CN101202841A - Imaging apparatus and exposal control method for the same - Google Patents
Imaging apparatus and exposal control method for the same Download PDFInfo
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- CN101202841A CN101202841A CNA2007101996819A CN200710199681A CN101202841A CN 101202841 A CN101202841 A CN 101202841A CN A2007101996819 A CNA2007101996819 A CN A2007101996819A CN 200710199681 A CN200710199681 A CN 200710199681A CN 101202841 A CN101202841 A CN 101202841A
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Abstract
The invention provides a camera device which can expose the face and body of the imaged person at the same time. The camera device comprises a CCD101 for inputting the image data corresponding to the image person; a face detection unit which is executed by a CPU module 104c in a digital camera microprocessor 104 and used for detecting the face from the picture obtained from the image data outputted by the CCD10; a first photometric unit which is executed by the CPU module 104c and used for using the face detected by the CPU module 104c as the photometric area for photometering; a second photometric unit which is executed by the CPU module 104c and used for judging the upward and downward direction of the face and using the lower part of the face as the photometric area for photometering; an exposure control unit which is executed by the CPU module 104c and used for calculating the exposure amount according the photometering results of the first photometric unit and the photometric unit and then for controlling the exposure according to the calculated exposure amount.
Description
Technical field
The present invention relates to have the camera head such as digital camera of automatic exposure function and the exposal control method that is used for camera head.
Background technology
In digital still image camera exposure decision-making mode in the past, following several mode is arranged as everyone knows: multi-region balance Exposure Metering, this mode is divided into a plurality of photometry regions with the photometric range in the picture, and the photometry result who obtains from each photometry region determines Exposure mode; Central authorities' emphasis Exposure Metering, this mode is carried out photometry with the core that photometry focuses on picture; Middle body Exposure Metering, this mode only to the picture center account for picture tens percent scope carry out photometry; The point photometry, this mode is carried out photometry to the scope that the picture center accounts for a few percent, or the like.
Yet in above-mentioned exposure decision-making mode, multi-region balance Exposure Metering is for control that whole image is exposed, thereby, when the main subject behaviour face in the picture,, so just might can not get being fit to the exposure of people's face if there is very big light and shade poor between character facial and the background.And exposure decision-making mode is when being above-mentioned central emphasis Exposure Metering, middle body Exposure Metering and some Exposure Metering, if the people that the photometry region in the picture by chance is positioned at main subject on the face, so, though in this photometry region, can access suitable exposure, yet the people's face that is positioned at beyond this photometry region might can not get suitable exposure.
For this reason, in recent years, as in the TOHKEMY 2003-107555 of patent documentation 1 communique, disclosing the camera heads such as digital still image camera that carry out following exposure control.Promptly, be equipped with people's face detecting unit, in the view data of the shot object image of taking with optical system and imaging apparatus, detect people's face, calculate the detected character facial exposure of people's face detecting unit, then, make character facial obtain suitable exposure according to the exposure control exposure of calculating.
But, as the above-mentioned patent documentation 1 described cameras such as digital still image camera that possess people's face detecting unit, though it can be by the control exposure, the character facial that people's face detecting unit detects in the picture is carried out suitable exposure, but, when this personage's body part has been compared big light and shade difference with face, such as, face is bright state owing to shining the sun, body part then is blocked in the shade of building, might can't obtain being fit to the exposure of personage's body part so.
Also have, when personnel selection face measurement unit detects people's face, detected face area is set at photometry region, calculate the exposure of face according to the photometry result of this photometry region.
Yet, in the past, in being located at the rectangle photometry region of face, because part is positioned at the face outside near the right angle of rectangle, when this face outside is that the peripheral background parts of face is compared with face on lightness when very big difference is arranged, for the influence of the peripheral background lightness of face, face might can not get suitable exposure.Especially working as detected face only has one, and then the relative picture of this face area is more little, the just easy more influence that is subjected to face's outside lightness.
Summary of the invention
The exposal control method that the purpose of this invention is to provide a kind of camera head and be used for this camera head, this camera head and exposal control method are in the pairing picture of view data of image unit output, when detecting people's face, can carry out correct exposure by people's face detecting unit to the personage who comprises body part.The present invention also aims to provide a kind of camera head, when this camera head detects people's face by people's face detecting unit in the pairing picture of view data of image unit output, can restrain the lightness influence that the peripheral background portion of face is graded, make face be able to proper exposure.
In order to achieve the above object, the present invention proposes following scheme.
(1) a kind of camera head with automatic exposure function is characterized by and possesses:
Image unit is taken subject, and exports corresponding view data according to shot object image;
People's face detecting unit detects people's face the picture that the view data of exporting from described image unit obtains;
The first photometry unit carries out photometry with the detected character facial of described people's face detecting unit as photometry region;
The second photometry unit judges that the detected people of described people's face detecting unit descends direction on the face, carries out photometry with the lower part as photometry region with face;
The exposure control unit according to the photometry of the photometry result of the described first photometry unit and described second photometry unit calculation exposure amount as a result, is carried out exposure control according to the exposure of calculating.
According to (1) described invention, by the photometry region of the detected character facial of people's face detecting unit being carried out photometry with the first photometry unit, is that the photometry region of body part carry out photometry to the detected character facial of people's face detecting unit with the lower part with the second photometry unit, with the exposure control unit according to the photometry of the photometry result of the first photometry unit and second photometry unit calculation exposure amount as a result, according to the exposure of the calculating control that exposes, thereby obtain being suitable for personage's the face and the exposure of body part.
(2) a kind of exposal control method that has the camera head of automatic exposure function and be used for this camera head, it is characterized by, the face that the second photometry unit is carried out photometry is bold little with the people in the detected described picture of photometry region interlock people face detecting unit of lower part.
According to (2) described invention and since interlock the people in the picture be bold for a short time, thereby also can carry out suitable photometry to body part.
(3) a kind of exposal control method that has the camera head of automatic exposure function and be used for this camera head, it is characterized by, the character facial of the second photometry unit being carried out photometry is with the people's face position in the detected described picture of lower part pairing photometry region interlock people face detecting unit.
According to (3) described invention and since interlock the people's face position in the picture, thereby body part also can access suitable photometry.
(4) a kind of exposal control method that has the camera head of automatic exposure function and be used for this camera head is characterized by, and the exposure control unit is calculated exposure according to the first photometry unit photometry result and the second unit photometry result's weighted average.
According to (4) described invention, be weighted on average by photometry result the first photometry unit and the second photometry unit, calculate exposure according to this weighted average, make personage's face and its body part obtain balanced exposure.
