CN100526967C - Flash lamp controlling system and method for backlight shooting - Google Patents
Flash lamp controlling system and method for backlight shooting Download PDFInfo
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- CN100526967C CN100526967C CN 200610161157 CN200610161157A CN100526967C CN 100526967 C CN100526967 C CN 100526967C CN 200610161157 CN200610161157 CN 200610161157 CN 200610161157 A CN200610161157 A CN 200610161157A CN 100526967 C CN100526967 C CN 100526967C
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Abstract
A flashlamp control system of backlight photography and method are provided, which aim at setting aperture grade difference between back scene and fore scene firstly; then supplementing light by utilizing flashlamp, wherein, the step firstly measures light of the main body to be photographed to obtain aperture value of fore scene, and then measures light of the back scene to obtain aperture value of the back scene in a similar way; setting aperture grade difference between the back scene and the fore scene; focusing the main body to work out distance of the main body; reckoning flashlamp index the flashlamp should have to carry through backlight photography according to the aperture value obtained from aperture value difference.
Description
Technical field
The present invention relates to a kind of flash lamp control system and method for shadowgraph, be meant especially when shadowgraph, utilize the image pickup method of flashlamp light filling after the aperture progression difference of setting background and prospect again.
Background technology
When taking pictures, shadowgraph is one of shooting situation of the most difficult control, face sunlight or other light source such as the people who takes out of doors, and the people who is taken is back to sunlight or other light source, so the people who takes need fill flashlamp or other light source usually, allow needed main body can not produce because of the state of backlight can't identification shadow, and the effective flashlamp of using of known digital camera shortage removes to take the set-up function of good contrast, tends to because the relation of light filling causes the phenomenon of background overexposure.
When the utilization flashlamp is taken, f-number cooperates guide number (the Guide Number of flashlamp, the GN value) be important adjustment parameter, wherein, f-number equals focal length divided by effective aperture (f-number=focal length/effective aperture), is the f value in the digital camera specification, is used for adjusting the light-inletting quantity of unit interval when taking, general aperture indicates in modes such as f/8, F8, and it has reflected the light-inletting quantity when taking.
And the GN value, the intensity of each flashlamp is not unanimity, for the flashlamp of general consumption-orientation digital camera institute carry, flash light intensity is a definite value, can not adjust, thus can about exposure be the size of irradiation distance and aperture.Flash light intensity is represented with this GN value, the object distance that guide number equals object is multiplied by f-number (GN=distance * Aperture), the GN value is fixing, the expression flash intensity is fixed, then object object distance and f-number are inversely proportional to, and apart from numeral big more (main body is far away), f-number (f) is littler, and (then aperture is bigger, light-inletting quantity the more is the relation of inverse ratio in the certain hour).In addition, as if the big flashlamp of healing for the GN value, its amount of flash output is bigger, the main body far away of can throwing light on.
See also guide number shown in Figure 1 and calculate synoptic diagram, wherein be that to cooperate the GN value of certain light sensitivity (ISO value) to equal 32 with flashlamp 10 be example, if person taken picture a has 3 meters distance from flashlamp 10, then preferable f-number is 11 (GN value 32 is divided by distances 3), or is expressed as f/11; If person taken picture b is 4 meters a distance from flashlamp 10, then preferable f-number is 8 (GN value 32 divided by apart from 4), or is expressed as f/8; If person taken picture c is 8 meters a distance from flashlamp 10, then preferable f-number is 4 (GN value 32 divided by apart from 8), or is expressed as f/4, and by that analogy.
During shooting, if be under the situation of backlight, the main body thing is generally darker situation, take place for fear of this situation, usually the luminance brightness that when taking, needs first consideration prospect and background, can utilize flashlamp to carry out light filling (back-lighting compensation) this moment, and the main body thing can be known present, or as the style of shooting of following several known technology proposition under the backlight situation.
In the face of the photography under the backlight situation time, known technology proposes multiple different scheme, early as United States Patent (USP) the 4th, 690, promptly disclosed the method for under the backlight situation, using flashlamp for No. 536, it is a kind of exposure-control device that uses camera flash-light, when taking, measure the brightness of shot subject earlier, measure again except the brightness of shot subject with exterior domain, as background, then the brightness by shot subject and background produces the situation of an overexposure (over-exposure) in the situation of backlight, reaches under the situation of backlight and can balance glisten, purpose is controlled in exposure with general light source backlight.
