquiring unit, for the brightness value according to the image obtained, judges that current time is daytime or night;
Control signal transmitting element, is connected with time judging unit and image brightness values acquiring unit, for sending light filling signal according to the brightness value of image, and according to the judged result of time judging unit, sends different control signals.
Wherein, image brightness values acquiring unit can be conventional image parameter acquiring unit, such as DSP (Digital Signal Processor, Digital Signal Processing) image parameter acquiring unit in processor, from the image information of CCTV camera shooting, obtain the brightness value of image.In the execution mode that another kind is possible, image brightness values acquiring unit also can for the independent unit be separated with dsp processor, and it is connected with ccd image sensor, by the brightness value of the image information acquisition image of ccd image sensor imaging.
Wherein, in a kind of possible execution mode, time judging unit receives the brightness value of the image that image brightness values acquiring unit exports, and is compared by the brightness value of image with preset value, preset value comprise day preset value and night preset value.Wherein, day preset value can be identical with preset value at night, also can be different.
Day preset value, with when night, preset value was identical, when the brightness value of image is more than or equal to day preset value, judges that current time is daytime, when the brightness value of image is less than or equal to preset value at night, judges that current time is night.
Day preset value is with when night, preset value was different, and the image brightness due to daytime can be greater than the image brightness at night, day preset value can be greater than preset value at night.When the same day, preset value was greater than preset value at night: when image brightness values is less than or equal to preset value at night, judge current as night; When image brightness values is increase tendency, image brightness values be greater than night preset value and be less than day preset value time, judge current as night; When image brightness values is equal to or greater than day preset value, judge current as daytime; When image brightness values is reduction trend, when image brightness values is less than day preset value and is greater than preset value at night, judge current as daytime.Wherein, judge that image brightness values is the method that increase tendency or reduction trend can adopt conventional numerical value growth trend judgement, such as, judge the magnitude relationship between present image brightness value and the previous image brightness values of present image brightness value, when present image brightness value is greater than the previous image brightness values of present image brightness value, image brightness values is increase tendency, when present image brightness value is less than the previous image brightness values of present image brightness value, image brightness values is reduction trend.
Day preset value and night preset value can be obtained by limited number of time experiment, preset and be stored in time judging unit.Limited number of time experiment can for gathering the image of a large amount of CCTV camera day and nights, by the brightness value contrast between different time image, obtain day preset value and night preset value, using day preset value and night preset value judge that the time of image taking is the cut off value at daytime or night as the brightness value by image.
Time judging unit is after obtaining the result judged, result is sent to control signal transmitting element in the mode of digital signal or analog signal, such as, time judging unit, as a part for dsp processor, when the brightness value of image is more than or equal to day preset value, judges that current time is daytime, 1 signal is sent to control signal transmitting element, when the brightness value of image is less than or equal to preset value at night, judges that current time is night, then send 0 signal to control signal transmitting element.
Wherein, control signal transmitting element can be conventional control signal transmitting element, after receiving the signal that time judging unit exports, sends different control signal to optical-filter switcher U102 according to signal.Control signal comprises infrared fileter switching signal and all-pass filter switching signal, and control signal can be digital signal or analog signal.Such as, in a kind of possible execution mode, when time judging unit judges current as daytime, export infrared fileter switching signal i.e. 1 signal to control signal transmitting element, 1 signal or high level is exported to optical-filter switcher U102 after control signal transmitting element receives 1 signal, optical-filter switcher U102 connects after U102 receives described 1 signal or high level, and filter is switched to infrared fileter; When time judging unit judges current as night, export all-pass filter switching signal i.e. 0 signal to control signal transmitting element, 0 signal or low level is exported to optical-filter switcher U102 after control signal transmitting element receives 0 signal, filter is switched to all-pass filter after receiving described 0 signal or low level by optical-filter switcher U102.
