CN105791685B - Control method, control device and electronic device - Google Patents
Control method, control device and electronic device Download PDFInfo
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- CN105791685B CN105791685B CN201610116242.6A CN201610116242A CN105791685B CN 105791685 B CN105791685 B CN 105791685B CN 201610116242 A CN201610116242 A CN 201610116242A CN 105791685 B CN105791685 B CN 105791685B
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- face
- imaging device
- preview image
- field depth
- control method
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/61—Control of cameras or camera modules based on recognised objects
- H04N23/611—Control of cameras or camera modules based on recognised objects where the recognised objects include parts of the human body
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/62—Control of parameters via user interfaces
Abstract
The invention discloses a kind of control methods, for controlling imaging device.Control method includes: to handle the preview image of imaging device output to identify the face in preview image；Judge the distance between described face whether both less than or equal to imaging device field depth；And the distance between face be greater than field depth when prompt user.In addition, the invention also discloses a kind of control device and electronic devices.Control method, control device and the electronic device of embodiment of the present invention, whether the face detected when more people take a group photo by the preview image of acquisition in scene shot is in field depth, thus when anticipation is broken into picture whether whole faces can be clapped it is clear, and user is prompted when there is face beyond field depth, there are certain face image blurs when being so imaged.
Description
Technical field
The present invention relates to imaging technique, in particular to a kind of control method, control device and electronic device.
Background technique
Since the aperture of mobile phone camera is big, the depth of field is small, in group photo, certain faces, which are easy to fall in outside field depth, is led
Image blur is caused, these images are generally required to delete and be retaken, and user experience is bad.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, the present invention needs to provide one
Kind control method, control device and electronic device.
The control method of embodiment of the present invention, for controlling imaging device, the control method includes:
Identification step handles the preview image of the imaging device output to identify the face in the preview image；
Processing step, judge the distance between described face whether both less than or equal to the imaging device depth of field model
It encloses；And
Prompt step, the distance between the face prompt user when being greater than the field depth.
The control device of embodiment of the present invention, for controlling imaging device, the control device includes:
Identification module, the identification module are used to handle the preview image of the imaging device output to identify the preview
Face in image；
Processing module, the processing module for judge the distance between described face whether both less than or be equal to it is described at
As the field depth of device；And
Cue module, prompt is used when the cue module is greater than the field depth for the distance between the face
Family.
The electronic device of embodiment of the present invention includes imaging device and above-mentioned control device.
Control method, control device and the electronic device of embodiment of the present invention, pass through acquisition when more people take a group photo
Preview image whether be in field depth come the face detected in scene shot, when thus anticipation is broken into picture whether all
Face can be clear by bat, and prompts user when there is face beyond field depth, has certain faces to be imaged when being so imaged
It is fuzzy.
The advantages of additional aspect of the invention, will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention is from combining in description of the following accompanying drawings to embodiment by change
It obtains obviously and is readily appreciated that, in which:
Fig. 1 is the flow diagram of the control method of embodiment of the present invention.
Fig. 2 is the functional block diagram of the control device of embodiment of the present invention.
Fig. 3 is the functional block diagram of the control device of certain embodiments of the present invention.
Specific embodiment
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, embodiment for explaining only the invention, and should not be understood as to this hair
The limitation of bright embodiment.
Referring to Fig. 1, the control method of embodiment of the present invention, for controlling imaging device.
Control method the following steps are included:
S10, the preview image of processing imaging device output is to identify the face in preview image；
S20, judge the distance between face whether both less than or equal to imaging device field depth；And
S30, the distance between face prompt user when being greater than field depth.
Referring to Fig. 2, the control device 100 of embodiment of the present invention includes identification module 10, processing module 20 and prompt
Module 30.As an example, the control method of embodiment of the present invention can be real by the control device 100 of embodiment of the present invention
It is existing, it can be applied to electronic device 1000, electronic device 1000 may include control device 100 and imaging device 200.
Wherein, the step S10 of the control method of embodiment of the present invention can be realized that step S20 can by identification module 10
To be realized by processing module 20, and step S30 can be realized by cue module 30.In other words, identification module 10 is for handling
The preview image that imaging device 200 exports is to identify the face in preview image.Processing module 20 is for judging between face
Distance whether both less than or equal to imaging device 200 field depth.Distance of the cue module 30 between face is greater than
User is prompted when field depth.
