CN109618472A - Lamp light control method and system - Google Patents
Lamp light control method and system Download PDFInfo
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- CN109618472A CN109618472A CN201810779890.9A CN201810779890A CN109618472A CN 109618472 A CN109618472 A CN 109618472A CN 201810779890 A CN201810779890 A CN 201810779890A CN 109618472 A CN109618472 A CN 109618472A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
Abstract
This application discloses a kind of lamp light control method and systems, and described method includes following steps: at least one receiver is used with controller and is wirelessly communicated；And at least one receiver receives the parameter setting order sent from controller；Parameter setting order is used to be arranged the lighting programmers for the lighting fixture connecting with each receiver；Wherein, controller is connected with equipment is calculated, and the illumination parameter of calculating equipment background image for identification, and determines parameter setting order according to the illumination parameter of background image；The parameter setting order received is converted to the order for meeting the predetermined format of lighting fixture by each receiver, and the order for meeting the predetermined format of lighting fixture is sent to corresponding lighting fixture, to adjust the lighting programmers of lighting fixture；Wherein, each receiver and corresponding lighting fixture wired connection.The application realizes the purpose of the luminous lighting programmers of quick and convenient setting lighting fixture, improves user's operation experience.
Description
Technical field
This application involves wireless control field more particularly to a kind of lamp light control method and systems.
Background technique
The photography of profession, other than needing the filming apparatus (for example, camera) of profession, it is also necessary to some assisted tomography tools
(for example, the lighting fixtures such as flash lamp, light compensating lamp), in traditional studio's shooting, it usually needs photographer stands before person taken picture
Using a camera and multiple groups lighting fixture is cooperated to be shot, to reach the shooting effect of anticipation.In shooting personage and back
When scape synthesizes the photo of this type, the shooting effect of photo is determined by the fusion degree of figure and ground, and the two is melted
Conjunction degree is then closely related with the lighting programmers of lighting fixture.
Currently, in the prior art, generally use wirelessly draw sudden strain of a muscle, PC line draws sudden strain of a muscle and light draws the modes such as sudden strain of a muscle and realizes and fills to light
That sets draws sudden strain of a muscle control, and needs the adjusting by being arranged on lighting fixture fuselage to revolve the adjusting of the lighting programmers of lighting fixture
Button is come lighting programmers such as the power that changes lighting fixture, under normal circumstances, when shooting usually using multiple groups lighting fixture,
In, there are some lighting fixtures to be often arranged on eminence, if manually adjusted, is inconvenient.
For it is above-mentioned in the prior art, the cumbersome and inconvenient problem when adjusting the lighting programmers of lighting fixture,
Currently no effective solution has been proposed.
Summary of the invention
To solve the above-mentioned problems, present applicant proposes a kind of lamp light control method, method includes the following steps: at least one
A receiver is used with controller and is wirelessly communicated；And the reception of at least one receiver is set from the parameter that controller is sent
Set order；Parameter setting order is used to be arranged the lighting programmers for the lighting fixture connecting with each receiver；Wherein, controller with
It calculates equipment to be connected, and calculates the illumination parameter of equipment background image for identification, and true according to the illumination parameter of background image
Determine parameter setting order；The parameter setting order received is converted to the predetermined format for meeting lighting fixture by each receiver
Order, and the order for meeting the predetermined format of lighting fixture is sent to corresponding lighting fixture, to adjust the lamp of lighting fixture
Optical parameter；Wherein, each receiver and corresponding lighting fixture wired connection.
In a kind of example, the parameter setting order received is converted in each receiver and meets the pre- of lighting fixture
The order for the formula that fixes, and the order for meeting the predetermined format of lighting fixture is sent to corresponding lighting fixture, to adjust light
After the lighting programmers of device, method include: receiver receive from draw glitch transmitter transmitting draw glitch, wherein
Draw glitch transmitter for emit draw glitch, and be connected on filming apparatus by hot shoe；Draw glitch for detecting
To filming apparatus shooting instruction in the case where, trigger the lighting fixture that connect with each receiver so that lighting fixture according to
The corresponding lighting programmers of parameter setting order carry out luminous.
In a kind of example, uses at least one receiver with controller and wirelessly communicate；And at least one connects
It receives device and receives the method before the parameter setting order that controller is sent further include: controller, which receives, calculates what equipment was sent
One group of parameter setting order, wherein corresponding one communicated with controller of each parameter setting order in one group of parameter setting order
A receiver；Controller determines the corresponding receiver mark of each parameter setting order, and root according to one group of parameter setting order
It is identified according to receiver, relevant parameter setting command is sent in corresponding receiver.
In a kind of example, uses at least one receiver with controller and wirelessly communicate；And at least one connects
It receives device and receives the method before the parameter setting order that controller is sent further include: controller, which receives, calculates what equipment was sent
One group of parameter setting order, wherein corresponding one communicated with controller of each parameter setting order in one group of parameter setting order
A receiver；Relevant parameter setting command is sent to accordingly by controller according to one group of parameter setting order, according to predetermined order
In receiver.
In a kind of example, the illumination parameter of background image includes at least following one or more: multiple in background image
The corresponding pixel value of pixel, the corresponding normal direction information of multiple pixels and material coefficient, according to the multiple of background image
The direction vector set that the corresponding direction vector of light source direction obtains.
In a kind of example, the illumination parameter of equipment identification background image is calculated, and according to the illumination parameter of background image
Determine that parameter setting order includes: for the first pixel in multiple pixels in background image, in each of direction vector set
Corresponding pixel value summation on direction, the value that summation is obtained as the pixel value of the first pixel, thus establish one with
The corresponding intensity of illumination in multiple light sources direction of first pixel is the linear equation of unknown number；Sample the multiple of background image
Pixel, to obtain one using the corresponding intensity of illumination in multiple light sources direction as the system of linear equations of unknown number, by asking
System of linear equations obtains the corresponding intensity of illumination in multiple light sources direction, wherein intensity of illumination is for determining that parameter setting is ordered
It enables.