Simultaneously, control signal transmitting element is connected with image brightness values acquiring unit, receive the image brightness values that image brightness values acquiring unit exports, and judge whether image brightness values is more than or equal to light filling preset value, when image brightness values is more than or equal to light filling preset value, sends to light compensating lamp and close light filling signal, correspondingly, when image brightness values is less than light filling preset value, sends to light compensating lamp and open light filling signal.Wherein light filling preset value can be obtained by limited number of time experiment, such as obtain daytime visible ray the most by force or stronger time take the multiple brightness value of image and definition that obtain, therefrom choose image brightness values corresponding when definition is enough to clear accurate extraction ticket or special characteristic as light filling preset value.When brightness is more than or equal to light filling preset value, represent that extraneous light enough obtains enough images clearly, do not need light filling, therefore can send to light compensating lamp and close light filling signal, after light compensating lamp receives and closes light filling signal, close light filling, thus reduce light filling number of times, extend the light compensating lamp life-span, correspondingly, light compensating lamp opens light filling after receiving and opening light filling signal.Light filling signal can be similar with control signal, for digital signaling zero or 1, or be analog signal (high level, low level), such as when according to the image brightness values received, control signal transmitting element judges that current image brightness values is more than or equal to light filling preset value, digital signaling zero or low level is sent to light compensating lamp, when corresponding light compensating lamp receives digital signaling zero or low level, close light filling, correspondingly, when current image brightness values is less than light filling preset value, digital signal 1 or high level is sent to light compensating lamp, when corresponding light compensating lamp receives digital signal 1 or high level, close light filling.
In the execution mode that another kind is possible, control signal transmitting element also for when the result that time judging unit judges be image brightness values be more than or equal to day preset value time, send and close light compensating lamp signal, after light compensating lamp receives described closedown light filling signal, close light filling.Wherein, when the same day, preset value equaled preset value at night, image brightness values was more than or equal to a day preset value, when namely the time period is daytime, made light compensating lamp close light filling; When the same day, preset value was greater than preset value at night, image brightness values was more than or equal to a day preset value, and namely the time period is daytime, and non-image brightness value is the time period of reduction trend, made light compensating lamp close light filling.This execution mode can omit the judgement to the brightness value of image and light filling preset value in control signal transmitting element, but under normal circumstances, daytime visible ray the most by force or to compare whole day time period short the stronger time period, therefore in this execution mode, the time of light compensating lamp not light filling is long, better can extend the life-span of light compensating lamp, but light filling effect reduces.
Wherein, switch controller U101 as a part for dsp processor, can realize the function of self.In optical-filter switcher U102, the position of filter in CCTV camera is identical with the position of conventional filter, correspondingly, between the camera lens of optical-filter switcher U102 installation and CCTV camera and ccd image sensor.Optical-filter switcher U102 structure is identical with conventional camera optics eyeglass switching device shifter structure, the same with the camera optics eyeglass switching device shifter of routine, can receive digital controlled signal or analog control signal.
In the CCTV camera filter system of the application, light compensating lamp U103 can be all band photoflash lamp, and its front end is provided with band pass filter, and band pass filter only transmits Infrared and ultraviolet light.All band shining point has wider wave band sensitive range, is conducive to improving image quality.Light compensating lamp U103 is connected with stripping and slicing controller U101, when switch controller judges that current image brightness values is more than or equal to light filling preset value or day preset value (such as, when control signal transmitting element in switch controller judges that current image brightness values is more than or equal to light filling preset value), send and close light filling signal to light compensating lamp, light compensating lamp closes light filling after receiving and closing light filling signal, when switch controller judges that current image brightness values is less than light filling preset value or day preset value (such as, when control signal transmitting element in switch controller judges that current image brightness values is less than light filling preset value), send and open light filling signal to light compensating lamp, light compensating lamp opens light filling after receiving and opening light filling signal.The working method of light compensating lamp is identical with the working method of conventional light compensating lamp, can receive digital controlled signal or analog control signal.Light compensating lamp 103 also can not be connected with switch controller, is controlled by CCTV camera chip DSP, starts light filling when each photographic images of CCTV camera.By arranging band pass filter in the front end of light compensating lamp U103, the light that light compensating lamp U103 sends is after band pass filter filters, send Infrared and ultraviolet light, the Infrared that the object reflection ambient light be taken and light compensating lamp U103 send and ultraviolet light, ambient light, Infrared and ultraviolet light enter optical-filter switcher U102 through camera lens, then after optical-filter switcher U102 filters, enter ccd image sensor formation image.
