CN106791462A - A kind of mobile terminal front camera is taken pictures the method and system of light filling - Google Patents
A kind of mobile terminal front camera is taken pictures the method and system of light filling Download PDFInfo
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- CN106791462A CN106791462A CN201611072807.1A CN201611072807A CN106791462A CN 106791462 A CN106791462 A CN 106791462A CN 201611072807 A CN201611072807 A CN 201611072807A CN 106791462 A CN106791462 A CN 106791462A
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- light
- brightness
- light filling
- front camera
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/71—Circuitry for evaluating the brightness variation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
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Abstract
The present invention relates to technical field of mobile terminals, a kind of mobile terminal front camera is disclosed to take pictures the method and system of light filling, wherein, when opening front camera is taken pictures, when the environmental light brightness of light filling is needed when environmental light brightness is taken pictures less than front camera, light luminance detection signal to the system of mobile terminal is sent, control front camera carries out light filling；Mobile terminal transmitting front camera is taken pictures the light filling light of needs, filters the high light line that front camera is taken pictures in light filling light, and by forming aperture after optical filtering treatment, the aperture spreads out light luminance to light filling light.The invention detects that needing the environmental light brightness of light filling when environmental light brightness is taken pictures less than front camera when taking pictures, aperture is lentamente expanded by the way that the light of light filling is soft, the aperture distributes light luminance, ambient brightness enhancing when making to take pictures.
Description
Technical field
The present invention relates to technical field of mobile terminals, more particularly to a kind of mobile terminal front camera is taken pictures light filling
Method and system.
Background technology
The digital camera functionality of mobile phone refers to whether mobile phone can be clapped by built-in or external digital camera
Take the photograph static images or short-movie shoots, used as a new additional function of mobile phone, the digital camera functionality of mobile phone has been obtained rapidly
Development.With the raising of camera pixel, it is anti-phase that its shooting effect also becomes closer to traditional card camera even low side list
Machine.
Mobile phone camera be divided into it is built-in with it is external, built-in camera refer to camera in interior of mobile phone, be more convenient.External hand
Machine is connected to complete all shoot functions of digital camera by data wire or mobile phone lower interface with digital camera.It is external
The advantage of digital camera is the weight that can mitigate mobile phone, and external digital camera is lightweight, easy to carry, application method
Simply.
The performance of the digital camera of the mobile phone in developing stage should be also at primary stage, only individual handset shooting
Headband has optical zoom function, but major part is owned by Digital Zoom function.It is nevertheless believed that with mobile phone digital camera function
Development, the mobile phone with optical zoom also can be listed gradually.In addition, the digital camera functionality of mobile phone mainly includes shooting quiet
State image, continuous shooting function, short-movie shoots, and camera lens is rotatable, AWB, built-in flash etc..The shoot function of mobile phone
It is have direct relation with its screen material, the resolution ratio of screen, camera pixel, camera material.
The camera of mobile terminal is divided into front camera and rear camera, when user is taken the photograph using the preposition of mobile terminal
When being taken pictures as head, because mobile terminal front camera is near apart from human eye, the light of light filling can not stimulate human eye, existing skill
Light filling effect in art is bad, it is impossible to which, so that the light of the light filling is soft lentamente to expand aperture, the aperture is bright by light
Degree is distributed, so that the effect taken pictures is bad.
Such as user is being autodyned, can open preposition flash lamp during video calling etc., it is ensured that shooting effect,
But, during auto heterodyne, video calling etc., user is near with the distance of mobile phone, if front camera is too bright, to user
Eye damage, if brightness not enough, is unable to reach the effect of expected shooting.Further, since user uses mobile phone
Ambient brightness is different, and the brightness of required compensation is also different, and the flash lamp of constant brightness cannot meet the requirement.
Therefore, for drawbacks described above, prior art has yet to be improved and developed.
The content of the invention
In view of above-mentioned the deficiencies in the prior art, take pictures it is an object of the invention to provide a kind of mobile terminal front camera
The method and system of light filling, need the environment of light filling when environmental light brightness is taken pictures less than front camera when being taken pictures by detecting
Brightness, aperture is lentamente expanded by the way that the light of light filling is soft, and the aperture distributes light luminance, when making to take pictures
Ambient brightness strengthens.
