CN107087119A - Adjust method, device and the electronic equipment of light-metering - Google Patents
Adjust method, device and the electronic equipment of light-metering Download PDFInfo
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- CN107087119A CN107087119A CN201710411072.9A CN201710411072A CN107087119A CN 107087119 A CN107087119 A CN 107087119A CN 201710411072 A CN201710411072 A CN 201710411072A CN 107087119 A CN107087119 A CN 107087119A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/10—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/71—Circuitry for evaluating the brightness variation
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Abstract
The embodiment of the present invention provides a kind of method, device and electronic equipment for adjusting light-metering, and methods described includes：Calculate first brightness value of the image in yuv space；Described image is converted into HSI spaces by rgb space；Determine described image in the corresponding tone weight in HSI spaces and saturation degree weight；According to the tone weight and saturation degree weight and described image in the first brightness value of yuv space, second brightness value of the described image in yuv space is calculated；According to described image in the second brightness value and the comparative result of object brightness of yuv space, the photometric parameter of next two field picture is adjusted.Methods described before shooting by pre-adjusting the photometric parameter of next two field picture so that the brightness that the brightness of the photo shot by electronic equipment is seen with naked eyes is more nearly, and improves Consumer's Experience.
Description
Technical field
The present invention relates to data processing field, set in particular to a kind of method, device and electronics for adjusting light-metering
It is standby.
Background technology
With the development of science and technology, people increasingly have deep love for being taken pictures with electronic equipments such as camera or mobile phones.But, at present
The effect of taking pictures of many electronic equipments is unsatisfactory, for example, the brightness for the photo that can be shot with electronic equipments such as camera or mobile phones
The brightness seen with naked eyes is inconsistent so that Consumer's Experience is poor.
The content of the invention
In view of this, the purpose of the embodiment of the present invention is to provide a kind of method, device and electronic equipment for adjusting light-metering,
To solve the above problems.
To achieve these goals, the technical scheme that the embodiment of the present invention is used is as follows：
In a first aspect, the embodiments of the invention provide a kind of method for adjusting light-metering, this method calculates image in YUV first
First brightness value in space, and described image is converted into HSI spaces by rgb space；Determine that the image is corresponding in HSI spaces
Tone weight and saturation degree weight；According to the tone weight and saturation degree weight and described image the first of yuv space
Brightness value, calculates second brightness value of the described image in yuv space；According to described image in the second brightness value of yuv space and
The comparative result of object brightness, adjusts the photometric parameter of next two field picture.
With reference in a first aspect, the present invention divides the image into many height in the first implementation of first aspect
Image, calculates the rgb value of each subgraph；According to the rgb value of each subgraph, each described subgraph is calculated respectively and is existed
First brightness value of yuv space.
With reference to the first implementation of first aspect, in second of implementation of first aspect, according to each height
The corresponding tone value of image, determines the corresponding tone weight of each subgraph；According to the corresponding intensity value of each subgraph, really
The corresponding saturation degree weight of each fixed subgraph；According to the corresponding tone weight of each subgraph and saturation degree weight, it is determined that respectively
The corresponding weight of individual subgraph；According to each corresponding weight of subgraph and each described subgraph the of yuv space
One brightness value, calculates second brightness value of the described image in yuv space.
It is of the invention in the third implementation of first aspect with reference to second of implementation of first aspect, according to
The corresponding tone value of each subgraph, the default weight table of inquiry, determines the corresponding tone weight of each subgraph, wherein, this is pre-
If weight table is included in pre-set interval every preset length one weight of correspondence.
With reference to second of implementation of first aspect, the present invention, will be each in the 4th kind of implementation of first aspect
The corresponding intensity value of individual subgraph is used as the corresponding saturation degree weight of each subgraph.
It is of the invention in the 5th kind of implementation of first aspect with reference to second of implementation of first aspect, according to
The product of the corresponding tone weight of each subgraph and saturation degree weight, determines the corresponding weight of each subgraph.
With reference to second of implementation of first aspect, the present invention is in the 6th kind of implementation of first aspect, respectively
Corresponding the first brightness value in yuv space of the corresponding weight of each described subgraph is multiplied, and all products are asked
With acquisition first and value；The corresponding weight of each described subgraph is added, second and value is obtained；By described first and value with
Described second and value ratio, as described image yuv space the second brightness value.
With reference in a first aspect, the present invention is in the 7th kind of implementation of first aspect, if described image is in yuv space
Second brightness value and object brightness are unequal, then adjust the photometric parameter of next two field picture.
It is of the invention in the 8th kind of implementation of first aspect with reference to the 7th kind of implementation of first aspect, according to
Described image, according to Query Result, is adjusted in the second brightness value and the ratio of object brightness of yuv space, the default exposure meter of inquiry
The time for exposure of whole next two field picture and sensitivity parameter.
Second aspect, the embodiments of the invention provide a kind of device for adjusting light-metering, the device includes：First calculates mould
Block, for calculating first brightness value of the image in yuv space；Modular converter, for described image to be converted to by rgb space
HSI spaces；Second computing module, for determining described image in the corresponding tone weight in HSI spaces and saturation degree weight map picture；
According to the tone weight and saturation degree weight and described image in the first brightness value of yuv space, calculate described image and exist
Second brightness value of yuv space；Adjusting module, for according to described image yuv space the second brightness value and object brightness
Comparative result, adjust the photometric parameter of next two field picture.
With reference to second aspect, the present invention is in the first implementation of second aspect, first computing module, specific to use
In dividing the image into multiple subgraphs, the rgb value of each subgraph is calculated；According to the rgb value of each subgraph, point
First brightness value of each described subgraph in yuv space is not calculated.