The CCTV camera filter system that the embodiment of the present application provides, by obtaining the brightness value of the image of current shooting, judge that current time is daytime or night, when current time is daytime, filter is switched to infrared fileter, filtering Infrared, the colour cast that when avoiding daytime, Infrared causes; When current time is night, filter is switched to all-pass sheet, light as much as possible is allowed to enter CCTV camera, use the light compensating lamp sending Infrared and ultraviolet light simultaneously, both avoided using visible ray light filling to impact driver, make use of again ultraviolet light and the significant light filling effect of Infrared, when dark at night, capture image more clearly, to extract the number-plate number or specific monitoring features better.Simultaneously when image brightness values is greater than certain value time, close light filling, avoid unnecessary light filling, both prevented light from crossing heavy exposure and caused image blurring excessively on the contrary, also can reduce light compensating lamp light filling number of times, extend light compensating lamp useful life.
CCTV camera filter system in the application, the camera lens of CCTV camera preferably can make Infrared and the larger optical filtering camera lens of ultraviolet light throughput, and when making night, CCD can receive more light, is conducive to obtaining image more clearly.
The application is further illustrated below, with the principle and the application that make those skilled in the art understand the application better with an application case of the application.
During daytime, when the candid photograph scope having a car through CCTV camera, CCTV camera captures vehicle image, the switch controller of the image captured in dsp processor obtains the brightness value of image, and by the brightness value of image with day preset value and night preset value compare, such as, the brightness value of the vehicle image captured is 80, day preset value is 60, brightness value due to image is greater than a day preset value, therefore switch controller judges current as daytime, switch controller sends infrared fileter switching signal to optical-filter switcher, optical-filter switcher receives described signal, filter is switched to infrared fileter, light compensating lamp closes light filling simultaneously.During night, when the candid photograph scope having a car through CCTV camera, CCTV camera captures vehicle image, the switch controller of the image captured in dsp processor obtains the brightness value of image, and by the brightness value of image with day preset value and night preset value compare, such as, the brightness value of the vehicle image captured is 30, night, preset value was 40, because image brightness values is less than a day preset value, therefore switch controller judges current as night, switch controller sends all-pass filter switching signal to optical-filter switcher, optical-filter switcher receives described signal, filter is switched to all-pass filter, light compensating lamp opens light filling simultaneously, the light that light compensating lamp sends enters camera lens through vehicle reflection, optical-filter switcher is entered again after camera lens, the all-pass filter of optical-filter switcher all passes through by light, when without visible ray, enter ccd image sensor by Infrared and ultraviolet light and form image clearly, image can extract the number-plate number of vehicle after treatment.
For convenience of description, various unit is divided into describe respectively with function when describing above system.Certainly, the function of each unit can be realized in same or multiple software and/or hardware when implementing of the present invention.
Fig. 2 is the schematic flow sheet of a kind of CCTV camera filtering method shown in the embodiment of the present application.In a kind of possible execution mode, as shown in Figure 2, described method comprises:
In step s 201, the brightness value of the image of current shooting is obtained;
In step S202, judge that current time is daytime or night according to the brightness value of described image;
In step S203, according to the judged result of step S102, when current time is daytime, filter is switched to infrared fileter;
In step S204, according to the judged result of step S102, when current time is night, filter is switched to all-pass filter;
In step S205, use light compensating lamp light filling, described light compensating lamp sends Infrared and ultraviolet light.
Wherein, in a kind of possible execution mode, judge that current time is daytime or night according to the brightness value of described image, comprising:
The brightness value of more described image and preset value, preset value comprise day preset value and night preset value, wherein, day preset value can be identical with preset value at night, also can be different.
Day preset value, with when night, preset value was identical, when the brightness value of image is more than or equal to day preset value, judges that current time is daytime, when the brightness value of image is less than or equal to preset value at night, judges that current time is night.