In a kind of example, linear equation are as follows:Wherein, p is pair
A pixel in multiple pixels of background image sampling, i.e. the first pixel；C is R, G, channel B；IpFor the pixel value of pixel p；
IpIt (c) is pixel value of the pixel p on the channel c；NdFor direction vector set；Q be direction vector set in a direction to
Amount；LqFor the corresponding intensity of illumination of q direction vector；ApFor the material coefficient of pixel p, also known as the diffusing reflection coefficient of pixel p；Ap(c)
Value for pixel p in material image A in the channel c；npFor the normal vector of pixel p；<q,np> for q, npAsk interior machine operation.
In a kind of example, method further include: controller adjusts the bat of floor according to the illumination parameter of background image
Take the photograph information；Wherein, photographing information includes at least one following: the range information of the person of being taken and filming apparatus, filming apparatus
The incidence angle information for the light that elevation information, the location information of each lighting fixture, each lighting fixture issue.
In a kind of example, lighting programmers include at least one following: the position of each lighting fixture, height, and every
A lighting fixture whether shine, fluorescent lifetime, light emission direction and issue intensity of light, light colour temperature.
On the other hand, the application also proposed a kind of lamp light control method, comprising: identify the illumination parameter of background image,
And parameter setting order is determined according to the illumination parameter of background image, wherein parameter setting order is for being arranged and each reception
The lighting programmers of the lighting fixture of device connection；
Using wirelessly to the transmission parameter setting order of at least one receiver；Wherein, each receiver will receive
To parameter setting order be converted to the predetermined format for meeting the order of the predetermined format of lighting fixture, and lighting fixture being met
Order be sent to corresponding lighting fixture, to adjust the lighting programmers of lighting fixture；Wherein, each receiver and corresponding light
Device wired connection.
In a kind of example, method further include: receiver receive from draw glitch transmitter transmitting draw glitch,
In, draw glitch transmitter for emit draw glitch, and be connected on filming apparatus by hot shoe；Draw glitch for examining
In the case where the shooting instruction for measuring filming apparatus, the lighting fixture connecting with each receiver is triggered, so that lighting fixture root
It is carried out according to the corresponding lighting programmers of parameter setting order luminous.
On the other hand, the application also proposed a kind of lamp light control system, comprising: controller, using wirelessly with
At least one receiver communication, for sending parameter setting order to each receiver, wherein parameter setting order is for being arranged
The lighting programmers for the lighting fixture being connect with each receiver；Equipment is calculated, is connected with controller, for identification background image
Illumination parameter, and parameter setting order is determined according to the illumination parameter of background image；At least one receiver, for setting parameter
It sets order and is converted to the order for meeting the predetermined format of lighting fixture, and the order that will meet the predetermined format of lighting fixture is sent
To corresponding lighting fixture, to adjust the lighting programmers of lighting fixture；Wherein, each receiver and the wired company of corresponding lighting fixture
It connects.
In a kind of example, system further include: draw glitch transmitter, is connected on filming apparatus by hot shoe, and it is every
A receiver draws glitch using wirelessly communicating, for emitting, wherein draws glitch for detecting filming apparatus
Shooting instruction in the case where, the lighting fixture that connect with each receiver is triggered, so that lighting fixture is ordered according to parameter setting
Corresponding lighting programmers are enabled to carry out luminous.
It is proposed that signal light control mode can be brought the following benefits by the application:
Controller is used and is wirelessly communicated at least one receiver, and sends parameter at least one receiver
Setting instruction, after each receiver receives parameter setting order, the parameter setting order received is converted to and meets light
The order of the protocol format of device, and it is sent to corresponding lighting fixture, so that lighting fixture is corresponding according to parameter setting order
Lighting programmers carry out luminous so that the control to lighting fixture is not limited by lighting fixture position, reached quick and convenient
The purpose of the luminous lighting programmers of lighting fixture is set, to realize the technical effect for improving user's operation experience.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:
Fig. 1 is a kind of lamp light control system application scenarios schematic diagram provided by the embodiments of the present application；
Fig. 2 is a kind of lamp light control system schematic diagram provided by the embodiments of the present application；
Fig. 3 is a kind of lamp light control method flow chart provided by the embodiments of the present application.
Specific embodiment
For the clearer general idea for illustrating the application, carry out in an illustrative manner with reference to the accompanying drawings of the specification detailed
It describes in detail bright.
Fig. 1 is a kind of lamp light control system application scenarios schematic diagram provided by the embodiments of the present application, as shown in Figure 1, right
The person of being taken before curtain 160 (for example, projection screen used in digital studio, for background image to be projected to curtain)
When being shot, it usually needs the lighting fixtures such as some flash lamps, light compensating lamp are (for example, lamp 101, lamp 102 ... shown in Fig. 1
Lamp 10n) it is illuminated to carry out auxiliary, especially, when being synthesized the image for the person of being taken and background image, to light
The control of device requires more accurate.In order to enable the image for the person of being taken merges well with background image, needs to adjust and work as
The light that each lighting fixture issues in preceding photographed scene, so that the lamp of the lighting effects of present filming scene and background image
Light effect matches.
It, can also be with it should be noted that photographed scene shown in FIG. 1 can be indoor scene (for example, studio shooting)
It is outdoor scene (for example, location shooting), according to scene difference, the quantity of used lighting fixture and position can be different,
Lamp light control system provided by the embodiments of the present application can be used for the shooting of still image (for example, to be taken shown in Fig. 1
Person takes pictures), it can be used for the shooting (for example, for the person's of being taken recorded video shown in Fig. 1) of dynamic image.
It is easy it is noted that in the prior art, when needing to adjust the parameter of each lighting fixture, photographer is needed to pass through
Manually mode adjusts the rotation of the adjusting on each lighting fixture (for example, lamp 101 shown in Fig. 1, lamp 102 ... lamp 10n) fuselage
For button come parameters such as the power that changes lighting fixture, this mode is not only inconvenient for operation, but also can not believe the parameter after adjusting
Breath is synchronized to software end and is analyzed.
Optionally, under scene shown in Fig. 1, Fig. 2 is a kind of lamp light control system signal provided by the embodiments of the present application
Figure, as shown in Fig. 2, the embodiment of the present application is in each lighting fixture (for example, lighting fixture 101, lighting fixture 101 ... light dress
Set 10n) on connect a wireless receiver (receiver 111 as shown in Figure 2, receiver 112 ... receiver 11n), in turn
By wireless receiver, the parameter setting order sent from controller 120 is wirelessly received, wherein parameter setting
Order the lighting programmers of the lighting fixture for each receiver connection to be arranged.
