CN105827941B - A kind of method and electronic equipment of auto-focusing - Google Patents
A kind of method and electronic equipment of auto-focusing Download PDFInfo
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- CN105827941B CN105827941B CN201510615902.0A CN201510615902A CN105827941B CN 105827941 B CN105827941 B CN 105827941B CN 201510615902 A CN201510615902 A CN 201510615902A CN 105827941 B CN105827941 B CN 105827941B
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Abstract
The present invention provides a kind of method of auto-focusing and electronic equipments, wherein method is applied to the front camera of electronic equipment, and method includes：Determine the source mode of photographing command；According to the source mode of the photographing command, depth of field pattern is determined；Focusing is searched in focusing area corresponding with the depth of field pattern, when focusing successfully, obtains focusing result；According to the focusing as a result, control driving mechanism driving front camera is focused.The present invention reduces the stroke of driving mechanism search and times, improve search efficiency, and improve user experience.
Description
Technical field
The present invention relates to electronic fields, more particularly, to the method and electronic equipment of a kind of auto-focusing.
Background technology
With the arrival of mobile internet era, mobile phone products are more and more universal, in usual life, mobile phone photograph work(
It can be the high function of each subscriber usage.During taking pictures, quality requirement and phase of the user to the photo shot
The requirement of machine playability is higher and higher, in addition, the clarity requirement that user shoots camera is also higher and higher.For this kind of phenomenon,
The pain spot that the preposition effect taken pictures and playability of mobile phone become wherein one big attraction and user uses.In preposition take pictures, than
If preposition take pictures be fixed-focus, can not make the effect of taking pictures when the still life to different distance is taken pictures, obtained be all it is best,
For example various self-shooting bars are used, since focal length is closer, the picture of shooting is often very fuzzy, is unable to reach good effect.
To solve the above-mentioned problems, preposition auto-focusing is taken pictures and is also slowly added in mobile phone products.
Existing preposition auto-focusing generally can be divided into active focusing and passive type focusing.Passive type focusing is exactly to pass through
The actual imaging of camera lens is to determine whether correct focusing, the foundation of judgement pass through drive motor generally by contrast formula algorithm
The image information (commonly referred to as Focus Value) of different position acquisitions is gone to be compared, judges image in which position
Set is most clearly.Active focusing is to calculate camera lenses with the distance between object using the sensor devices of various measuring and calculating distances,
To which software knows this distance, software according to the AF Table of the preposition camera lens having had built up (Automatic Focus,
Automatic focusing table) i.e. object distance corresponds to the mapping table of different motor positions and obtains the corresponding position of motor, and drive motor is walked
To most clearly focusing is completed in position.
The AF (Automatic Focus, auto-focusing) of normal mode takes pictures, AF search all can there are one search range,
This range is usually that, according to the stroke in this region, can influence the efficiency of focusing from closely to remote.For passive type focusing come
It says, passive type focusing can not judge to shoot object with the distance between camera lens.It is missed in passive type focusing in order to prevent
Clearly position can all carry out the search of gamut or be searched for since far point or near point, judge focus until searching software
Condition set up, can just stop motor search.The stroke searched in this way and time all can be longer, so as to cause search efficiency compared with
It is low, affect user experience.
Invention content
In order to reduce stroke and the time of driving mechanism search, the efficiency of search is improved, and improve user experience, the present invention
Provide a kind of method and electronic equipment of auto-focusing.
To achieve the goals above, the present invention provides a kind of methods of auto-focusing, are applied to the preposition of electronic equipment
Camera, the method includes：
Determine the source mode of photographing command；
According to the source mode of the photographing command, depth of field pattern is determined；
Focusing is searched in focusing area corresponding with the depth of field pattern, when focusing successfully, obtains focusing result；
According to the focusing as a result, control driving mechanism driving front camera is focused.