Day preset value is with when night, preset value was different, and the image brightness due to daytime can be greater than the image brightness at night, day preset value can be greater than preset value at night.When the same day, preset value was greater than preset value at night: when image brightness values is less than or equal to preset value at night, judge current as night; When image brightness values is increase tendency, image brightness values be greater than night preset value and be less than day preset value time, judge current as night; When image brightness values is equal to or greater than day preset value, judge current as daytime; When image brightness values is reduction trend, when image brightness values is less than day preset value and is greater than preset value at night, judge current as daytime.Wherein, judge that image brightness values is the method that increase tendency or reduction trend can adopt conventional numerical value growth trend judgement, such as, judge the magnitude relationship between present image brightness value and the previous image brightness values of present image brightness value, when present image brightness value is greater than the previous image brightness values of present image brightness value, image brightness values is increase tendency, when present image brightness value is less than the previous image brightness values of present image brightness value, image brightness values is reduction trend.
Wherein, when time judging unit judges current as daytime, filter is switched to infrared fileter; When time judging unit judges current as night, filter is switched to all-pass filter.
Wherein, light compensating lamp can be all band photoflash lamp, and its front end is provided with band pass filter, and band pass filter only transmits Infrared and ultraviolet light, and therefore light compensating lamp only carries out infrared light filling and ultraviolet light filling.
The CCTV camera filtering method that the application provides, during daytime, switches to infrared fileter by filter, can filtering Infrared, thus the colour cast problem that when solving daytime, Infrared causes; During night, because visible ray at night is larger to driver's interference ratio, forbid capturing with visible ray light compensating lamp, therefore filter is switched to all-pass sheet, allow light as much as possible to enter CCTV camera, use the light compensating lamp sending Infrared and ultraviolet light, because ultraviolet light and Infrared have significant light filling effect simultaneously, thus when dark at night, image more clearly can be captured.
Wherein, in a kind of possible execution mode, when the brightness value of current image is more than or equal to light filling preset value, light compensating lamp closes light filling, correspondingly, when the brightness value of image is less than light filling preset value, sends open light filling signal to light compensating lamp.Wherein light filling preset value can be obtained by limited number of time experiment, such as obtain daytime visible ray the most by force or stronger time take the multiple brightness value of image and definition that obtain, therefrom choose the brightness value of image corresponding when definition is enough to clear accurate extraction ticket or special characteristic as light filling preset value.When brightness is more than or equal to light filling preset value, represents that extraneous light enough obtains enough images clearly, do not need light filling, therefore can send to light compensating lamp and close light filling signal, thus reduce light filling number of times, extend the light compensating lamp life-span.
In the execution mode that another kind is possible, when the brightness value of image is more than or equal to day preset value, sends and close light compensating lamp signal, after light compensating lamp receives described closedown light filling signal, close light filling.Wherein, when the same day, preset value equaled preset value at night, the brightness value of image was more than or equal to a day preset value, when namely the time period is daytime, made light compensating lamp close light filling; When the same day, preset value was greater than preset value at night, image brightness values was more than or equal to a day preset value, and namely the time period is daytime, and non-image brightness value is the time period of reduction trend, made light compensating lamp close light filling.
By the description of above embodiment of the method, those skilled in the art can be well understood to the mode that the application can add required general hardware platform by software and realize, hardware can certainly be passed through, but in a lot of situation, the former is better execution mode.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, and be stored in a storage medium, comprise all or part of step of some instructions in order to make a smart machine perform method described in each embodiment of the present invention.And aforesaid storage medium comprises: the various media that can store data and program code such as read-only memory (ROM), random access memory (RAM), magnetic disc or CDs.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, between each embodiment identical similar part mutually see, what each embodiment stressed is the difference with other embodiments, and relevant part illustrates see the part of embodiment of the method.System and method embodiment described above is only schematic, the wherein said unit illustrated as separating component or can may not be and physically separates, parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.Those of ordinary skill in the art, when not paying creative work, are namely appreciated that and implement.