(5) a kind of exposal control method that has the camera head of automatic exposure function and be used for this camera head is characterized by,
Have the 3rd photometry unit, the 3rd photometry unit is in the picture, and the zone except the photometry region of the photometry region of the first photometry unit and the second photometry unit is as photometry region;
The exposure control unit is calculated exposure according to the photometry result of the first photometry unit and the photometry result of the second photometry unit and the photometry result of the 3rd photometry unit.
According to (5) described invention, because exposure is to calculate according to the photometry result of the first photometry unit and the photometry result of the second photometry unit and the photometry result of the 3rd photometry unit, so personage's face, health and part in addition are that background parts can both obtain balanced exposure.
(6) a kind of exposal control method that has the camera head of automatic exposure function and be used for this camera head is characterized by, and the photometry region that the 3rd photometry unit carries out photometry is a whole image.
According to (6) described invention, can carry out the equilibrium exposure to face, body part and the background of the personage in the picture.
(7) a kind of exposal control method that has the camera head of automatic exposure function and be used for this camera head, it is characterized by, the exposure control unit is calculated exposure according to the first photometry unit photometry result and the second photometry unit photometry result and the 3rd photometry unit photometry result's weighted average.
According to (7) described invention, by the photometry result of the first photometry unit and the photometry result of the second photometry unit and the photometry result of the 3rd photometry unit are weighted on average, calculate photometric quantity according to this weighted average, thereby make personage's face, body part and background also be able to balanced exposure.
(8) a kind of exposal control method that has the camera head of automatic exposure function and be used for this camera head is characterized by, and it is little to be bold according to the detected people of people's face detecting unit, and the photometry of the corresponding change first photometry unit is weight coefficient as a result.
According to (8) described invention, by be bold according to the people little photometry to the first photometry unit as a result weight coefficient make corresponding change, make it possible to carry out the equilibrium exposure of attaching most importance to face.
(9) a kind of exposal control method that has the camera head of automatic exposure function and be used for this camera head is characterized by, and strengthens the first photometry unit photometry result's weight coefficient according to the detected people of the people's face detecting unit small scale of being bold.
According to (9) described invention, the photometry of the first photometry unit that scales up for a short time by being bold according to the people is weight coefficient as a result, and the equilibrium that makes it possible to carry out attaching most importance to face exposes.
(10) a kind of exposal control method that is used to have the automatic exposure function camera head is characterized by and may further comprise the steps:
The shooting step is taken subject, according to the corresponding view data of shot object image output;
People's face detects step, detects people's face in the picture that described view data obtains;
The first photometry step detects the detected character facial of step with people's face and carries out photometry as photometry region;
The second photometry step judges that people's face detects detected character facial above-below direction in the step, carries out photometry with the part below the face as photometry region;
The exposure controlled step is according to the photometry of the photometry result of the first photometry step and second photometry step calculation exposure amount as a result, according to the exposure of the calculating control that exposes.
According to (10) described invention, by in the first photometry step with people's face inspection side step rapid in detected character facial be that photometry region carries out photometry, in the second photometry step with people's face inspection side step rapid in part below the detected character facial be that photometry region carries out photometry, in step of exposure, according to the photometry of the photometry result of the first photometry step and second photometry step calculation exposure amount as a result, according to the exposure of the calculating control that exposes, make personage's face and its body part obtain suitable exposure.
11) a kind of camera head with automatic exposure function is characterized by and comprises:
Image unit is taken subject, and according to the corresponding view data of shot object image output;
People's face detecting unit detects people's face the picture that the view data of exporting from image unit obtains;
The photometry region setup unit is further set photometry region in the detected face area of people's face detecting unit;
The photometry unit, the photometry region according to the photometry region setup unit sets carries out photometry to the detected people of people's face detecting unit face part;
The exposure control unit is according to the photometry of photometry unit calculation exposure amount as a result, according to the exposure of the calculating control that exposes.
According to (11) described invention, in the detected human face region of people's face detecting unit, further set photometry region, by in the photometry region of this setting, photometry being carried out in the detected people of people's face detecting unit face part, can be with higher precision to the control that exposes of people's face.
(12) a kind of camera head with automatic exposure function is characterized by, and described photometry region setup unit will be set at photometry region less than the zone of this regional extent in the detected human face region of people's face detecting unit.
(13) a kind of camera head with automatic exposure function, it is characterized by, described photometry region setup unit is set and is positioned in the detected human face region of people's face detecting unit, less than this regional extent, and the zone that does not comprise this detected human face region upper portion is photometry region.
According to (12), (13) described invention, even character facial and its periphery are to exist on the lightness under the situation of big difference very between the background parts around the face, also can control exposure, make face not be subjected to the influence of background parts lightness around it and obtain suitable exposure.
(14) a kind of camera head with automatic exposure function possesses:
Image unit is taken subject, and according to the corresponding view data of shot object image output;
People's face detecting unit detects people's face the picture that the view data of exporting from image unit obtains;
The photometry unit as photometry region, carries out photometry with the detected character facial of people's face detecting unit;
The exposure control unit according to the photometry of photometry unit calculation exposure amount as a result, according to the exposure of the calculating control that exposes, is characterized by,
When the exposure control unit judges that the detected human face region of people's face detecting unit is less than predefined setting size, and detected people's face is when having only one, the detected character facial of people's face detecting unit is not set at photometry region, handles and carry out predefined conventional photometry.
According to (14) described invention, even the background parts around the face is compared with face very big difference is arranged on lightness, also can control exposure, restrain face's influence of background parts lightness on every side.
(15) a kind of camera head with automatic exposure function, it is characterized by, when the exposure control unit is judged the detected human face region of described people's face detecting unit less than predefined setting size, if people's face detecting unit detects a plurality of people's faces, control photometry unit, a plurality of detected faces respectively as photometry region, are carried out photometry and handle.
According to (15) described invention, under the little situation of detected character facial size,, can carry out correct exposure to a plurality of character facial with detected a plurality of faces respectively as photometry region if detect a plurality of people's faces.
It below is effect of the present invention.
According to the exposal control method of camera head that the present invention relates to and camera head, when detecting the subject personage, can control exposure, make personage's face and body part obtain correct exposure.
Also have, according to the camera head that the present invention relates to, in the detected human face region of people's face detecting unit, further set photometry region, set in the photometry region personnel selection face detecting unit spare to the inspection side to the people face part carry out photometry, thereby can carry out high accuracy exposure control to character facial.
And then, according to the camera head that the present invention relates to, when the character facial size that people's face detecting unit spare side arrives less, and during one-man's face, detected people's face is not carried out photometry, but by according to predefined conventional treatment calculation exposure amount, control exposes, like this, even if when having bigger light and shade difference between the background around face and its, also can restrain the influence of the background parts brightness around the face.