Optionally, lighting programmers include but is not limited to following at least one: the position of each lighting fixture, height, and
Each lighting fixture whether shine, fluorescent lifetime, light emission direction and issue intensity of light, light colour temperature.
It is connect as shown in Fig. 2, parameter setting order can be wirelessly sent to by controller 120 with lighting fixture
Wireless receiver (receiver 111 as shown in Figure 2, receiver 112 ... receiver 11n), it is real to pass through the application as a result,
Apply example, may be implemented by a controller and meanwhile control multiple lighting fixtures lighting programmers purpose.
In addition, as shown in Fig. 2, a controller 120 and multiple wireless receivers (i.e. receiver 111, receiver 112 ...
Receiver 11n) it communicates, each wireless receiver is connect again (for example, receiver 111 and lighting fixture 101 with a lighting fixture
Connection), in fact, illustrating only the situation that a receiver is connect with a lighting fixture in Fig. 2, but the application protection scope
Situation including but not limited to shown in Fig. 2, i.e., other situations that each receiver can be connect with multiple lighting fixtures.
Controller 120 shown in Fig. 2 can be any one control equipment for sending parameter setting order, the control
Control equipment can be the equipment with equipment wired connection is calculated, and be also possible to a kind of remote control equipment.
It should be noted that lamp light control system is other than being arranged flash power, it is also necessary to guarantee that flash lamp is being clapped
It can be timely responded to when taking the photograph.In order to realize so that each lighting fixture quick response, so that multiple lighting fixture high-speed synchronous, with
The wireless receiver of each lighting fixture connection can also be carried out wireless communication with glitch transmitter 140 is drawn, by drawing twinkle SM
Glitch is drawn in the transmission of number transmitter 140, to trigger each lighting fixture, so that each lighting fixture is set according to the parameter received
Set the lighting programmers for including in order carry out it is luminous.
Optionally, for send draw the glitch transmitter that draws of glitch can be by the hot shoe 151 on filming apparatus 150
It is connected on filming apparatus 150, wherein draw glitch transmitter 140 in the case where detecting the shooting instruction of filming apparatus,
Draw glitch to each receiver (i.e. receiver 111, receiver 112 ... receiver 11n) transmission.With filming apparatus be camera,
For lighting fixture is flash lamp, no matter which kind of camera, the bosom contact of hot shoe is all flash lamp triggering contact, if using
Flash lamp can generate a flash lamp trigger signal when pressing on hot shoe behind the door fastly.There is flash lamp touching when detecting on hot shoe
When signalling, draws glitch transmitter and transmit wireless signals to receiver, trigger flashing flick of lamp at once.
As a kind of optional embodiment, in the case where filming apparatus is intelligent filming apparatus, above-mentioned shooting instruction can
To be any one following instruction issued by the person of being taken: phonetic order, body-sensing instruction, expression instruction.I.e. filming apparatus exists
Detect that the person of being taken issues voice and connects in the case where perhaps making some limb action or making certain expressions to each
It receives device transmission and draws glitch, and trigger filming apparatus and shot.
The glitch transmitter that draws in each embodiment of the application wirelessly draws that dodge the effect of device transmitting terminal identical with common, as long as
Shutter is pressed, draws glitch transmitter and just works.Draw and be not associated with and do not interfere with each other between sudden strain of a muscle and parameter setting, i.e., can lead at any time
Software setting parameter is crossed, camera shutter can be pressed at any time and draw sudden strain of a muscle.
It is easy it is noted that filming apparatus 150 can be connect with controller 120 in Fig. 2, it can not also be with controller 120
Connection, in the case that filming apparatus 150 is connect with controller 120, the parameter that can be provided according to controller 120 is shot；When
Under filming apparatus 150 and the unconnected situation of controller 120, it can be shot according to preconfigured parameter.Certainly, when shooting fills
In the case where being set to the smart machines such as mobile phone, plate, filming apparatus 150 and controller 120 calculate equipment 130, draw glitch hair
Emitter 140 is integrated into an equipment as controlling terminal, alternatively, by controller 120 in Fig. 2, calculating function performed by equipment 130
It can integrate in filming apparatus 150, as an intelligent filming apparatus, wirelessly control multiple lighting fixtures,
And it is shot.
For example, in the case where controlling terminal is mobile phone, by mobile phone to the receiver (receiver being connect with lighting fixture
It is connected on corresponding lighting fixture by private jack；Wherein, the appearance structure of private jack is identical as USB interface, using lamp
The protocol communication of electro-optical device) parameter setting instruction is sent, so that each lighting fixture is corresponding according to parameter setting order is received
Lighting programmers carry out luminous, and pass through the shooting that mobile phone carries out photo or video.Optionally, parameter setting order can be by
Mobile phone identifies background image, obtains the lighting programmers for controlling lighting fixture in present filming scene, and generate
Order.
In order to meet user to the diversified demand of background, either studio shooting or location shooting, can incite somebody to action
The image or video of shooting are merged with existing background, to meet user to the diversified demand of background.But it is taken
The quality of the fusion degree of image and background directly determines the photo of shooting or the authenticity effect of video.Influence is taken
One key factor of person's image and background fusion degree is then the lamps such as the flash lamp used when shooting the image for the person of being taken
Whether the lighting programmers of the lighting fixtures such as the lighting programmers of electro-optical device and the flash lamp that uses when shooting background match.Exist as a result,
It, can be by identifying the images such as the obtained illumination patterns of background image when controlling the lighting fixture in present filming scene
Information generates the lighting programmers for lighting fixture in present filming scene, to make the intensity of illumination distribution of present filming scene
It is more matched in the intensity of illumination distribution of background image.
In the prior art, photographer is depended primarily on to the selection of Flashing Light Parameters (such as angle, power and time for exposure)
Observation and analysis ability to shooting background, this produces biggish test to the technical level of photographer.This mode is direct
Often there are biggish errors with expection for the photo shot, and on the one hand result in the fusion degree of subject and background
Low, authenticity is bad；On the other hand lead to the heavy workload of photo post-processing, fabrication cycle is long.