United States Patent (USP) the 6th is more arranged, 950, provided for No. 141 can the control chart image-position sensor camera of exposure, no matter at preceding light (front-lighted), back light (back-lighted) or had and obtain an average exposure under the situation of bright light rays, particularly will there be the picture of object to be divided into 64 parts, camera then calculates mean flow rate to these 64 parts, comprise the mean value of the image first half, the different mean values of considering of mean value of Lower Half, so as to the exposure of control chart image-position sensor with other.
See also No. 20040101296 camera that discloses of U.S. Patent Publication case again with exposure control function, this camera includes and can judge whether that image is in the backlight adjustment function of backlight state, this function is after relatively utilizing the brightness of all images mean flow rate that brightness measurement table (photometry) measures and distance object in addition, camera is then carried out a suitable exposure control, and can utilize the flashlamp light filling, under the shooting of backlight, still can obtain the image of correct exposure with this.
With known manner, under the situation of shadowgraph, may (1) utilize the exposure value (EV value) of adjusting image capturing device to make prospect that bigger exposure value be arranged, or (2) utilize flashlamp to carry out light filling to prospect (shot subject).In the light filling mode of flashlamp, because image capturing device (as digital camera) will be judged a f-number by the exposure value that records, this f-number possibly can't carry out suitable adjustment with flashlamp and make partly overexposure of background.
Summary of the invention
The technical problem to be solved in the present invention is, at being different from the image pickup method of known technology exposure under backlight, the invention provides a kind of flash lamp control system and method for shadowgraph, it is a kind of photometry of carrying out prospect and background earlier, utilize image capturing device to set the aperture progression of background and prospect, utilize the image pickup method of flashlamp light filling again.
In order to solve above-mentioned technical matters, the invention provides a kind of flash lamp control system of shadowgraph, be used for an image capturing device, borrow the f-number difference of the prospect of setting and a background to carry out reversible-light shooting, described system comprises: a flashing light unit is used for the device of light filling when the reversible-light shooting for this image capturing device; One photometry unit, it carries out photometry at this prospect and this background; One aperture adjustment unit, in order to the control exposure, after photometry in order to adjust the stop opening size; One capturing images unit, it is focused, and carries out capturing images; One storage unit is used for the temporary image that is captured by this capturing images unit, and stores the f-number of this prospect and this background; One CPU (central processing unit), be the data processing unit of each unit of contact in this image capturing device, in order to control the action of each unit, this CPU (central processing unit) comprises: 1) aperture decision unit, it sets the aperture difference of this prospect and this background, and determines a f-number of taking; 2) an object distance computing unit, it calculates the object distance of this prospect in to defocused according to an imaging formula; 3) a GN value computing unit, it calculates a guide number according to the f-number of this this shooting and the object distance of this prospect.
Wherein the preferred embodiment of the flash lamp control system of shadowgraph includes a flashing light unit, and it can be the attached flashlamp that is hung on the image capturing device, and its guide number is for adjusting; Other has a photometry unit, its device for carrying out photometry at object; One aperture adjustment unit is arranged again, and it is after photometry and carrying out the aperture settings of background and prospect, in order to adjust the stop opening size, with the control exposure; One capturing images unit is arranged again, through defocused utilization is captured image as image sensing elements such as CCD, CMOS by camera lens, is digital signal with the image transitions that is captured again; One storage unit is arranged again, shooting such as can be in the shooting process temporary earlier image that is captured, memory shutter value and f-number need parameter, the captured digital document of finishing of storage.
At last, in image capturing device, get in touch with each unit and control the CPU (central processing unit) that each unit moves, comprising the various device for controlling flashlight of the present invention under shadowgraph of finishing, have aperture decision unit, object distance computing unit, GN value computing unit etc. at least.
In order to solve above-mentioned technical matters, the present invention also provides a kind of flash lamp control method of shadowgraph, it is characterized in that described method comprises:
To a prospect photometry, draw one first f-number of this prospect;
To a background photometry, draw one second f-number of this background;
After drawing the difference of this first f-number and second f-number, according to the aperture progression difference that this difference is set, the f-number when taking with decision;
Focus;
Warp is to the defocused object distance that draws this prospect;
Determine a guide number according to the object distance of this prospect f-number when taking; And
Carrying out light filling takes.
