CN109005365A - A kind of method and device that control light compensating lamp is opened - Google Patents
A kind of method and device that control light compensating lamp is opened Download PDFInfo
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- CN109005365A CN109005365A CN201810962865.4A CN201810962865A CN109005365A CN 109005365 A CN109005365 A CN 109005365A CN 201810962865 A CN201810962865 A CN 201810962865A CN 109005365 A CN109005365 A CN 109005365A
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- compensating lamp
- light compensating
- light
- opened
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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
- H04N23/73—Circuitry for compensating brightness variation in the scene by influencing the exposure time
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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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Abstract
This application discloses a kind of method and devices that control light compensating lamp is opened, this method comprises: mending optical control signal to light compensating lamp transmission, wherein the unlatching that the benefit optical control signal is used to control the light compensating lamp continues the duration of light filling with the light compensating lamp；The feedback signal that feedback device is sent is received, the time delay that the light compensating lamp is opened is determined based on the feedback signal and the benefit optical control signal；The time for mending optical control signal transmission is adjusted based on the time delay that the light compensating lamp is opened and the light compensating lamp continues the duration of light filling, so that image light compensating lamp in exposure is able to carry out light filling.Solving leads to the technical problem of low quality of image since image exposure is not thorough in the prior art.
Description
Technical field
This application involves technical field of image processing more particularly to a kind of method and devices that control light compensating lamp is opened.
Background technique
Camera is during taking pictures, and when ambient light is darker, in order to improve the quality of shooting image, needs to pass through frequency
Flashing light carries out automatic exposure, in the prior art, stroboscopic lamp by image sensor exposure and light compensating lamp light filling synchronize come
Realization camera is during taking pictures when automatic exposure, i.e. image sensor exposure, and light compensating lamp carries out light filling, in image sensing
When device does not expose, light compensating lamp is without light filling, still, during actual exposure, image sensor exposure and light compensating lamp
Light filling is difficult to accomplish to synchronize.Light filling is sufficient when therefore, to guarantee image sensor exposure, and the time of light compensating lamp light filling is usually arranged
It is fixed greater than the time of image sensor exposure, and by the timing of light compensating lamp light filling.
After light compensating lamp light filling timing is fixed, the time for the control signal that main control device is sent also is determined that, due to
It is influenced by light filling lamp drive circuit, light compensating lamp, environment, light compensating lamp receives the control signal of main control device transmission to light compensating lamp
There are certain delays between unlatching, and image sensor exposure synchronous cannot be carried out with light compensating lamp light filling, so as to cause image exposure
Light is not thorough, and obtained picture quality is not high.
Summary of the invention
The application provides a kind of method and device that control light compensating lamp is opened, to solve in the prior art since image exposes
Light is not thorough the technical problem for causing picture quality not high.
In a first aspect, the application provides a kind of method that control light compensating lamp is opened, this method comprises:
Step S1, main control device send to light compensating lamp and mend optical control signal, wherein the benefit optical control signal is for controlling
The unlatching of the light compensating lamp and the light compensating lamp continue the duration of light filling；
Step S2 receives the feedback signal that feedback device is sent, based on the feedback signal and the benefit optical control signal
Determine the time delay that the light compensating lamp is opened；
Step S3 adjusts time and described that the benefit optical control signal is sent based on the time delay that the light compensating lamp is opened
Light compensating lamp continues the duration of light filling, so that image light compensating lamp in exposure is able to carry out light filling.
In scheme provided by the embodiments of the present application, determines and mend by mending the time delay between optical control signal and feedback signal
The time delay that light lamp is opened, and then held by the time delay of light compensating lamp light filling come the time and light compensating lamp sent to light compensating lamp control signal
Continuous duration is adjusted, and avoids the time delay opened due to light compensating lamp, image sensor exposure is asynchronous with light compensating lamp light filling, leads
Cause picture quality not high.
Optionally, the feedback device, comprising: imaging sensor or light-sensitive device.
Optionally, when the feedback device is described image sensor, step S2 includes:
Step S21 sends spectrum assignment letter to described image sensor when sending benefit optical control signal to light compensating lamp
Number, wherein the exposure control signal is used to control described image sensor with maximum frame per second, successive suitable based on the time for exposure
Tri- frame image of sequence, at least continuous exposure image A, image B and image C；
Step S22 determines the brightness value of each frame image in described image A, image B and image C, and is based on the brightness
Value determines the time delay that the light compensating lamp is opened.
Optionally, step S22 includes:
Step S221, if the difference of at least brightness of a frame image is big in described image B and adjacent two field pictures A and image C
In first threshold, it is determined that the light compensating lamp described image B expose when open, based on it is described benefit optical control signal send when
Between and time for opening of the light compensating lamp determine the range of time delay that the light compensating lamp is opened, and the range based on the time delay
Determine the time delay that the light compensating lamp is opened.
In scheme provided by the embodiments of the present application, based at least one frame of brightness in described image B and image A and image C
The difference of value come determine light compensating lamp open time, and pass through light compensating lamp open time and light compensating lamp control signal send time
Come determine light compensating lamp open time delay range, and then go out determine light compensating lamp open time delay.Therefore, pass through the image after exposure
Brightness value come determine light compensating lamp open time, can accurately determine light compensating lamp open time delay, for adjustment light filling control letter
Number transmission time and light compensating lamp continue the duration of light filling and accurate foundation be provided.
Optionally, step S221 includes:
Step S2211, if the difference of the brightness of described image B and described image A and described image C is both greater than first threshold
Value, it is determined that the light compensating lamp is opened within the time that described image B expose, be based on described image B exposure time range and
The time that the light compensating lamp control signal is sent determines the range for the time delay that the light compensating lamp is opened, and based on the time delay
Range determines the time delay that the light compensating lamp is opened.