It is understood that in shooting process, more than focal point can be at clearly as in entire field depth
Imaging be clearly as.The depth of field is in optics, for describe can be with the distance range of blur-free imaging in a space.Though
Light can only be gathered the distance of a certain fixation by right lens, then can gradually be obscured far from this point, but in a certain section of specific distance
Interior, the degree of image blur is that naked eyes can not be discovered, this section of distance is referred to as the depth of field.The depth of field is usually by object distance, imaging lens
Focal length and the f-numbers of imaging lens determined.
A parameter of the f-number f as imaging lens, is the inverse of the relative aperture of imaging lens, that is to say imaging lens
The focal length of head and the ratio of imaging lens diaphragm diameter.It is understood that f-number f is bigger, then aperture is smaller, and f is smaller, then aperture
It is bigger.Such as mobile phone of electronic device 1000 tends to the imaging lens for using large aperture (f-number is small), and one comes since its is biggish
Light-inletting quantity can shoot the image to work well in low light environment and night-environment, and two come since large aperture reasons for its use is empty
Change so that captured image visually more has a sense of hierarchy.But meanwhile for the imaging lens of large aperture, the depth of field
Range is smaller.Field depth is smaller to be will result directly in when photographed scene content is compared with horn of plenty, can understand the object of imaging
Range is smaller.For example, more people group photo scene in, positioned at front and back different location people when in blocks it is possible that a part
The fuzzy situation of clear a part.
In concrete operations, user is after opening camera function, the available preview image of imaging device 200, preview image
It may include the character image in scene shot, can also include the scene image in scene shot.By to preview image
Processing can identify the face in preview image.Wherein, face can be one or more.
When only existing single face in scene shot, imaging device 200 focuses to the personage.If shot
There are when multiple faces in scene, the distance between the face identified will be detected, whether to judge these faces
It is respectively positioned in the field depth of imaging device 200.It is understood that when detecting, should judge any two face away from
From whether field depth is less than, to obtain the distribution of whole faces.If there is the distance between any two faces to be greater than scape
When deep range, for this situation, if the face other than field depth is non-targeted object, user is after receiving prompt
It may be selected to take pictures, if the face other than field depth is still target object, user can be again after receiving prompt
Adjustment position is to facilitate shooting.
Control method, control device 100 and the electronic device 1000 of embodiment of the present invention lead to when more people take a group photo
It crosses whether the preview image obtained is in field depth come the face detected in scene shot, thus can determine whether in blocks in shooting
When whole face whether can be clapped clear, and prompt user in time when there is face beyond field depth, so can avoid
The unsatisfied photo of some users is shot so as to save shooting resource.
In some embodiments, electronic device 1000 can be the electronics that mobile phone or tablet computer etc. have camera function
Terminal.
Imaging device 200 includes Front camera and/or rearmounted camera, and imaging lens used by imaging device 200
Aperture is larger, such as f-number is the imaging lens of f1.8 or f2.0.
In some embodiments, step S10 is identified in preview image using the face recognition technology based on the colour of skin
Face.
It is appreciated that in the preview image being originally taken, due to focusing successfully not yet, face may can not be passed through
The feature of face is identified, and face has the stable colour of skin and face color character, compared with other object colors, tool
There is stronger uniqueness.Features of skin colors acquired in processing preview image is compared with the features of skin colors obtained in advance, from
And identify the face in preview image.
Features of skin colors can be in advance data training through a large number of experiments and obtain, so as to pass through analysis of preview images
In features of skin colors.In addition, judging the face in preview image in order to be more accurate.It can be corresponding by some features of skin colors in advance
Certain specific photographed scenes, such as the photographed scene that ambient light is different.
Referring to Fig. 3, in some embodiments, imaging device 200 includes laser ranging system 40, step S20 passes through
Laser ranging system 40 measures the distance between described face.
Laser focal modes are more and more widely used because of its faster focusing speed into electronic device.Laser pair
It is burnt to be mainly not easy the characteristic spread by force using infrared light centrality, it is emitted by record infrared light from laser ranging system,
Reflected by target surface, the time difference being finally received, image-signal processor come calculate target to imaging device distance.