It should be noted that, in this article, such as " first " with " second " relational terms to wait and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply these entities or there is relation or the backward of any this reality between operating.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
The above is only the embodiment of the application, those skilled in the art is understood or realizes the application.To be apparent to one skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from the spirit or scope of the application, can realize in other embodiments.Therefore, the application can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (11)
1. a CCTV camera filter system, is characterized in that, comprising:
Switch controller, described switch controller sends light filling signal according to the brightness value of the image of current shooting, and judge that current time is daytime or night according to the brightness value of the image of current shooting, and send different control signals according to the result judged, wherein, light filling signal comprises closedown light filling signal and opens light filling signal;
Optical-filter switcher, is connected with switch controller, is provided with infrared fileter and all-pass filter in optical-filter switcher, and switches infrared fileter or all-pass filter according to the control signal of switch controller;
Light compensating lamp, is connected with switch controller, and light compensating lamp sends Infrared and ultraviolet light, when receiving the unlatching light filling signal that switch controller sends, opens light filling, when receiving the closedown light filling signal that switch controller sends, closes light filling.
2. CCTV camera filter system according to claim 1, is characterized in that switch controller comprises: image brightness values acquiring unit, for obtaining the brightness value of image;
Time judging unit, is connected with image brightness values acquiring unit, for the brightness value according to the image obtained, judges that current time is daytime or night;
Control signal transmitting element, is connected with time judging unit and image brightness values acquiring unit, for sending light filling signal according to the brightness value of image, and according to the judged result of time judging unit, sends different control signals.
3. CCTV camera filter system according to claim 2, it is characterized in that, control signal transmitting element receives the image brightness values that image brightness values acquiring unit exports, and judge whether image brightness values is greater than light filling preset value, when image brightness values is greater than light filling preset value, sends to light compensating lamp and close light filling signal.
4. CCTV camera filter system according to claim 2, it is characterized in that, time judging unit is used for the brightness value of image to compare with preset value, judges that current time is daytime or night, preset value comprise day preset value and night preset value, described compare for:
The same day, preset value was with when night, preset value was identical: when the brightness value of image is more than or equal to day preset value, judges that current time is daytime, when the brightness value of image is less than or equal to preset value at night, judge that current time is night,
When the same day, preset value was greater than preset value at night: when image brightness values is less than or equal to preset value at night, judge current as night; When image brightness values is increase tendency, image brightness values be greater than night preset value and be less than day preset value time, judge current as night; When image brightness values is equal to or greater than day preset value, judge current as daytime; When image brightness values is reduction trend, when image brightness values is less than day preset value and is greater than preset value at night, judge current as daytime.
5. CCTV camera filter system according to claim 4, it is characterized in that, when the result that time judging unit judges be current as daytime time, control signal transmitting element sends infrared fileter switching signal to optical-filter switcher, after optical-filter switcher receives infrared fileter switching signal, the filter of CCTV camera is switched to infrared fileter, when the result that time judging unit judges be current as night time, control signal transmitting element sends all-pass filter switching signal to optical-filter switcher, after optical-filter switcher receives all-pass filter switching signal, the filter of CCTV camera is switched to all-pass filter.
6. CCTV camera filter system according to claim 4, it is characterized in that, control signal transmitting element also for when the result that time judging unit judges be image brightness values be more than or equal to day preset value time, send and close light compensating lamp signal, after light compensating lamp receives described closedown light filling signal, close light filling.
7., according to the arbitrary described CCTV camera filter system of claim 1-6, it is characterized in that, light compensating lamp is all band photoflash lamp, and its front end is provided with band pass filter, and band pass filter only transmits Infrared and ultraviolet light.
8. a CCTV camera filtering method, is characterized in that, comprising:
Obtain the brightness value of the image of current shooting;
Judge that current time is daytime or night according to the brightness value of image;
When current time is daytime, filter is switched to infrared fileter, when current time is night, filter is switched to all-pass filter;
Use light compensating lamp light filling, light compensating lamp sends Infrared and ultraviolet light.
9. CCTV camera filtering method according to claim 8, is characterized in that, also comprise: when the brightness value of image is more than or equal to light filling preset value, and light compensating lamp closes light filling.
10. CCTV camera filtering method according to claim 8, is characterized in that, judges that current time is daytime or night, comprising according to the brightness value of image:
The brightness value of movement images and preset value, preset value comprise day preset value and night preset value,
The same day, preset value was with when night, preset value was identical: when the brightness value of image is more than or equal to day preset value, judges that current time is daytime, when the brightness value of image is less than or equal to preset value at night, judge that current time is night,
When the same day, preset value was greater than preset value at night: when image brightness values is less than or equal to preset value at night, judge current as night; When image brightness values is increase tendency, image brightness values be greater than night preset value and be less than day preset value time, judge current as night; When image brightness values is equal to or greater than day preset value, judge current as daytime; When image brightness values is reduction trend, when image brightness values is less than day preset value and is greater than preset value at night, judge current as daytime.