Technical scheme is as follows：
A kind of mobile terminal front camera is taken pictures the method for light filling, wherein, the mobile terminal front camera is taken pictures light filling
Method include：
Step A：When mobile terminal opens front camera is taken pictures, judge whether currently detected environmental light brightness is small
The environmental light brightness of light filling is needed when front camera is taken pictures；
Step B：When the environmental light brightness of light filling is needed when environmental light brightness is taken pictures less than front camera, light luminance is sent
Detection signal controls front camera to carry out light filling to the system of mobile terminal；
Step C：Mobile terminal transmitting front camera is taken pictures the light filling light of needs, is filtered front camera and is taken pictures light filling light
In high light line, light filling light by optical filtering process after form aperture, the aperture spreads out light luminance；
Step D：Electric current when light filling is compared during electric current when moderate, then sends electric current comparison signal to shifting less than light luminance
Dynamic terminal disconnects supply voltage signal, and light filling filters and is stopped.
Preferably, the mobile terminal front camera is taken pictures the method for light filling, wherein, the step A also includes：
Step A1：Step A1：When mobile terminal opens front camera is taken pictures, environmental light brightness when detection is taken pictures,
It is described preposition to take the photograph when needing the environmental light brightness of light filling when the environmental light brightness for detecting is taken pictures more than the front camera
As head is taken pictures under current environmental light brightness, it is not necessary to carry out light filling.
Preferably, the mobile terminal front camera is taken pictures the method for light filling, wherein, the step B is specifically included：
Step B1:Needed when front camera is taken pictures light filling ambient light brightness when induced environment light brightness, compare institute
State the size of the brightness of ambient light and the brightness of the ambient light for needing light filling；
Step B2:When the environmental light brightness of light filling is needed when environmental light brightness is taken pictures less than front camera, light is sent bright
Degree detection signal controls front camera to carry out light filling to the system of mobile terminal.
Preferably, the mobile terminal front camera is taken pictures the method for light filling, wherein, the step C is specifically included：
Step C1：If light when light luminance is moderate is Lux0, the strong light luminance is Lux1, and brightness decreased light is
Lux2, then Lux1> Lux0> lux2；
Step C2：According to the change of supply voltage, the high light line that the front camera is taken pictures in light filling light is dynamically filtered
Lux1；
Step C3：When the take pictures brightness of light filling light of the front camera becomes big i.e. Lux1 and increases, then the power supply of controlled output
Voltage V becomes big, then the increase of optical filtering intensity；
Step C4：When the front camera take pictures light filling light brightness diminish i.e. Lux1 reduce, then the power supply of controlled output
Voltage V diminishes, then optical filtering intensity reduces；
Step C5：After light filling light is processed by light filling optical filtering, aperture is formed, the aperture spreads out light luminance.
Preferably, the mobile terminal front camera is taken pictures the method for light filling, wherein, the step D is specifically included：
Step D1：Electric current I during mobile terminal detection light filling, when the electric current I for comparing light filling is moderate more than the light luminance
Electric current I0 when, then send the controlled output voltage signal V1 of electric current comparison signal 1, the optical filtering intensity increase that light filling filters；
Step D2：During electric current I0 when comparing the electric current I of light filling and being moderate less than the light luminance, then send electric current and compare letter
Numbers 2 controls disconnect supply voltage signals, and light filling filters and is stopped；
Step D3：When the brightness for sensing the ambient light is more than the bright of the ambient light that light filling is needed when the front camera is taken pictures
When spending, the brightness for sensing the ambient light is contrasted by light luminance, and the brightness of relatively more described ambient light needs light filling with described
Ambient light brightness；
Step D4：Send light luminance detection signal 2 to control to close its internal light filling operation, the front camera is taken pictures not
Need to carry out light filling.
A kind of mobile terminal front camera is taken pictures the system of light filling, wherein, the mobile terminal front camera is taken pictures
The system of light filling includes：
Brightness detection module, for when mobile terminal is opened front camera and taken pictures, judging currently detected ring
Border brightness needs the environmental light brightness of light filling when whether being taken pictures less than front camera；
Supplementary lighting module, during for the environmental light brightness that light filling is needed when environmental light brightness is taken pictures less than front camera, sends
Light luminance detection signal controls front camera to carry out light filling to the system of mobile terminal；
Filtration module, the light filling light of needs of being taken pictures for mobile terminal transmitting front camera, filters front camera and takes pictures
High light line in light filling light, light filling light forms aperture after optical filtering is processed, and the aperture spreads out light luminance；
Light filling light control module, for the electric current when light filling is compared less than light luminance it is moderate when electric current when, then send
Electric current comparison signal disconnects supply voltage signal to mobile terminal, and light filling filters and is stopped.