Optionally, step S221 further include:
Step S2212, if the difference of the brightness of any one frame image is big in described image B and described image A and described image C
In the first threshold, it is determined that the light compensating lamp is opened before described image B exposure or when exposing, and is based on described image B
The time of the time opened and light compensating lamp control signal transmission is exposed to determine the model of the time delay of the light compensating lamp unlatching
It encloses, and the range based on the time delay determines the time delay that the light compensating lamp is opened.
In scheme provided by the embodiments of the present application, by the brightness between image B and adjacent two field pictures A and image C it
Difference reduces the time range of light compensating lamp unlatching to determine the time range of light compensating lamp unlatching, and then reduces the light compensating lamp
The time delay range of unlatching, so that the time delay that the light compensating lamp being calculated is opened is more accurate.
Optionally, when the feedback device is the light-sensitive device, step S2 includes:
Step S23, main control device receive the ambient lighting signal that the light-sensitive device is sent；
Step S24, main control device determine that intensity of illumination variation is greater than corresponding to second threshold in the ambient lighting signal
Time point；
Step S25, main control device is based on the time point and sends the time point for mending optical control signal, determines light filling
The time delay that lamp is opened.
In scheme provided by the embodiments of the present application, the luminance signal in environment is obtained by light-sensitive device, is based on the light
According to signal determine intensity of illumination variation be greater than second threshold corresponding to time point, the time point be light compensating lamp open when
Between, the time of optical control signal is mended based on the time point and transmission, accurately determines the time delay that light compensating lamp is opened, for adjustment
The duration that the time and light compensating lamp for mending the transmission of optical control signal continue light filling provides accurate foundation.
Optionally, when the feedback device is the light-sensitive device, before step S3, further includes:
Step S4, main control device send at least two light fillings to light compensating lamp and control signal sequence, and receive feedback device hair
At least two feedback signals sent；
Step S5, main control device is based at least two feedback signal and at least two light filling controls signal sequence
Determine the range for the time delay that the light compensating lamp is opened；
Step S6, the range for the time delay that main control device is opened based on the light compensating lamp, determine that the light compensating lamp opens when
The maximum value and minimum value prolonged.
In scheme provided by the embodiments of the present application, optical control signal is mended by repeatedly sending to light compensating lamp, and pass through feedback
Device obtains multiple feedback signals, determines that light compensating lamp opens the range of time delay based on the benefit optical control signal and feedback signal,
Time and light compensating lamp of the range for the time delay opened based on the light compensating lamp so as to main control device to the transmission for mending optical control signal
The duration for continuing light filling is adjusted.
Optionally, when the feedback device is the light-sensitive device, step S3 includes:
Step S31, the maximum value for the time delay that main control device is opened based on the light compensating lamp adjust the benefit optical control signal
The time of transmission, so that the difference for sending the time that the light filling control signal time and image start exposure is not less than the maximum
Value；
Step S32, master control and equipment determine the maximum value for the time delay that the light compensating lamp is opened and the difference of minimum value, based on most
The difference of big value and minimum value, adjusts the duration that the light compensating lamp continues light filling so that the light compensating lamp continue light filling duration and
The difference of image exposure duration is not less than the difference of the maximum value and minimum value.
In scheme provided by the embodiments of the present application, the maximum value adjustment light filling control based on the time delay that the light compensating lamp is opened
The sending time of signal, based on the light compensating lamp open time delay maximum value and minimum value adjustment light compensating lamp continue light filling when
It is long, it ensure that light compensating lamp is in the open state when image sensor exposure is opened, and exposure time range is held in light compensating lamp
In the time range of continuous light filling, image is thoroughly exposed, the quality of image is improved.
Second aspect, the application provide a kind of device that control light compensating lamp is opened, comprising:
Sending module mends optical control signal for sending to light compensating lamp, wherein the benefit optical control signal is for controlling institute
The unlatching and the light compensating lamp of stating light compensating lamp continue the duration of light filling；
Determining module, for receiving the feedback signal of feedback device transmission, based on the feedback signal and the light filling control
Signal processed determines the time delay that the light compensating lamp is opened；
Adjust module, the time delay for being opened based on the light compensating lamp adjust it is described benefit optical control signal transmission time with
And the light compensating lamp continues the duration of light filling, so that image light compensating lamp in exposure is able to carry out light filling.
Optionally, the feedback device, comprising: imaging sensor or light-sensitive device.
Optionally, when the feedback device is described image sensor, the determining module is specifically used for:
When sending benefit optical control signal to light compensating lamp, exposure control signal is sent to described image sensor, wherein institute
Exposure control signal is stated for controlling described image sensor with maximum frame per second, the sequencing based on the time for exposure at least connects
Continuous exposure image A, image B and tri- frame image of image C；
The brightness value for determining each frame image in described image A, image B and image C, based on described in brightness value determination
The time delay that light compensating lamp is opened.
Optionally, when the feedback device is described image sensor, the determining module is specifically used for: if the figure
As at least the difference of the brightness of a frame image is greater than first threshold in B and adjacent two field pictures A and image C, it is determined that the light filling
Lamp described image B expose when open, based on it is described benefit optical control signal send time and the light compensating lamp open when
Between determine the range of time delay that the light compensating lamp is opened, and the range based on the time delay determine that the light compensating lamp opens when
Prolong.
Optionally, when the feedback device is described image sensor, the determining module is specifically used for:
If the difference of the brightness of described image B and described image A and described image C is both greater than the first threshold, it is determined that
The light compensating lamp is opened within the time that described image B exposes, and is based on described image B exposure time range and the light compensating lamp
The time that control signal is sent determines the range for the time delay that the light compensating lamp is opened, and the range based on the time delay is determined
The time delay that the light compensating lamp is opened.