The distance is the object distance in focus process, further according to the corresponding relationship of pre-set object distance and focusing motor position, driving
Focusing motor reaches focal position and completes focusing.
Laser ranging system 40 generally includes emitter (not shown) and reception device (not shown), emitter are used for
Emit laser, reception device is for receiving reflected laser.Usual laser ranging system 40 is arranged close to imaging lens.
User emits laser after starting camera function, through the emitter of laser ranging system 40, and records transmitting
The time of laser is recorded as at the first time.
Laser ranging system 40 emit laser encounter barrier after can reflect, usually when shooting imaging lens with
It is required between object without other barriers, it is reflected that the reception device reception of laser ranging system 40 encounters object
Laser, and the time for receiving reflection laser is recorded, it was recorded as the second time.
Due to the aerial spread speed of laser be it is certain, according at the first time, the second time and infrared light
Object can be obtained at a distance from laser ranging system 40, as object distance in spread speed.
In some embodiments, when face is multiple, emitter launches multiple laser and detects multiple people respectively
The difference of the object distance of face, each object distance that is to say the distance between face.Emitter is either one or more.Work as transmitting
When device is one, it can successively emit the object distance that laser measures multiple faces respectively.It, then can be simultaneously when emitter is multiple
Return to multiple object distance values.
In some embodiments, emitter also movable setting, in this way, can be surveyed to face in larger scope
Away from without mobile imaging device 200.
In some embodiments, step S20 is to calculate it closest to the face in preview image middle position as benchmark
He is used as the distance between face by face at a distance from benchmark.
In operation, preview image can be divided into multiple regions.And using intermediate region as base position, middle position is not
It must be focal position, can be the middle position of field depth, in this way, calculating other regions at a distance from reference area
Judge whether face falls in field depth.
In some embodiments, it can also directly be marked off on the basis of the middle position in the depth of field region when dividing region
The region of field depth.In this way, can directly judge obscure when in blocks for the face other than field depth.
In some embodiments, step S30 is by controlling imaging device 200 in preview image display reminding information to mention
Show user.
When detected face distance be greater than field depth, when that is to say that face is fallen in other than deep range, control device
100 control imaging devices 200 pass through preview image display reminding information.Prompt information can be text, picture, sound or light
One of information is a variety of.For the embodiment in above-mentioned division region, prompt information can also be prompted directly outside field depth
Region, such as indicated with red frame, to facilitate user to know prompt.
Prompt information, which has prompted user when shooting, has object beyond field depth, and has prompted beyond field depth
Object region, in this way, user after receiving prompt information, can as needed rearrange the position of object or directly
Agree to play photograph.
In some embodiments, cue module 30 can be buzzer, vibration motor or breath light.
Control device 100, the electronic device 1000 of the present invention implementation embodiment part undeployed, can join the above implementation
The corresponding part of the control method of mode, is no longer developed in details herein.
In the description of embodiments of the present invention, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", " length
Degree ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner",
The orientation or positional relationship of the instructions such as "outside", " clockwise ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, only
It is embodiments of the present invention and simplified description for ease of description, rather than the device or element of indication or suggestion meaning are necessary
It with specific orientation, is constructed and operated in a specific orientation, therefore should not be understood as the limitation to embodiments of the present invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more feature.In the description of embodiments of the present invention, the meaning of " plurality " is two
It is a or more than two, unless otherwise specifically defined.
In the description of embodiments of the present invention, it should be noted that unless otherwise clearly defined and limited, term
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected or can mutually communicate；It can be directly connected, can also lead to
It crosses intermediary to be indirectly connected, can be the connection inside two elements or the interaction relationship of two elements.For ability
For the those of ordinary skill in domain, can understand as the case may be above-mentioned term in embodiments of the present invention specifically contain
Justice.