With reference to the first implementation of second aspect, the present invention is in second of implementation of second aspect, and this
Two computing modules, specifically for according to the corresponding tone value of each subgraph, determining the corresponding tone weight of each subgraph；Root
According to the corresponding intensity value of each subgraph, the corresponding saturation degree weight of each subgraph is determined；According to each subgraph correspondence
Tone weight and saturation degree weight, determine the corresponding weight of each subgraph；According to the corresponding weight of each described subgraph
And each described subgraph is in the first brightness value of yuv space, second brightness value of the described image in yuv space is calculated.
With reference to second of implementation of second aspect, the present invention is in the third implementation of second aspect, and this
Two computing modules, specifically for according to the corresponding tone value of each subgraph, the default weight table of inquiry determines each subgraph pair
The tone weight answered, wherein, the default weight table is included in pre-set interval every preset length one weight of correspondence.
With reference to second of implementation of second aspect, the present invention is in the 4th kind of implementation of second aspect, and this
Two computing modules, specifically for regarding the corresponding intensity value of each subgraph as the corresponding saturation degree weight of each subgraph.
With reference to second of implementation of second aspect, the present invention is in the 5th kind of implementation of second aspect, and this
Two computing modules, specifically for the product according to the corresponding tone weight of each subgraph and saturation degree weight, determine each height
The corresponding weight of image.
With reference to second of implementation of second aspect, the present invention is in the 6th kind of implementation of second aspect, and this
Two computing modules, specifically for respectively that the corresponding weight of each described subgraph is corresponding in the first bright of yuv space
Angle value is multiplied, and all products are summed, and obtains first and value；The corresponding weight of each described subgraph is added, the is obtained
Two and value；By described first and value with described second and be worth ratio, as described image yuv space the second brightness value.
With reference to second aspect, the present invention is in the 7th kind of implementation of second aspect, the adjusting module, if specifically for
Described image is unequal in the second brightness value and object brightness of yuv space, then adjusts the photometric parameter of next two field picture.
With reference to the 7th kind of implementation of second aspect, the present invention is in the 8th kind of implementation of second aspect, the tune
Mould preparation block, specifically for, in the second brightness value and the ratio of object brightness of yuv space, inquiry is default to expose according to described image
Table, according to Query Result, adjusts time for exposure and the sensitivity parameter of next two field picture.
The third aspect, the embodiments of the invention provide a kind of electronic equipment, the electronic equipment includes memory and processing
It is stored with device, the memory and adjusts the device of light-metering, the device of the adjustment light-metering is held including one or more by the processor
Capable software function module, the device of the adjustment light-metering includes：First computing module, for calculating image the of yuv space
One brightness value；Modular converter, for described image to be converted into HSI spaces by rgb space by described image；Second calculates mould
Block, for determining described image in the corresponding tone weight in HSI spaces and saturation degree weight map picture；According to the tone weight and
Saturation degree weight and described image calculate second brightness of the described image in yuv space in the first brightness value of yuv space
Value；Adjusting module, for according to described image yuv space the second brightness value and the comparative result of object brightness, under adjustment
The photometric parameter of one two field picture.
Fourth aspect, the embodiments of the invention provide a kind of computer-readable storage medium, for saving as above-mentioned adjustment light-metering
Device used in computer software instructions, its include be used for perform above-mentioned aspect for adjustment light-metering device designed by journey
Sequence.
Compared with prior art, a kind of method, device and electronic equipment for adjusting light-metering provided in an embodiment of the present invention, leads to
Cross the first brightness value for calculating image in yuv space；Described image is converted into HSI spaces by rgb space；Determine described image
Corresponding tone weight and saturation degree weight in HSI spaces；According to the tone weight and saturation degree weight and described image
In the first brightness value of yuv space, second brightness value of the described image in yuv space is calculated；According to described image in yuv space
The second brightness value and object brightness comparative result, adjust the photometric parameter of next two field picture, this programme passes through before shooting
Pre-adjust the photometric parameter of next two field picture so that the brightness that the brightness of the photo shot by electronic equipment is seen with naked eyes
It is more nearly, improves Consumer's Experience.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be attached to what is used required in embodiment
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore is not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is the structured flowchart of electronic equipment provided in an embodiment of the present invention.
Fig. 2 is a kind of flow chart of the method for adjustment light-metering that first embodiment of the invention is provided.
Fig. 3 be first embodiment of the invention provide a kind of adjustment light-metering method in step S200 flow chart.
Fig. 4 be first embodiment of the invention provide a kind of adjustment light-metering method in step S400 flow chart.
Fig. 5 be first embodiment of the invention provide a kind of adjustment light-metering method in step S440 flow chart.
Fig. 6 is a kind of structured flowchart of the device for adjustment light-metering that second embodiment of the invention is provided.
Fig. 7 is a kind of structured flowchart for computing device that third embodiment of the invention is provided.
Fig. 8 be fourth embodiment of the invention provide a kind of computing device in store program codes memory cell knot
Structure block diagram.
Embodiment
Below in conjunction with accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Generally exist
The component of the embodiment of the present invention described and illustrated in accompanying drawing can be arranged and designed with a variety of configurations herein.Cause
This, the detailed description of the embodiments of the invention to providing in the accompanying drawings is not intended to limit claimed invention below
Scope, but it is merely representative of the selected embodiment of the present invention.Based on embodiments of the invention, those skilled in the art are not doing
The every other embodiment obtained on the premise of going out creative work, belongs to the scope of protection of the invention.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then it further need not be defined and explained in subsequent accompanying drawing.Meanwhile, the present invention's
In description, term " first ", " second " etc. are only used for distinguishing description, and it is not intended that indicating or implying relative importance.