Optionally, when the feedback device is described image sensor, the determining module is specifically used for:
If the difference of the brightness of any one frame image is greater than described first in described image B and described image A and described image C
Threshold value, it is determined that the light compensating lamp is opened before described image B exposure or when exposing, and is opened based on described image B exposure
The time that time and light compensating lamp control signal are sent determines the range for the time delay that the light compensating lamp is opened, and is based on institute
The range for stating time delay determines the time delay that the light compensating lamp is opened.
Optionally, when the feedback device is the light-sensitive device, the determining module is specifically used for: receiving described photosensitive
The ambient lighting signal that device is sent；Determine that intensity of illumination variation is greater than corresponding to second threshold in the ambient lighting signal
Time point；Based on the time point and the time point for mending optical control signal is sent, determines the time delay that light compensating lamp is opened.
Optionally, the determining module, is also used to: sending at least two light fillings to light compensating lamp and controls signal sequence, and connects
Receive at least two feedback signals that feedback device is sent；Based at least two feedback signal and at least two light fillings control
Signal sequence processed determines the range for the time delay that the light compensating lamp is opened；Range based on the time delay that the light compensating lamp is opened, determines
The maximum value and minimum value for the time delay that the light compensating lamp is opened.
Optionally, the adjustment module, is specifically used for: the maximum value based on the time delay that the light compensating lamp is opened adjusts institute
It states and mends the time that optical control signal is sent, so that sending the difference that the light filling controls signal time and image starts the time exposed
Not less than the maximum value；The maximum value for the time delay that the light compensating lamp is opened and the difference of minimum value are determined, based on maximum value and most
The difference of small value adjusts the duration that the light compensating lamp continues light filling, so that the light compensating lamp continues the duration and image exposure of light filling
The difference of duration is not less than the difference of the maximum value and minimum value.
The third aspect, the application provide a kind of electronic equipment, comprising:
Memory, for storing computer instruction；
Processor is connect with the memory, for executing the computer instruction in the memory, with described in the execution
The method in any possible realization of method or first aspect described in first aspect is executed when computer instruction.
Fourth aspect is stored in the readable storage medium storing program for executing this application provides a kind of computer readable storage medium
Computer instruction, when described instruction is run on computers, so that computer executes method or first party described in first aspect
Method in any possible realization in face.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of stroboscopic lamp system provided by the embodiment of the present application；
Fig. 2 provides a kind of flow chart of method that control light compensating lamp is opened by the embodiment of the present application；
Fig. 3 is a kind of time delay for determining that light compensating lamp light filling is opened based on image brightness values provided by the embodiment of the present application
Flow chart；
Fig. 4 is the procedure chart that light compensating lamp provided by the embodiment of the present application carries out light filling to image；
Fig. 5 is a kind of stream for the time delay that the unlatching of light compensating lamp light filling is determined based on light-sensitive device provided by the embodiment of the present application
Cheng Tu；
Fig. 6 is the flow chart that light-sensitive device provided by the embodiment of the present application obtains ambient lighting curve；
Fig. 7 is a kind of model for the time delay that the unlatching of light compensating lamp light filling is determined based on light-sensitive device provided by the embodiment of the present application
The flow chart enclosed；
Fig. 8 is the relational graph that optical control signal and illumination curve are mended provided by the embodiment of the present application；
Fig. 9 is a kind of time for adjusting the benefit optical control signal transmission and the benefit provided by the embodiment of the present application
Light lamp continues the flow chart of the duration of light filling；
Figure 10 is a kind of structural schematic diagram for the device that control light compensating lamp is opened provided by the embodiment of the present application；
Figure 11 is the structural schematic diagram of a kind of electronic equipment provided by the embodiment of the present application.
Specific embodiment
In scheme provided by the embodiments of the present application, described embodiment is only the application some embodiments, rather than
Whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making creative work premise
Under all other embodiment obtained, shall fall in the protection scope of this application.
In order to better understand the above technical scheme, below by attached drawing and specific embodiment to technical scheme
It is described in detail, it should be understood that the specific features in the embodiment of the present application and embodiment are to the detailed of technical scheme
Thin explanation, rather than the restriction to technical scheme, in the absence of conflict, the embodiment of the present application and embodiment
In technical characteristic can be combined with each other.
Fig. 1 shows the stroboscopic lamp system 100 in the embodiment of the present application, which includes main control device 101, light compensating lamp 102
With imaging sensor 103.Main control device 101 is used to send control signal to light compensating lamp 102 and imaging sensor 103, and receives
The feedback signal that imaging sensor 103 is sent.Light compensating lamp 102 is used to receive the control signal of the transmission of main control device 101, according to control
Signal processed opens or closes light compensating lamp.Imaging sensor 103 is used to receive the control signal of the transmission of main control device 101, according to control
Signal processed opens image exposure, and the image after exposure is sent to main control device 101.In main control device 101 and light compensating lamp 102
Between there is likely to be light-sensitive devices 104, for example, photodiode, phototriode etc..The light-sensitive device 104 is used for will
Intensity of illumination in environment is converted into luminance signal and feeds back to main control device 101.
Embodiment one
Below in conjunction with Figure of description to provided by the embodiment of the present application it is a kind of control light compensating lamp open method do into
One step detailed description, this method specific implementation may comprise steps of (method flow is as shown in Figure 2):
Step S1, main control device send to light compensating lamp and mend optical control signal, wherein the benefit optical control signal is for controlling
The unlatching of the light compensating lamp and the light compensating lamp continue the duration of light filling.
Main control device sends to light compensating lamp and mends optical control signal, when light compensating lamp receives the benefit optical control signal, control
Light compensating lamp light filling is opened, and light compensating lamp simultaneously determines that light compensating lamp continues the time of light filling according to the benefit optical control signal duration.
But due to being influenced by light filling lamp drive circuit, environmental factor and light compensating lamp self time-delay, main control device is sent out to light compensating lamp
It send and mends optical control signal to, there is time delay, image starts exposure cannot same stepping with light compensating lamp light filling between light compensating lamp unlatching
Feedback device is added in order to determine the time delay of light compensating lamp unlatching in row in strobe, and the signal based on feedback device feedback is true
Determine the time delay of light compensating lamp unlatching, detailed process is referring to step S2.