11. CCTV camera filtering methods according to claim 10, is characterized in that, also comprise: when image brightness values is equal to or greater than day preset value, light compensating lamp closes light filling.
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104702832A (en) * | 2015-03-31 | 2015-06-10 | 刘若琨 | Imaging method and device for security prevention monitoring shooting of automobile |
| CN105554409A (en) * | 2015-12-16 | 2016-05-04 | 浙江宇视科技有限公司 | Method and device for detecting day-night switching |
| 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 |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101587622A (en) * | 2009-06-18 | 2009-11-25 | 任芳 | Forest rocket detection and recognition methods and equipment based on video image intelligent analysis |
| CN101778220A (en) * | 2010-03-01 | 2010-07-14 | 华为终端有限公司 | Method for automatically switching over night scene mode and image pickup device |
| CN201628109U (en) * | 2010-02-08 | 2010-11-10 | 东北农业大学 | Light source system for plant growth |
| CN102231797A (en) * | 2011-06-22 | 2011-11-02 | 深圳中兴力维技术有限公司 | Day and night image pick-up device, day and night switching method used for same |
| CN202109287U (en) * | 2011-06-02 | 2012-01-11 | 浙江农林大学 | Four-color LED light-supplement lamp band capable of adjusting the red light illumination intensity |
| US20120026325A1 (en) * | 2010-07-29 | 2012-02-02 | Logitech Europe S.A. | Optimized movable ir filter in cameras |
| US20120086849A1 (en) * | 2010-09-22 | 2012-04-12 | Panasonic Corporation | Camera device |
| CN102724404A (en) * | 2012-06-08 | 2012-10-10 | 北京大恒图像视觉有限公司 | All weather exposure gaining automatic regulation method and system |
| CN102946517A (en) * | 2012-11-20 | 2013-02-27 | 浙江银江智慧交通集团有限公司 | Intelligent control strobe light supplementing method and device of camera |
| CN203706278U (en) * | 2014-02-27 | 2014-07-09 | 张亚鹏 | Light compensatingdevice of automobile data recorder |
-
2014
- 2014-09-03 CN CN201410446187.8A patent/CN104253976A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101587622A (en) * | 2009-06-18 | 2009-11-25 | 任芳 | Forest rocket detection and recognition methods and equipment based on video image intelligent analysis |
| CN201628109U (en) * | 2010-02-08 | 2010-11-10 | 东北农业大学 | Light source system for plant growth |
| CN101778220A (en) * | 2010-03-01 | 2010-07-14 | 华为终端有限公司 | Method for automatically switching over night scene mode and image pickup device |
| US20120026325A1 (en) * | 2010-07-29 | 2012-02-02 | Logitech Europe S.A. | Optimized movable ir filter in cameras |
| US20120086849A1 (en) * | 2010-09-22 | 2012-04-12 | Panasonic Corporation | Camera device |
| CN202109287U (en) * | 2011-06-02 | 2012-01-11 | 浙江农林大学 | Four-color LED light-supplement lamp band capable of adjusting the red light illumination intensity |
| CN102231797A (en) * | 2011-06-22 | 2011-11-02 | 深圳中兴力维技术有限公司 | Day and night image pick-up device, day and night switching method used for same |
| CN102724404A (en) * | 2012-06-08 | 2012-10-10 | 北京大恒图像视觉有限公司 | All weather exposure gaining automatic regulation method and system |
| CN102946517A (en) * | 2012-11-20 | 2013-02-27 | 浙江银江智慧交通集团有限公司 | Intelligent control strobe light supplementing method and device of camera |
| CN203706278U (en) * | 2014-02-27 | 2014-07-09 | 张亚鹏 | Light compensatingdevice of automobile data recorder |
Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104702832A (en) * | 2015-03-31 | 2015-06-10 | 刘若琨 | Imaging method and device for security prevention monitoring shooting of automobile |