Fig. 1 shows the structured flowchart of a kind of electronic equipment 100 provided in an embodiment of the present invention.As shown in figure 1, the electronics
Equipment 100 includes：Radio frequency (Radio Frequency, RF) circuit 110, memory 120, input block 130, display unit
140th, sensor 150, voicefrequency circuit 160, Wireless Fidelity (wireless fidelity, WiFi) module 170, processor 180,
And the grade part of power supply 190.It will be understood by those skilled in the art that the structure of electronic equipment 100 shown in Fig. 1 is not constituted pair
The restriction of electronic equipment 100, can include than illustrating more or less parts, either combine some parts or different
Part is arranged.
Each component parts of electronic equipment 100 is specifically introduced with reference to Fig. 1：
RF circuits 110 can be used for receive and send messages or communication process in, the reception and transmission of signal, especially, by base station
After downlink information is received, handled to processor 180；In addition, being sent to base station by up data are designed.Generally, RF circuits 110
Including but not limited to antenna, at least one amplifier, transceiver, coupler, low-noise amplifier (Low Noise
Amplifier, LNA), duplexer etc..In addition, RF circuits 110 can also be communicated by radio communication with network and other equipment.
Above-mentioned radio communication can use any communication standard or agreement, including but not limited to global system for mobile communications (Global
System of Mobile communication, GSM), general packet radio service (General Packet Radio
Service, GPRS), CDMA (Code Division Multiple Access, CDMA), WCDMA
(Wideband Code Division Multiple Access, WCDMA), Long Term Evolution (Long Term Evolution,
LTE), Email, Short Message Service (Short Messaging Service, SMS) etc..
The method for the adjustment light-metering that memory 120 can be used in storage software program and module, such as embodiment of the present invention
And the corresponding programmed instruction/module of device, processor 180 is stored in the software program and mould of memory 120 by operation
Block, so that various function application and the data processing of electronic equipment 100 are performed, such as adjustment light-metering provided in an embodiment of the present invention
Method.Memory 120 can mainly include storing program area and storage data field, wherein, storing program area can store operation system
Application program (such as sound-playing function, image player function etc.) needed for system, at least one function etc.；Storage data field can
Storage uses created data (such as voice data, phone directory etc.) etc. according to electronic equipment 100.In addition, memory 120
High-speed random access memory can be included, can also include nonvolatile memory, for example, at least one disk memory,
Flush memory device or other volatile solid-state parts.
Input block 130 can be used for the numeral or character information for receiving input, and produce the user with electronic equipment 100
Set and the relevant key signals of function control are inputted.Specifically, input block 130 may include contact panel 131 and other
Input equipment 132.Contact panel 131, also referred to as touch-screen, collect touch operation of the user on or near it and (such as use
Family uses the behaviour of any suitable object or annex on contact panel 131 or near contact panel 131 such as finger, stylus
Make), and corresponding attachment means are driven according to formula set in advance.Optionally, contact panel 131 may include that touch detection is filled
Put and two parts of touch controller.Wherein, touch detecting apparatus detects the touch orientation of user, and detects that touch operation is brought
Signal, transmit a signal to touch controller；Touch controller receives touch information from touch detecting apparatus, and it is turned
Change contact coordinate into, then give processor 180, and the order sent of reception processing device 180 and can be performed.Furthermore, it is possible to
Contact panel 131 is realized using polytypes such as resistance-type, condenser type, infrared ray and surface acoustic waves.Except contact panel
131, input block 130 can also include fingerprint identification module 132 and other input equipments.Specifically, other input equipments can
To include but is not limited to physical keyboard, function key (such as volume control button, switch key etc.), trace ball, mouse, action bars
One or more in.
Display unit 140 can be used for the information and electronic equipment for showing the information inputted by user or being supplied to user
100 various menus.Display unit 140 may include display panel 141, optionally, can use liquid crystal display (Liquid
Crystal Display, LCD), the form such as Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED)
To configure display panel 141.Further, contact panel 131 can cover display panel 141, when contact panel 131 is detected
After touch operation on or near it, processor 180 is sent to determine the type of touch event, with the basis of preprocessor 180
The type of touch event is processed.Although in Fig. 1, contact panel 131 and display panel 141 are as two independent parts
To realize input and the input function of electronic equipment 100, but in some embodiments it is possible to by contact panel 131 with showing
The input that is integrated and realizing electronic equipment 100 of panel 141 and output function.
Electronic equipment 100 may also include at least one sensor 150, such as optical sensor, motion sensor and other
Sensor.Specifically, optical sensor may include ambient light sensor and proximity transducer, wherein, ambient light sensor can basis
The light and shade of ambient light adjusts the brightness of display panel 141, proximity transducer can when electronic equipment 100 is moved in one's ear,
Close display panel 141 and/or backlight.As one kind of motion sensor, accelerometer sensor can detect (one in all directions
As be three axles) acceleration size, size and the direction of gravity are can detect that when static, available for identification the appearance of electronic equipment 100
The application (such as horizontal/vertical screen switching, dependent game, magnetometer pose calibrating) of state, Vibration identification correlation function (such as pedometer,
Tap) etc.；Gyroscope, barometer, hygrometer, thermometer, infrared ray sensor for can also configure as electronic equipment 100 etc. its
His sensor, will not be repeated here.
Voicefrequency circuit 160, loudspeaker 161, microphone 162 can provide the COBBAIF between user and electronic equipment 100.
Electric signal after the voice data received conversion can be transferred to loudspeaker 161, is changed by loudspeaker 161 by voicefrequency circuit 160
Exported for voice signal；On the other hand, the voice signal of collection is converted to electric signal by microphone 162, is connect by voicefrequency circuit 160
Be converted to voice data after receipts, then after voice data output processor 180 is handled, it is such as another to be sent to through RF circuits 110
One electronic equipment 100, or voice data is exported to memory 120 so as to further processing.