Other side according to the present invention, it is described the present invention also provides a kind of electronic equipment, including front camera
Electronic equipment further includes：
First determining module, the source mode for determining photographing command；
Second determining module determines depth of field pattern for the source mode according to the photographing command；
Processing module, when focusing successfully, is obtained for searching for focusing in focusing area corresponding with the depth of field pattern
To focusing result；
Control module, for being focused according to the focusing as a result, controlling driving mechanism driving front camera.
The beneficial effects of the invention are as follows：
The present invention determines depth of field pattern by the source mode of photographing command, and in focusing area corresponding with depth of field pattern
Interior search focusing is focused when focusing successfully as a result, finally according to focusing as a result, control driving mechanism drives preposition take the photograph
As head is focused.The present invention shortens search row due to searching for focusing in focusing area corresponding with depth of field pattern
Journey, improves the efficiency of search, and reduces focusing time, improves user experience.
Description of the drawings
Fig. 1 shows the key step flow charts of the method for auto-focusing in the embodiment of the present invention；
Fig. 2 indicates the detailed step flow chart of the method for auto-focusing in the embodiment of the present invention；
Fig. 3 indicates the comparison of the focusing area of depth of field pattern in the focusing area and the present embodiment of existing normal mode
Figure；And
Fig. 4 indicates the structure diagram of electronic equipment in the embodiment of the present invention.
Specific implementation mode
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.
Embodiment one
The present embodiment is applied to the auto-focusing of the front camera of electronic equipment.Specifically, as shown in Figure 1, being this hair
The key step flow chart of the method for auto-focusing, this method include in bright embodiment：
Step 101, the source mode of photographing command is determined.
In this step, specifically, after starting electronic equipment, image is exported into the screen of electronic equipment, at this point, electronics
Equipment waits for photographing command.When electronic equipment gets photographing command, the source mode of photographing command is determined.
Step 102, according to the source mode of photographing command, depth of field pattern is determined.
Specifically, after the completion of focusing, can be formed in the range before and after focus clearly as, this one in front and one in back away from
From range, the referred to as depth of field, also known as field depth.General camera has the field depth of oneself, that is, has the focusing area of oneself
Domain, the focusing area can be from certain distance to infinity.If when taking pictures, the field depth for having exceeded camera is so clapped
The photo gone out then can be very fuzzy.
In this step, it can determine depth of field pattern according to the source mode of photographing command, that is, determine field depth.Tool
Body, the source mode of photographing command can be screen virtual shoot button or physical button that user presses electronic equipment by hand
Touch photographing command, or user touches photographing command by bluetooth or audio interface etc..
Step 103, focusing is searched in focusing area corresponding with depth of field pattern, when focusing successfully, is obtained to close-burning
Fruit.
In this step, specifically, each depth of field pattern is designed with corresponding focusing area, in focusing, electronic equipment
It scans for focusing in focusing area corresponding with a depth of field pattern, and when focusing successfully, obtains focusing result.
Step 104, according to focusing as a result, control driving mechanism driving front camera is focused.
In this step, during setting camera before adjustment, corresponding driving mechanism is needed.Specifically, driving
Mechanism can be the drive motors such as voice coil motor, stepper motor and piezo-electric motor.
In the present embodiment, electronic equipment determines depth of field pattern by the source mode of photographing command, and with depth of field mould
Search focusing in the corresponding focusing area of formula is focused when focusing successfully as a result, finally according to focusing as a result, control is driven
Motivation structure driving front camera is focused.The present embodiment is due to the search pair in focusing area corresponding with depth of field pattern
Coke, therefore search stroke is shortened, the efficiency of search is improved, and reduce focusing time, improves user experience.
Embodiment two
As shown in Fig. 2, for the detailed step flow chart of the method for auto-focusing in the embodiment of the present invention, this method packet
It includes：
Step 201, the source mode of photographing command is determined.
In this step, the source mode of electronic equipment can be the mode being manually entered, or pass through wired biography
Defeated or wireless transmission mode.Specifically, the mode being manually entered can be electronic equipment screen virtual shoot button or
It is manually entered photographing command in entity shoot button on electronic equipment.The mode of wire transmission can be to pass through audio interface etc.