In embodiments of the present invention unless specifically defined or limited otherwise, fisrt feature second feature it
"upper" or "lower" may include that the first and second features directly contact, may include the first and second features be not directly to connect yet
It touches but by the other characterisation contact between them.Moreover, fisrt feature second feature " on ", " top " and " on
Face " includes fisrt feature right above second feature and oblique upper, or to be merely representative of first feature horizontal height special higher than second
Sign.Fisrt feature under the second feature " below ", " below " and " below " include fisrt feature right above second feature and tiltedly on
Side, or first feature horizontal height is merely representative of less than second feature.
Above disclosure provides many different embodiments or example is used to realize embodiments of the present invention not
Same structure.In order to simplify the disclosure of embodiments of the present invention, above the component of specific examples and setting are described.When
So, they are merely examples, and is not intended to limit the present invention.In addition, embodiments of the present invention can be in different examples
Repeat reference numerals and/or reference letter in son, this repetition are for purposes of simplicity and clarity, itself not indicate to be begged for
By the relationship between various embodiments and/or setting.In addition, the various specific techniques that embodiments of the present invention provide
With the example of material, but those of ordinary skill in the art may be aware that the application of other techniques and/or other materials make
With.
In the description of this specification, reference term " embodiment ", " some embodiments ", " schematically implementation
The description of mode ", " example ", specific examples or " some examples " etc. means the tool described in conjunction with the embodiment or example
Body characteristics, structure, material or feature are contained at least one embodiment or example of the invention.In the present specification,
Schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover, the specific features of description, knot
Structure, material or feature can be combined in any suitable manner in any one or more embodiments or example.
Any process described otherwise above or method description are construed as in flow chart or herein, and expression includes
It is one or more for realizing specific logical function or process the step of executable instruction code module, segment or portion
Point, and the range of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discussed suitable
Sequence, including according to related function by it is basic simultaneously in the way of or in the opposite order, Lai Zhihang function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Expression or logic and/or step described otherwise above herein in flow charts, for example, being considered use
In the order list for the executable instruction for realizing logic function, may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (such as computer based system, including the system of processing module or other can be from instruction
Execute system, device or equipment instruction fetch and the system that executes instruction) use, or combine these instruction execution systems, device or
Equipment and use.For the purpose of this specification, " computer-readable medium " can be it is any may include, store, communicating, propagating or
Transfer program uses for instruction execution system, device or equipment or in conjunction with these instruction execution systems, device or equipment
Device.The more specific example (non-exhaustive list) of computer-readable medium include the following: there are one or more wirings
Electrical connection section (electronic device), portable computer diskette box (magnetic device), random access memory (RAM), read-only memory
(ROM), erasable edit read-only storage (EPROM or flash memory), fiber device and portable optic disk is read-only deposits
Reservoir (CDROM).In addition, computer-readable medium can even is that the paper that can print described program on it or other are suitable
Medium, because can then be edited, be interpreted or when necessary with it for example by carrying out optical scanner to paper or other media
His suitable method is handled electronically to obtain described program, is then stored in computer storage.
It should be appreciated that each section of embodiments of the present invention can be with hardware, software, firmware or their combination come real
It is existing.In the above-described embodiment, multiple steps or method can be with storages in memory and by suitable instruction execution system
The software or firmware of execution is realized.For example, if realized with hardware, in another embodiment, ability can be used
Any one of following technology or their combination well known to domain is realized: being had for realizing logic function to data-signal
The discrete logic of logic gates, the specific integrated circuit with suitable combinational logic gate circuit, programmable gate array
(PGA), field programmable gate array (FPGA) etc..
Those skilled in the art are understood that realize all or part of step that above-described embodiment method carries
It suddenly is that relevant hardware can be instructed to complete by program, the program can store in a kind of computer-readable storage medium
In matter, which when being executed, includes the steps that one or a combination set of embodiment of the method.
In addition, each functional unit in various embodiments of the present invention can integrate in a processing module, it can also
To be that each unit physically exists alone, can also be integrated in two or more units in a module.It is above-mentioned integrated
Module both can take the form of hardware realization, can also be realized in the form of software function module.The integrated module
If in the form of software function module realize and when sold or used as an independent product, also can store one calculating
In machine read/write memory medium.
Storage medium mentioned above can be read-only memory, disk or CD etc..