Step S2, main control device receive the feedback signal that feedback device is sent, based on the feedback signal and the light filling
Control signal determines the time delay that the light compensating lamp is opened.
In the embodiment of the present application in order to obtain the time delay that accurate light compensating lamp is opened, the feedback device, comprising: image
Sensor or light-sensitive device.Wherein, main control device determines the light filling based on the feedback signal and the benefit optical control signal
The specific implementation of time delay that lamp is opened may include:
One, when main control device receives the feedback signal of imaging sensor transmission, as shown in figure 3, specifically including:
Step S21, main control device send to described image sensor and expose when sending benefit optical control signal to light compensating lamp
Control signal, wherein the exposure control signal is for controlling described image sensor with maximum frame per second, based on the time for exposure
Tri- frame image of sequencing, at least continuous exposure image A, image B and image C；
Step S22, main control device determine the brightness value of each frame image in described image A, image B and image C, and are based on
The brightness value determines the time delay that the light compensating lamp is opened.
Wherein, step S22 includes:
Step S221, if the difference of at least brightness of a frame image is big in described image B and adjacent two field pictures A and image C
In first threshold, then main control device determines light compensating lamp unlatching in described image B exposure, is based on the benefit optical control signal
The time that the time of transmission and the light compensating lamp are opened determines the range for the time delay that the light compensating lamp is opened, and based on it is described when
The range prolonged determines the time delay that the light compensating lamp is opened.
First threshold is previously provided in main control device, main control device determines the brightness of described image A, image B and image C
Value, detects the difference of the brightness of any frame image in described image B and image A or image C, if detecting described image B and institute
The difference for stating the brightness of image A is greater than first threshold or the difference of the brightness of described image B and described image C is greater than first threshold, then
Determine that the light compensating lamp is opened before described image B exposure or during exposure, the time range of described image B exposure is
Then determine that light compensating lamp is opened according to the time that the benefit optical control signal is sent for the time range that the light compensating lamp is opened
Time delay range, finally, the range based on the time delay that the light compensating lamp is opened determines the time delay of light compensating lamp.
For example, as shown in figure 4, main control device passes through exposure control signal control figure when preset first threshold is 10
As sensor first time continuous exposure image A, tri- frame image of image B and image C, the brightness value point of image A, image B and image C
Not Wei 20,70,100, time of each frame image is T1, each frame image exposuring time is T2, main control device determine image B with
The difference of the brightness of image A is 50, and the difference of the brightness of image B and image A is greater than first threshold, it is determined that in image sensor exposure
Light compensating lamp is opened when image B, according to the time range that image B exposes, determines that the time range that light compensating lamp is opened is [T1, T1+
2T2], based on the light compensating lamp open time and mend optical control signal send time can determine this light compensating lamp open when
Prolonging range is [T1, T1+2T2], then, the time delay that light compensating lamp is opened is determined based on the time delay range that light compensating lamp is opened, wherein root
There are many ways to determining the time delay of light compensating lamp according to the time delay range of light compensating lamp, this programme is in the time delay model for determining that light compensating lamp is opened
The time delay that light compensating lamp is opened can be determined after enclosing based on dichotomy, detailed process is as follows:
Determining that the time delay range that light compensating lamp is opened is [T1, T1+2T2] after, the light compensating lamp is started to mend by main control device
The time of light and imaging sensor start the time alignment of exposure, and calculate the median T of the time delay range of light filling unlatching3=
(T1+(T1+2T2))/2, by T3As the time that light compensating lamp next time is opened in advance, main control device continues to send out to imaging sensor
Exposure control signal is sent, imaging sensor is based on exposure control signal the second continuous exposure image A1, B1And C1Three frame images, and
And the time advance T that the time that light compensating lamp is opened during the second image exposure opens than first time3It opens, determines image
A1, B1And C1Brightness be respectively 20,80,100, main control device determines image B1With image A1Brightness difference be 60, image B1
With image A1Brightness difference be greater than first threshold, it is determined that in image sensor exposure image B1When light compensating lamp open, according to figure
As B1The time that the time range and light compensating lamp of exposure are opened in advance determines that the time range that light compensating lamp is opened is [T1+T2, T1
+2T2], the time that the time and benefit optical control signal opened based on the light compensating lamp are sent can determine that second of light compensating lamp is opened
Time delay range be [T1+T2, T1+2T2], calculate the median T for the time delay range that second of light filling is opened4=((T1+T2)+(T1+
2T2))/2, by T4As the time that third time light compensating lamp is opened in advance, third time light compensating lamp can be calculated based on dichotomy and opened
The time delay range opened is [(2T1+3T2)/2, T1+2T2], main control device continues through exposure control signal control imaging sensor
Continuous exposure image, the image A of n-th exposureN, BNAnd CN, main control device determines AN, BNAnd CNBrightness be 95,100,100,
And determine image BNWith image ANAnd CNThe difference of brightness be both less than first threshold, it is determined that the light compensating lamp of the N-1 times determination shifts to an earlier date
The time of unlatching is the time delay that light compensating lamp is opened.
In scheme provided by the embodiments of the present application, exposure control signal controls imaging sensor continuous exposure at least three frame figures
Picture determines the brightness value of each frame image, and the time model that light compensating lamp is opened is determined based on the brightness value of each frame image
It encloses, imaging sensor is based on the continuous exposure image of exposure control signal, and calculates what light compensating lamp was opened in advance by dichotomy
Time controls signal by repeatedly sending to light compensating lamp and imaging sensor, and determines what light compensating lamp was opened based on dichotomy
Time delay gradually reduces the range that light compensating lamp opens time delay, until the brightness of first frame image and last frame image is close or phase
Whens equal, illustrate that image sensor exposure is synchronous with light compensating lamp light filling and carry out, main control device stops sending light filling control to light compensating lamp
Signal determines that light compensating lamp is opened in advance at this time time is the time delay that light compensating lamp is opened.Therefore, pass through the image after exposure
Brightness value come determine light compensating lamp open time, can accurately determine light compensating lamp open time delay, for adjustment light filling control
The duration that the time of the transmission of signal and light compensating lamp continue light filling provides accurate foundation.