And the preferred embodiment of the flash lamp control method of its shadowgraph comprises that elder generation carries out photometry to the prospect of institute's desire shooting, draw first f-number of prospect according to the exposure value that detects, then, record an exposure value equally, and draw second f-number of background at partly photometry of background; Set the aperture progression difference of background and prospect afterwards according to required backlight effect, the i.e. difference of first f-number and second f-number, focus afterwards, and calculate the object distance of prospect according to imaging formula, again according to the f-number of the difference gained of above-mentioned first f-number and second f-number, utilize guide number to equal the guide number that relation that object distance is multiplied by f-number draws flashlamp, at last with predefined shutter value, f-number and the flashlamp light filling that cooperates guide number to take.
In sum, the f-number difference of the present invention's energy foregrounding and background cooperates the light filling measure of flashlamp to draw special reversible-light shooting effect again.
Description of drawings
Figure 1 shows that guide number calculates synoptic diagram;
Figure 2 shows that the shooting flow process under dark surrounds;
Fig. 3 is a preferred embodiment process flow diagram of the present invention;
Fig. 4 is a flash lamp control system Organization Chart of the present invention.
The main element description of reference numerals:
Person taken picture a
Person taken picture b
Person taken picture c
Flashing light unit 41
Photometry unit 42
Aperture adjustment unit 43
Capturing images unit 44
Storage unit 46
CPU (central processing unit) 400
Aperture decision unit 402
Object distance computing unit 403
GN value computing unit 405
Embodiment
The present invention is a kind of flash lamp control system and method for shadowgraph, is meant when shadowgraph, can utilize flashlamp to carry out light filling again by the aperture progression difference of setting background in the image capturing device (preferred embodiment is a digital camera) and prospect.
As out of doors cameraman in the face of sunlight or other light source, and the people who is taken is back to sunlight or other light source, usually when taking, need fill flashlamp or other light source, allow needed main body can not produce because of the state of backlight can't identification shadow, so exposure value (the Exposure Value of prospect and background learns in flash lamp control system provided by the present invention and method elder generation by the photometry instrument or the photometry function of filming apparatus itself, the EV value), comprise shutter (shutter) and f-number (aperture) etc., afterwards through decision prospect and desired luminance difference of background or aperture progression, and draw the f-number of a reversible-light shooting, when taking, borrow the flashlamp light filling to draw a photo again.
In general, under the situation of shadowgraph, the user utilizes flashlamp to carry out light filling to prospect (shot subject) mostly, or directly adjusts the EV value of image capturing device.Using flashlamp to carry out in the mode of light filling, because image capturing device will be judged a f-number by the exposure value that records, and this f-number possibly can't carry out suitable coordination with flashlamp and make partly overexposure of background, or light filling makes prospect produce shadow inadequately and still, so the flash lamp control system of shadowgraph proposed by the invention and method are a kind of method of carrying out reversible-light shooting at the correction of f-number.
The image pickup method that utilizes guide number to carry out sees also shown in Figure 2, is a shooting flow process under dark surrounds:
In the shooting process of general shutter priority (shutter priority), the shutter value is preferential the setting, then need determine a f-number to take, usually after the detecting of exposure value, extrapolate due aperture size, more need to cooperate physics (hardware) restriction of image capturing device itself, the shooting capabilities limits aperture size of image capturing device, f-number is expressed with the f value usually, comprises 2,2.8,4,5.6,8,11,16 numerals such as grade, numeral are bigger, and aperture is opened littler.
In shutter value decision back (step S201), after image capturing device is aimed at object, focus, normally utilize the key of partly tripping focus (step S203);
Afterwards, the object distance (p) of the object of obtaining according to imaging formula calculating, eyeglass is driven and focuses in this moment camera lens, because the imaging formula of spherical mirror is 1/p+1/q=1/f in the perfect optics, wherein p is that object distance, q are that image distance, f are focal length, in case focusing is finished, promptly learns focal distance f, image distance q (being the distance of imageing sensor and spherical mirror) is also for as can be known, so can learn object distance p (step S205) easily;
Then carry out the judgement of f-number, under this embodiment, the luminous quantity of f-number and flashlamp is closely bound up, the luminous quantity of flashlamp is represented with guide number (GN value) usually, except automatic flash light, the light quantity of general flashlamp is certain, thus can left and right sides depth of exposure be the object distance of aforementioned calculation and the size of aperture.Guide number equals object distance and is multiplied by f-number (Guide Number=Distance * Aperture), when just using flashlamp, the GN value of its exposure equals flashlamp to the distance of subject and the product that used f-number at that time, the guide number numeral is big more, and the output of expression amount of flash is big more.