It is used as a kind of optional embodiment as a result, controller 120 is to (i.e. receiver 111, connects with each receiver in Fig. 2
Receive device 112 ... receiver 11n) send parameter setting order can be by identify background image illumination parameter generate
Order, wherein the illumination parameter of background image includes at least: the corresponding pixel value of multiple pixels, institute in background image
State the corresponding normal direction information of multiple pixels and material coefficient, according to the corresponding direction in multiple light sources direction of background image to
The direction vector set measured.
In a kind of optional embodiment, background image can be decomposed by texture map by intrinsic image decomposition algorithm
Picture and light image, material image are also known as intrinsic image or reflected image, and referring to can under the illumination condition of variation
The image section to remain unchanged.That is, it is the image section unrelated with illumination that material image is corresponding.Light image is also known as
It is the image for reflecting original image (i.e. input picture) light conditions for irradiation figure or bloom figure.The material image packet of background image
The corresponding material coefficient of each pixel containing the background image.The light image of background image includes each pixel of the background image
Intensity of illumination.
Optionally, by the multiple pixels of background image uniform sampling, the corresponding picture of available multiple pixel
Element value.Then according to the material image of background image, the corresponding material coefficient of multiple pixels of available sampling.Three
Uniform sampling multiple directions in dimension space obtain the direction vector set in multiple direction.Finally, being distinguished according to multiple pixel
Corresponding pixel value, direction vector set Nd, the corresponding normal vector of multiple pixel, multiple pixel respectively correspond
Material coefficient, the input picture corresponding intensity of illumination on multiple direction is determined, to obtain the input picture
The illumination patterns of locating scene.
It, can be based on figure as a result, when the illumination parameter by identifying background image generates parameter setting order
As identification technology, the illumination parameter of background image is obtained, determines and is somebody's turn to do according to the illumination parameter of background image based on preset algorithm
The matched parameter setting order of background image.Wherein, it is determining and is being somebody's turn to do according to the illumination parameter of background image based on preset algorithm
When background image matched parameter setting order, it can be implemented by the following steps: for pictures multiple on background image
The first pixel in element, corresponding pixel value summation, the value that summation is obtained are made in all directions of direction vector set
For the pixel value of the first pixel, so that establishing a corresponding intensity of illumination in multiple light sources direction with the first pixel is not
Know several linear equations；The multiple pixels for sampling background image, to obtain one with the corresponding light in multiple light sources direction
It is the system of linear equations of unknown number according to intensity, it is strong by asking system of linear equations to obtain the corresponding illumination in multiple light sources direction
Degree, so that the illumination patterns of scene locating for the background image are obtained, so that the intensity of illumination according to background image determines above-mentioned ginseng
Number setting command.
Wherein, linear equation are as follows:Wherein, p is to Background
A pixel in multiple pixels of picture sampling, i.e. the first pixel；C is R, G, channel B；IpFor the pixel value of pixel p；Ip(c) it is
Pixel value of the pixel p on the channel c；NdFor direction vector set；Q is a direction vector in direction vector set；LqFor q
The corresponding intensity of illumination of direction vector；ApFor the material coefficient of pixel p, also known as the diffusing reflection coefficient of pixel p；ApIt (c) is texture map
As in A pixel p in the value in the channel c；npFor the normal vector of pixel p；<q,np> for q, npAsk interior machine operation.
In above formula, and max (0, < q, np>) take positive number purpose be remove illumination when backlight situation.Lq(c)Ap(c)·
max(0,<q,np>) indicate pixel p in the pixel value of q direction vector.ThenIt indicates
Pixel value the sum of of the pixel p in all directions of sampling.Therefore, the principle of above-mentioned formula is, for appointing in the background image
The pixel value for pixel of anticipating is equal to the sum of the pixel value of all directions vector of uniform sampling.
Based on the above principles, the corresponding pixel value of multiple pixels which will be obtained, generation
Enter to obtain one in above-mentioned formula with LqIt (c) is the system of linear equations of unknown number；Wherein, Lq(c) the direction vector q value in is
It is multiple, and belong to direction vector set Nd.It should be with L by solvingq(c) it is the system of linear equations of unknown number, the difference can be obtained
The intensity of illumination of sample direction, i.e. the scene illumination distribution of acquisition background image.
It is easy it is noted that the quantity for carrying out pixel sampling to background image is more than or equal to it in order to solve above-mentioned formula
To the quantity of the direction vector of three-dimensional space sample direction, i.e. the quantity of sampled pixel is more than or equal to direction in direction vector set
The quantity of vector.
Specifically, after getting a background image, pass through red (R) to background image, green (G), blue (B) three face
Chrominance channel is adjusted, the image of available various colors.Background image is analyzed, the geometry letter of background image is obtained
Breath, by intrinsic image decomposition algorithm, is decomposed into material image and light image for background image, so that the material of background image
Image includes the corresponding material coefficient of pixel each in background image.The light image of background image includes each pixel in background image
Intensity of illumination.
By obtaining multiple pixels to background image uniform sampling, and obtain the corresponding pixel value of each pixel, material system
Number.
Uniform sampling multiple directions in three dimensions obtain the direction vector set N in multiple directiondAfterwards, by upper
Formula solves should be with Lq(c) it is the system of linear equations of unknown number, the intensity of illumination of the difference sample direction can be obtained, that is, be somebody's turn to do
The scene illumination of background image is distributed.
It realizes and is made to after single image illuminant direction estimation by the way that the parameter of flash lamp is arranged through the foregoing embodiment
Subject is consistent with background light source direction, enhances the authenticity of image, effectively reduces the workload of post-processing.
Optionally, as an alternative embodiment, can establish background image direction of illumination database: can deposit in real time
The direction of illumination and parameter setting of corresponding picture are taken, cooperation illumination detection algorithm uses.It is measured using direction of illumination detection algorithm
Parameter can be stored in database for next time use.When selecting a background picture, if having the light of the picture in database
According to bearing data, it can no longer be detected and call directly the parameter in database and operated.Database can also be into simultaneously
Row such as easily increases, deletes, changing, looking at the operation, forms unified effective management to the direction of illumination data of background image, improves entirely
The flexibility of system, convenience.
The embodiment of the present application, by identifying what the illumination parameter generation of background image shone for controlling lighting fixture
Parameter setting order realizes through software and controls the purpose of the lighting programmers of lighting fixture.