Description of drawings
Fig. 1 relates to a camera head example of the embodiment of the invention 1 to 4 for expression, i.e. (a) front view of digital camera, (b) vertical view, (c) rearview.
Fig. 2 is for representing to relate to a camera head example of the embodiment of the invention 1 to 4, the i.e. module map of digital camera built-in system structural outline.
Fig. 3 is the figure that frames images is divided into a plurality of zone states for expression CCD picture.
Fig. 4 is input to the figure of a subject character image data example in the CCD picture that is divided into a plurality of zones for expression.
Fig. 5 is the flow chart of control exposure in the expression embodiment of the invention 1.
Fig. 6 (a) is the figure of the subject image on the face that comprises the personage shown on the expression LCD display and body part and background mountain peak, (b) for represented the figure of rectangle frame on detected character facial.
Fig. 7 (a) and (b) for the expression vary in size the state diagram of the photometry region generation respective change of its body part according to subject character facial in the picture.
Fig. 8 (a) is different according to subject character facial position in the picture for expression with (b), the state diagram of the photometry region generation respective change of its body part.
Fig. 9 is the flow chart of the control that exposes in the expression embodiment of the invention 2.
Figure 10 is the flow chart that is illustrated in the control that exposes in the embodiment of the invention 3.
The figure of the subject image that comprises character facial and body part and background mountain peak that Figure 11 (a) shows on the LCD display for expression, (b) be the figure that shows first square frame on detected character facial, (c) zone that is in the first square frame correspondence for expression is with the figure of interior second square frame less than this regional extent.
Figure 12 is in the zone of the first square frame correspondence that shows on the detected character facial for expression, little and this regional extent, and do not comprise the figure of second square frame on the first square frame top.
Figure 13 is the flow chart of the control that exposes in the expression embodiment of the invention 4.
Figure 14 for when detected face size littler than predefined setting size, and when detecting a plurality of people's face, show the figure of square frame on the face respectively detected a plurality of people.
Embodiment
Below, the present invention will be described in accordance with the embodiments illustrated.
Fig. 1 (a) is for relating to a camera head example of the embodiment of the invention 1, it is the front view of digital still image camera (being designated hereinafter simply as digital camera), Fig. 1 (b) is its vertical view, Fig. 1 (c) is its rearview, and Fig. 2 is the built-in system structural outline module map of digital camera shown in presentation graphs 1 (a) and (b), (c).
(surface structure of digital camera)
Shown in Fig. 1 (a) and (b), (c), relate to the digital camera top of the embodiment of the invention 1, dispose discharge shutter release button SW1, pattern dish SW2, secondary LCD display is secondary LCD 1.In the front of digital camera promptly in the side of subject, the lens barrel unit 7 that is provided with photoflash lamp illuminating part 3, optical finder 4, range cells 5, remote control light accepting part 6 and comprises a plurality of optical systems.
At the back side of digital camera, the described optical finder 4, wide-angle aperture that is provided with LCD display 10, AF (automatic focus) LED8, photoflash lamp LED9, eyepiece aspect regulate setting disengage button SW5, menu button SW6 that button SW3, the aperture of looking in the distance regulate button SW4, self-timer, on move photoflash lamp and set button SW7, the button SW8 that moves to right, display switch SW9, move down microshot switch SW 10, move to left and confirm image button SW11, decision button SW12, mains switch SW13 and fast access button SW14.In addition, have in the side of digital camera and be provided with storage card/battery hatch 2.
(the built-in system structure of digital camera)
Deposited among the ROM108 in CPU module 104c with the control program that can separate the reading symbol record or the parameter that is used to control.When the mains switch SW13 of this digital camera is on-state, described program downloads in the not shown main storage, described CPU module 104c is according to the operation of this program control camera various piece, and meanwhile, part (local) SRAM104d that temporarily puts into RAM107 and microprocessor 104 such as necessary data that will be used for controlling preserves.
ROM108 adopts erasable flash memory, and so just the parameter that can change control program or be used to control is carried out function upgrading easily.
CCD101 is the solid-state imager that optical imagery is carried out light-to-current inversion, is provided with CDS102a, AGC102b, A/D102c, TG102d among F/E (preposition loop)-IC102.CDS102a is used to carry out dual coherent sampling, is used for the eliminating image noise.The AGC102b adjustment that is used to gain.A/D102c is used for digital signal conversion.
TG102d is used to take place the driving timing signal of CCD101 and F/E-IC102.CCD101 and F/E-IC102 provide vertical synchronization signal (VD signal) and the level signal same period (HD signal) by the CCD1 control module 104a in the microprocessor 104, are controlled by the CPU module 104c in the microprocessor 104.
Microprocessor 104 is used for the dateout that outputs to F/E-IC102 from CCD101 is carried out white balance setting or gamma correction setting, and has: it is the CCD1 signal processing module 104a of VD-HD signal that described VD signal and HD signal are provided, carry out the CCD2 signal processing module 104b of briliancy data chromatism data conversion by filtration treatment, the CPU module 104c of each described part operation of control camera, temporarily deposit part (local) SRAM104d of described necessary data that is used to control etc., carry out the USB module 104e of usb communication with external device (ED)s such as computers, the serial module 104f that carries out serial communication with external device (ED)s such as computers, carry out the JPEGCODEC module 104g that the JEPG compression is amplified, handle the RESIZE module 104h that image data file is amplified/dwindle by between mending, change view data into video signal and be presented at TG signal display module 104i on the external displays such as LCD or TV, and the storage card control module 104j that is used for the storage card 124 of control store captured image data.
SRAM103 is used for image temporary storage data when microprocessor 104 is made various view data and handled.The view data of temporarily depositing can be, such as, from CCD101, be taken into and in CCD1 signal processing module 104a, set and the gamma setting becomes " RAW-RGB view data " or is for conversion into " YUV view data " or is collapsed into " jpeg image data " or the like through JEPG in JPEGCODEC module 104g through briliancy data chromatism data in CCD2 signal controlling module 104b via F/E-IC102 through white balance.
Video recording AMP118 is used for the amplifier that will carry out 75 Ω impedance conversions from the video signal of TV signal display module 104i output, and video recording socket 119 is for connecting the socket of external display tool such as TV.Usb 1 22 carries out the connector that USB is connected for being used for external device such as personal computer.
Driven in series loop 123a is when being used for carrying out serial communication with external device such as personal computers, the signal of serial module 104f output is carried out the loop of voltage transformation, and RS-223C connector 123b is for carrying out connector connected in series with external device such as personal computer.
