CN105812673A - Flash lamp control system and method - Google Patents
Flash lamp control system and method Download PDFInfo
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- CN105812673A CN105812673A CN201410845761.7A CN201410845761A CN105812673A CN 105812673 A CN105812673 A CN 105812673A CN 201410845761 A CN201410845761 A CN 201410845761A CN 105812673 A CN105812673 A CN 105812673A
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Abstract
The invention provides a flash lamp control system and a method, which are applied to a master terminal and a plurality of slave terminals. The master terminal and the plurality of slave terminals are located around a to-be-photographed person. The flash lamp control system controls the master terminal and the plurality of slave terminals to respectively sense the optical parameters of the to-be-photographed person. Based on the optical parameters, the flash lamp driving current value and the flash duration of each terminal can be calculated. During the exposure photographing process, the flash lamp lighting conditions of the master terminal and the plurality of slave terminals are synchronously controlled, so that the sufficient amount of exposure is provided. According to the technical scheme of the flash lamp control system and the method, the light measuring accuracy is improved by arranging a plurality of mobile terminals around the to-be-photographed person. Meanwhile, based on the synchronous lighting-supplementing effect of the plurality of mobile terminals, the lighting brightness at a spot is improved. Therefore, the balance of the lighting brightness for the to-be-photographed person is ensured. As a result, the amount of exposure for the image photographing process is sufficient. The photographing effect is improved.
Description
Technical field
The present invention relates to mobile terminal shooting technology field, particularly to a kind of flash lamp control system and method.
Background technology
Current most of mobile terminal all has camera function, takes pictures for user and brings conveniently.In order to make photo obtain good exposure effect when illumination is not enough, mobile terminal generally also add flash lamp and carry out flash of light and carry out light filling.The size driving electric current of flash lamp directly affects the exposure effect of the photo that mobile terminal is taken.But, if more electric energy is wasted in the electric current too conference that drives of flash lamp, and existing mobile terminal is subject to the restriction of self size, and its battery also cannot provide sufficiently large driving electric current, thus causing flash fire limited brightness, and photo lithography poor effect.
Summary of the invention
In view of this, it is necessary to propose a kind of flash lamp control system and method, to solve the problems referred to above.
A kind of flash lamp control system, runs in a master terminal.This master terminal and the plurality of auxiliary terminal are positioned at around a person taken picture.This master terminal includes a communicator and an imaging device.This imaging device includes a photographic head, a photo-sensitive cell and a flash lamp.This system includes a control module, an acquisition module and a computing module.This control module is used for producing a photosensitive request signal and control this communicator this photosensitive request signal is sent to the plurality of auxiliary terminal, senses the intensity of illumination of this person taken picture respectively and produces corresponding optical parametric triggering the plurality of auxiliary terminal.This control module is additionally operable to control this photographic head and this person taken picture is focused, and controls the intensity of illumination of this photosensitive elements sense one focusing area according to this photosensitive request signal and produce corresponding optical parametric.Distance between this acquisition module is used for obtaining the optical parametric of the plurality of auxiliary terminal return, this photosensitive elements sense arrives optical parametric and each terminal and this person taken picture.This computing module for according to each terminal senses to optical parametric and each terminal and this person taken picture between distance calculate flash lamp driving current value and the flash duration of each terminal, and by this communicator, corresponding flash lamp driving current value and flash duration are sent to corresponding auxiliary terminal.This control module is additionally operable to take pictures and control this photographic head after control signal and be exposed taking pictures to this person taken picture receiving one, produce a flash control signal simultaneously and control this communicator by this flash control signal synchronized transmission to the plurality of auxiliary terminal, thus respectively to drive flash lamp luminescence in process is taken pictures in this exposure of electric current and the plurality of auxiliary terminal of flash duration Synchronization Control and this master terminal accordingly.