In this embodiment because the guide number of flashlamp is known, so with it divided by the main body object distance, obtain this f-number (step S207), the shutter value that more determined of foundation therewith f-number take (step S209).
The above-mentioned guide number that utilizes calculates that the mode of f-number is if be applied under the situation of general shadowgraph, as the shooting situation of daytime back to light source (as the sun), the then process flow diagram of preferred embodiment of the present invention as shown in Figure 3.
Also embodiment as described above, the shutter value determines (step S301) before taking, then, because present embodiment is a shadowgraph, so the main body (prospect) that institute's desire is taken is carried out photometry earlier, can utilize the photometry function in the image capturing device, or utilize independently light meter at the prospect photometry, photometry is that this image capturing device is measured exposure value according to the light that detects, just object is subjected to the light situation, so that parameters such as one group of shutter value and f-number to be provided, this example is first f-number (step S303) that draws prospect;
Background at partly photometry of background, records an exposure value more equally in brighter situation in this example, is drawn second f-number (step S305) of background by the result of photometry;
Then, flash lamp control system provided by the present invention and method are complied with the aperture progression difference that required backlight effect is set background and prospect, the i.e. difference (step S307) of first f-number and second f-number by the user;
Set in the step of aperture progression difference in step S307, issuable situation has:
F-number when (1) taking is to transfer big background f-number according to progression, wherein the aperture progression of background can be transferred big in setting the back, but still than the aperture progression little (aperture is less) of prospect, take with this f-number, prospect is through the flashlamp light filling, background is then transferred the phenomenon that overexposure is arranged greatly because of aperture, for instance, second f-number of background is set the big one-level of first f-number than object, as when recording aperture f/8, then be transferred to f/5.6, make background produce the situation of overexposure, and background can't be subjected to flashlamp as a rule the light filling action of prospect is had the influence that increases exposure;
F-number when (2) taking is that wherein still the aperture progression than prospect is little for background aperture progression according to the background f-number of measuring, and then Bao Guangbuzu part utilizes flashlamp to carry out light filling;
F-number when (3) taking is the prospect f-number of turning down according to progression, and this moment, prospect needed to carry out light filling with flashlamp, made prospect that clear and bright image be arranged;
F-number when (4) taking is a prospect f-number of transferring big background f-number and while progression to turn down according to progression, and prospect is carried out light filling with flashlamp again with under-exposure at this moment, makes prospect that clear and bright image be arranged.
In the establishing method of the aperture progression difference in above-mentioned steps, one of them embodiment is for to set on the built-in function of image capturing device, be provided with the setting button as device and adjust progression difference, or set picture by other and set, so as to foregrounding and the needed aperture progression of background difference;
Focus afterwards, image capturing device is aimed at object to focus, and uses the function of automatic camera, the automatic built-in focusing of digital camera usually, focus as utilizing the key of partly tripping, or other produces the function (step S309) of identical focusing effect;
Afterwards, embodiment as described above calculates the object distance of object (prospect) according to imaging formula, is to learn object distance (distance to object) (step S311) by known image distance (distance to image) and focal length (distance to focus);
F-number during according to the shooting of the difference gained of above-mentioned first f-number and second f-number, and utilize guide number to equal the guide number that relation that object distance is multiplied by f-number draws flashlamp, that is decision light filling brightness (step S313) that flashlamp produced, at last with above-mentioned shutter value, f-number and the flashlamp light filling that cooperates guide number to take (step S315).
For instance, carry out photometry earlier, can be by the image capturing device direct photometry or by light meter photometry on the spot, as the background aperture that records is that f/8, shutter are 1/125s, prospect is that f/4, shutter are 1/125s, utilizes the built-in function of image capturing device provided by the present invention to set background than the bright one-level of prospect (the big one-level of aperture), and the expression f-number that background and prospect differed from is set at one-level, as 2.8,3.2,4,5.6,8,11 equivalences be spaced apart one-level; The key of then partly the tripping action of focusing, and to calculate prospect distance according to imaging formula be 3 meters, at this moment, aperture settings is f/5.6, this f-number 5.6 is to be calculated by the processor in the image capturing device, with the big one-level of background aperture, promptly change f/5.6 into by f/8, be overexposure (over exposure) compared to normal exposure.