It is easy it is noted that when controller 120 is to have the smart machine of image identification function (for example, mobile phone, plate are electric
Brain, laptop, computer etc.) in the case where, controller 120 can be with Direct Recognition background image (including but not limited to
Background image in some background pictures or video) illumination parameter, and corresponding parameter setting is generated according to recognition result and is referred to
It enables；In the case that controller 120 is not have the remote control equipment of image identification function, as shown in Fig. 2, the embodiment of the present application mentions
The lamp light control system of confession can also include: to calculate equipment 130, connect with controller 120, for identification the illumination of background image
Parameter generates corresponding parameter setting instruction according to recognition result, and is sent to controller 120.
It is used as the first optional embodiment as a result, controller 120 shown in Fig. 2 can be with equipment 130 is calculated
One equipment, i.e. controller 120 are smart machine, directly carry out image recognition, and root to background image by controller 120
Parameter setting order is generated according to the information recognized, is wirelessly sent to the wireless receiving connecting with each lighting fixture
Device.
As second of optional embodiment, above controller 120 is the remote control equipment for not having image identification function,
Then controller 120 is connect with equipment 130 is calculated, and calculates equipment 130 to carry out image recognition, and root to background image will pass through
Parameter setting order is generated according to the information recognized, is sent to controller 120, then each come wireless control by controller 120
Lighting fixture.It is easy it is noted that calculating equipment 130 shown in Fig. 2 can be mobile phone, tablet computer, laptop etc.
Any one terminal device.
Further, pass through in the case where calculating equipment 130 and being computer in above-mentioned second of embodiment
In the case that computer identifies to generate the parameter setting order for controlling lighting fixture background image, controller
120 can be connected on USB interface of computer by cable, and be powered by the interface, have USB to turn serial port chip on controller,
The two is communicated according to serial port protocol.It calculates and sets the parameter setting order that machine is sent to controller includes which lighting fixture opened
The two information of the power of the lighting fixture of (for example, flash lamp), Yao Kaiqi.Each lighting fixture can be connect by connected to it
The number of device is received to distinguish.
Herein, it should be further noted that no matter above-mentioned any embodiment is used, in a kind of optional embodiment
In, wireless communication that controller 120 shown in Fig. 2, receiver (receiver 111, receiver 112 ... receiver 11n) use
Mode include but is not limited to it is following any one: WiFi, bluetooth, ZigBee, infrared etc..Optionally, controller can be with reception
It is wirelessly communicated between device by 433MHz.
Embodiment as one preferred, when controller 120 shown in Fig. 2 is sending parameter setting to each receiver
Before order, controller 120 can also obtain the shooting environmental information of floor, and generate parameter according to shooting environmental information
Setting command.It obviously, can be according to the shooting for the illumination parameter and the current shooting scene got that identification background image obtains
Environmental information generates corresponding parameter setting order, so that be taken image and the fused image of background image or video
It is more true.
Background is replaced when shooting different photos, or during shooting video, is obtained according to identification background image
To illumination parameter be real-time change, thus, it is also desirable to the lighting programmers of each lighting fixture are adjusted in real time, for example, light
The parameter informations such as position, the height of device.As a result, as an alternative embodiment, controller 120 can be according to Background
The illumination parameter of picture adjusts the photographing information of floor；Wherein, photographing information includes at least one following: the person of being taken with
The range information of filming apparatus, the elevation information of filming apparatus, the location information of each lighting fixture, each lighting fixture issue
Light incidence angle information.
As shown in Fig. 2, when controller 120 sends parameter setting order to the receiver connecting with lighting fixture, due to
Controller 120 is wirelessly communicated with multiple receivers (i.e. receiver 111, receiver 112 ... receiver 11n), in order to
It realizes while controlling the lighting fixture connecting with multiple receivers and shine, controller 120 can send one group of parameter setting order,
The corresponding receiver communicated with controller 120 of each parameter setting order in one group of parameter setting order, so that with
The lighting fixture of each receiver connection shines according to the corresponding lighting programmers of parameter setting order received.Due to controller
The parameter setting order of 120 lighting fixtures for connecting control with each receiver is based on as one group of parameter setting order
Each parameter setting order is sent to corresponding receiver by the identification information of each receiver, to make to connect with the receiver
The lighting fixture connect shines according to the lighting programmers being arranged in corresponding parameter setting order, substantially increases adjusting lighting programmers
Efficiency.
Specifically, if controller 120 is the remote control equipment for not having image identification function, above controller 120 to
One group of parameter setting order that receiver (i.e. receiver 111, receiver 112 ... receiver 11n) is sent can be to be set by calculating
Standby 130 generation, the method specifically generated is described above, and details are not described herein again；If control equipment has image recognition
The smart machine (for example, mobile phone, tablet computer, laptop, computer etc.) of function, then above controller 120 is to reception
One group of parameter setting order that device (i.e. receiver 111, receiver 112 ... receiver 11n) is sent can be by controller 120
It generates, the method specifically generated is described above, and details are not described herein again.
In a kind of optional embodiment, when controller 120 is received from one group of parameter setting order for calculating equipment
Or after itself generates one group of parameter setting order, controller 120 can be according to one group of parameter setting receive or generation
Order determines the corresponding receiver mark of each parameter setting order, and is identified according to receiver, by relevant parameter setting command
It is sent in corresponding receiver, wherein each receiver is connected on corresponding lighting fixture by private jack；Wherein, dedicated
The appearance structure of socket is identical as USB interface, but does not use usb protocol to communicate, but uses the specialized protocol of lighting fixture logical
Letter.
In another optional embodiment, if the receiver connecting with lighting fixture is arranged according to predetermined order
, then when controller 120 is received from one group of parameter setting order for calculating equipment or itself generates one group of parameter setting
After order, relevant parameter setting command can be sent in corresponding receiver by controller 120 according to predetermined order.
It should be noted that above-mentioned identification information can be the address information or number information of each receiver, Mei Gejie
Receiving device can connect with a lighting fixture, can also connect with multiple lighting fixtures.
In a kind of optional embodiment, it is assumed that the corresponding lighting fixture (for example, flash lamp) of each receiver, according to every
The unique address of a receiver can determine unique lighting fixture, since receiver is direct by hardware interface with lighting fixture
Connection, a receiver are only responsible for sending parameter setting order to a lighting fixture.Optionally, if each receiver and more
In the case where a lighting fixture connection, the lighting programmers of the luminous use of this multiple lighting fixture are identical.