WiFi belongs to short range wireless transmission technology, and electronic equipment 100 can help user to receive and dispatch by WiFi module 170
Email, browse webpage and access streaming video etc., it has provided the user wireless broadband internet and accessed.Although Fig. 1
WiFi module 170 is shown, but it is understood that, it is simultaneously not belonging to must be configured into for electronic equipment 100, completely can root
Omitted according to needs in the essential scope for do not change invention.
Processor 180 is the control centre of electronic equipment 100, utilizes various interfaces and the whole electronic equipment of connection
100 various pieces, software program and/or module in memory 120 are stored in by operation or execution, and call storage
Data in memory 120, perform the various functions and processing data of electronic equipment 100, so as to be carried out to electronic equipment 100
Integral monitoring.Optionally, processor 180 may include one or more processing units；It is preferred that, processor 180 integrated can be applied
Processor and modem processor, wherein, application processor mainly handles operating system, user interface and application program etc.,
Modem processor mainly handles radio communication.It is understood that above-mentioned modem processor can not also be integrated into
In processor 180.
Electronic equipment 100 also includes the power supply 190 (such as battery) powered to all parts, it is preferred that power supply can lead to
Cross power-supply management system and processor 180 be logically contiguous, thus by power-supply management system realize management charging, electric discharge and
The functions such as power managed.
It is appreciated that the structure shown in Fig. 1 be only signal, electronic equipment 100 may also include it is more more than shown in Fig. 1 or
Less component, or with the configuration different from shown in Fig. 1.Each component shown in Fig. 1 can using hardware, software or its
Combination is realized.
The method of adjustment light-metering provided in an embodiment of the present invention can be run in the electronic equipment 100 shown in Fig. 1.The party
Method is by calculating first brightness value of the image in yuv space；Described image is converted into HSI spaces by rgb space；It is determined that described
Image is in the corresponding tone weight in HSI spaces and saturation degree weight；According to the tone weight and saturation degree weight and described
Image calculates second brightness value of the described image in yuv space in the first brightness value of yuv space；According to described image in YUV
Second brightness value and the comparative result of object brightness in space, adjust the photometric parameter of next two field picture, this programme is by clapping
The photometric parameter of next two field picture is pre-adjusted before taking the photograph so that the brightness of the photo shot by electronic equipment is seen with naked eyes
Brightness is more nearly, and improves Consumer's Experience.The method to the adjustment light-metering is described in detail below.
Fig. 2 shows a kind of flow chart of the method for adjustment light-metering that first embodiment of the invention is provided, referring to Fig. 2,
The present embodiment describes the handling process of electronic equipment, and methods described includes：
Step S200, calculates first brightness value of the image in yuv space.
Wherein, the image can be the image obtained from sensor, for example, it may be the bayer obtained from sensor
The image of raw coded formats.
Calculate image has a variety of in the embodiment of the first brightness value of yuv space, for example, can be according to each in the figure
The rgb value of pixel, directly according to conversion formula calculate and tries to achieve first brightness value of each pixel in yuv space.
Conversion formula is as follows：
Yi=0.2988R+0.5869G+0.1137B
Wherein, R is R value of the pixel in rgb space, and G is G value of the pixel in rgb space, and B is that the pixel exists
The B values of rgb space, Yi is first brightness value of the pixel in yuv space.
In order to simplify calculating, as a kind of embodiment, referring to Fig. 3, step S200 can include：
Step S210, multiple subgraphs are divided into by described image, calculate the rgb value of each subgraph.
The number for dividing the image into subgraph can be configured according to demand, for example, can be by the figure
As being divided into 64*64 subgraph.
As a kind of embodiment, the R values of each subgraph are the R values for all pixels point that the subgraph includes
With；The sum of the G values for all pixels point that the G values of each subgraph include for the subgraph；The B values of each subgraph are should
The sum of the B values for all pixels point that subgraph includes.
Step S220, according to the rgb value of each subgraph, calculates each described subgraph in yuv space respectively
First brightness value.
The rgb value of each subgraph is obtained by step S210, calculating can be carried out according to conversion formula and try to achieve each subgraph
As the first brightness value in yuv space.
Conversion formula is as follows：
Yi=0.2988R+0.5869G+0.1137B
Wherein, R is R value of the subgraph in rgb space, and G is G value of the subgraph in rgb space, and B is that the subgraph exists
The B values of rgb space, Yi is first brightness value of the subgraph in yuv space.
Step S300, HSI spaces are converted to by described image by rgb space.
When the rgb value of each pixel of image is determined, it can be changed according to conventional RGB-HSI formula, under
Face is listed one of which RGB-HSI formula and illustrated, however, it will be understood that any changed image by rgb space
The scope of protection of the embodiment of the present invention is belonged to for the embodiment in HSI spaces.
For example, described image can be converted into HSI spaces by rgb space by following RGB-HSI formula：
H=H+2 π, if H<0
Max=max (R, G, B)
Min=min (R, G, B)
Wherein, R is R value of the pixel in rgb space, and G is G value of the pixel in rgb space, and B is that the pixel exists
The B values of rgb space, H is tone value of the pixel in HSI spaces, and S is intensity value of the pixel in HSI spaces, and I is
Brightness value of the pixel in HSI spaces.It is noted that the RGB in above-mentioned formula is required to be normalized to before calculating
[0,1] it is interval.
Further, in order to simplify calculating, each subgraph of described image by rgb space can also be converted to HSI
Space, it is to be understood that the GRB values of each subgraph have been got by step S210, now, it is only necessary to according to above-mentioned formula
The tone value H of each subgraph, intensity value S can be calculated.
Step S400, determines described image in the corresponding tone weight in HSI spaces and saturation degree weight；According to the tone
Weight and saturation degree weight and described image calculate described image the second of yuv space in the first brightness value of yuv space
Brightness value.
As a kind of embodiment, referring to Fig. 4, step S400 can include：
Step S410, according to the corresponding tone value of each described subgraph, determines the corresponding tone of each described subgraph
Weight.