Behind the decision aperture, processor calculates flash light intensity, because the measured aperture of prospect is f/4 originally, but aperture uses and is f/5.6, just use the flashlamp light filling, because will mend f/4, just in the brightness (f/4+f/4=f/5.6) of aperture benefit f/4 during at f/5.6, so the GN value equals 3 (distances) and is multiplied by 4 (f-numbers), is 12; At this moment, flashlamp is set at GN=12, presses the shutter key shooting and promptly produces the photo of background than the bright one-level of prospect.
In like manner, under the bigger environment of prospect and background exposure value difference, can set the more different reversible-light shooting effect of large aperture value difference.
Fig. 4 discloses the flash lamp control system of shadowgraph of the present invention, be used for image capturing device, borrow the f-number difference of foregrounding and background to carry out shooting under the backlight situation, reach the special-effect of shadowgraph, for reaching purpose of the present invention, this flash lamp control system comprises the CPU (central processing unit) 400 of flashing light unit 41, photometry unit 42, aperture adjustment unit 43, capturing images unit 44, storage unit 46 and each unit of control etc. at least, and each unit is described below:
Flashing light unit 41 is this image capturing device is used for light filling when reversible-light shooting a device, can be the attached flashlamp that is hung on the image capturing device, and its preferred embodiment is the flashlamp of a brightness-adjusting, and promptly its guide number is for adjusting; Another embodiment is fixing flashlamp for its guide number;
The device of photometry unit 42 for carrying out photometry at object, wherein preferred embodiment is built in the interior light meter of image capturing device in being, and another embodiment can be the light meter of independent running, in order to object is measured the device of exposure value;
Aperture adjustment unit 43 is the unit of image capturing device inner control exposure control, after photometry and carrying out the aperture settings of background and prospect, in order to adjust the part of stop opening size, the control exposure;
Capturing images unit 44 is the camera lenses (comprising necessary lens set) that drive image capturing device, charge-coupled device (CCD) inductor (CCD) through defocused utilization being loaded into image capturing device or CMOS (Complementary Metal Oxide Semiconductor) inductor image sensing elements such as (CMOS) acquisition image, then the image that is captured is carried out opto-electronic conversion, be converted to digital signal, the image that is captured can be divided into prospect and background;
Storage unit 46 can be kept in the image that (buffer) captured by capturing images unit 44 earlier in shooting process, and can store carry out after the photometry the exposure value of the prospect that draws and background, take the parameter that needs with its shutter value and f-number etc., in addition, more can store the captured digital document of finishing;
The action of above-mentioned each unit of CPU (central processing unit) 400 controls, it can be a chip, comprises array apparatus down at least:
A. aperture determines unit 402, in preferred embodiment of the present invention, utilize photometry unit 42 to detect the exposure value of prospect and background respectively, and draw the first different f-numbers and second f-number respectively, because be in the situation of reversible-light shooting, so (background is brighter for second f-number, measured stop opening is less) should (prospect be darker greater than first f-number, measured stop opening is bigger), the present invention utilizes the aperture difference of aperture decision unit 402 foregroundings and background again, and after setting, aperture adjustment unit 43 is adjusted the part of stop opening size, with the control exposure, so as to shooting needed backlight effect, wherein the embodiment of establishing method can set on the built-in function of image capturing device, so as to foregrounding and the needed aperture progression of background difference;
B. object distance computing unit 403 is after focusing, calculates the object distance of object (prospect) according to imaging formula;
C.GN value computing unit 405, f-number when setting shooting according to said aperture decision unit 402, and according to mentioned above half during by focusing according to the object distance of the object (prospect) that imaging formula calculated, can utilize guide number to equal the formula to calculating that object distance is multiplied by f-number and go out guide number, then central control unit 400 just control chart as acquisition unit 44 acquisition images, and with image storage in storage element 46, to reach purpose of the present invention;
Specifically, the function of numerical evaluation unit such as said aperture decision unit 402, object distance computing unit 403 and GN value computing unit 405 can be reached by the firmware (firmware) that is arranged in the image capturing device, and this firmware is one to record the chip of above-mentioned each functional programs of execution.
In sum, the present invention is a kind of flash lamp control system and method for shadowgraph, and the f-number difference of energy foregrounding and background cooperates the light filling measure of flashlamp to draw special reversible-light shooting effect again.
But the above only is a preferable possible embodiments of the present invention; non-so promptly limit to scope of patent protection of the present invention; so the equivalent structure that all utilizations instructions of the present invention and accompanying drawing content are done changes, and all in like manner is contained in protection scope of the present invention explanation hereby.