Preferably, the mobile terminal front camera is taken pictures the system of light filling, wherein, the brightness detection module is also
Including：
Normal photographing unit, for when mobile terminal is opened front camera and taken pictures, detecting environment bright when taking pictures
Degree, when needing the environmental light brightness of light filling when the environmental light brightness for detecting is taken pictures more than the front camera, it is described before
Put camera to be taken pictures under current environmental light brightness, it is not necessary to carry out light filling.
Preferably, the mobile terminal front camera is taken pictures the system of light filling, wherein, the supplementary lighting module is specifically wrapped
Include：
Brightness sensing unit, for needed when front camera is taken pictures light filling ambient light brightness when induced environment light
The size of brightness, the relatively brightness of the ambient light and the brightness of the ambient light for needing light filling；
Brightness comparing unit, the environmental light brightness for needing light filling when environmental light brightness is taken pictures less than front camera
When, light luminance detection signal to the system of mobile terminal is sent, control front camera carries out light filling.
Preferably, the mobile terminal front camera is taken pictures the system of light filling, wherein, the filtration module is specifically wrapped
Include：
Brightness setting unit, for set light luminance it is moderate when light be Lux0, the strong light luminance be Lux1, it is bright
Degree decreased light is lux2, then Lux1> Lux0> lux2；
High light line filters unit, for the change according to supply voltage, dynamically filters the front camera and takes pictures light filling light
In high light line Lux1；
First filter unit, for becoming big i.e. Lux1 and increasing when the take pictures brightness of light filling light of the front camera, then controls
The supply voltage V of output becomes big, then the increase of optical filtering intensity；
Second filter unit, for when the front camera take pictures light filling light brightness diminish i.e. Lux1 reduce, then control
The supply voltage V of output diminishes, then optical filtering intensity reduces；
Light diffusion unit, for after light filling light is processed by light filling optical filtering, forming aperture, the aperture expands light luminance
Shed.
Preferably, the mobile terminal front camera is taken pictures the system of light filling, wherein, the light filling light control module
Specifically include：
First light filling electric current comparing unit, electric current I during light filling is detected for mobile terminal, when the electric current I for comparing light filling is more than
During electric current I0 when the light luminance is moderate, then the controlled output voltage signal V1 of electric current comparison signal 1 is sent, what light filling filtered
Optical filtering intensity increases；
Second light filling electric current comparing unit, for the electric current I0 when the electric current I for comparing light filling is moderate less than the light luminance
When, then sending electric current comparison signal 2 and control to disconnect supply voltage signal, light filling filters and is stopped；
Sensing comparing unit, for needing light filling when the brightness for sensing the ambient light is taken pictures more than the front camera
During the brightness of ambient light, the brightness for sensing the ambient light is contrasted by light luminance, compares brightness and the institute of the ambient light
State the brightness of the ambient light for needing light filling；
Light filling closing unit, its internal light filling operation is closed for sending the control of light luminance detection signal 2, described preposition to take the photograph
Being taken pictures as head need not carry out light filling.
Taken pictures the invention discloses a kind of mobile terminal front camera the method and system of light filling, wherein, when it is mobile eventually
When end opening front camera is taken pictures, when judging whether currently detected environmental light brightness takes pictures less than front camera
Need the environmental light brightness of light filling；When the environmental light brightness of light filling is needed when environmental light brightness is taken pictures less than front camera,
Light luminance detection signal to the system of mobile terminal is sent, control front camera carries out light filling；Mobile terminal transmitting is preposition
Camera is taken pictures the light filling light of needs, filters the high light line that front camera is taken pictures in light filling light, and light filling light is by filter
Aperture is formed after light treatment, the aperture spreads out light luminance；Electric current when light filling is compared is suitable less than light luminance
During electric current when middle, then send electric current comparison signal and disconnect supply voltage signal to mobile terminal, light filling optical filtering is stopped.This
Invention detects the environmental light brightness that light filling is needed when environmental light brightness when taking pictures is taken pictures less than front camera, by light filling
Light is soft lentamente to expand aperture, and the aperture distributes light luminance, ambient brightness enhancing when making to take pictures.