A kind of flash lamp control method, is applied in a master terminal, and this master terminal and the plurality of auxiliary terminal are positioned at around a person taken picture, and this master terminal includes a communicator and an imaging device, and this imaging device includes a photographic head, a photo-sensitive cell and a flash lamp.The method comprising the steps of: produces a photosensitive request signal and controls this communicator this photosensitive request signal is sent to the plurality of auxiliary terminal, senses the intensity of illumination of this person taken picture respectively and produces corresponding optical parametric triggering the plurality of auxiliary terminal；Control this photographic head this person taken picture is focused, and control the intensity of illumination of this photosensitive elements sense one focusing area according to this photosensitive request signal and produce corresponding optical parametric；Obtain optical parametric that the plurality of auxiliary terminal returns, distance between this photosensitive elements sense optical parametric and each terminal and this person taken picture that arrive；According to each terminal senses to optical parametric and each terminal and this person taken picture between distance calculate flash lamp driving current value and the flash duration of each terminal, and by this communicator, corresponding flash lamp driving current value and flash duration are sent to corresponding auxiliary terminal；And take pictures and control this photographic head after control signal receiving one and be exposed taking pictures to this person taken picture, produce a flash control signal simultaneously and control this communicator by this flash control signal synchronized transmission to the plurality of auxiliary terminal, thus respectively to drive flash lamp luminescence in process is taken pictures in this exposure of electric current and the plurality of auxiliary terminal of flash duration Synchronization Control and this master terminal accordingly.
A kind of flash lamp control system, runs in an auxiliary terminal.This master terminal and the plurality of auxiliary terminal are positioned at around a person taken picture.Each auxiliary terminal includes a communicator, a photo-sensitive cell and a flash lamp.This system includes a control module and an acquisition module.This control module is for when this communicator receives the photosensitive request signal from this master terminal, control the intensity of illumination of this person taken picture of this photosensitive elements sense according to this photosensitive request signal and produce corresponding optical parametric, and controlling this communicator this optical parametric is returned to this master terminal.This acquisition module is for obtaining the flash lamp driving current value from this master terminal and the flash duration that this communicator receives.This control module is additionally operable to when receiving the flash control signal from this master terminal, controls this flash lamp with this driving electric current and flash duration luminous.
Compared to prior art, flash lamp control system provided by the invention and method, by adopting multiple mobile terminal light-metering to promote the accuracy of light-metering around person taken picture, and adopt multiple mobile terminal synchronization light filling to promote scene illumination brightness and to ensure the illumination luminance balance of person taken picture, thus the light exposure providing enough to image of taking pictures, improve shooting effect.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that in an embodiment of the present invention, a person taken picture is carried out light filling by multiple mobile terminals.
Fig. 2 is the running environment schematic diagram of the flash lamp control system in an embodiment of the present invention.
Fig. 3 is the functional block diagram of flash lamp control system in Fig. 2.
Fig. 4 is the flow chart that the flash lamp control method of the present invention is applied in master terminal.
The flash lamp control method that Fig. 5 is the present invention is applied to the flow chart in auxiliary terminal.
Main element symbol description
| Person taken picture | 100 |
| Flash lamp control system | 10 |
| Control module | 11 |
| Acquisition module | 12 |
| Computing module | 13 |
| Master terminal | 200 |
| Communicator | 21、31 |
| Display screen | 22 |
| Imaging device | 23 |
| Photographic head | 231 |
| Photo-sensitive cell | 232、32 |
| Flash lamp | 233、33 |
| Storage device | 24、34 |
| Processor | 25、35 |
| Auxiliary terminal | 300 |
| Step | 401-406、501-505 |
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
Refer to Fig. 1, be that a person taken picture 100 is taken pictures the schematic diagram of light filling by the multiple mobile terminals in an embodiment of the present invention.This mobile terminal can be smart mobile phone, panel computer etc..The plurality of mobile terminal is positioned at around a person taken picture 100, including a master mobile terminal (hereinafter referred to as master terminal 200) and multiple auxiliary mobile terminal (hereinafter referred to as auxiliary terminal 300).This master terminal 200 is for taking pictures to this person taken picture 100, and the plurality of auxiliary terminal 300 is for being synchronized to this person taken picture 100 light filling with this master terminal 200.