As a kind of optional embodiment, above-mentioned parameter setting command can be power setting order, for a flash lamp,
For flash lamp itself, power just determines brightness, and setting power is bigger, and flash luminance is higher.Light is identified in software
It is made of according to distribution two elements of light source direction and the intensity of light source, the numerical value of the intensity of light source has certain range, watt level
Numerical value also has certain range, the two numerical value are mapped by software by certain algorithm, such as linear operation, thus
The conversion of brightness to power may be implemented.Need software algorithm plus artificial calibration, in actual use to obtain accurate light filling
Effect.
As shown in Fig. 2, ought be connected with lighting fixture (i.e. lighting fixture 101, lighting fixture 102 ... lighting fixture 10n)
Each receiver (i.e. receiver 111, receiver 112 ... receiver 11n) receives the parameter setting from controller 120 and refers to
After order, each receiver (i.e. receiver 111, receiver 112 ... receiver 11n) converts the parameter setting order received
After order for the protocol format for controlling lighting fixture, it is sent to corresponding lighting fixture (i.e. lighting fixture 101, light
Device 102 ... lighting fixture 10n) so that each lighting fixture (for example, lighting fixture 101) (is received by receiver
Device 111) receive from draw glitch transmitter 140 draw glitch in the case where, triggering lighting fixture (for example, light fill
It sets and 101) is shone according to the corresponding lighting programmers of parameter setting order received, to realize quick and convenient setting lighting fixture
The purpose of luminous lighting programmers.
It should be noted that since the communication protocol that lighting fixture (for example, flash lamp) uses is usually by vendors dictate
, thus, since parameter setting order can be the order of customized setting, when receiver is being received from controller 120
Parameter setting order after, need to be converted to parameter setting order into the order for meeting the protocol format of lighting fixture, retransmit
To lighting fixture.
In a kind of optional embodiment, above-mentioned parameter setting command can be indicated with ASCII character or binary mode, above-mentioned
The order for meeting predetermined format can be low and high level signal.
It should be noted that the major function of controller and receiver is all by the program run on single-chip microcontroller therein
It realizes, program can parse command context, and the communication that signal realizes various agreements can be generated.What controller was sent
Order indicates that the program on controller does not process command context with ASCII character or binary mode, only distinguishes order
Be sent to corresponding receiver, received receiver is customized order, but by program be sent to lighting fixture (for example,
Flash lamp) be manufacturer setting agreement specified in order.Receiver receives the order that controller is sent, and such as " P56 " is represented
Power setting is 5.6, and program can be by the command context for judging to receive, and searching the correspondence power stored on single-chip microcontroller is 5.6
Order (referred to meeting the order of the particular protocol of flash lamp manufacturer), program can be exported high later with control single chip computer I/O port
Low level mode generates signal and gives flash lamp control interface, is just realized in this way from custom command to vendors dictate order
Conversion.
As an alternative embodiment, above-mentioned receiver will can only meet the order of the protocol format of lighting fixture
It is sent to lighting fixture, the operation such as parses without carrying out to the order, is used as a kind of optional embodiment as a result, receiver can
The order for meeting the protocol format of lighting fixture is sent to the controller inside lighting fixture, and by inside lighting fixture
Controller resolve command and according to parsing result control lighting fixture work.
In the following, each embodiment of the application is illustrated using lighting fixture as flash lamp, for flash lamp itself,
Power just determines brightness, and setting power is bigger, and flash luminance is higher.Thus, above-mentioned lighting programmers can include at least light and fill
The power parameter set, and above-mentioned parameter setting command is power setting order.
After receiving the parameter setting order for calculating equipment, controller will be by wirelessly successively sending out to several receivers
Send one group of power setting order, include at least open which lighting fixture, and open lighting fixture power the two
Information.Wherein, the power for the lighting fixture being not turned on can be set to 0W.
For example, it is assumed that connected to the controller have 5 receivers, respectively receiver 1, receiver 2, receiver 3, reception
Device 4 and receiver 5, wherein the lighting fixture connecting with each receiver is respectively lighting fixture 1, lighting fixture 2, light dress
3, lighting fixture 4 and lighting fixture 5 are set, is lighted if currently needing to control lighting fixture 1, lighting fixture 3, lighting fixture 5, and
Respective power is 5W, 10W, 15W, and lighting fixture 2 and lighting fixture 4 are not lighted, then one group of parameter setting that controller is sent
Order can be with are as follows: P1=5, P2=0, P3=10, P4=0, P5=15.
It should be noted that above-mentioned identification information can be the address information or number information of each receiver, Mei Gejie
Receiving device can connect with a lighting fixture, can also connect with multiple lighting fixtures.
In a kind of optional embodiment, it is assumed that the corresponding lighting fixture (for example, flash lamp) of each receiver, according to every
The unique address of a receiver can determine unique lighting fixture, since receiver is direct by hardware interface with lighting fixture
Connection, a receiver are only responsible for sending parameter setting order to a lighting fixture.Optionally, if each receiver and more
In the case where a lighting fixture connection, the luminous lighting programmers of this multiple lighting fixture are identical.
In a kind of optional embodiment, above-mentioned parameter setting command can be indicated with ASCII character or binary mode, above-mentioned
The order for meeting predetermined format can be low and high level signal.
It is easy it is noted that the major function of controller and receiver is all by the program run on single-chip microcontroller therein
It realizes, program can parse command context, and the communication that signal realizes various agreements can be generated.What controller was sent
Order indicates that the program on controller does not process command context with ASCII character or binary mode, only distinguishes order
Be sent to corresponding receiver, received receiver is customized order, but by program be sent to flash lamp be flash of light
Lamp manufacturer sets and orders specified in agreement.Receiver receives the order that controller is sent, such as " P56 " represent power setting as
5.6, program can search order that the correspondence power stored on single-chip microcontroller is 5.6 (herein by judging the command context that receive
Refer to the order for meeting the particular protocol of flash lamp manufacturer), program can export the side of low and high level later with control single chip computer I/O port
Formula generates signal and gives flash lamp control interface, just realizes the conversion from custom command to vendors dictate order in this way.