As a kind of embodiment, according to the corresponding tone value of each described subgraph, the default weight table of inquiry, it is determined that respectively
The corresponding tone weight of the individual subgraph.
Wherein, the default weight table is included in pre-set interval every preset length one weight of correspondence.It is used as one kind
Embodiment, the default weight table can be determined according to luminous efficiency curve.Luminous efficiency curve is human eye to different wave length
One of spectrum response, and it is exactly tone value that wavelength, which is reacted to eye,.Pre-set interval is set to [0 °, 360 °], presets length
Spend for 15 °, i.e., every 15 ° of correspondences, one weight.It is, of course, understood that preset length can also set smaller.
A specific example is named to illustrate.
Above-mentioned is a default weight table, every 15 ° of correspondences, one weight, when the corresponding tone value of each described subgraph
It is determined that after, the default weight table of inquiry lid just can determine that the corresponding tone weight of each subgraph, if for example, subgraph 1 is corresponding
Tone value is 45 degree, then the corresponding weight of subgraph 1 is 0.66.
Step S420, according to the corresponding intensity value of each described subgraph, determines that each described subgraph is corresponding full
With degree weight.
As a kind of embodiment, the corresponding intensity value of each described subgraph is regard as subgraph correspondence each described
Saturation degree weight.
Step S430, according to the corresponding tone weight of each described subgraph and saturation degree weight, determines each son
The corresponding weight of image.
As a kind of embodiment, according to the corresponding tone weight of each described subgraph and the product of saturation degree weight,
Determine the corresponding weight of each described subgraph.
As a kind of specific embodiment, it can be calculated according to following formula：
HSi=(1+Hi* Si)
Wherein, HSiFor the corresponding weight of i-th of subgraph, HiFor the corresponding tone weight of i-th of subgraph, SiFor i-th
The corresponding saturation degree weight of individual subgraph.
Step S440, according to each corresponding weight of subgraph and each described subgraph the first of yuv space
Brightness value, calculates second brightness value of the described image in yuv space.
As a kind of embodiment, referring to Fig. 5, step S440 can include：
Step S441, respectively by corresponding corresponding the first brightness in yuv space of weight of each described subgraph
Value is multiplied, and all products are summed, and obtains first and value.
As a kind of specific embodiment, it can be calculated according to following formula：
SUM1=∑s Yi* HSi
Wherein, SUM1 is first and value, YiIt is i-th of subgraph in the first brightness value of yuv space, HSiFor i-th of son
The corresponding weight of image.
Step S442, the corresponding weight of each described subgraph is added, second and value is obtained.
As a kind of specific embodiment, it can be calculated according to following formula：
SUM2=∑s HSi
Wherein, SUM2 is second and value, HSiFor the corresponding weight of i-th of subgraph.
Step S443, by described first and value and described second and the ratio that is worth, as described image the of yuv space
Two brightness values.
As a kind of specific embodiment, it can be calculated according to following formula：
Y '=SUM1/SUM2=(∑ Yi* HSi)/∑HSi
Wherein, Y ' is second brightness value of the image in yuv space, and SUM1 is first and value, and SUM2 is second and value, YiFor
I-th of subgraph is in the first brightness value of yuv space, HSiFor the corresponding weight of i-th of subgraph.
Step S500, according to described image yuv space the second brightness value and the comparative result of object brightness, under adjustment
The photometric parameter of one two field picture.
As a kind of embodiment, if described image is unequal with object brightness in the second brightness value of yuv space, adjust
The photometric parameter of whole next two field picture.If described image is equal with object brightness in the second brightness value of yuv space, do not adjust
The photometric parameter of next two field picture.
Further, as a kind of specific embodiment, according to described image yuv space the second brightness value and mesh
The ratio of brightness is marked, the default exposure meter of inquiry, according to Query Result, adjusts time for exposure and the sensitivity of next two field picture
Parameter.
Wherein, presetting exposure meter includes numerical value and photometric parameter mapping table.The numerical value correspondence image in yuv space
The ratio of two brightness values and object brightness, photometric parameter can include but is not limited to time for exposure and sensitivity parameter.When described
Image is after the second brightness value of yuv space and the ratio of object brightness are determined, you can by the default exposure meter of inquiry, get
Time for exposure corresponding with the ratio and sensitivity parameter.
The method of adjustment light-metering provided in an embodiment of the present invention, by calculating first brightness value of the image in yuv space；Will
Described image is converted to HSI spaces by rgb space；Determine that described image is weighed in the corresponding tone weight in HSI spaces and saturation degree
Weight；According to the tone weight and saturation degree weight and described image in the first brightness value of yuv space, described image is calculated
In the second brightness value of yuv space；According to described image yuv space the second brightness value and the comparative result of object brightness,
Adjust the photometric parameter of next two field picture, this programme before shooting by pre-adjusting the photometric parameter of next two field picture so that
The brightness that the brightness of the photo shot by electronic equipment is seen with naked eyes is more nearly, and improves Consumer's Experience.
Referring to Fig. 6, being the high-level schematic functional block diagram of the device 600 for the adjustment light-metering that second embodiment of the invention is provided.
The device 600 of the adjustment light-metering runs on electronic equipment 100.The device 600 of the adjustment light-metering includes the first computing module
610th, modular converter 620, the second computing module 630, adjusting module 640.
First computing module 610, for calculating first brightness value of the image in yuv space.
It is used as a kind of embodiment, first computing module 610, specifically for described image is divided into multiple subgraphs
Picture, calculates the rgb value of each subgraph；According to the rgb value of each subgraph, each subgraph is calculated respectively
In the first brightness value of yuv space.
Modular converter 620, for described image to be converted into HSI spaces by rgb space.