Refer to Fig. 2, be the running environment schematic diagram of flash lamp control system 10 in an embodiment of the present invention.This flash lamp control system 10 is installed and is run in this master terminal 200 and the plurality of auxiliary terminal 300.
This flash lamp control system 10 is for controlling this master terminal 200 and the plurality of auxiliary terminal 300 senses the optical parametric of person taken picture 100 respectively, flash lamp driving current value and the flash duration of each terminal 200,300 is calculated according to this optical parametric, and luminous to provide enough light exposure at the exposure flash lamp of this master terminal 200 of Synchronization Control and multiple auxiliary terminal 300 in process of taking pictures, hereafter will be described in detail.
This master terminal 200 also includes, but not limited to communicator 21, display screen 22, imaging device 23, storage device 24 and a processor 25.This display screen 22 is used for showing a shooting interface, and receives the operation of user and produce input information.Such as, user can operate on this display screen 22 and takes pictures button and produce one and take pictures control signal.This communicator 21 is for communicating with the plurality of auxiliary terminal 300.
This imaging device 23 includes photographic head 231, photo-sensitive cell 232 and a flash lamp 233.This photographic head 231 is for shooting the image of this person taken picture 100.This photographic head 231 can adopt separate design with this flash lamp 233, it is also possible to is that both integrate.This photo-sensitive cell 232 is for sensing the luminance parameter of ambient.This photo-sensitive cell 232 can be such as charge coupled device (ChargeCoupleDevice, CCD) or complementary metal oxide semiconductors (CMOS) (ComplementaryMetalOxideSemiconductor, CMOS) etc..This flash lamp 233 is used for the flash of light sending multiple varying strength when external light source deficiency with reinforcement external light source.In the present embodiment, the image acquisition region of this photographic head 231 is partly or entirely overlapping with the light irradiation area of this flash lamp 233, and the light that namely this flash lamp 233 sends is irradiated to the partially or fully region of this image acquisition region.
This auxiliary terminal 300 also includes, but not limited to communicator 31, photo-sensitive cell 32, flash lamp 33, storage device 34 and processor 35.This communicator 31 is for communicating with this master terminal 200.Can be communicated by wireless communication technology between this communicator 21 and 31.This wireless communication technology includes, but not limited to infrared ray, bluetooth, WiFi, ZegBee, Z-Wave or radio-frequency technique.
This storage device 24,34 storage Various types of data, for instance the computerization program code of this flash lamp control system 10.This processor 25,35 performs the computerization program code of all kinds of softwares installed in this flash lamp control system 10 and this master terminal 200 or this auxiliary terminal 300.
Refer to Fig. 3, be the functional block diagram of flash lamp control system 10 in Fig. 2.This flash lamp control system 10 includes controlling module 11, acquisition module 12 and computing module 13.Module alleged by the present invention refer to a kind of can be performed by the processor 25,35 of this master terminal 200 and this auxiliary terminal 300 and the series of computation machine program code of specific function can be completed, it is stored in the storage device 24 of this master terminal 200 and the storage device 34 of this auxiliary terminal 300.Function about each module will specifically describe in the flow chart of lower Fig. 4 and Fig. 5.
As shown in Figure 4, it is that the flash lamp control method of the present invention is applied to the flow chart in this master terminal 200.According to different demands, the order of this flow chart step can change, and some step can be omitted.
Step 401, this control module 11 is used for controlling this communicator 21 and sends an addition group message request to the plurality of auxiliary terminal 300.After this communicator 21 receives the information of being invited that the plurality of auxiliary terminal 300 returns, perform step 402.
Step 402, this control module 11 produces a photosensitive request signal, and control this communicator 21 this photosensitive request signal is sent to the plurality of auxiliary terminal 300, sense this person taken picture 100 intensity of illumination under current light environment respectively and produce corresponding optical parametric triggering the plurality of auxiliary terminal 300.