Mode for taking pictures at a distance inputs photographing command, such as wired self-shooting bar etc.；The mode of wireless transmission can be to pass through indigo plant
The mode that tooth etc. is used to take pictures at a distance inputs photographing command, such as bluetooth self-shooting bar, wireless speech triggering photographing command etc..
Step 202, if the source mode of photographing command is the mode being manually entered, it is determined that depth of field pattern is close shot mould
Formula.
Step 203, if the source mode of photographing command is the mode of wire transmission or wireless transmission, it is determined that depth of field pattern
For landscape mode.
Step 204, the correspondence of depth of field pattern and focusing area is set.
In this step, depth of field pattern includes close shot pattern and landscape mode, and electronic equipment is before search is focused, first
Need the correspondence that depth of field pattern and focusing area are set.Specifically, close shot can be set according to the use habit of user
The focusing area of pattern and landscape mode.
As shown in figure 3, for the focusing area of depth of field pattern in the focusing area and the present embodiment of existing normal mode
Comparison diagram.The focusing area of normal mode is from closely to remote.Due to being the mode being manually entered when the source mode of photographing command
When, depth of field pattern is close shot pattern, therefore the focusing area of close shot pattern can be defined as user with one between electronic equipment
A general distance, for example, the distance can be from 10cm~60cm.Further, since when the source mode of photographing command is wired
When the mode of transmission or wireless transmission, depth of field pattern is landscape mode, therefore the focusing area of landscape mode can be defined as one
Set a distance is the distance between to infinity, for example, the distance can be 70cm to infinity.It should be noted that above
The distance mentioned all is the distance assessed according to the use habit of user, which can optionally be set.
In addition, it should be noted that the correspondence of depth of field pattern and focusing area can be according to the use of user
Custom is configured when electronic equipment dispatches from the factory by producer.
Step 205, focusing is searched in focusing area corresponding with depth of field pattern.
In this step, specifically, electronic equipment searches for focusing in focusing area corresponding with depth of field pattern, if focusing
Success, then enter step 206, if focusing failure, enters step 207.
Step 206, focusing result is determined.
Specifically, when electronic equipment searches for focusing in focusing area corresponding with depth of field pattern, front camera is from most
It is moved at maximum displacement at thin tail sheep.In the process, electronic equipment automatically snaps picture, and picture is preserved to one and is used for
In the chip of Digital Signal Processing, the chip calculate each secondary picture MTF (Modulation Transfer Function,
Modulation transfer function) value, to the maximizing in the MTF curve of mtf value composition, and by algorithm, obtain MTF maximum values
The electric current is finally supplied to the driving mechanism of electronic equipment by corresponding size of current.In this step, focusing result can be
It is supplied to the electric current corresponding with MTF maximum values of driving mechanism.
Step 207, switch depth of field pattern, and search focusing in the corresponding focusing area of depth of field pattern after handover,
Focusing result is determined when focusing successfully.
In this step, specifically, for example, if the depth of field pattern that electronic equipment starts is close shot pattern, right
It after coke failure, by depth of field pattern switching to landscape mode, carries out second and focuses, until focusing successfully, obtain focusing result.If
The depth of field pattern that electronic equipment starts is landscape mode, then after focusing fails, depth of field pattern switching to close shot pattern carries out
Secondary focusing obtains focusing result until focusing successfully.
Step 208, according to focusing as a result, control driving mechanism driving front camera is focused.
It in this step, can be according to focusing as a result, control driving mechanism drives preposition camera shooting after obtaining focusing result
Head is focused so that position when front camera moves to mtf value maximum i.e. image is most clear.Specifically, preposition ought take the photograph
After moving to designated position as head, the image that can obtain present frame is stored and exports the image.
The present embodiment defines the focusing of close shot pattern and landscape mode both of which according to some use habits of user
Region, and after setting the correspondence between depth of field pattern and focusing area, in focusing corresponding with depth of field pattern area
It scans for focusing in domain.Therefore, the present embodiment reduces focusing time, improves search efficiency, to improve user's body
It tests.