Second computing module 630, for determining described image in the corresponding tone weight in HSI spaces and saturation degree weight map
Picture；According to the tone weight and saturation degree weight and described image in the first brightness value of yuv space, described image is calculated
In the second brightness value of yuv space.
It is used as a kind of embodiment, second computing module 630, specifically for corresponding according to each described subgraph
Tone value, determines the corresponding tone weight of each described subgraph；According to the corresponding intensity value of each described subgraph, it is determined that
The corresponding saturation degree weight of each described subgraph；According to the corresponding tone weight of each described subgraph and saturation degree weight,
Determine the corresponding weight of each described subgraph；Existed according to each corresponding weight of subgraph and each described subgraph
First brightness value of yuv space, calculates second brightness value of the described image in yuv space.
It is used as a kind of embodiment, second computing module 630, specifically for corresponding according to each described subgraph
Tone value, the default weight table of inquiry determines the corresponding tone weight of each described subgraph, wherein, the default weight table bag
Include in pre-set interval every preset length one weight of correspondence.
It is used as a kind of embodiment, second computing module 630, specifically for each described subgraph is corresponding full
The corresponding saturation degree weight of subgraph each described is used as with angle value.
It is used as a kind of embodiment, second computing module 630, specifically for corresponding according to each described subgraph
The product of tone weight and saturation degree weight, determines the corresponding weight of each described subgraph.
It is used as a kind of embodiment, second computing module 630, specifically for respectively by each subgraph correspondence
Corresponding the first brightness value in yuv space of weight be multiplied, and all products are summed, obtain first and value；Will be each
The corresponding weight of the individual subgraph is added, and obtains second and value；By described first and value and described second and the ratio of value, make
For described image yuv space the second brightness value.
Adjusting module 640, for according to described image in the second brightness value of yuv space and the comparison knot of object brightness
Really, the photometric parameter of next two field picture is adjusted.
As a kind of embodiment, the adjusting module 640, if specifically for described image in the second bright of yuv space
Angle value is unequal with object brightness, then adjusts the photometric parameter of next two field picture.
As a kind of embodiment, the adjusting module 640, specifically for according to described image the second of yuv space
The ratio of brightness value and object brightness, the default exposure meter of inquiry, according to Query Result, when adjusting the exposure of next two field picture
Between and sensitivity parameter.
Each module can be that now, above-mentioned each module can be stored in electronic equipment 100 by software code realization above
In memory 120.Each module can equally be realized by hardware such as IC chip above.
Third embodiment of the invention provides a kind of electronic equipment, and the electronic equipment includes memory and processor,
It is stored with the memory and adjusts the device of light-metering, the device of the adjustment light-metering is including one or more by the processor
The software function module of execution, the device of the adjustment light-metering includes：
First computing module, for calculating first brightness value of the image in yuv space；
Modular converter, for described image to be converted into HSI spaces by rgb space by described image；
Second computing module, for determining described image in the corresponding tone weight in HSI spaces and saturation degree weight map picture；
According to the tone weight and saturation degree weight and described image in the first brightness value of yuv space, calculate described image and exist
Second brightness value of yuv space；
Adjusting module, for, in the second brightness value and the comparative result of object brightness of yuv space, being adjusted according to described image
The photometric parameter of whole next two field picture.
It should be noted that each embodiment in this specification is described by the way of progressive, each embodiment weight
Point explanation be all between difference with other embodiment, each embodiment identical similar part mutually referring to.
The technology effect of the device and electronic equipment for the adjustment light-metering that the embodiment of the present invention is provided, its realization principle and generation
Fruit is identical with preceding method embodiment, to briefly describe, and device embodiment part does not refer to part, refers to preceding method implementation
Corresponding contents in example.
It is apparent to those skilled in the art that, for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, may be referred to the corresponding process in preceding method embodiment, will not be repeated here.
In several embodiments provided herein, it should be understood that disclosed system, apparatus and method can be with
Realize by another way.For example, device embodiment described above is only schematical, for example, the unit
Divide, only a kind of division of logic function there can be other dividing mode when actually realizing, such as multiple units or component
Another system can be combined or be desirably integrated into, or some features can be ignored, or do not perform.It is another, it is shown or
The coupling each other discussed or direct-coupling or communication connection can be the indirect couplings of device or unit by some interfaces
Close or communicate to connect, can be electrical, machinery or other forms.
The unit illustrated as separating component can be or may not be it is physically separate, it is aobvious as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the invention can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated list
Member can both be realized in the form of hardware, it would however also be possible to employ the form of SFU software functional unit is realized.
Can be with one of ordinary skill in the art will appreciate that realizing that all or part of step in above-described embodiment method is
The hardware of correlation is instructed to complete by program, described program can be stored in a kind of computer-readable recording medium, on
It can be read-only storage, disk or CD etc. to state the storage medium mentioned.
Fig. 7, which is shown, can realize the computing device of the method for processing information according to the present invention.The computing device is traditionally
Including processor 710 and with the computer program product or computer-readable medium of the form of storage device 720.Storage device
720 can be the electricity of such as flash memory, EEPROM (Electrically Erasable Read Only Memory), EPROM, hard disk or ROM etc
Quantum memory.Storage device 720 has depositing for program code 731 of the storage for performing any method and step in the above method
Store up space 730.For example, the memory space 730 of store program codes can be each in above method including being respectively used to realize
Plant each program code 731 of step.These program codes can be read from one or more computer program product or
Person is written in this one or more computer program product.These computer program products include such as hard disk, compact-disc
(CD), the program code carrier of storage card or floppy disk etc.Such computer program product is usually for example shown in Fig. 8
Portable or static memory cell.The memory cell can have and the similar cloth of storage device 720 in Fig. 7 computing device
Memory paragraph, memory space for putting etc..Program code for example can be compressed in a suitable form.Generally, memory cell includes using
In the ＇ of computer-readable code 731 for performing steps of a method in accordance with the invention, you can be read by such as 710 etc processor
The code taken, when these codes are run by computing device, causes each in the computing device method described above
Individual step.