Step 403, this control module 11 controls this photographic head 231 and this person taken picture 100 is focused, and controls this photo-sensitive cell 232 according to this photosensitive request signal and sense the intensity of illumination of a focusing area and produce corresponding optical parametric.
Step 404, the distance between this acquisition module 12 obtains the optical parametric of the plurality of auxiliary terminal 300 return, this photo-sensitive cell 232 senses optical parametric and each terminal 200,300 and this person taken picture 100.
In one embodiment, this acquisition module 12 obtains the step of the distance between each terminal 200,300 and this person taken picture 100 particularly as follows: this control module 11 produces a distance measurement request signal, and control this photographic head 231 and estimate the distance between this master terminal 200 and this person taken picture 100 from this focusing area, or the range unit (not shown) controlling this master terminal 200 estimates the distance between this master terminal 200 and this person taken picture 100.This control module 11 also controls this communicator 21 and this distance measurement request signal is sent to the plurality of auxiliary terminal 300, senses the distance between the plurality of auxiliary terminal 300 and this person taken picture 100 respectively triggering the plurality of auxiliary terminal 300.
In another embodiment, this control module 11 produces a positioning request signal, and the positioner (not shown) controlling this master terminal 200 positions the position coordinates of this master terminal 200 and the position coordinates according to this person taken picture 100 of position estimation between this master terminal 200 and this person taken picture 100.This control module 11 also controls this communicator 21 and this positioning request signal is sent to the plurality of auxiliary terminal 300, positions the position coordinates of the plurality of auxiliary terminal 300 respectively triggering the plurality of auxiliary terminal 300.This acquisition module 12 position coordinates according to each terminal 200,300 and this person taken picture 100, calculates the distance between each terminal 200,300 and this person taken picture 100 by existing location algorithm.
Step 405, distance between optical parametric and each terminal 200,300 and this person taken picture 100 that this computing module 13 senses according to each terminal 200,300, utilize existing AE algorithm or a flash light intensity calculation procedure to calculate the flash lamp driving current value of each terminal 200,300 and the time of exposure of flash duration and this photographic head 231, and by this communicator 21, corresponding flash lamp driving current value and flash duration are sent to corresponding auxiliary terminal 300.Wherein, this flash lamp driving current value is for controlling the brightness of flash lamp.
Step 406, this control module 11 is additionally operable to take pictures and control this photographic head 231 with this time of exposure after control signal and be exposed taking pictures to this person taken picture 100 receiving one, produce a flash control signal simultaneously and control this communicator 21 by this flash control signal synchronized transmission to the plurality of auxiliary terminal 300, thus respectively to drive flash lamp 233 luminescence in process is taken pictures in this exposure of electric current and the plurality of auxiliary terminal 300 of flash duration Synchronization Control and this master terminal 200 accordingly, such that it is able to photograph this person taken picture 100 image after the flash lighting of multiple terminals.
As it is shown in figure 5, be that the flash lamp control method of the present invention is applied to the flow chart in this auxiliary terminal 300.According to different demands, the order of this flow chart step can change, and some step can be omitted.
Step 501, this control module 11, when this communicator 31 receives and adds group's message request from the one of this master terminal 200, returns one and is invited information to this master terminal 200.
Step 502, this control module 11 is when this communicator 31 receives the photosensitive request signal from this master terminal 200, control this photo-sensitive cell 32 sense the intensity of illumination of this person taken picture 100 and produce corresponding optical parametric, and control this communicator 31 this optical parametric is returned to this master terminal 200.
Step 503, this control module 11 is when this communicator 31 receives the distance measurement request signal from this master terminal 200, control a range unit (not shown) of this auxiliary terminal 300 and measure the distance between this auxiliary terminal 300 and this person taken picture 100, and control this communicator 31 this distance is returned to this master terminal 200.