SUB-CPU109 is the CPU with the built-in ROMRAM of one chip, be used for the output signal of the operation keys unit of SW1 to SW14 or remote control light accepting part 6 is outputed to CPU module 104c as photographer's operation information, perhaps the digital camera state of CPU module 104c output be converted to control signal respectively and output to secondary LCD1, AF LED8, photoflash lamp LED9, siren 113.
Secondary LCD1 can be, for example is used to show the display part of residue photography number, and lcd driver 111 is for being used for being driven by the Sub-CPU109 output signal driving loop of secondary LCD1.The LED of the burnt state of meeting when AF LED8 takes for expression, photoflash lamp LED9 is the LED of expression flashlight charging state.
The key loop that the operation keys unit of SW1 to SW14 is operated for photographer, remote controller light accepting part 6 is for accepting from photographer's operation signal or from the deliver letters receiving part of signal of machine of remote control.
Below the AE operation of the described digital camera of explanation is the automatic exposure operation.
By after discharging shutter SW1 connection AE operation, the CPU module of microprocessor 104 just comes into effect AE and operates when partly.Be specially, such as, photographer at first carries out people's face and detects processing, the character facial in the inspection image data after stirring pattern dish SW2 setting people face detecting operation pattern.
Say in further detail and be exactly, subject is by the varifocal optical system 71 and the Focused Optical system 72 of lens barrel unit 7, subject is after the sensitive surface imaging of CCD101, as mentioned above, press shot object image and from CCD101, export corresponding viewdata signal, this signal carries out signal processing through handling among the CCD1 signal processing module 104a that is input to microprocessor 104 in the F/E-IC102 that comprises CDS102a, AGC102b and A/D102c, write SDRAM103 then.
Below describe the computational methods of described AE evaluation of estimate in detail.
Fig. 3 represents that with the CCD101 picture be the example that frames images is divided into a plurality of whens zone, is divided into A1 to A256 zone among the figure.Fig. 4 is for having shown the figure of the bust of shot object image in being divided into the picture Fig. 3 in a plurality of zones.At this, Fig. 3 picture displayed slightly is corresponding with LCD display 10 picture displayed sizes.
Microprocessor 104 is each pixel data (R, G, B) according to the view data from the CCD101 input, to photometry object picture each zone of A1 to A256 (referring to Fig. 3), calculates briliancy data Y 1 respectively to Y256.Below represent each regional briliancy data computation formula.Rn in following calculating formula, Gn, Bn represent the mean value of pixel data (R, G, B) in each zone respectively.
First area: Y1=0.299R1+0.587G1+0.114B1
Second area: Y2=0.299R2+0.587G2+0.114B2
…
N zone: Yn=0.299Rn+0.587Gn+0.114Bn
At this, if people's face detecting pattern carrying out calculating the briliancy data that contain face area respectively when face's photometry is handled, and each the regional briliancy data mean value that will calculate is the AE evaluation of estimate as briliancy data Y face.Promptly in example shown in Figure 4, with respect to each regional briliancy data mean value of regional A71 to A75 shown in Figure 3, A87 to A91, A103 to A107, A119 to A123, A135 to A139, A151 to A155, A167 to A171 and A183 to A187 as briliancy data Y face.
If subject personage's body part is carried out the photometry processing, then calculate the briliancy data that comprise the body part zone respectively, be the AE evaluation of estimate with the regional briliancy data mean value of calculating as briliancy data Y body.Promptly in example shown in Figure 4, each regional briliancy data mean value of A198 to A204, A214 to A220, A230 to A236 and A246 to A252 as briliancy data Y body.
Then, be that face's weight coefficient, n2 are that (n1 〉=n2, n1+n2=1), calculate briliancy data Y y according to following formula is the AE evaluation of estimate to the body part weight coefficient with n1.
Yy＝Yface×n1+Ybody×n2
If consider to be divided into the picture CCD101 in a plurality of zones when whole, calculate in the whole image briliancy data separately in each zone of A1 to A256 respectively, with the mean value of the whole image briliancy data calculated as briliancy data Y all.Then, be that face's weight coefficient, n2 are the body part weight coefficient with n1, n3 is whole, and (n1 〉=n2 〉=n3 n1+n2+n3=1), calculates AE evaluation of estimate briliancy data Y y according to following formula for the weight coefficient of whole image.
Yy＝Yface×n1+Ybody×n2+Yall×n3
In addition, if when adopting conventional photometry beyond described people's face detecting pattern to handle, use in central emphasis Exposure Metering, middle body Exposure Metering, some Exposure Metering and the multi-region balance Exposure Metering any one mode to calculate briliancy data Y y.
When the value of depositing in the target briliancy data Y x among the ROM108 in advance with subject is carried out photometry then result calculated be that the value of described briliancy data Y y is when consistent, the CPU module 104c of microprocessor 104 judges that exposure is appropriate, and the calculation exposure amount makes the briliancy data Y y that calculates equate with target briliancy data Y x, set conditions of exposure according to the exposure of calculating again, the f-number that comprises the aperture 73a of CCD101 electronic shutter speed, lens barrel unit 7 is that the photosensitivity of hatch bore diameter and CCD101 is the yield value of F/E-IC102 amplifying return circuit.
Be specially, if increase the numerical value of briliancy data Y y, CPU module 104c carries out one of them or plural operation of " electronic shutter speed of the CCD101 that slows down ", " hatch bore diameter that adds large aperture 73a " and " improving the photosensitivity of CCD101 ".Otherwise,, then can carry out and above-mentioned opposite operation if reduce the numerical value of briliancy data Y y.
In addition,, can enumerate following (a) and (b), (c) three kinds of known methods, can adopt any method in these methods, also can adopt known method in addition to detect people's face about in the CCD101 picture, detecting the method for subject people face.
(a) as " television meeting will " Vol.49, No.6, pp.787-797 is entitled as in (1995) described in " about effectively revising the suggestion of HSV color specification system row to extracting human face region out " literary composition, coloured image is made mosaic image, pass through order in the skin color area, extracting the method for face area out.
(b) as " electronic intelligence Communications Society will " Vol.74-D-II, No, 11, pp.1625-1627 is entitled as in (1991) described in " method of extracting human face region in static deep or light sight image out " literary composition, utilize the each several part geometric characteristic of formation personage full-faced photo heads such as hair or mouth, extract the method in positive personage's head field out.
(c) be entitled as in (1991) described in " human face region that is used for video telephone detect with and effect " literary composition as " image experiment " 1991-11, in the animation picture, utilize personage's movement delicate between square frame to cause the bust contour edge of generation, extract the method for personage's full-faced photo out.
Next, with reference to flow chart shown in Figure 5,, making subject personage's face and body part be able to proper exposure and describing how controlling exposure in the present embodiment.