It further, cannot after when imaging sensor determines image sensor exposure the second frame image, light compensating lamp is opened
Determine that light compensating lamp is to open during the second frame image exposure, or open before the second frame image exposure or when exposing
It opens, in order to determine the true scope of light compensating lamp opening time.
Step S221 includes: step S2211, if the difference of the brightness of described image B and described image A and described image C is all
Greater than the first threshold, it is determined that the light compensating lamp is opened within the time that described image B exposes, and is exposed based on described image B
The time that light time range and light compensating lamp control signal are sent determines the range for the time delay that the light compensating lamp is opened, and
Range based on the time delay determines the time delay that the light compensating lamp is opened.
For example, as shown in figure 4, when first threshold is 10, described image A, image B and image C brightness is respectively 20,50,
When 100, main control device determines that the difference of the brightness of image B and image A is 30 based on the brightness value of image, image B and image C's
The difference of brightness is 50, i.e. the difference of the brightness of image B and image A and image C is both greater than first threshold, that is, can determine that light compensating lamp is being schemed
Light compensating lamp is opened during exposing as B, and the time alignment of the time of light compensating lamp light filling and image B exposure are exposed according to image B
The time range of light determines that the time range that light compensating lamp is opened is [T1+T2, T1+2T2], the range opened based on the light compensating lamp
The light filling time delay of light compensating lamp is determined based on dichotomy.
Step S221 further include:
Step S2212, if the difference of the brightness of any one frame image is big in described image B and described image A and described image C
In the first threshold, it is determined that the light compensating lamp is opened before described image B exposure or when exposing, and is based on described image B
The time of the time opened and light compensating lamp control signal transmission is exposed to determine the model of the time delay of the light compensating lamp unlatching
It encloses, and the range based on the time delay determines the time delay that the light compensating lamp is opened.
For example, as shown in figure 4, when first threshold is 10, described image A, image B and image C brightness is respectively 20,100,
When 100, main control device determines that the difference of the brightness of image B and image A is 80 based on the brightness value of image, image B and image C's
The difference of brightness is 0, i.e. the difference of the brightness of image B and image A is both greater than first threshold, and the difference of the brightness of image B and image C is less than
First threshold can determine light compensating lamp before image B exposure after image A exposure or unlatching when exposing, by light compensating lamp light filling
Time and image B exposure time alignment, according to image B expose time range, determine light compensating lamp open time range
For [T2, 2T1+T2], the light filling time delay of light compensating lamp is determined based on dichotomy based on the range of light compensating lamp unlatching.
In scheme provided by the embodiments of the present application, main control device pass through determine image B respectively with adjacent two field pictures A and figure
As the difference of C, to determine the time delay of light compensating lamp unlatching, determine that light compensating lamp is opened by the difference of the brightness of image B and two field pictures
Time range, reduce light compensating lamp open time delay range.Therefore, light filling is determined by the brightness value of the image after exposure
Lamp open time, can accurately determine light compensating lamp open time delay, for adjustment mend optical control signal transmission time and
The duration that light compensating lamp continues light filling provides accurate foundation.
Due to being influenced by environmental factor, when main control device sends benefit optical control signal to light compensating lamp every time, light compensating lamp is mended
The time delay that light is opened may be different, in order to determine the maximum value and minimum value of time delay that light compensating lamp is opened, so as to light compensating lamp
The time that control signal sending time and light compensating lamp continue light filling is adjusted.Determine that light compensating lamp opens when delay, it is main
It controls equipment and sends at least two benefit optical control signals to light compensating lamp according to preset timing, and receive feedback device and send at least
Two feedback signals determine the light compensating lamp based at least two feedback signal and at least two benefits optical control signal
The range of the time delay of unlatching, the range based on the time delay that the light compensating lamp is opened determine the time delay of the light compensating lamp unlatching most
Big value and minimum value.
Two, when main control device receives the feedback signal of light-sensitive device transmission, as shown in figure 5, specifically including:
Step S23, main control device receive the ambient lighting signal that the light-sensitive device is sent；
Step S24, main control device determine that intensity of illumination variation is greater than corresponding to second threshold in the ambient lighting signal
Time point；
Step S25, main control device is based on the time point and sends the time point for mending optical control signal, determines light filling
The time delay that lamp is opened.
Specifically, increasing a light-sensitive device near the camera lens of camera, the illumination in environment is obtained by light-sensitive device
Change curve, when magazine light compensating lamp is opened, light-sensitive device is due to receiving intense light irradiation, and illumination is strong in illumination variation curve
Degree can get higher, therefore, the time corresponding to the point that intensity of illumination is got higher in the illumination variation curve be light compensating lamp open when
Between, the point corresponding time and the difference for mending the time that optical control signal is sent that intensity of illumination is got higher in illumination curve, determine light filling
The time delay that lamp is opened.
Main control device obtains the process of the illumination curve in environment referring to Fig. 6.
Step 601, received optical signal is converted into electric signal by light-sensitive device, and electric signal is sent to operation amplifier
Device.
Step 602, operational amplifier receives the electric signal, which is amplified, and by amplified telecommunications
Number it is sent to analog-digital converter.
Step 603, analog-digital converter receives amplified electric signal, and amplified electric signal is converted into digital letter
Number, main control device obtains ambient lighting change curve based on the digital signal.