The embodiment of the present invention is further disclosed：
A1, a kind of method of adjustment light-metering, this method include：
Calculate first brightness value of the image in yuv space；
Described image is converted into HSI spaces by rgb space；
Determine described image in the corresponding tone weight in HSI spaces and saturation degree weight；
According to the tone weight and saturation degree weight and described image in the first brightness value of yuv space, institute is calculated
State second brightness value of the image in yuv space；
According to described image in the second brightness value and the comparative result of object brightness of yuv space, next two field picture is adjusted
Photometric parameter.
A2, the method according to A1, the calculating image yuv space the first brightness value, including：
Described image is divided into multiple subgraphs, the rgb value of each subgraph is calculated；
According to the rgb value of each subgraph, first brightness of each described subgraph in yuv space is calculated respectively
Value.
A3, the method according to A2, the determination described image are weighed in the corresponding tone weight in HSI spaces and saturation degree
Weight, according to the tone weight and saturation degree weight and described image in the first brightness value of yuv space, calculates described image
In the second brightness value of yuv space, including：
According to the corresponding tone value of each described subgraph, the corresponding tone weight of each described subgraph is determined；
According to the corresponding intensity value of each described subgraph, the corresponding saturation degree weight of each described subgraph is determined；
According to the corresponding tone weight of each described subgraph and saturation degree weight, determine that each described subgraph is corresponding
Weight；
According to each corresponding weight of subgraph and each described subgraph in the first brightness value of yuv space, meter
Calculate second brightness value of the described image in yuv space.
A4, the method according to A3, it is described according to the corresponding tone value of each described subgraph, determine each son
The corresponding tone weight of image, including：
According to the corresponding tone value of each described subgraph, the default weight table of inquiry determines each subgraph correspondence
Tone weight, wherein, the default weight table is included in pre-set interval every preset length one weight of correspondence.
A5, the method according to A3, it is described according to the corresponding intensity value of each described subgraph, determine described in each
The corresponding saturation degree weight of subgraph, including：
It regard the corresponding intensity value of each described subgraph as the corresponding saturation degree weight of subgraph each described.
A6, the method according to A3, according to the corresponding tone weight of each described subgraph and saturation degree weight, it is determined that
The corresponding weight of each described subgraph, including：
According to the corresponding tone weight of each described subgraph and the product of saturation degree weight, each subgraph is determined
Corresponding weight.
A7, the method according to A3, it is described according to each corresponding weight of subgraph and each described subgraph
In the first brightness value of yuv space, second brightness value of the described image in yuv space is calculated, including：
Corresponding the first brightness value in yuv space of the corresponding weight of each described subgraph is multiplied respectively, and
All products are summed, first and value is obtained；
The corresponding weight of each described subgraph is added, second and value is obtained；
By described first and value with described second and be worth ratio, as described image yuv space the second brightness value.
A8, the method according to A1, it is described according to described image yuv space the second brightness value and object brightness
Comparative result, adjusts the photometric parameter of next two field picture, including：
If described image is unequal with object brightness in the second brightness value of yuv space, the survey of next two field picture is adjusted
Optical parameter.
A9, the method according to A8, it is described according to described image yuv space the second brightness value and object brightness
Comparative result, adjusts the photometric parameter of next two field picture, including：
According to described image in the second brightness value and the ratio of object brightness of yuv space, default exposure meter is inquired about, according to
Query Result, adjusts time for exposure and the sensitivity parameter of next two field picture.
B1, a kind of device of adjustment light-metering, this, which states device, includes：
First computing module, for calculating first brightness value of the image in yuv space；
Modular converter, for described image to be converted into HSI spaces by rgb space；
Second computing module, for determining described image in the corresponding tone weight in HSI spaces and saturation degree weight map picture；
According to the tone weight and saturation degree weight and described image in the first brightness value of yuv space, calculate described image and exist
Second brightness value of yuv space；
Adjusting module, for, in the second brightness value and the comparative result of object brightness of yuv space, being adjusted according to described image
The photometric parameter of whole next two field picture.
B2, the device according to B1, first computing module, specifically for described image is divided into multiple subgraphs
Picture, calculates the rgb value of each subgraph；According to the rgb value of each subgraph, each subgraph is calculated respectively
In the first brightness value of yuv space.
B3, the device according to B2, second computing module, specifically for corresponding according to each described subgraph
Tone value, determines the corresponding tone weight of each described subgraph；According to the corresponding intensity value of each described subgraph, it is determined that
The corresponding saturation degree weight of each described subgraph；According to the corresponding tone weight of each described subgraph and saturation degree weight,
Determine the corresponding weight of each described subgraph；Existed according to each corresponding weight of subgraph and each described subgraph
First brightness value of yuv space, calculates second brightness value of the described image in yuv space.
B4, the device according to B3, second computing module, specifically for corresponding according to each described subgraph
Tone value, the default weight table of inquiry determines the corresponding tone weight of each described subgraph, wherein, the default weight table bag
Include in pre-set interval every preset length one weight of correspondence.
B5, the device according to B3, second computing module, specifically for each described subgraph is corresponding full
The corresponding saturation degree weight of subgraph each described is used as with angle value.
B6, the device according to B3, second computing module, specifically for corresponding according to each described subgraph
The product of tone weight and saturation degree weight, determines the corresponding weight of each described subgraph.
B7, the device according to B3, second computing module, specifically for respectively by each subgraph correspondence
Corresponding the first brightness value in yuv space of weight be multiplied, and all products are summed, obtain first and value；Will be each
The corresponding weight of the individual subgraph is added, and obtains second and value；By described first and value and described second and the ratio of value, make
For described image yuv space the second brightness value.