After photographer half connected AE operation (S1: discharge shutter ON) by release shutter SW1, the CPU module 104c of microprocessor 104 judged that whether photographer sets the pattern dish is people's face detecting operation pattern (S2).
Be people's face detecting operation pattern (S2: be) if S2 judges to set, CPU module 104c adopts such as above-mentioned known method for detecting human face, and (S3) handled in view data (YUV view data) the implementation people face detection of depositing among the SDRAM103.Leave the view data among the SDRAM103 in, corresponding by the shot object image view data of CCD101 output after imaging on the CCD101 sensitive surface with varifocal optical system 71 and Focused Optical system 72 through lens barrel unit 7.
In S4, if in view data, detect personage's face (S4: be), CPU module 104c on being shown in LCD display 10 with the corresponding shot object image of view data in character facial on show rectangle frame, and notify photographer to detect people's face (S5).Such as, when the face that comprises the personage shown in the displayed map on the LCD display 6 (a) and body part and background mountain peak, shown in Fig. 6 (b), show rectangle frame A and notify photographer to detect people's face in detected character facial.
Then, be that rectangle frame A is the AE zone as photometry region with detected character facial, carry out photometry and handle (S6).In handling, the S6 photometry calculates the briliancy data Y face of face.
After in S6, having carried out character facial photometry processing, will be positioned at the following body part of this face and carry out photometry processing (S7) as photometry region.In handling, the photometry of S7 calculates the briliancy data Y body of body part.
The photometry region of body part is an interlock face photometry region and determining.The photometry region that is body part changes according to the big or small position of face's photometry region.Be specially, the width of body part photometry region is that a peak width is respectively expanded at face photometry region width two ends to the left and right relatively.And the height of body part photometry region is, begins till face's height twice part from the zone of adjacency face.But, when running into the picture lowermost distal end region, till lowermost distal end region.In addition, the CPU module 104c of people's face detecting unit can also detect simultaneously the above-below direction of character facial, when the personage also can judge when horizontal face towards, detect personage's body part.
For example, shown in Fig. 7 (a) and (b), along with varying in size of subject character facial photometry region rectangle frame A1, A2 in the picture, body part photometry region rectangle frame B1, the B2 of its below change.Also have, shown in Fig. 8 (a) and (b), along with the change in location of subject character facial photometry region rectangle frame A1, A2 in the picture, body part photometry region rectangle frame B1, the B2 of its below also change.
Then, according to the briliancy data Y face of face's photometry result among the S6 and S7 body part photometry result's briliancy data Y body, CPU module 104c is positioned over emphasis the photometry result's of face briliancy data Y face, the weight coefficient that occupies the ratio increasing photometry result of face of picture according to face, carry out the calculating of above-mentioned briliancy data Y y, calculate suitable exposure (S8) according to the briliancy data Y y that obtains again.
Subsequently, CPU module 104c carries out exposure condition setting according to the exposure of calculating among the S8 and handles (S9), according to the conditions of exposure drive motor device of setting 75 and control aperture 73a, meanwhile, control CCD101 electronic shutter speed.
In addition, if judge it is not people's face inspection side operator scheme (S2: not) among the S2, and in above-mentioned S4, do not detect people's face (S4: not), then carry out the conventional photometry of setting and handle (S10) by CPU module 104c, such as carrying out photometry by central emphasis Exposure Metering, according to photometry calculation exposure amount (S11) as a result, set conditions of exposure according to the exposure of calculating again and handle (S9).
As mentioned above, the camera head that relates to present embodiment is that digital camera is when detecting the subject character facial, according to the big or small position probing body part of detected character facial, then according to the photometry result of character facial that is detected and the body part control that exposes.For this reason, regardless of scope or the position of personage in the picture, can both make personage's face and body part obtain suitable exposure.
Embodiment 2
The foregoing description 1 is the situation of carrying out proper exposure about face and body part at subject personage in the picture, present embodiment is then except subject personage's face and body part, also consider other zones in the picture, promptly considered whole image.
Digital camera in the present embodiment has the structure identical with digital camera illustrated in figures 1 and 2.
Below, with reference to flow chart shown in Figure 9,, make subject personage's face and body part and other parts zone in addition to how controlling exposure in the present embodiment, promptly whole image obtains proper exposure and describes.
The processing of S1 to S7 is identical with embodiment 1 shown in Figure 5 in the present embodiment, thereby omits the explanation of handling about S1 to S7.
After in S7, personage's body part being carried out photometry and handle as photometry region, whole image is carried out photometry as photometry region handle (S7a).In handling, this photometry calculates briliancy data Y all.
According to the briliancy data Y body of body part photometry result among briliancy data Y face, the S7 of face's photometry result among the S6 and briliancy data Y all of whole image photometry result, calculate briliancy data Y y by the size of the shared aspect ratio of face by CPU module 104c.Calculating focuses on the photometry result of face, strengthens face's photometry weight coefficient as a result.Calculate suitable exposure (S8a) according to the briliancy data Y y that calculates again.
Then, carry out exposure condition setting by CPU module 104c according to the exposure of calculating among the S8a and handle (S9), according to the conditions of exposure drive motor device of setting 75, control aperture 73a controls the CCD101 electronic shutter speed simultaneously.
In addition, in the present embodiment, not people's face detecting operation operator scheme (S2: not), and in described S4, do not detect (the S4: not) of face if judge, then CPU module 104c carries out the conventional photometry of setting and handles (S10), handles such as carry out photometry with central emphasis Exposure Metering.According to this photometry calculation exposure amount (S11) as a result, carry out exposure condition setting according to the exposure of calculating again and handle (S9).
As mentioned above, the camera head that relates to present embodiment is that digital camera is when detecting the subject character facial, big or small position probing body part according to character facial, and then according to the photometry result of the personage's who is detected face and body part and the picture integral body control that exposes, thereby, make that personage's face and body part can both obtain suitable exposure, and the relative background of this exposure has static sensation regardless of scope or the position of personage in the picture.
In people's face detecting operation pattern of present embodiment,, when this detected character facial is set photometry region, reduce regional extent photometry region is positioned in the character facial when in the subject image, detecting character facial.Digital camera structure in the present embodiment and Fig. 1, digital camera structure shown in Figure 2 are identical.In addition, in the present embodiment, CPU module 104c has people's face detecting unit of putting down in writing in the invention described above content, the function of exposure control unit, photometry region setup unit and photometry unit.
Below, with reference to the control that how to expose in the flowchart text present embodiment shown in Figure 10.
When photographer half by after discharging shutter SW1 and connecting AE operation (S21), whether the CPU module 104c judgment model dish SW2 of microprocessor 104 is set by photographer and is people's face detecting operation pattern (S22).