When the feedback device is light-sensitive device, in order to accurately determine time delay that the light compensating lamp is opened range mesh
's.Referring specifically to Fig. 7, before step S3, further includes:
Step S4, main control device send at least two light fillings to light compensating lamp and control signal sequence, and receive feedback device hair
At least two feedback signals sent；
Step S5, main control device is based at least two feedback signal and at least two light filling controls signal sequence
Determine the range for the time delay that the light compensating lamp is opened；
Step S6, the range for the time delay that main control device is opened based on the light compensating lamp, determine that the light compensating lamp opens when
The maximum value and minimum value prolonged.
For example, as shown in figure 8, mending optical control signal in T4、T5、T6Moment sends three benefit optical control signals, and according to ring
Border illumination variation curve determines T7、T8、T9Intensity of illumination is got higher when the moment, and then determines light compensating lamp respectively in T7、T8、T9When
It carves and opens, then, calculate T4With T7Time difference be t1, T5With T8Time difference be t2, T6With T9Time difference be t,3,
Compare t1、t2、t3Size, if t1<t2<t3, it is determined that the time delay range for going out light compensating lamp is [t1, t3]。
In scheme provided by the embodiments of the present application, the luminance signal in environment is obtained by light-sensitive device, is based on the light
According to signal determine intensity of illumination variation be greater than second threshold corresponding to time point, the time point be light compensating lamp open when
Between, the time of optical control signal is mended based on the time point and transmission, accurately determines the time delay that light compensating lamp is opened, for adjustment
The duration that the time and light compensating lamp for mending the transmission of optical control signal continue light filling provides accurate foundation.
Step S3, main control device adjust the time that the benefit optical control signal is sent based on the time delay that the light compensating lamp is opened
And the light compensating lamp continues the duration of light filling, so that image light compensating lamp in exposure is able to carry out light filling.
Specifically, referring to Fig. 9, step S3 includes:
Step S31, the maximum value for the time delay that main control device is opened based on the light compensating lamp adjust the benefit optical control signal
The time of transmission, so that the difference for sending the time that the light filling control signal time and image start exposure is not less than the maximum
Value；
Step S32, main control device determine the maximum value for the time delay that the light compensating lamp is opened and the difference of minimum value, based on maximum
The difference of value and minimum value, adjusts the duration that the light compensating lamp continues light filling, so that the light compensating lamp continues the duration and figure of light filling
As the difference of exposure time is not less than the difference of the maximum value and minimum value.
For example, the time that main control device sends benefit optical control signal is Ts, the time that imaging sensor starts exposure is To,
The time of one frame image exposure is Tm, and main control device determines that the minimum value for the time delay that the light compensating lamp is opened is Tmin, maximum value is
Tmax, light compensating lamp, which is in open, when in order to make image sensor exposure is able to carry out light filling, and therefore, main control device sends light filling control
The time of signal processed should shift to an earlier date the time of exposure sensor image, and in order to meet in the time delay range that light compensating lamp is opened,
Light compensating lamp should be not less than T all in open state, To-Ts when exposure imagemax.Light compensating lamp is in the open state, when light compensating lamp is opened
The time delay opened is Tmin, imaging sensor is T in the time that the time and light compensating lamp control signal for carrying out image exposure sendmax
When, the difference of the time of light compensating lamp light filling opening time and image exposure is maximum, is Tmax-Tmin, in order to carry out imaging sensor
During the entire process of light filling, light compensating lamp can carry out light filling, therefore, the duration of light compensating lamp light filling and image sensor exposure when
The time that the maximum value of the difference of the long time that should be greater than light compensating lamp unlatching and the time of image sensor exposure, i.e. light compensating lamp are opened
Length is bigger than exposure time.
In scheme provided by the embodiments of the present application, the maximum value adjustment light filling control based on the time delay that the light compensating lamp is opened
The sending time of signal, based on the light compensating lamp open time delay maximum value and minimum value adjustment light compensating lamp continue light filling when
It is long, it ensure that light compensating lamp is in the open state when image sensor exposure is opened, and exposure time range is held in light compensating lamp
In the time range of continuous light filling, image is thoroughly exposed, and then improves the quality of image.
Embodiment two
Based on the same inventive concept, the embodiment of the present application also provides a kind of device that control light compensating lamp is opened, referring to Figure 10,
The device includes:
Sending module 1001 mends optical control signal for sending to light compensating lamp, wherein the benefit optical control signal is for controlling
The unlatching and the light compensating lamp of making the light compensating lamp continue the duration of light filling；
Determining module 1002, for receiving the feedback signal of feedback device transmission, based on the feedback signal and the benefit
Optical control signal determines the time delay that the light compensating lamp is opened；
Adjust module 1003, the time delay for being opened based on the light compensating lamp adjust it is described benefit optical control signal transmission when
Between and the light compensating lamp continue the duration of light filling so that image light compensating lamp in exposure is able to carry out light filling.
Optionally, the feedback device, comprising: imaging sensor or light-sensitive device.
Optionally, when the feedback device be described image sensor when, the determining module 1002 is specifically used for: to
When light compensating lamp sends benefit optical control signal, exposure control signal is sent to described image sensor, wherein the spectrum assignment letter
Number for controlling described image sensor with maximum frame per second, the sequencing based on the time for exposure, at least continuous exposure image A,
Tri- frame image of image B and image C；
The brightness value for determining each frame image in described image A, image B and image C, based on described in brightness value determination
The time delay that light compensating lamp is opened.
Optionally, when the feedback device is described image sensor, the determining module 1002 is specifically used for: if institute
It states in image B and adjacent two field pictures A and image C at least difference of the brightness of a frame image and is greater than first threshold, it is determined that is described
Light compensating lamp is opened when described image B exposes, and the time and the light compensating lamp sent based on the benefit optical control signal is opened
Time determine the range of time delay that the light compensating lamp is opened, and the range based on the time delay determines that the light compensating lamp is opened
Time delay.