| CN105554409A (en) * | 2015-12-16 | 2016-05-04 | 浙江宇视科技有限公司 | Method and device for detecting day-night switching |
| CN105554409B (en) * | 2015-12-16 | 2018-01-16 | 浙江宇视科技有限公司 | A kind of method and apparatus of change detection round the clock |
| CN106101546B (en) * | 2016-06-30 | 2019-04-05 | Oppo广东移动通信有限公司 | A kind of laser focusing sensor control method, mobile terminal and storage medium |
| CN106101546A (en) * | 2016-06-30 | 2016-11-09 | 广东欧珀移动通信有限公司 | A kind of laser focusing sensor control method and mobile terminal |
| 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 |
| CN106231179A (en) * | 2016-07-29 | 2016-12-14 | 浙江大华技术股份有限公司 | One the most double optical-filter switcher changing method and device |
| US11153505B2 (en) | 2016-07-29 | 2021-10-19 | Zhejiang Dahua Technology Co., Ltd. | Systems and methods for changing operation modes of the optical filter of an imaging device |
| US10686998B2 (en) | 2016-07-29 | 2020-06-16 | Zhejiang Dahua Technology Co., Ltd. | Systems and methods for changing operation modes of the optical filter of an imaging device |
| CN106231179B (en) * | 2016-07-29 | 2019-05-24 | 浙江大华技术股份有限公司 | A kind of day and night double optical-filter switcher switching methods and device |
| CN107483811A (en) * | 2017-07-28 | 2017-12-15 | 广东欧珀移动通信有限公司 | Imaging method and electronic installation |
| CN107370956A (en) * | 2017-08-21 | 2017-11-21 | 深圳市天视通电子科技有限公司 | A kind of method and starlight video camera for realizing the switching of starlight video camera diurnal pattern |
| CN108737741A (en) * | 2017-12-21 | 2018-11-02 | 西安工业大学 | A kind of auto Anti-Blooming system of night Computer Vision |
| WO2019127176A1 (en) * | 2017-12-28 | 2019-07-04 | 天彩电子（深圳）有限公司 | Method and device for realizing ir-cut state feedback on the basis of infrared luminance change |
| CN108429892A (en) * | 2018-05-10 | 2018-08-21 | 杭州雄迈集成电路技术有限公司 | One kind being based on RGB sensor diurnal pattern automatic switching methods |
| CN110691177A (en) * | 2018-07-05 | 2020-01-14 | 杭州海康威视数字技术股份有限公司 | Multi-lens camera |
| CN109819175A (en) * | 2019-01-23 | 2019-05-28 | 中国科学院长春光学精密机械与物理研究所 | A kind of photographic method and camera arrangement |
| CN112135012A (en) * | 2019-06-25 | 2020-12-25 | 杭州海康威视数字技术股份有限公司 | Image acquisition device and image acquisition method |
| CN112135012B (en) * | 2019-06-25 | 2022-02-11 | 杭州海康威视数字技术股份有限公司 | Image acquisition device and image acquisition method |
| WO2021208789A1 (en) * | 2020-04-14 | 2021-10-21 | 华为技术有限公司 | Photographing method and electronic device |
| CN113406661A (en) * | 2021-04-25 | 2021-09-17 | 中国科学院精密测量科学与技术创新研究院 | Multichannel atomic light filtering day and night automatic switching device |
| CN113382164A (en) * | 2021-05-27 | 2021-09-10 | 北京优彩科技有限公司 | Image acquisition method and device |
| CN114842578A (en) * | 2022-04-26 | 2022-08-02 | 深圳市凯迪仕智能科技有限公司 | Intelligent lock, shooting control method and related device |
| CN114842578B (en) * | 2022-04-26 | 2024-04-05 | 深圳市凯迪仕智能科技股份有限公司 | Intelligent lock, shooting control method and related device |
| CN115134524A (en) * | 2022-06-24 | 2022-09-30 | 深圳市聚芯影像有限公司 | Intelligent vehicle-mounted camera control system based on Internet of things |
| CN115134524B (en) * | 2022-06-24 | 2023-08-18 | 深圳市聚芯影像有限公司 | Intelligent vehicle-mounted camera control system based on Internet of things |
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