Claims (10)
1. the flash lamp control method of a shadowgraph is characterized in that described method comprises:
To a prospect photometry, draw one first f-number of this prospect;
To a background photometry, draw one second f-number of this background;
After drawing the difference of this first f-number and second f-number, according to the aperture progression difference that this difference is set, the f-number when taking with decision;
Focus;
Warp is to the defocused object distance that draws this prospect;
Determine a guide number according to the object distance of this prospect this f-number when taking; And
Carrying out light filling takes.
2. the flash lamp control method of shadowgraph as claimed in claim 1 is characterized in that, the object distance of described prospect is in defocused foundation one imaging formula is drawn.
3. the flash lamp control method of shadowgraph as claimed in claim 1 is characterized in that, the f-number of described prospect and this background is to measure the f-number that exposure value is calculated after photometry.
4. the flash lamp control method of shadowgraph as claimed in claim 1 is characterized in that, during f-number when determining this shooting according to this aperture progression difference, the f-number during this shooting is to transfer big background f-number according to progression.
5. the flash lamp control method of shadowgraph as claimed in claim 1 is characterized in that, during f-number when determining this shooting according to this aperture progression difference, the f-number during this shooting is according to the background f-number of measuring.
6. the flash lamp control method of shadowgraph as claimed in claim 1 is characterized in that, during f-number when determining this shooting according to this aperture progression difference, the f-number during this shooting is the prospect f-number of turning down according to progression.
7. the flash lamp control method of shadowgraph as claimed in claim 1, it is characterized in that, during f-number when determining this shooting according to this aperture progression difference, the f-number during this shooting is to transfer big background f-number and the prospect f-number turned down of progression simultaneously according to progression.
8. the flash lamp control system of a shadowgraph is used for an image capturing device, borrows the f-number difference of the prospect of setting and a background to carry out reversible-light shooting, it is characterized in that described system comprises:
One flashing light unit is used for the device of light filling when the reversible-light shooting for this image capturing device;
One photometry unit, it carries out photometry at this prospect and this background;
One aperture adjustment unit, in order to the control exposure, after photometry in order to adjust the stop opening size;
One capturing images unit, it is focused, and carries out capturing images;
One storage unit is used for the temporary image that is captured by this capturing images unit, and stores the f-number of this prospect and this background;
One CPU (central processing unit) is the data processing unit of each unit of contact in this image capturing device, and in order to control the action of each unit, this CPU (central processing unit) comprises:
1) aperture decision unit, it sets the aperture difference of this prospect and this background, and determines a f-number of taking;
2) an object distance computing unit, it calculates the object distance of this prospect in to defocused according to an imaging formula;
3) a GN value computing unit, it calculates a guide number according to the f-number of this this shooting and the object distance of this prospect.
9. the flash lamp control system of shadowgraph as claimed in claim 8 is characterized in that, described flashing light unit is one to have the flashlamp that can adjust guide number.
10. the flash lamp control system of shadowgraph as claimed in claim 8 is characterized in that, described photometry unit is built in an interior light meter of this image capturing device or an independent light meter that operates in being.
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| CN 200610161157 CN100526967C (en) | 2006-12-07 | 2006-12-07 | Flash lamp controlling system and method for backlight shooting |
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| CN102480562A (en) * | 2010-11-23 | 2012-05-30 | 英业达股份有限公司 | Camera type mobile communication device and flash lamp control method thereof |
| CN104349072A (en) * | 2013-08-09 | 2015-02-11 | 联想(北京)有限公司 | Control method, device and electronic equipment |
| CN105635595B (en) * | 2015-05-29 | 2019-11-08 | 宇龙计算机通信科技(深圳)有限公司 | The control method of flash lamp, the control device of flash lamp and mobile terminal |
| CN105554407A (en) * | 2015-12-11 | 2016-05-04 | 小米科技有限责任公司 | Shooting control method and shooting control device |
| CN108124103A (en) * | 2017-12-28 | 2018-06-05 | 努比亚技术有限公司 | Image capturing method, mobile terminal and computer readable storage medium |
| CN110708463B (en) * | 2019-10-09 | 2021-08-24 | Oppo广东移动通信有限公司 | Focusing method, focusing device, storage medium and electronic equipment |
| CN110891145B (en) * | 2019-12-02 | 2021-08-17 | 联想(北京)有限公司 | Method for obtaining image by photographing and electronic equipment |
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