Brief description of the drawings
Fig. 1 be mobile terminal front camera of the present invention take pictures light filling method preferred embodiment flow chart.
Fig. 2 be mobile terminal front camera of the present invention take pictures light filling system preferred embodiment principle of work and power frame
Figure.
Specific embodiment
The present invention provides the method and system that a kind of mobile terminal front camera takes pictures light filling, to make mesh of the invention
, technical scheme and advantage it is clearer, clear and definite, the present invention is described in more detail for the embodiment that develops simultaneously referring to the drawings.
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
As shown in figure 1, Fig. 1 is mobile terminal front camera of the present invention take pictures light filling method preferred embodiment stream
Cheng Tu.
A kind of mobile terminal front camera provided in an embodiment of the present invention is taken pictures the method for light filling, is comprised the following steps：
Step S100, when mobile terminal opens front camera is taken pictures, judges that currently detected environmental light brightness is
The no environmental light brightness for needing light filling when being taken pictures less than front camera.
It is near apart from human eye when mobile terminal front camera is taken pictures in the present invention, when needing light filling to take pictures, the benefit
The light of light can not stimulate human eye, i.e., the brightness of described light can not be strong, so needing to control the light of the light filling soft slow
Slowly expand aperture, the aperture distributes light luminance, ambient brightness enhancing when making to take pictures.The present invention is mobile whole
When end opening front camera is taken pictures, light filling is needed when judging whether current environmental light brightness takes pictures less than front camera
Environmental light brightness.
Environmental light brightness of detection when taking pictures, when detecting the environmental light brightness and being taken pictures more than the front camera
When needing the environmental light brightness of light filling, the front camera is taken pictures under current environmental light brightness, it is not necessary to carry out light filling；
It is described when needing the environmental light brightness of light filling when detecting the environmental light brightness and being taken pictures less than the front camera
Front camera is taken pictures under current environmental light brightness, it is necessary to carry out light filling control process.
Further, the S100 also includes：
S110, when mobile terminal opens front camera is taken pictures, environmental light brightness when detection is taken pictures, when what is detected
When environmental light brightness needs the environmental light brightness of light filling when being taken pictures more than the front camera, the front camera is current
Taken pictures under environmental light brightness, it is not necessary to carry out light filling.
Step S200, when the environmental light brightness of light filling is needed when environmental light brightness is taken pictures less than front camera, sends
Light luminance detection signal controls front camera to carry out light filling to the system of mobile terminal.
In the present invention, the front camera controls the front camera to take pictures light filling opening and closing, before described
When putting camera opening, the brightness that drive signal answers ambient light to Perceived control is sent.
The brightness of the ambient light of light filling is needed when the brightness for sensing the ambient light is taken pictures less than the front camera
When, the relatively brightness of the brightness of the ambient light and the ambient light for needing light filling.
Send light luminance detection signal 1 to control to open its internal light filling function, launch the front camera and take pictures
The light filling light of needs, processes the light filling light, and the light filling light forms aperture, the aperture after optical filtering is processed
Light luminance is spread out, ambient brightness enhancing when making the front camera take pictures.
Further, the S200 is specifically included：
S210, needed when front camera is taken pictures light filling ambient light brightness when induced environment light brightness, it is relatively described
The size of the brightness of ambient light and the brightness of the ambient light for needing light filling；
S220, when the environmental light brightness of light filling is needed when environmental light brightness is taken pictures less than front camera, sends light luminance
Detection signal controls front camera to carry out light filling to the system of mobile terminal.
Step S300, mobile terminal transmitting front camera is taken pictures the light filling light of needs, is filtered front camera and is taken pictures
High light line in light filling light, light filling light forms aperture after optical filtering is processed, and the aperture spreads out light luminance.
In the present invention, taken pictures due to the front camera light filling when light need it is soft, brightness is moderate, then need filter
The high light line taken pictures except the front camera in light filling light.If the light when brightness is moderate is Lux0, the high light
Line brightness is Lux1, and the weaker light of brightness ratio is lux2, then Lux1> Lux0> lux2.