When judge setting to people's face detecting operation pattern (S22: be) among the S22, CPU module 104c adopts such as above-mentioned known method for detecting human face etc., carries out people's face and detects and handle (S23) depositing in view data (YUV view data) among the SDRAM103.Leave the view data among the SDRAM103 in, corresponding by the shot object image view data of CCD101 output after imaging on the CCD101 sensitive surface with varifocal optical system 71 and Focused Optical system 72 through lens barrel unit 7.
Then, in S24, when from view data, detecting personage's face (S24: be), carry out control by CPU module 104c, subject image to the view data correspondence of demonstration on the LCD display 10, on its character facial, show first square frame of rectangle, and notify photographer to detect people's face (S25).
Promptly, such as shown in Figure 11 (a), when on LCD display, having shown the subject image of the face that comprises the personage and body part and background mountain peak, shown in Figure 11 (b), on detected character facial, show the first square frame C1 of rectangle, and will notify photographer to detect people's face (S25).This first square frame C1 is enclosed in whole detected character facial wherein, and part is positioned at beyond the character facial near each right angle.
Then, in the present embodiment, shown in Figure 11 (c), CPU module 104c control shows the rectangle second square frame C2, and to set this second square frame C2 The corresponding area be photometry region (S26).The described second square frame C2, is positioned in the detected character facial with interior and less than this regional extent in the first square frame The corresponding area.
Then, CPU module 104c judges that the character facial position set among the second square frame C2 is whether near the picture center in S27, such as Figure 11 (c), near the face of judging the personage is positioned at the picture center when (S27: be), will carries out photometry with the second square frame C2 of interior setting as photometry region in character facial and handle (S28).In handling, the S28 photometry calculates the briliancy data Y face of face.
Subsequently, according to the photometry result's of S28 face briliancy data Y face, calculate suitable exposure (S29) by CPU module 104c.
According to the exposure of calculating among the S29, CPU module 104c carries out exposure condition setting and handles (S30), and according to the conditions of exposure drive motor device of setting 75, control aperture 73a controls the CCD101 electronic shutter speed simultaneously.
In addition, near the character facial position of in judging the second square frame C2 among the above-mentioned S27, setting (S27: not) not the center at picture the time, to be set in character facial earlier by CPU module 104c control and carry out photometry processing (S31) as photometry region, and then whole image be carried out photometry handle (S32) with the second interior square frame C2.
According to the briliancy data Y all of whole image photometry result among the briliancy data Y face of face's photometry result among the S31 and the S32, CPU module 104c calculates briliancy data Y y by the shared aspect ratio of face.Calculating focuses on the photometry result's of face the briliancy data Y face, strengthens face's photometry weight coefficient as a result.Calculate suitable exposure (S33) according to the briliancy data Y y that calculates again.
Then, carry out exposure condition setting processing (S30) according to the exposure that S33 calculates, again according to conditions of exposure drive motor device of setting 75 and control aperture 73a, meanwhile, control CCD101 electronic shutter speed.
In addition, if judge it is not people's face detecting operation pattern (S22: not) among the above-mentioned S22, and judgement does not detect people's face (S24: deny) in above-mentioned S24, and then CPU module 104c carries out the conventional photometry of setting and handles (S34), such as carry out the photometry processing with central emphasis Exposure Metering.According to this photometry calculation exposure amount (S35) as a result, carry out exposure condition setting according to the exposure of calculating again and handle (S30).
As mentioned above, according to the camera head that relates to present embodiment is digital camera, when people's face detecting pattern detects character facial in the subject image, when this detected character facial is set photometry region, can make photometry region be positioned in the character facial, like this by reducing regional extent, even it is poor that face and its outside are that the background parts of face periphery is compared the bigger light and shade of existence, character facial can not be subjected to the influence of the peripheral background lightness of face yet and obtain suitable exposure.
And then when people's face detecting operation pattern detected character facial in the subject image, even personage's face not near the picture center, can make also that character facial obtains suitable exposure, and background had the sense of equilibrium relatively.
In addition, in the present embodiment, for example, as shown in figure 12, when the subject image on the face that comprises the personage and body part and background mountain range is presented on the LCD display, after showing the rectangle first square frame C1 on the detected character facial, can also be controlled at the corresponding zone of this first square frame C1 with the interior demonstration rectangle second square frame C3 by CPU module 104c, and to set this second square frame C3 The corresponding area be photometry region.This second square frame C3 is less than the regional extent of the first square frame C1, and do not comprise the top of character facial among the first square frame C1.
Embodiment 4
In the present embodiment, when people's face detecting operation pattern detects character facial in the subject image, and this detected character facial is not carried out predefined conventional photometry and is handled during less than predefined setting size to detected character facial photometry.
Digital camera in the present embodiment also has the structure identical with Fig. 1 and Fig. 2.In addition, CPU module 104c has people's face detecting unit of putting down in writing in the foregoing invention content, the function of exposing control unit, light detecting means in the present embodiment.
Below, with reference to the exposure control in this enforcement of the flowchart text reason shown in Figure 13.
In the present embodiment, the processing of S21 to S24 is identical with embodiment shown in Figure 10 3.When from view data, detecting character facial (S24: be), judge that by CPU module 104c whether detected character facial is greater than predefined size (S24a) among the S24.
If judge among the S24a that detected face is greater than predefined setting size (S24a: be), then with reference to Figure 11 (c), subject image to the view data correspondence that shows in the LCD10 display, be controlled at first square frame that shows rectangle on the character facial by CPU module 104c, and notify photographer to detect people's face (S25).
And when judging among the S24a that detected face is less than predefined setting size (S24a: in the time of not), judge whether to detect a plurality of faces (S24b).If judging, S24b detects a plurality of faces (S24b: be), then to the subject image of the view data correspondence that shows on the LCD display 10, be controlled at by CPU module 104c and show the rectangle first square frame D on detected a plurality of character facial respectively, such as shown in figure 14, among the figure two people's faces.And notify photographer to detect a plurality of people's faces (S25).
The processing of S26 to S33 is identical with embodiment illustrated in fig. 10 3.
In addition, when judging in described S22 is not people's face detecting operation pattern (S22: not), judge in described S24 and do not detect (the S24: (S24b: not) not) and when judging that in described S24b not detecting a plurality of faces promptly only detects people's face of face, carry out the conventional photometry of setting by CPU module 104c and handle (S34), handle such as carry out photometry with central emphasis Exposure Metering, according to this photometry calculation exposure amount (S35) as a result, carry out exposure condition setting according to the exposure of calculating again and handle (S30).