In another embodiment, this control module 11 is when this communicator 31 receives the positioning request signal from this master terminal 200, the positioner (not shown) controlling this auxiliary terminal 300 positions the position coordinates of this auxiliary terminal 300, and controls this communicator 31 this position coordinates returns to this master terminal 200.
Step 504, this acquisition module 12 obtains the flash lamp driving current value from this master terminal 200 and the flash duration that this communicator 31 receives.
Step 505, this control module 11, when receiving the flash control signal from this master terminal 200, controls this flash lamp 33 with this driving electric current and flash duration luminous.
Flash lamp control system provided by the invention and method, by adopting multiple mobile terminal light-metering to promote the accuracy of light-metering around person taken picture, and adopt multiple mobile terminal synchronization light filling to promote scene illumination brightness and to ensure the illumination luminance balance of person taken picture, thus the light exposure providing enough to image of taking pictures, improve shooting effect.
Finally it should be noted that, above example is only in order to illustrate technical scheme and unrestricted, although the present invention being described in detail with reference to preferred embodiment, it will be understood by those within the art that, technical scheme can be modified or equivalent replacement, without deviating from the spirit and scope of technical solution of the present invention.
Claims (11)
1. a flash lamp control system, run in a master terminal, this master terminal and the plurality of auxiliary terminal are positioned at around a person taken picture, this master terminal includes a communicator and an imaging device, this imaging device includes a photographic head, a photo-sensitive cell and a flash lamp, it is characterised in that: this system includes:
One controls module, is used for producing a photosensitive request signal and control this communicator this photosensitive request signal is sent to the plurality of auxiliary terminal, senses the intensity of illumination of this person taken picture respectively and produces corresponding optical parametric triggering the plurality of auxiliary terminal；
This control module is additionally operable to control this photographic head and this person taken picture is focused, and controls the intensity of illumination of this photosensitive elements sense one focusing area according to this photosensitive request signal and produce corresponding optical parametric；
One acquisition module, for obtaining optical parametric that the plurality of auxiliary terminal returns, distance between this photosensitive elements sense optical parametric and each terminal and this person taken picture that arrive；
One computing module, for according to each terminal senses to optical parametric and each terminal and this person taken picture between distance calculate flash lamp driving current value and the flash duration of each terminal, and by this communicator, corresponding flash lamp driving current value and flash duration are sent to corresponding auxiliary terminal；And
This control module is additionally operable to take pictures and control this photographic head after control signal and be exposed taking pictures to this person taken picture receiving one, produce a flash control signal simultaneously and control this communicator by this flash control signal synchronized transmission to the plurality of auxiliary terminal, thus respectively to drive flash lamp luminescence in process is taken pictures in this exposure of electric current and the plurality of auxiliary terminal of flash duration Synchronization Control and this master terminal accordingly.
2. the system as claimed in claim 1, it is characterised in that: this computing module be additionally operable to according to each terminal senses to optical parametric and each terminal and this person taken picture between distance calculate the time of exposure of this photographic head；And
This control module is additionally operable to control this photographic head according to this control signal of taking pictures with this time of exposure and is exposed taking pictures to this person taken picture.
3. the system as claimed in claim 1, it is characterised in that: this control module is additionally operable to produce a distance measurement request signal, and controls this photographic head and estimate the distance between this master terminal and this person taken picture from this focusing area；And
This control module also controls this communicator and this distance measurement request signal is sent to the plurality of auxiliary terminal, senses the distance between the plurality of auxiliary terminal and this person taken picture respectively triggering the plurality of auxiliary terminal.
4. system as claimed in claim 3, it is characterized in that: this control module is additionally operable to control this communicator and sends an addition group message request to multiple auxiliary terminals, and after this communicator receives the information of being invited that the plurality of auxiliary terminal returns, produce this photosensitive request signal.