Mobile terminal according to the change of its supply voltage, dynamically filter the front camera take pictures it is strong in light filling light
Light Lux1.The supply voltage V of the light filling filter unit 20 is by power management module controlled output, the power management module
The voltage signal V of output is exported by voltage control module.
The voltage control module according to the front camera take pictures light filling light brightness change, adjust supply voltage
V, and then control the optical filtering intensity of light filling optical filtering, i.e. optical filtering intensity is related to the supply voltage V that the voltage control module is exported.
Further, the S300 is specifically included：
S310, if light when light luminance is moderate is Lux0, the strong light luminance is Lux1, and brightness decreased light is lux2,
Then Lux1> Lux0> lux2；
S320, according to the change of supply voltage, dynamically filters the high light line Lux1 that the front camera is taken pictures in light filling light；
S330, when the take pictures brightness of light filling light of the front camera becomes big i.e. Lux1 increases, then the power supply of controlled output is electric
Pressure V becomes big, then the increase of optical filtering intensity；
S340, when the front camera take pictures light filling light brightness diminish i.e. Lux1 reduce, then controlled output power supply electricity
Pressure V diminishes, then optical filtering intensity reduces；
S350, after light filling light is processed by light filling optical filtering, forms aperture, and the aperture spreads out light luminance.
Step S400, electric current when light filling is compared during electric current when moderate, then sends electric current and compares less than light luminance
Signal disconnects supply voltage signal to mobile terminal, and light filling filters and is stopped.
In the present invention, the electric current I of light filling is detected, the electric current I0 when the electric current I of light filling is moderate more than the light luminance
When, then send electric current comparison signal 1 to the voltage control module, the voltage control module output voltage signal V1, control
The optical filtering intensity increase that light filling filters.
During electric current I0 when the electric current I of light filling is moderate less than the light luminance, then electric current comparison signal 2 to institute is sent
Voltage control module is stated, the voltage control module disconnects supply voltage signal, and light filling filter unit is stopped.
Further, the S400 is specifically included：
S410, electric current I during mobile terminal detection light filling, when the electric current I for comparing light filling is moderate more than the light luminance
During electric current I0, then the controlled output voltage signal V1 of electric current comparison signal 1 is sent, the optical filtering intensity increase that light filling filters；
When S420, electric current I0 when comparing the electric current I of light filling and being moderate less than the light luminance, then electric current comparison signal is sent
2 controls disconnect supply voltage signal, and light filling filters and is stopped；
S430, the brightness of the ambient light of light filling is needed when the brightness for sensing the ambient light is taken pictures more than the front camera
When, the brightness for sensing the ambient light is contrasted by light luminance, the brightness of relatively more described ambient light and the light filling that needs
The brightness of ambient light；
S440, sends light luminance detection signal 2 and controls to close its internal light filling operation, and the front camera is taken pictures and is not required to
Carry out light filling.
Based on above-described embodiment, the present invention also provides the system that a kind of mobile terminal front camera takes pictures light filling, and Fig. 2 is
Mobile terminal front camera of the present invention take pictures light filling system preferred embodiment functional schematic block diagram.
The system of light filling as shown in Fig. 2 a kind of mobile terminal front camera provided in an embodiment of the present invention is taken pictures, it is described
The take pictures system of light filling of mobile terminal front camera includes：
Brightness detection module 210, for when mobile terminal is opened front camera and taken pictures, judging currently detected
Environmental light brightness needs the environmental light brightness of light filling when whether being taken pictures less than front camera；As detailed above.
Supplementary lighting module 220, the environmental light brightness for needing light filling when environmental light brightness is taken pictures less than front camera
When, light luminance detection signal to the system of mobile terminal is sent, control front camera carries out light filling；As detailed above.
Filtration module 230, the light filling light of needs of being taken pictures for mobile terminal transmitting front camera, filters preposition shooting
Head is taken pictures the high light line in light filling light, and by forming aperture after optical filtering treatment, the aperture expands light luminance to light filling light
Shed；As detailed above.
Light filling light control module 240, for the electric current when light filling is compared less than light luminance it is moderate when electric current when,
Then send electric current comparison signal and disconnect supply voltage signal to mobile terminal, light filling filters and is stopped；As detailed above.