Embodiment three
As shown in figure 4, for the structure diagram of electronic equipment, which includes front camera, further includes：
First determining module 301, the source mode for determining photographing command；
Second determining module 302 determines depth of field pattern for the source mode according to photographing command；
Processing module 303, when focusing successfully, is obtained for searching for focusing in focusing area corresponding with depth of field pattern
To focusing result；
Control module 304, for being focused according to focusing as a result, controlling driving mechanism driving front camera.
In the present embodiment, electronic equipment determines the source mode of photographing command by the first determining module, then passes through
The source mode for the photographing command that second determining module is determined according to the first determining module, determines depth of field pattern, then passes through processing
Module searches for focusing in focusing area corresponding with depth of field pattern, and after focusing successfully, is focused as a result, last electronics
Equipment is by control module according to focusing as a result, control driving mechanism drives front camera to focus.In the present embodiment
Electronic equipment shortens search row since processing module can search for focusing in focusing area corresponding with depth of field pattern
Journey, improves the efficiency of search, and reduces search focusing time, improves user experience.
Optionally, processing module 303 is additionally operable to, and focusing is searched in focusing area corresponding with depth of field pattern；If focusing
Success, it is determined that focusing result；If focusing failure, switches depth of field pattern, and the corresponding focusing of depth of field pattern after handover
Focusing is searched in region, and focusing result is determined when focusing successfully.
Optionally, electronic equipment further includes setup module, for the search pair in focusing area corresponding with depth of field pattern
Before coke, the correspondence of depth of field pattern and focusing area is set.
Specifically, electronics is before equipment search focusing, depth of field pattern and focusing is arranged in the setup module of electronic equipment first
The correspondence in region.Specifically, electronic equipment can set the focusing area of depth of field pattern according to the use habit of user.
Optionally, depth of field pattern includes close shot pattern and landscape mode.
Optionally, the second determining module 302 is additionally operable to, if the source mode of photographing command is the mode being manually entered,
Determine that depth of field pattern is close shot pattern；If the source mode of photographing command is the mode of wire transmission or wireless transmission, it is determined that
Depth of field pattern is landscape mode.
The focusing area of close shot pattern and remote is respectively set according to the use habit of user in electronic equipment in the present embodiment
The focusing area of scape pattern so that electronic equipment can be searched when taking pictures in focusing area corresponding with depth of field pattern
Rope is focused, and to reduce the time of search focusing, improves search efficiency, and improve user experience.
It should be noted that the electronic equipment provided in the above embodiment of the present invention is the side using above-mentioned automatic focusing
The electronic equipment that method obtains, then all embodiments of the method for above-mentioned automatic focusing are suitable for the electronic equipment, and can reach
To same or analogous advantageous effect.
This many functional component described in this description is all referred to as module, specifically to emphasize its realization side
The independence of formula.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiment, the same or similar parts between the embodiments can be referred to each other.
It should be understood by those skilled in the art that, the embodiment of the embodiment of the present invention can be provided as method, apparatus or calculate
Machine program product.Therefore, the embodiment of the present invention can be used complete hardware embodiment, complete software embodiment or combine software and
The form of the embodiment of hardware aspect.Moreover, the embodiment of the present invention can be used one or more wherein include computer can
With in the computer-usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) of program code
The form of the computer program product of implementation.
The embodiment of the present invention be with reference to according to the method for the embodiment of the present invention, terminal device (system) and computer program
The flowchart and/or the block diagram of product describes.It should be understood that flowchart and/or the block diagram can be realized by computer program instructions
In each flow and/or block and flowchart and/or the block diagram in flow and/or box combination.These can be provided
Computer program instructions are set to all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing terminals
Standby processor is to generate a machine so that is held by the processor of computer or other programmable data processing terminal equipments
Capable instruction generates for realizing in one flow of flow chart or multiple flows and/or one box of block diagram or multiple boxes
The device of specified function.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing terminal equipments
In computer-readable memory operate in a specific manner so that instruction stored in the computer readable memory generates packet
The manufacture of command device is included, which realizes in one flow of flow chart or multiple flows and/or one side of block diagram
The function of being specified in frame or multiple boxes.