Optionally, when the feedback device is described image sensor, the determining module 1002 is specifically used for:
If the difference of the brightness of described image B and described image A and described image C is both greater than the first threshold, it is determined that
The light compensating lamp is opened within the time that described image B exposes, and is based on described image B exposure time range and the light compensating lamp
The time that control signal is sent determines the range for the time delay that the light compensating lamp is opened, and the range based on the time delay is determined
The time delay that the light compensating lamp is opened.
Optionally, when the feedback device is described image sensor, the determining module 1002 is specifically used for:
If the difference of the brightness of any one frame image is greater than described first in described image B and described image A and described image C
Threshold value, it is determined that the light compensating lamp is opened before described image B exposure or when exposing, and is opened based on described image B exposure
The time that time and light compensating lamp control signal are sent determines the range for the time delay that the light compensating lamp is opened, and is based on institute
The range for stating time delay determines the time delay that the light compensating lamp is opened.
Optionally, when the feedback device is the light-sensitive device, the determining module 1002 is specifically used for: described in reception
The ambient lighting signal that light-sensitive device is sent；Determine that it is right to be greater than second threshold institute for intensity of illumination variation in the ambient lighting signal
The time point answered；Based on the time point and the time point for mending optical control signal is sent, determines the time delay that light compensating lamp is opened.
Optionally, the determining module 1002, is also used to: at least two light fillings, which sent, to light compensating lamp controls signal sequence,
And receive at least two feedback signals of feedback device transmission；It is mended based at least two feedback signal and described at least two
Optical control signal timing determines the range for the time delay that the light compensating lamp is opened；Range based on the time delay that the light compensating lamp is opened,
Determine the maximum value and minimum value of the time delay that the light compensating lamp is opened.
Optionally, the adjustment module 1003, is specifically used for: the maximum value based on the time delay that the light compensating lamp is opened is adjusted
The whole time mending optical control signal and sending, so that sending the time that the light filling control signal time starts exposure with image
Difference be not less than the maximum value；It determines the maximum value for the time delay that the light compensating lamp is opened and the difference of minimum value, is based on maximum value
With the difference of minimum value, the duration that the light compensating lamp continues light filling is adjusted, so that the light compensating lamp continues the duration and image of light filling
The difference of exposure time is not less than the difference of the maximum value and minimum value.
Embodiment three
The embodiment of the present application also provides a kind of electronic equipment, and referring to Figure 11, which includes:
Memory 1101, for storing computer instruction；
Processor 1102 is connect with the memory, for executing the computer instruction in the memory, to execute
The method as described in embodiment one is executed when the computer instruction.
Example IV
The embodiment of the present application also provides a kind of computer readable storage medium, and calculating is stored in the readable storage medium storing program for executing
Machine instruction, when described instruction is run on computers, so that computer executes the method as described in embodiment one.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The shape for the computer program product implemented in usable storage medium (including but not limited to magnetic disk storage and optical memory etc.)
Formula.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Obviously, those skilled in the art can carry out various modification and variations without departing from the essence of the application to the application
Mind and range.In this way, if these modifications and variations of the application belong to the range of the claim of this application and its equivalent technologies
Within, then the application is also intended to include these modifications and variations.
Claims (20)
1. a kind of method that control light compensating lamp is opened characterized by comprising
Step S1 sends to light compensating lamp and mends optical control signal, wherein the benefit optical control signal is for controlling the light compensating lamp
Open the duration for continuing light filling with the light compensating lamp；
Step S2 is received the feedback signal that feedback device is sent, is determined based on the feedback signal and the benefit optical control signal
The time delay that the light compensating lamp is opened；
Step S3 adjusts the time and the light filling that the benefit optical control signal is sent based on the time delay that the light compensating lamp is opened
Lamp continues the duration of light filling, so that image light compensating lamp in exposure is able to carry out light filling.
2. the method as described in claim 1, which is characterized in that the feedback device, comprising: imaging sensor or photosensor
Part.
3. method according to claim 2, which is characterized in that when the feedback device is described image sensor, step
S2 includes:
Step S21 sends exposure control signal to described image sensor when sending benefit optical control signal to light compensating lamp,
In, the exposure control signal is used to control described image sensor with maximum frame per second, the sequencing based on the time for exposure, until
Few continuous exposure image A, image B and tri- frame image of image C；
Step S22 determines the brightness value of each frame image in described image A, image B and image C, and true based on the brightness value
The time delay that the fixed light compensating lamp is opened.
4. method as claimed in claim 3, which is characterized in that step S22 includes:
Step S221, if at least the difference of the brightness of a frame image is greater than the in described image B and adjacent two field pictures A and image C
One threshold value, it is determined that the light compensating lamp described image B expose when open, based on it is described benefit optical control signal send time with
And the time of the light compensating lamp unlatching determines the range for the time delay that the light compensating lamp is opened, and is determined based on the range of the time delay
The time delay that the light compensating lamp is opened out.
5. method as claimed in claim 4, which is characterized in that step S221 includes:
Step S2211, if the difference of the brightness of described image B and described image A and described image C is both greater than the first threshold,
Then determine that the light compensating lamp is opened within the time that described image B exposes, based on described image B exposure time range and described
The time that light compensating lamp control signal is sent determines the range for the time delay that the light compensating lamp is opened, and the range based on the time delay
Determine the time delay that the light compensating lamp is opened.
6. method as claimed in claim 4, which is characterized in that step S221 further include:
Step S2212, if the difference of the brightness of any one frame image is greater than institute in described image B and described image A and described image C
State first threshold, it is determined that the light compensating lamp is opened before described image B exposure or when exposing, and is exposed based on described image B
The time that the time of unlatching and light compensating lamp control signal are sent determines the range for the time delay that the light compensating lamp is opened, and
Range based on the time delay determines the time delay that the light compensating lamp is opened.