According to the embodiment of the present application, a kind of lamp light control method embodiment is provided, this method embodiment can be applied to
Any one lighting fixture, including but not limited to flash lamp, light compensating lamp etc..
Fig. 3 is a kind of lamp light control method flow chart provided by the embodiments of the present application, as shown in figure 3, this method includes such as
Lower step:
Step S301 calculates the illumination parameter that equipment obtains background image, wherein illumination parameter includes at least: Background
As in the corresponding pixel value of multiple pixels, the corresponding normal direction information of multiple pixels and material coefficient, according to Background
The direction vector set that the corresponding direction vector in multiple light sources direction of picture obtains.
Specifically, the calculating equipment in above-mentioned steps 301 include but is not limited to it is following any one: mobile phone, tablet computer,
Laptop, computer etc.；Optionally, it can also be the smart camera with image identification function.
Step S302 calculates equipment based on preset algorithm and determines parameter setting order according to the illumination parameter of background image.
On how to determine that the implementation of parameter setting order has been described in system embodiment according to illumination parameter, herein no longer
It repeats.
Step S303, controller, which receives, calculates the parameter setting order that equipment is sent, and is sent to and communicates with controller
At least one receiver, wherein parameter setting order is used to be arranged the lighting programmers for the lighting fixture connecting with each receiver,
Controller is used at least one receiver and is wirelessly communicated.
Specifically, controller and calculating equipment can be an equipment, can also be with independent two equipment, wherein control
Device can be any one controlling terminal of the lighting programmers for controlling lighting fixture, can be smart machine, is also possible to
Remote control equipment.It when controller and calculates in the case that equipment is two equipment, controller and calculates equipment and can be wired (example
Such as, controller is connect by USB interface with computer), it is also possible to be wirelessly connected (for example, controller passes through WiFi and mobile phone
Connection).Since controller is communicated with multiple receivers, for controlling the lighting fixture connecting with each receiver, control as a result,
Device, which can receive, calculates one group of parameter setting order that equipment is sent, wherein each corresponding receiver of parameter setting order,
So that the corresponding light of the parameter setting order controlled with the lighting fixture of receiver connection is received according to the receiver is joined
Number shines.
Step S304 receives the parameter setting sent from controller with each receiver of lighting fixture wired connection and orders
It enables, and the parameter setting order received is converted to the order for meeting the protocol format of lighting fixture, and be sent to corresponding
Lighting fixture；
Specifically, each lighting fixture is wirelessly communicated by receiver with controller, so that photographer's (example
Such as, photographer) lighting programmers of multiple lighting fixtures in controller wireless control present filming scene can be passed through.
Step S305, lighting fixture by corresponding receiver receive from draw glitch transmitter transmission draw twinkle SM
Number, and shine wherein according to the corresponding lighting programmers of parameter setting order received, receiver is also used to receive and come from
That draws the transmission of glitch transmitter draws glitch, wherein and draw glitch and is used to trigger the lighting fixture connecting with each receiver,
And it is luminous to carry out lighting fixture according to the corresponding lighting programmers of parameter setting order.
Specifically, when photographer sends parameter setting instruction to the receiver connecting with each lighting fixture by controller
Afterwards, the receiver connecting with each lighting fixture, which is converted to the parameter setting instruction received, meets lighting fixture protocol format
Order, and corresponding lighting fixture is sent to, so that each lighting fixture is received by receiver from drawing glitch hair
After what emitter was sent draws glitch, carried out according to the corresponding lighting programmers of parameter instruction order received luminous.
From the foregoing, it will be observed that identifying the illumination parameter of background image by calculating equipment, and raw according to the illumination parameter recognized
At corresponding for controlling the parameter setting instruction of lighting fixture in current shooting scene, and by wirelessly and at least
The controller of one receiver communication sends the parameter setting order to each receiver, and each receiver, which receives, comes from controller
Parameter setting order, and the parameter setting order received is converted to and meets the order of predetermined format and is sent to and each connects
Receive device connection lighting fixture, and the receiver being connect with lighting fixture receive from draw glitch transmitter transmission draw
In the case where glitch, triggering lighting fixture shines according to the lighting programmers that parameter setting order is arranged, and has reached quick and convenient
The purpose of the luminous lighting programmers of lighting fixture is set, to realize the technical effect for improving user's operation experience, and then is solved
It has determined in the prior art, the cumbersome and inconvenient technical problem when adjusting the lighting programmers of lighting fixture.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for system reality
For applying example, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to embodiment of the method
Part explanation.
Professional should further appreciate that, described in conjunction with the examples disclosed in the embodiments of the present disclosure
Unit and algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, hard in order to clearly demonstrate
The interchangeability of part and software generally describes each exemplary composition and step according to function in the above description.
These functions are implemented in hardware or software actually, the specific application and design constraint depending on technical solution.
Professional technician can use different methods to achieve the described function each specific application, but this realization
It is not considered that exceeding scope of the present application.
The above description is only an example of the present application, is not intended to limit this application.For those skilled in the art
For, various changes and changes are possible in this application.All any modifications made within the spirit and principles of the present application are equal
Replacement, improvement etc., should be included within the scope of the claims of this application.
Claims (13)
1. a kind of lamp light control method characterized by comprising
At least one receiver is used with controller and is wirelessly communicated；And at least one described receiver is received from described
The parameter setting order that controller is sent；The parameter setting order is for being arranged the lighting fixture connecting with each receiver
Lighting programmers；Wherein, the controller with calculate equipment be connected, and it is described calculate equipment for identification background image illumination join
Number, and the parameter setting order is determined according to the illumination parameter of the background image；
The parameter setting order received is converted to the life for meeting the predetermined format of the lighting fixture by each receiver
It enables, and the order of the predetermined format for meeting the lighting fixture is sent to corresponding lighting fixture, to adjust the lamp
The lighting programmers of electro-optical device；Wherein, each receiver and corresponding lighting fixture wired connection.