5. the system as claimed in claim 1, it is characterized in that: this control module is additionally operable to produce a positioning request signal, and the positioner controlling this master terminal positions the position coordinates of this master terminal and the position coordinates according to this person taken picture of position estimation between this master terminal and this person taken picture；
This control module is additionally operable to control this communicator and this positioning request signal is sent to the plurality of auxiliary terminal, positions the position coordinates of the plurality of auxiliary terminal respectively triggering the plurality of auxiliary terminal；And
This acquisition module is additionally operable to the position coordinates according to each terminal and this person taken picture and calculates the distance between each terminal and this person taken picture.
6. a flash lamp control method, it is applied in a master terminal, this master terminal and the plurality of auxiliary terminal are positioned at around a person taken picture, this master terminal includes a communicator and an imaging device, this imaging device includes a photographic head, a photo-sensitive cell and a flash lamp, it is characterised in that: the method comprising the steps of:
Produce a photosensitive request signal and control this communicator this photosensitive request signal is sent to the plurality of auxiliary terminal, sense the intensity of illumination of this person taken picture respectively and produce corresponding optical parametric triggering the plurality of auxiliary terminal；
Control this photographic head this person taken picture is focused, and control the intensity of illumination of this photosensitive elements sense one focusing area according to this photosensitive request signal and produce corresponding optical parametric；
Obtain optical parametric that the plurality of auxiliary terminal returns, distance between this photosensitive elements sense optical parametric and each terminal and this person taken picture that arrive；
According to each terminal senses to optical parametric and each terminal and this person taken picture between distance calculate flash lamp driving current value and the flash duration of each terminal, and by this communicator, corresponding flash lamp driving current value and flash duration are sent to corresponding auxiliary terminal；And
Take pictures and control this photographic head after control signal receiving one and be exposed taking pictures to this person taken picture, produce a flash control signal simultaneously and control this communicator by this flash control signal synchronized transmission to the plurality of auxiliary terminal, thus respectively to drive flash lamp luminescence in process is taken pictures in this exposure of electric current and the plurality of auxiliary terminal of flash duration Synchronization Control and this master terminal accordingly.
7. method as claimed in claim 6, it is characterised in that: further comprise the steps of:
According to each terminal senses to optical parametric and each terminal and this person taken picture between distance calculate the time of exposure of this photographic head；And
Control this photographic head according to this control signal of taking pictures with this time of exposure this person taken picture is taken pictures.
8. method as claimed in claim 6, it is characterised in that: obtain the step of distance between each terminal and this person taken picture particularly as follows:
Produce a distance measurement request signal and control this photographic head from this focusing area, estimate the distance between this master terminal and this person taken picture；And
Control this communicator and this distance measurement request signal is sent to the plurality of auxiliary terminal, sense the distance between the plurality of auxiliary terminal and this person taken picture respectively triggering the plurality of auxiliary terminal.
9. a flash lamp control system, runs in an auxiliary terminal, and this master terminal and the plurality of auxiliary terminal are positioned at around a person taken picture, and each auxiliary terminal includes a communicator, a photo-sensitive cell and a flash lamp, it is characterised in that: this system includes:
One controls module, during for receiving the photosensitive request signal from this master terminal at this communicator, control the intensity of illumination of this person taken picture of this photosensitive elements sense and produce corresponding optical parametric, and controlling this communicator this optical parametric is returned to this master terminal；
One acquisition module, for obtaining the flash lamp driving current value from this master terminal and the flash duration that this communicator receives；And
This control module is additionally operable to when receiving the flash control signal from this master terminal, controls this flash lamp with this driving electric current and flash duration luminous.
10. system as claimed in claim 9, it is characterized in that: this control module is additionally operable to when this communicator receives the distance measurement request signal from this master terminal, the distance between this auxiliary terminal and this person taken picture measured by the range unit controlling this auxiliary terminal, and this distance is returned to this master terminal.
11. system as claimed in claim 9, it is characterised in that: this control module is additionally operable to, when this communicator receives and adds group's message request from the one of this master terminal, return one and be invited information to this master terminal.
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