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (17)
1. a kind of control method, for controlling imaging device, which is characterized in that the control method includes:
Identification step handles the preview image of the imaging device output to identify the face in the preview image；
Processing step, closest to the face in preview image middle position as benchmark, to calculate other faces and the benchmark
Distance is to judge whether the face entirely falls in the field depth of the imaging device；And
Prompt step exceeds the face of field depth, the prompt when exceeding field depth there are face described in prompt user
Step by prompting frame to field depth outside face prompt.
2. control method as described in claim 1, which is characterized in that the identification step uses the recognition of face based on the colour of skin
Technology identifies the face in the preview image.
3. control method as described in claim 1, which is characterized in that the imaging device includes laser ranging system, described
Processing step measures the distance between described face by the laser ranging system.
4. control method as claimed in claim 3, which is characterized in that the face includes multiple, the laser ranging system
For emitting the multiple laser got on the multiple face respectively to measure the object distance of the multiple face.
5. control method as claimed in claim 3, which is characterized in that the face includes multiple, the laser ranging system
Laser beam emitting device including activity setting, successively gets on the multiple face for emitting laser to measure the multiple people
The object distance of face.
6. control method as described in claim 1, which is characterized in that the prompt step is existed by controlling the imaging device
The preview image display reminding information alert user.
7. control method as described in claim 1, which is characterized in that the prompt step passes through buzzing, vibration or breath light
Prompt user.
8. a kind of control device, for controlling imaging device, which is characterized in that the control device includes:
Identification module, the identification module are used to handle the preview image of the imaging device output to identify the preview image
In face；
Processing module, the processing module are used to calculate other people using the face in nearest preview image middle position as benchmark
Face judges whether the face entirely falls in the field depth of the imaging device at a distance from the benchmark；And
Cue module, the cue module are used to exceed field depth described in prompt user when exceeding field depth there are face
Face, the cue module by prompting frame to field depth outside face prompt.
9. control device as claimed in claim 8, which is characterized in that the identification module passes through the recognition of face based on the colour of skin
Technology identifies the face in the preview image.
10. control device as claimed in claim 8, which is characterized in that the imaging device includes laser ranging system, described
Processing module measures the distance between described face by the laser ranging system.
11. control device as claimed in claim 10, which is characterized in that the face includes multiple, the laser ranging dress
It sets for emitting the multiple laser got on the multiple face respectively to measure the object distance of the multiple face.
12. control device as claimed in claim 10, which is characterized in that the face includes multiple, the laser ranging dress
Set including activity setting laser beam emitting device, for emit laser successively get to it is the multiple to measure on the multiple face
The object distance of face.
13. control device as claimed in claim 8, which is characterized in that the cue module is by controlling the imaging device
In the preview image display reminding information alert user.
14. control device as claimed in claim 8, which is characterized in that the cue module passes through buzzing, vibration or breath light
Prompt user.
15. a kind of electronic device, which is characterized in that the control including imaging device and as described in claim 8-14 any one
Device.
16. electronic device as claimed in claim 15, which is characterized in that the electronic device includes mobile phone or tablet computer.
17. electronic device as claimed in claim 15, which is characterized in that the imaging device include Front camera and/or after
Set camera.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610116242.6A CN105791685B (en) | 2016-02-29 | 2016-02-29 | Control method, control device and electronic device |
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| CN201610116242.6A CN105791685B (en) | 2016-02-29 | 2016-02-29 | Control method, control device and electronic device |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106791119B (en) * | 2016-12-27 | 2020-03-27 | 努比亚技术有限公司 | Photo processing method and device and terminal |
| CN108174108A (en) * | 2018-03-08 | 2018-06-15 | 广州三星通信技术研究有限公司 | The method and apparatus and mobile terminal for effect of taking pictures are adjusted in the terminal |
| CN108259770B (en) * | 2018-03-30 | 2020-06-02 | Oppo广东移动通信有限公司 | Image processing method, image processing device, storage medium and electronic equipment |
| CN108965697A (en) * | 2018-06-28 | 2018-12-07 | 努比亚技术有限公司 | A kind of filming control method, terminal and computer readable storage medium |
| CN111832535A (en) * | 2018-08-24 | 2020-10-27 | 创新先进技术有限公司 | Face recognition method and device |
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