Like this, according to the related camera head of present embodiment is digital camera, from the subject image, detect under the situation of character facial in people's face detecting operation pattern, if this detected character facial size is less and have only a face, then detected face is not carried out photometry and handle the calculation exposure amount according to predefined conventional photometry, like this, even if face compares with its peripheral background bigger light and shade difference is arranged, the brightness that also can restrain the peripheral background parts of the face control that exposes.
And, detect under the situation of character facial from the subject image in people's face detecting operation pattern, even detected character facial size is less, when detecting a plurality of face, can carry out suitable exposure to a plurality of personages with these detected a plurality of faces respectively as photometry region.
Claims (23)
1. camera head with automatic exposure function is characterized by and possesses:
Image unit is taken subject, and exports corresponding view data according to shot object image;
People's face detecting unit detects people's face the picture that the view data of exporting from described image unit obtains;
The first photometry unit carries out photometry with the detected character facial of described people's face detecting unit as photometry region;
The second photometry unit judges that the detected people of described people's face detecting unit descends direction on the face, carries out photometry with the part below the face as photometry region;
The exposure control unit according to the photometry of the photometry result of the described first photometry unit and described second photometry unit calculation exposure amount as a result, is carried out exposure control according to the exposure of calculating.
2. camera head according to claim 1 is characterized by, and the face that the described second photometry unit is carried out photometry is with the pairing photometry region in lower part, and the people in the detected described picture of the described people's face of interlock detecting unit is bold little.
3. camera head according to claim 1 is characterized by, and the face that the described second photometry unit is carried out photometry is with the pairing photometry region in lower part, the people's face position in the detected described picture of the described people's face of interlock detecting unit.
4. according to any one described camera head in the claim 1 to 3, it is characterized by, described exposure control unit is calculated exposure according to described first photometry unit photometry result and the described second unit photometry result's weighted average.
5. according to any described camera head in the claim 1 to 3, it is characterized by,
Have the 3rd photometry unit, the 3rd photometry unit is in the described picture, and the zone except the photometry region of the photometry region of the described first photometry unit and the described second photometry unit is as photometry region;
Described exposure control unit is calculated exposure according to the photometry result of the described first photometry unit and the photometry result of the described second photometry unit and the photometry result of described the 3rd photometry unit.
6. camera head according to claim 5 is characterized by, and the photometry region of described the 3rd photometry unit is whole described picture.
7. according to claim 5 or 6 described camera heads, it is characterized by, described exposure control unit is calculated exposure according to the described first photometry unit photometry result and described second photometry unit photometry result and described the 3rd photometry unit photometry result's weighted average.
8. according to claim 4 or 7 described camera heads, it is characterized by, it is little to be bold according to the detected people of described people's face detecting unit, the described first photometry unit photometry result's of corresponding change weighting weight coefficient.
9. according to claim 4 or 7 described camera heads, it is characterized by,, strengthen the described first photometry unit photometry result's weight coefficient according to the detected people's face of described people's face detecting unit magnitude proportion.
10. exposal control method that is used to have the automatic exposure function camera head is characterized by and may further comprise the steps:
The shooting step is taken subject, according to the corresponding view data of shot object image output;
People's face detects step, detects people's face in the picture that described view data obtains;
The first photometry step is carried out photometry with detected character facial in described people's face detection step as photometry region;
The second photometry step judges that described people's face detects detected character facial above-below direction in the step, carries out photometry with the part below the face as photometry region;
The exposure controlled step is according to the photometry of the photometry result of the described first photometry step and described second photometry step calculation exposure amount as a result, according to the exposure of the calculating control that exposes.
11. exposal control method according to the described camera head of claim 10, it is characterized by, the face that will carry out photometry with the described second photometry step is with the pairing photometry region in lower part, and the people that the described people's face of interlock detects in the detected described picture of step is bold little.
12. exposal control method according to the described camera head of claim 10, it is characterized by, with the pairing photometry region in lower part, the described people's face of interlock detects the people's face position in the detected described picture in the step with the face that carries out photometry in the described second photometry step.
13. the exposal control method according to any one described camera head in the claim 10 to 12 is characterized by, described exposure controlled step is according to described first photometry step photometry result and the described second photometry step photometry result's weighted average calculation exposure.
14. the exposal control method according to any one described camera head in the claim 10 to 12 is characterized by,
Have the 3rd photometry step, the 3rd photometry step will comprise in the described picture, and the zone except the photometry region of the photometry region of the described first photometry unit and the second photometry unit is as photometry region;
Described exposure controlled step is calculated exposure according to the photometry result of the described first photometry unit and the photometry result of the second photometry unit and the photometry result of the 3rd photometry unit.
15. the exposal control method according to the described camera head of claim 14 is characterized by, the photometric range of described the 3rd photometry step is whole described picture.
16. exposal control method according to claim 14 or 15 described camera heads, it is characterized by, described exposure controlled step is calculated exposure according to the first photometry step photometry result and the second photometry step photometry result and the 3rd photometry step photometry result's weighted average.
17. the exposal control method according to claim 13 or 16 described camera heads is characterized by, it is little to be bold according to detected people in described people's face detection step, the described first photometry step photometry result's of corresponding change weight coefficient.
18. the exposal control method according to claim 13 or 16 described camera heads is characterized by, and detects in the step the detected people small scale of being bold according to described people's face, strengthens the described first photometry step photometry result's weight coefficient.
19. the camera head with automatic exposure function is characterized by and comprises:
Image unit is taken subject, and according to the corresponding view data of shot object image output;
People's face detecting unit detects people's face the picture that the view data of exporting from described image unit obtains;
The photometry region setup unit is further set photometry region in the detected face area of described people's face detecting unit;
The photometry unit, the described photometry region according to described photometry region setup unit sets carries out photometry to the detected people of described people's face detecting unit face part;
The exposure control unit is according to the photometry of described photometry unit calculation exposure amount as a result, according to the exposure of the calculating control that exposes.
20. camera head according to claim 19 is characterized by, described photometry region setup unit will be set at photometry region less than the zone of this regional extent in the detected human face region of described people's face detecting unit.
21. camera head according to claim 19, it is characterized by, described photometry region setup unit is set and is positioned in the detected human face region of described people's face detecting unit, less than this regional extent, and the zone that does not comprise this detected human face region upper portion is photometry region.
22. the camera head with automatic exposure function possesses:
Image unit is taken subject, and according to the corresponding view data of shot object image output;
People's face detecting unit detects people's face the picture that the view data of exporting from described image unit obtains;
The photometry unit as photometry region, carries out photometry with the detected character facial of described people's face detecting unit;
The exposure control unit, according to the photometry of described photometry unit calculation exposure amount as a result, according to the exposure of the calculating control that exposes,
It is characterized by,
When described exposure control unit judges that the detected human face region of described people's face detecting unit is less than predefined setting size, and detected people's face is when having only one, the detected people of described people's face detecting unit face part is not set at photometry region, handles and carry out predefined conventional photometry.