2. the method according to claim 1, wherein the parameter setting received is ordered in each receiver
It enables and is converted to the order of the predetermined format for meeting the lighting fixture, and by the predetermined format for meeting the lighting fixture
Order is sent to corresponding lighting fixture, after the lighting programmers to adjust the lighting fixture, which comprises
The receiver, which is received, draws glitch from draw the transmitting of glitch transmitter, wherein described to draw glitch transmitter use
Draw glitch in transmitting, and is connected on filming apparatus by hot shoe；The glitch that draws is for detecting filming apparatus
In the case where shooting instruction, the lighting fixture connecting with each receiver is triggered, so that the lighting fixture is according to
The corresponding lighting programmers of parameter setting order carry out luminous.
3. the method according to claim 1, wherein at least one described receiver and controller using wireless
Mode communicate；And at least one described receiver receives before the parameter setting order that the controller is sent, it is described
Method further include:
The controller receives one group of parameter setting order that the calculating equipment is sent, wherein one group of parameter setting life
The corresponding receiver communicated with the controller of each parameter setting order in order；
The controller determines the corresponding receiver mark of each parameter setting order according to one group of parameter setting order,
And identified according to the receiver, relevant parameter setting command is sent in corresponding receiver.
4. the method according to claim 1, wherein at least one described receiver and controller using wireless
Mode communicate；And at least one described receiver receives before the parameter setting order that the controller is sent, it is described
Method further include:
The controller receives one group of parameter setting order that the calculating equipment is sent, wherein one group of parameter setting life
The corresponding receiver communicated with the controller of each parameter setting order in order；
Relevant parameter setting command is sent to phase according to one group of parameter setting order, according to predetermined order by the controller
It answers in receiver.
5. the method according to claim 1, wherein the illumination parameter of the background image is included at least with next
Or it is multinomial: the corresponding pixel value of multiple pixels in background image, the corresponding normal direction information of the multiple pixel and
Material coefficient, the direction vector set obtained according to the corresponding direction vector in multiple light sources direction of background image.
6. according to the method described in claim 5, it is characterized in that, the illumination ginseng for calculating equipment and identifying the background image
Number, and determine that the parameter setting order includes: according to the illumination parameter of the background image
For the first pixel in multiple pixels in the background image, in all directions of the direction vector set respectively
Corresponding pixel value summation, using the obtained value of summing as the pixel value of first pixel, to establish one with institute
The corresponding intensity of illumination in multiple light sources direction for stating the first pixel is the linear equation of unknown number；
Multiple pixels of the background image are sampled, to obtain one strong with the corresponding illumination of the multiple light source direction
Degree is the system of linear equations of unknown number, by asking the system of linear equations to obtain the corresponding illumination of the multiple light source direction
Intensity, wherein the intensity of illumination is for determining the parameter setting order.
7. according to the method described in claim 6, it is characterized in that, the linear equation are as follows:
Wherein, p is a pixel in the multiple pixels sampled to background image, i.e. the first pixel；C is R, G, channel B；IpFor
The pixel value of pixel p；IpIt (c) is pixel value of the pixel p on the channel c；NdFor direction vector set；Q is in direction vector set
A direction vector；LqFor the corresponding intensity of illumination of q direction vector；ApFor the material coefficient of pixel p, also known as pixel p is unrestrained anti-
Penetrate coefficient；Ap(c) value for pixel p in material image A in the channel c；npFor the normal vector of pixel p；<q,np> for q, npIt asks
Interior machine operation.
8. the method according to claim 1, wherein the method also includes:
The controller adjusts the photographing information of floor according to the illumination parameter of the background image；Wherein, the shooting
Information includes at least one following: the range information of the person of being taken and filming apparatus, the elevation information of filming apparatus, each light
The incidence angle information for the light that the location information of device, each lighting fixture issue.
9. method as claimed in any of claims 1 to 8, which is characterized in that the lighting programmers include such as down toward
It is one of few: whether position, height and each lighting fixture of each lighting fixture shine, fluorescent lifetime, light emission direction, with
And intensity of light, the light colour temperature of sending.
10. a kind of lamp light control system characterized by comprising
Controller, using wirelessly being communicated at least one receiver, for sending parameter setting life to each receiver
It enables, wherein the parameter setting order is used to be arranged the lighting programmers for the lighting fixture connecting with each receiver；
Equipment is calculated, is connected with the controller, for identification the illumination parameter of background image, and according to the background image
Illumination parameter determines the parameter setting order；
At least one described receiver, for the parameter setting order to be converted to the predetermined format for meeting the lighting fixture
Order, and the order of the predetermined format for meeting the lighting fixture is sent to corresponding lighting fixture, to adjust
State the lighting programmers of lighting fixture；Wherein, each receiver and corresponding lighting fixture wired connection.
11. system according to claim 10, which is characterized in that the system also includes:
Draw glitch transmitter, be connected on filming apparatus by hot shoe, is wirelessly led to each receiver use
Letter send for emitting and draws glitch, wherein the glitch that draws is for the shooting instruction for detecting filming apparatus the case where
Under, the lighting fixture connecting with each receiver is triggered, so that the lighting fixture is according to the parameter setting order pair
The lighting programmers answered carry out luminous.
12. a kind of lamp light control method characterized by comprising
It identifies the illumination parameter of background image, and parameter setting order is determined according to the illumination parameter of the background image, wherein
The parameter setting order is used to be arranged the lighting programmers for the lighting fixture connecting with each receiver；
Using wirelessly at least one receiver transmission parameter setting order；Wherein, each receiver will receive
To parameter setting order be converted to and meet the order of the predetermined format of the lighting fixture, and meet the light by described and fill
The order for the predetermined format set is sent to corresponding lighting fixture, to adjust the lighting programmers of the lighting fixture；Wherein, described
Each receiver and corresponding lighting fixture wired connection.
13. according to the method for claim 12, which is characterized in that the method also includes:
The receiver, which is received, draws glitch from draw the transmitting of glitch transmitter, wherein described to draw glitch transmitter use
Draw glitch in transmitting, and is connected on filming apparatus by hot shoe；The glitch that draws is for detecting filming apparatus
In the case where shooting instruction, the lighting fixture connecting with each receiver is triggered, so that the lighting fixture is according to
The corresponding lighting programmers of parameter setting order carry out luminous.
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| CN201810779890.9A CN109618472A (en) | 2018-07-16 | 2018-07-16 | Lamp light control method and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810779890.9A CN109618472A (en) | 2018-07-16 | 2018-07-16 | Lamp light control method and system |
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Application publication date: 20190412 |