Further, the mobile terminal front camera is taken pictures the system of light filling, wherein, the brightness detection module
Also include：
Normal photographing unit, for when mobile terminal is opened front camera and taken pictures, detecting environment bright when taking pictures
Degree, when needing the environmental light brightness of light filling when the environmental light brightness for detecting is taken pictures more than the front camera, it is described before
Put camera to be taken pictures under current environmental light brightness, it is not necessary to carry out light filling；As detailed above.
The mobile terminal front camera is taken pictures the system of light filling, wherein, the supplementary lighting module is specifically included：
Brightness sensing unit, for needed when front camera is taken pictures light filling ambient light brightness when induced environment light
The size of brightness, the relatively brightness of the ambient light and the brightness of the ambient light for needing light filling；As detailed above.
Brightness comparing unit, the environment bright for needing light filling when environmental light brightness is taken pictures less than front camera
When spending, light luminance detection signal to the system of mobile terminal is sent, control front camera carries out light filling；Specific as above institute
State.
The mobile terminal front camera is taken pictures the system of light filling, wherein, the filtration module is specifically included：
Brightness setting unit, for set light luminance it is moderate when light be Lux0, the strong light luminance be Lux1, it is bright
Degree decreased light is lux2, then Lux1> Lux0> lux2；As detailed above.
High light line filters unit, for the change according to supply voltage, dynamically filters the front camera and takes pictures light filling
High light line Lux1 in light；As detailed above.
First filter unit, for becoming big i.e. Lux1 and increasing when the take pictures brightness of light filling light of the front camera, then
The supply voltage V of controlled output becomes big, then the increase of optical filtering intensity；As detailed above.
Second filter unit, for when the front camera take pictures light filling light brightness diminish i.e. Lux1 reduce, then
The supply voltage V of controlled output diminishes, then optical filtering intensity reduces；As detailed above.
Light diffusion unit, for after light filling light is processed by light filling optical filtering, forming aperture, the aperture is bright by light
Degree spreads out；As detailed above.
The mobile terminal front camera is taken pictures the system of light filling, wherein, the light filling light control module is specifically wrapped
Include：
First light filling electric current comparing unit, electric current I during light filling is detected for mobile terminal, when the electric current I for comparing light filling is more than
During electric current I0 when the light luminance is moderate, then the controlled output voltage signal V1 of electric current comparison signal 1 is sent, what light filling filtered
Optical filtering intensity increases；As detailed above.
Second light filling electric current comparing unit, for the electricity when the electric current I for comparing light filling is moderate less than the light luminance
During stream I0, then send electric current comparison signal 2 and control to disconnect supply voltage signal, light filling filters and is stopped；As detailed above.
Sensing comparing unit, for needing to mend when the brightness for sensing the ambient light is taken pictures more than the front camera
During the brightness of the ambient light of light, the brightness for sensing the ambient light is contrasted by light luminance, the brightness of relatively more described ambient light
With the brightness of the ambient light for needing light filling；As detailed above.
Light filling closing unit, its internal light filling operation is closed for sending the control of light luminance detection signal 2, it is described before
Putting camera and take pictures need not carry out light filling；As detailed above.
In sum, taken pictures the invention discloses a kind of mobile terminal front camera the method and system of light filling, wherein,
When mobile terminal opens front camera is taken pictures, judge currently detected environmental light brightness whether less than preposition shooting
Head needs the environmental light brightness of light filling when taking pictures；The ambient light of light filling is needed when environmental light brightness is taken pictures less than front camera
During brightness, light luminance detection signal to the system of mobile terminal is sent, control front camera carries out light filling；Mobile terminal is sent out
Penetrate front camera to take pictures the light filling light of needs, filter the high light line that front camera is taken pictures in light filling light, light filling light
Aperture is formed after optical filtering is processed, the aperture spreads out light luminance；Electric current when light filling is compared is less than light
During electric current when brightness is moderate, then send electric current comparison signal and disconnect supply voltage signal to mobile terminal, light filling filters stopping
Work.The invention detects that needing the environmental light brightness of light filling when environmental light brightness is taken pictures less than front camera when taking pictures, lead to
Cross light filling light it is soft lentamente expand aperture, the aperture distributes light luminance, ambient brightness when making to take pictures
Enhancing.