23. according to the described camera head of claim 22, it is characterized by, judge under the situation of the described detected human face region of people's face detecting unit less than predefined setting size at described exposure control unit, when described people's face detecting unit detects a plurality of people's face, control described photometry unit, detected a plurality of faces respectively as photometry region, are carried out photometry and handle.
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Cited By (23)
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| JP2010204304A (en) * | 2009-03-02 | 2010-09-16 | Panasonic Corp | Image capturing device, operator monitoring device, method for measuring distance to face |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3343921B2 (en) * | 1991-08-06 | 2002-11-11 | ミノルタ株式会社 | Person adaptive exposure control device |
| JP2000148980A (en) * | 1998-11-12 | 2000-05-30 | Fuji Photo Film Co Ltd | Image processing method, image processor and recording medium |
| JP2002298138A (en) * | 2001-03-29 | 2002-10-11 | Minolta Co Ltd | Person detector, and image pick-up device having the detector |
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| JP2006270218A (en) * | 2005-03-22 | 2006-10-05 | Nikon Corp | Electronic camera and electronic camera system |
| JP4537255B2 (en) * | 2005-04-28 | 2010-09-01 | 富士フイルム株式会社 | Imaging apparatus and imaging method |
-
2007
- 2007-04-26 JP JP2007116485A patent/JP5386793B2/en not_active Expired - Fee Related
- 2007-12-11 CN CN2007101996819A patent/CN101202841B/en active Active
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| CN104081757B (en) * | 2012-02-06 | 2017-10-17 | 索尼公司 | Image processing equipment, image processing method, image processing system |
| US10225462B2 (en) | 2012-02-06 | 2019-03-05 | Sony Corporation | Image processing to track face region of person |
| CN103813097A (en) * | 2012-11-07 | 2014-05-21 | 奥林巴斯映像株式会社 | Imaging apparatus and imaging method |
| CN103813097B (en) * | 2012-11-07 | 2017-11-28 | 奥林巴斯株式会社 | Camera device and image capture method |
| CN104219518A (en) * | 2014-07-31 | 2014-12-17 | 小米科技有限责任公司 | Photometry method and device |
| CN104219518B (en) * | 2014-07-31 | 2018-09-18 | 小米科技有限责任公司 | Light measuring method and device |
| US9674454B2 (en) | 2014-07-31 | 2017-06-06 | Xiaomi Inc. | Light metering methods and devices |
| CN104394326A (en) * | 2014-11-10 | 2015-03-04 | 广东欧珀移动通信有限公司 | Photometry method and terminal |
| CN104735362A (en) * | 2015-03-11 | 2015-06-24 | 广东欧珀移动通信有限公司 | Picture taking method and device |
| CN105516613A (en) * | 2015-12-07 | 2016-04-20 | 凌云光技术集团有限责任公司 | Intelligent exposure method and system based on face recognition |
| CN106131518A (en) * | 2016-06-30 | 2016-11-16 | 东莞市中控电子技术有限公司 | A kind of method of image procossing and image processing apparatus |
| CN106303250A (en) * | 2016-08-26 | 2017-01-04 | 维沃移动通信有限公司 | A kind of image processing method and mobile terminal |
| CN107018323A (en) * | 2017-03-09 | 2017-08-04 | 广东欧珀移动通信有限公司 | Control method, control device and electronic installation |
| CN107018323B (en) * | 2017-03-09 | 2019-07-12 | Oppo广东移动通信有限公司 | Control method, control device and electronic device |
| CN107370940B (en) * | 2017-06-16 | 2019-08-02 | Oppo广东移动通信有限公司 | Image acquiring method, device and terminal device |
| CN107241557A (en) * | 2017-06-16 | 2017-10-10 | 广东欧珀移动通信有限公司 | Image exposure method, device, picture pick-up device and storage medium |
| CN107370940A (en) * | 2017-06-16 | 2017-11-21 | 广东欧珀移动通信有限公司 | Image acquiring method, device and terminal device |
| CN108200352A (en) * | 2017-12-27 | 2018-06-22 | 努比亚技术有限公司 | A kind of method, terminal and storage medium for reconciling picture luminance |
| CN108200352B (en) * | 2017-12-27 | 2021-03-05 | 上海营湾医疗科技有限公司 | Method, terminal and storage medium for adjusting picture brightness |
| CN109068067B (en) * | 2018-08-22 | 2020-06-12 | Oppo广东移动通信有限公司 | Exposure control method and device and electronic equipment |
| CN109068067A (en) * | 2018-08-22 | 2018-12-21 | Oppo广东移动通信有限公司 | Exposal control method, device and electronic equipment |
| CN110971814A (en) * | 2018-09-30 | 2020-04-07 | 北京微播视界科技有限公司 | Shooting adjustment method and device, electronic equipment and storage medium |
| CN110971812A (en) * | 2018-09-30 | 2020-04-07 | 北京微播视界科技有限公司 | Shooting method and device, electronic equipment and storage medium |
| CN110062155A (en) * | 2019-03-25 | 2019-07-26 | 成都品果科技有限公司 | A kind of portrait based on automatic light measuring is taken pictures optimization system, method and apparatus |
| CN113545028A (en) * | 2019-09-25 | 2021-10-22 | 谷歌有限责任公司 | Gain control for face authentication |
| CN113545028B (en) * | 2019-09-25 | 2023-05-09 | 谷歌有限责任公司 | Gain control for facial authentication |
| US11687635B2 (en) | 2019-09-25 | 2023-06-27 | Google PLLC | Automatic exposure and gain control for face authentication |
| CN110572580A (en) * | 2019-10-10 | 2019-12-13 | 珠海格力电器股份有限公司 | photographing method suitable for mobile terminal and mobile terminal |
| CN110572580B (en) * | 2019-10-10 | 2020-11-03 | 珠海格力电器股份有限公司 | Photographing method suitable for mobile terminal and mobile terminal |
| CN113163101A (en) * | 2020-01-22 | 2021-07-23 | 浙江宇视科技有限公司 | Image exposure adjusting method, device, equipment and medium |
| CN113163101B (en) * | 2020-01-22 | 2023-02-28 | 浙江宇视科技有限公司 | Image exposure adjusting method, device, equipment and medium |
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| Publication number | Publication date |
|---|---|
| JP5386793B2 (en) | 2014-01-15 |
| CN101202841B (en) | 2010-07-21 |
| JP2008170932A (en) | 2008-07-24 |
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