These computer program instructions can be also loaded into computer or other programmable data processing terminal equipments so that
Series of operation steps are executed on computer or other programmable terminal equipments to generate computer implemented processing, thus
The instruction executed on computer or other programmable terminal equipments is provided for realizing in one flow of flow chart or multiple flows
And/or in one box of block diagram or multiple boxes specify function the step of.
Although the preferred embodiment of the embodiment of the present invention has been described, once a person skilled in the art knows bases
This creative concept, then additional changes and modifications can be made to these embodiments.So the following claims are intended to be interpreted as
Including preferred embodiment and fall into all change and modification of range of embodiment of the invention.
It should also be noted that, herein, relational terms such as first and second and the like are used merely to one
Entity or operation are distinguished with another entity or operation, without necessarily requiring or implying between these entities or operation
There are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to contain
Lid non-exclusive inclusion, so that process, method, article or terminal device including a series of elements include not only that
A little elements, but also include other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of terminal device.In the absence of more restrictions, the element limited by sentence "including a ...", and
It is not precluded in the process including the element, method, article or terminal device that there is also other identical elements.
It should be pointed out that for the ordinary person of the art, under the premise of not departing from principle of the present invention
It can also make several improvements and retouch, these improvements and modifications are also within the scope of the present invention.
Claims (8)
1. a kind of method of auto-focusing is applied to the front camera of electronic equipment, which is characterized in that the method includes：
Determine the source mode of photographing command；
According to the source mode of the photographing command, depth of field pattern is determined；
Focusing is searched in focusing area corresponding with the depth of field pattern；
If focusing successfully, it is determined that focusing result；
If focusing failure switches depth of field pattern, and search focusing in the corresponding focusing area of depth of field pattern after handover,
Focusing result is determined when focusing successfully；
According to the focusing as a result, control driving mechanism driving front camera is focused.
2. according to the method described in claim 1, it is characterized in that, being searched in focusing area corresponding with the depth of field pattern
Before focusing, the method further includes：
The correspondence of depth of field pattern and the focusing area is set.
3. according to the method described in claim 1, it is characterized in that, the depth of field pattern includes close shot pattern and landscape mode.
4. according to the method described in claim 3, it is characterized in that, the source mode according to the photographing command, determines
Depth of field pattern, specially：
If the source mode of the photographing command is the mode being manually entered, it is determined that depth of field pattern is close shot pattern；
If the source mode of the photographing command is the mode of wire transmission or wireless transmission, it is determined that depth of field pattern is distant view mould
Formula.
5. a kind of electronic equipment, including front camera, which is characterized in that the electronic equipment further includes：
First determining module, the source mode for determining photographing command；
Second determining module determines depth of field pattern for the source mode according to the photographing command；
Processing module, for searching for focusing in focusing area corresponding with the depth of field pattern；If focusing successfully, it is determined that right
Close-burning fruit；If focusing failure switches depth of field pattern, and search pair in the corresponding focusing area of depth of field pattern after handover
Coke determines focusing result when focusing successfully；
Control module, for being focused according to the focusing as a result, controlling driving mechanism driving front camera.
6. electronic equipment according to claim 5, which is characterized in that the electronic equipment further includes setup module, is used for
In focusing area corresponding with the depth of field pattern before search focusing, setting depth of field pattern is corresponding with the focusing area
Relationship.
7. electronic equipment according to claim 5, which is characterized in that the depth of field pattern includes close shot pattern and distant view mould
Formula.
8. electronic equipment according to claim 7, which is characterized in that second determining module is additionally operable to, if the bat
Source mode according to order is the mode being manually entered, it is determined that depth of field pattern is close shot pattern；If the photographing command is come
Source mode is the mode of wire transmission or wireless transmission, it is determined that depth of field pattern is landscape mode.
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