Certainly, one of ordinary skill in the art will appreciate that all or part of flow in realizing above-described embodiment method,
Computer program is can be by instruct related hardware（Such as processor, controller etc.）To complete, described program can be stored
In the storage medium of an embodied on computer readable, the program may include such as the flow of above-mentioned each method embodiment upon execution.Its
Described in storage medium can be for memory, magnetic disc, CD etc..
It should be appreciated that application of the invention is not limited to above-mentioned citing, and for those of ordinary skills, can
To be improved according to the above description or converted, all these modifications and variations should all belong to the guarantor of appended claims of the present invention
Shield scope.
Claims (10)
1. a kind of mobile terminal front camera is taken pictures the method for light filling, it is characterised in that the mobile terminal front camera
The method of light filling of taking pictures includes：
Step A：When mobile terminal opens front camera is taken pictures, judge whether currently detected environmental light brightness is small
The environmental light brightness of light filling is needed when front camera is taken pictures；
Step B：When the environmental light brightness of light filling is needed when environmental light brightness is taken pictures less than front camera, light luminance is sent
Detection signal controls front camera to carry out light filling to the system of mobile terminal；
Step C：Mobile terminal transmitting front camera is taken pictures the light filling light of needs, is filtered front camera and is taken pictures light filling light
In high light line, light filling light by optical filtering process after form aperture, the aperture spreads out light luminance；
Step D：Electric current when light filling is compared during electric current when moderate, then sends electric current comparison signal to shifting less than light luminance
Dynamic terminal disconnects supply voltage signal, and light filling filters and is stopped.
2. mobile terminal front camera is taken pictures the method for light filling according to claim 1, it is characterised in that the step A
Also include：
Step A1：When mobile terminal opens front camera is taken pictures, environmental light brightness of detection when taking pictures, when detecting
Environmental light brightness when needing the environmental light brightness of light filling when being taken pictures more than the front camera, the front camera is being worked as
Taken pictures under preceding environmental light brightness, it is not necessary to carry out light filling.
3. mobile terminal front camera is taken pictures the method for light filling according to claim 1, it is characterised in that the step B
Specifically include：
Step B1:Needed when front camera is taken pictures light filling ambient light brightness when induced environment light brightness, compare institute
State the size of the brightness of ambient light and the brightness of the ambient light for needing light filling；
Step B2:When the environmental light brightness of light filling is needed when environmental light brightness is taken pictures less than front camera, light is sent bright
Degree detection signal controls front camera to carry out light filling to the system of mobile terminal.
4. mobile terminal front camera is taken pictures the method for light filling according to claim 1, it is characterised in that the step C
Specifically include：
Step C1：If light when light luminance is moderate is Lux0, the strong light luminance is Lux1, and brightness decreased light is
Lux2, then Lux1> Lux0> lux2；
Step C2：According to the change of supply voltage, the high light line that the front camera is taken pictures in light filling light is dynamically filtered
Lux1；
Step C3：When the take pictures brightness of light filling light of the front camera becomes big i.e. Lux1 and increases, then the power supply of controlled output
Voltage V becomes big, then the increase of optical filtering intensity；
Step C4：When the front camera take pictures light filling light brightness diminish i.e. Lux1 reduce, then the power supply of controlled output
Voltage V diminishes, then optical filtering intensity reduces；
Step C5：After light filling light is processed by light filling optical filtering, aperture is formed, the aperture spreads out light luminance.
5. mobile terminal front camera is taken pictures the method for light filling according to claim 1, it is characterised in that the step D
Specifically include：
Step D1：Electric current I during mobile terminal detection light filling, when the electric current I for comparing light filling is moderate more than the light luminance
Electric current I0 when, then send the controlled output voltage signal V1 of electric current comparison signal 1, the optical filtering intensity increase that light filling filters；
Step D2：During electric current I0 when comparing the electric current I of light filling and being moderate less than the light luminance, then send electric current and compare letter
Numbers 2 controls disconnect supply voltage signals, and light filling filters and is stopped；
Step D3：When the brightness for sensing the ambient light is more than the bright of the ambient light that light filling is needed when the front camera is taken pictures
When spending, the brightness for sensing the ambient light is contrasted by light luminance, and the brightness of relatively more described ambient light needs light filling with described
Ambient light brightness；
Step D4：Send light luminance detection signal 2 to control to close its internal light filling operation, the front camera is taken pictures not
Need to carry out light filling.