B8, the device according to B1, the adjusting module, if specifically for described image in the second bright of yuv space
Angle value is unequal with object brightness, then adjusts the photometric parameter of next two field picture.
B9, the device according to B8, the adjusting module, specifically for according to described image the second of yuv space
The ratio of brightness value and object brightness, the default exposure meter of inquiry, according to Query Result, when adjusting the exposure of next two field picture
Between and sensitivity parameter.
C1, a kind of electronic equipment, the electronic equipment include the tune that is stored with memory and processor, the memory
The device of whole light-metering, the device of the adjustment light-metering includes one or more software function modules by the computing device,
The device of the adjustment light-metering includes：
First computing module, for calculating first brightness value of the image in yuv space；
Modular converter, for described image to be converted into HSI spaces by rgb space by described image；
Second computing module, for determining described image in the corresponding tone weight in HSI spaces and saturation degree weight map picture；
According to the tone weight and saturation degree weight and described image in the first brightness value of yuv space, calculate described image and exist
Second brightness value of yuv space；
Adjusting module, for, in the second brightness value and the comparative result of object brightness of yuv space, being adjusted according to described image
The photometric parameter of whole next two field picture.
Claims (10)
1. a kind of method for adjusting light-metering, it is characterised in that methods described includes：
Calculate first brightness value of the image in yuv space；
Described image is converted into HSI spaces by rgb space；
Determine described image in the corresponding tone weight in HSI spaces and saturation degree weight；
According to the tone weight and saturation degree weight and described image in the first brightness value of yuv space, the figure is calculated
As the second brightness value in yuv space；
According to described image in the second brightness value and the comparative result of object brightness of yuv space, the survey of next two field picture is adjusted
Optical parameter.
2. according to the method described in claim 1, it is characterised in that first brightness value for calculating image in yuv space, bag
Include：
Described image is divided into multiple subgraphs, the rgb value of each subgraph is calculated；
According to the rgb value of each subgraph, first brightness value of each described subgraph in yuv space is calculated respectively.
3. method according to claim 2, it is characterised in that the determination described image is in the corresponding tone in HSI spaces
Weight and saturation degree weight, according to the tone weight and saturation degree weight and described image yuv space the first brightness
Value, calculates second brightness value of the described image in yuv space, including：
According to the corresponding tone value of each described subgraph, the corresponding tone weight of each described subgraph is determined；
According to the corresponding intensity value of each described subgraph, the corresponding saturation degree weight of each described subgraph is determined；
According to the corresponding tone weight of each described subgraph and saturation degree weight, the corresponding power of each described subgraph is determined
Weight；
According to each corresponding weight of subgraph and each described subgraph in the first brightness value of yuv space, institute is calculated
State second brightness value of the image in yuv space.
4. method according to claim 3, it is characterised in that described according to the corresponding tone value of each described subgraph,
The corresponding tone weight of each described subgraph is determined, including：
According to the corresponding tone value of each described subgraph, the default weight table of inquiry determines the corresponding color of each described subgraph
Weight is adjusted, wherein, the default weight table is included in pre-set interval every preset length one weight of correspondence.
5. method according to claim 3, it is characterised in that described according to the corresponding saturation degree of each described subgraph
Value, determines the corresponding saturation degree weight of each described subgraph, including：
It regard the corresponding intensity value of each described subgraph as the corresponding saturation degree weight of subgraph each described.
6. method according to claim 3, it is characterised in that according to the corresponding tone weight of each described subgraph and full
With degree weight, the corresponding weight of each described subgraph is determined, including：
According to the corresponding tone weight of each described subgraph and the product of saturation degree weight, each subgraph correspondence is determined
Weight.
7. method according to claim 3, it is characterised in that described according to the corresponding weight of each described subgraph and each
The individual subgraph calculates second brightness value of the described image in yuv space in the first brightness value of yuv space, including：
Corresponding the first brightness value in yuv space of the corresponding weight of each described subgraph is multiplied respectively, and by institute
There is product summation, obtain first and value；
The corresponding weight of each described subgraph is added, second and value is obtained；
By described first and value with described second and be worth ratio, as described image yuv space the second brightness value.
8. according to the method described in claim 1, it is characterised in that it is described according to described image yuv space the second brightness
The comparative result of value and object brightness, adjusts the photometric parameter of next two field picture, including：
If described image is unequal with object brightness in the second brightness value of yuv space, the light-metering ginseng of next two field picture is adjusted
Number.
9. a kind of device for adjusting light-metering, it is characterised in that described device includes：
First computing module, for calculating first brightness value of the image in yuv space；
Modular converter, for described image to be converted into HSI spaces by rgb space；
Second computing module, for determining described image in the corresponding tone weight in HSI spaces and saturation degree weight map picture；According to
The tone weight and saturation degree weight and described image calculate described image empty in YUV in the first brightness value of yuv space
Between the second brightness value；
Adjusting module, for according to described image yuv space the second brightness value and the comparative result of object brightness, under adjustment
The photometric parameter of one two field picture.
10. a kind of electronic equipment, it is characterised in that the electronic equipment is included in memory and processor, the memory
It is stored with and adjusts the device of light-metering, the device of the adjustment light-metering includes one or more software work(by the computing device
Energy module, the device of the adjustment light-metering includes：
First computing module, for calculating first brightness value of the image in yuv space；
Modular converter, for described image to be converted into HSI spaces by rgb space by described image；
Second computing module, for determining described image in the corresponding tone weight in HSI spaces and saturation degree weight map picture；According to
The tone weight and saturation degree weight and described image calculate described image empty in YUV in the first brightness value of yuv space
Between the second brightness value；
Adjusting module, for according to described image yuv space the second brightness value and the comparative result of object brightness, under adjustment
The photometric parameter of one two field picture.
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