7. method according to claim 2, which is characterized in that when the feedback device is the light-sensitive device, step S2 packet
It includes:
Step S23 receives the ambient lighting signal that the light-sensitive device is sent；
Step S24 determines that intensity of illumination variation is greater than time point corresponding to second threshold in the ambient lighting signal；
Step S25, based on the time point and send it is described mend optical control signal time point, determine light compensating lamp open when
Prolong.
8. the method as described in claim 1, which is characterized in that before step S3, further includes:
Step S4 sends at least two light fillings to light compensating lamp and controls signal sequence, and receives at least two of feedback device transmission
Feedback signal；
Step S5 determines the light filling based at least two feedback signal and at least two light filling control signal sequence
The range for the time delay that lamp is opened；
Step S6, the range based on the time delay that the light compensating lamp is opened, determine the time delay that the light compensating lamp is opened maximum value and
Minimum value.
9. method according to claim 8, which is characterized in that step S3 includes:
Step S31, the maximum value based on the time delay that the light compensating lamp is opened adjust the time mending optical control signal and sending,
So that the difference for sending the time that the light filling control signal time and image start exposure is not less than the maximum value；
Step S32 determines the maximum value for the time delay that the light compensating lamp is opened and the difference of minimum value, based on maximum value and minimum value it
Difference adjusts the duration that the light compensating lamp continues light filling so that the light compensating lamp continue light filling duration and image exposure duration it
Difference is not less than the difference of the maximum value and minimum value.
10. a kind of device that control light compensating lamp is opened characterized by comprising
Sending module mends optical control signal for sending to light compensating lamp, wherein the benefit optical control signal is for controlling the benefit
The unlatching of light lamp and the light compensating lamp continue the duration of light filling；
Determining module is believed for receiving the feedback signal of feedback device transmission based on the feedback signal and light filling control
Number determine the time delay that the light compensating lamp is opened；
Module is adjusted, the time delay for opening based on the light compensating lamp adjusts the time and institute that the benefit optical control signal is sent
The duration that light compensating lamp continues light filling is stated, so that image light compensating lamp in exposure is able to carry out light filling.
11. device as claimed in claim 10, which is characterized in that the feedback device, comprising: imaging sensor or photosensor
Part.
12. device as claimed in claim 11, which is characterized in that when the feedback device is described image sensor, institute
Determining module is stated to be specifically used for:
When sending benefit optical control signal to light compensating lamp, exposure control signal is sent to described image sensor, wherein the exposure
For optical control signal for controlling described image sensor with maximum frame per second, the sequencing based on the time for exposure is at least continuous to expose
Light image A, image B and tri- frame image of image C；
The brightness value for determining each frame image in described image A, image B and image C determines the light filling based on the brightness value
The time delay that lamp is opened.
13. device as claimed in claim 12, which is characterized in that the determining module is specifically used for:
If at least the difference of the brightness of a frame image is greater than first threshold in described image B and adjacent two field pictures A and image C,
Determine light compensating lamp unlatching in described image B exposure, the time sent based on the benefit optical control signal and the benefit
The time that light lamp is opened determines the range for the time delay that the light compensating lamp is opened, and the range based on the time delay determines the benefit
The time delay that light lamp is opened.
14. device as claimed in claim 13, which is characterized in that the determining module is specifically used for:
If the difference of the brightness of described image B and described image A and described image C is both greater than the first threshold, it is determined that described
Light compensating lamp is opened within the time that described image B exposes, and is controlled based on described image B exposure time range and the light compensating lamp
The time that signal is sent determines the range for the time delay that the light compensating lamp is opened, and the range based on the time delay determine it is described
The time delay that light compensating lamp is opened.
15. device as claimed in claim 13, which is characterized in that the determining module is specifically used for:
If the difference of the brightness of any one frame image is greater than first threshold in described image B and described image A and described image C
Value, it is determined that the light compensating lamp is before described image B exposure or while expose opens, based on described image B exposure unlatching when
Between and time for sending of light compensating lamp control signal determine the range of time delay that the light compensating lamp is opened, and based on described
The range of time delay determines the time delay that the light compensating lamp is opened.
16. device as claimed in claim 10, which is characterized in that described true when the feedback device is the light-sensitive device
Cover half block is specifically used for:
Receive the ambient lighting signal that the light-sensitive device is sent；
Determine that intensity of illumination variation is greater than time point corresponding to second threshold in the ambient lighting signal；
Based on the time point and the time point for mending optical control signal is sent, determines the time delay that light compensating lamp is opened.
17. device as claimed in claim 10, which is characterized in that the determining module is also used to:
At least two light fillings are sent to light compensating lamp and control signal sequence, and receive at least two feedback letters of feedback device transmission
Number；
Determine that the light compensating lamp is opened based at least two feedback signal and at least two light filling control signal sequence
Time delay range；
Range based on the time delay that the light compensating lamp is opened, determines the maximum value and minimum value of the time delay that the light compensating lamp is opened.
18. device as claimed in claim 17, which is characterized in that the adjustment module is specifically used for:
Maximum value based on the time delay that the light compensating lamp is opened adjusts the time mending optical control signal and sending, so that sending
The light filling control signal time and image start the difference of the time of exposure not less than the maximum value；
It determines the maximum value for the time delay that the light compensating lamp is opened and the difference of minimum value, is based on the difference of maximum value and minimum value, adjustment
The light compensating lamp continues the duration of light filling, so that the difference of duration and image exposure duration that the light compensating lamp continues light filling is not less than
The difference of the maximum value and minimum value.
19. a kind of electronic equipment characterized by comprising
Memory, for storing computer instruction；
Processor is connect with the memory, for executing the computer instruction in the memory, to execute the calculating
Machine executes method as described in any one of claim 1 to 9 when instructing.
20. a kind of computer readable storage medium, which is characterized in that it is stored with computer instruction in the readable storage medium storing program for executing,
When described instruction is run on computers, so that computer executes method as described in any one of claim 1 to 9.
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