6. a kind of mobile terminal front camera is taken pictures the system of light filling, it is characterised in that the mobile terminal front camera
The system of light filling of taking pictures includes：
Brightness detection module, for when mobile terminal is opened front camera and taken pictures, judging currently detected ring
Border brightness needs the environmental light brightness of light filling when whether being taken pictures less than front camera；
Supplementary lighting module, during for the environmental light brightness that light filling is needed when environmental light brightness is taken pictures less than front camera, sends
Light luminance detection signal controls front camera to carry out light filling to the system of mobile terminal；
Filtration module, the light filling light of needs of being taken pictures for mobile terminal transmitting front camera, filters front camera and takes pictures
High light line in light filling light, light filling light forms aperture after optical filtering is processed, and the aperture spreads out light luminance；
Light filling light control module, for the electric current when light filling is compared less than light luminance it is moderate when electric current when, then send
Electric current comparison signal disconnects supply voltage signal to mobile terminal, and light filling filters and is stopped.
7. mobile terminal front camera is taken pictures the system of light filling according to claim 6, it is characterised in that the brightness
Detection module also includes：
Normal photographing unit, for when mobile terminal is opened front camera and taken pictures, detecting environment bright when taking pictures
Degree, when needing the environmental light brightness of light filling when the environmental light brightness for detecting is taken pictures more than the front camera, it is described before
Put camera to be taken pictures under current environmental light brightness, it is not necessary to carry out light filling.
8. mobile terminal front camera is taken pictures the system of light filling according to claim 6, it is characterised in that the light filling mould
Block is specifically included：
Brightness sensing unit, for needed when front camera is taken pictures light filling ambient light brightness when induced environment light
The size of brightness, the relatively brightness of the ambient light and the brightness of the ambient light for needing light filling；
Brightness comparing unit, the environmental light brightness for needing light filling when environmental light brightness is taken pictures less than front camera
When, light luminance detection signal to the system of mobile terminal is sent, control front camera carries out light filling.
9. mobile terminal front camera is taken pictures the system of light filling according to claim 6, it is characterised in that the optical filtering mould
Block is specifically included：
Brightness setting unit, for set light luminance it is moderate when light be Lux0, the strong light luminance be Lux1, it is bright
Degree decreased light is lux2, then Lux1> Lux0> lux2；
High light line filters unit, for the change according to supply voltage, dynamically filters the front camera and takes pictures light filling light
In high light line Lux1；
First filter unit, for becoming big i.e. Lux1 and increasing when the take pictures brightness of light filling light of the front camera, then controls
The supply voltage V of output becomes big, then the increase of optical filtering intensity；
Second filter unit, for when the front camera take pictures light filling light brightness diminish i.e. Lux1 reduce, then control
The supply voltage V of output diminishes, then optical filtering intensity reduces；
Light diffusion unit, for after light filling light is processed by light filling optical filtering, forming aperture, the aperture expands light luminance
Shed.
10. mobile terminal front camera is taken pictures the system of light filling according to claim 6, it is characterised in that the light filling
Light control module is specifically included：
First light filling electric current comparing unit, electric current I during light filling is detected for mobile terminal, when the electric current I for comparing light filling is more than
During electric current I0 when the light luminance is moderate, then the controlled output voltage signal V1 of electric current comparison signal 1 is sent, what light filling filtered
Optical filtering intensity increases；
Second light filling electric current comparing unit, for the electric current I0 when the electric current I for comparing light filling is moderate less than the light luminance
When, then sending electric current comparison signal 2 and control to disconnect supply voltage signal, light filling filters and is stopped；
Sensing comparing unit, for needing light filling when the brightness for sensing the ambient light is taken pictures more than the front camera
During the brightness of ambient light, the brightness for sensing the ambient light is contrasted by light luminance, compares brightness and the institute of the ambient light
State the brightness of the ambient light for needing light filling；
Light filling closing unit, its internal light filling operation is closed for sending the control of light luminance detection signal 2, described preposition to take the photograph
Being taken pictures as head need not carry out light filling.
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| CN201611072807.1A CN106791462B (en) | 2016-11-29 | 2016-11-29 | Method and system for supplementing light during photographing of front camera of mobile terminal |
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| Publication number | Publication date |
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| CN106791462B (en) | 2019-12-10 |
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