CN105657279A - Control method, control device and electronic device - Google Patents
Control method, control device and electronic device Download PDFInfo
- Publication number
- CN105657279A CN105657279A CN201610116211.0A CN201610116211A CN105657279A CN 105657279 A CN105657279 A CN 105657279A CN 201610116211 A CN201610116211 A CN 201610116211A CN 105657279 A CN105657279 A CN 105657279A
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- Prior art keywords
- imaging device
- distance value
- object distance
- control method
- laser ranging
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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
- H04N23/67—Focus control based on electronic image sensor signals
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
- G03B13/34—Power focusing
- G03B13/36—Autofocus systems
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Studio Devices (AREA)
Abstract
The invention discloses a control method. The control method is used for controlling an imaging device. The imaging device comprises a laser ranging device, an imaging lens and a focusing motor. The control method includes the steps of judging, wherein weather distant views are focused through the imaging device or not is judged according to the object distance value obtained by the laser ranging device; driving, wherein when the distant views are focused through the imaging device, the focusing motor is controlled to drive the imaging lens to be at the maximum position; controlling, wherein the imaging lens is controlled to focus at the maximum position. In addition, the invention further discloses a control device and an electronic device. According to the control method, the control device and the electronic device, as whether the imaging device is in the far-focus shooting state or not is judged according to the object distance value obtained in the laser focusing mode, when the imaging device is in the far-focus shooting state, the motor is directly driven to be at the farthest position for careful searching, and user experiences generated during far-focus shooting in the laser focusing mode are effectively improved.
Description
Technical field
The present invention relates to imaging technique, particularly to a kind of control method, control device and electronic installation.
Background technology
The laser usual finding range of focusing is limited, and during for remote Jiao, focus effects is undesirable, and when therefore shooting for remote Jiao, utilization rate is relatively low, experiences poor.
Summary of the invention
It is contemplated that at least solve one of technical problem of existence in prior art. For this, the present invention needs to provide a kind of control method, control device and electronic installation.
The control method of embodiment of the present invention, is used for controlling imaging device, and described imaging device includes laser ranging system, imaging lens and focusing motor, and described control method includes:
Judge step, judge whether described imaging device focuses to distant view according to the object distance value that described laser ranging system obtains;
Actuation step, controls described focusing motor and drives described imaging lens to maximum position when described distant view is focused by described imaging device; And
Rate-determining steps, controls described imaging lens and focuses at described maximum position.
The control device of embodiment of the present invention, is used for controlling imaging device, and described imaging device includes laser ranging system, imaging lens and focusing motor, and described control device includes:
Judge module, for the object distance value obtained according to described laser ranging system, described judge module judges whether described imaging device focuses to distant view;
Driving module, described driving module drives described imaging lens to maximum position for controlling described focusing motor when described distant view is focused by described imaging device; And
Controlling module, described control module is used for controlling described imaging lens and focuses at described maximum position.
The electronic installation of embodiment of the present invention, including imaging device and above-mentioned control device.
The control method of embodiment of the present invention, control device and electronic installation, judge whether imaging device is in remote burnt shooting according to the object distance value that laser focal modes obtains, and directly motor driving is carefully searched to farthest again when remote burnt shooting, effectively improve the laser focal modes Consumer's Experience when remote burnt shooting.
The advantage of the additional aspect of the present invention will part provide in the following description, and part will become apparent from the description below, or is recognized by the practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage are from conjunction with will be apparent from easy to understand the accompanying drawings below description to embodiment, wherein:
Fig. 1 is the schematic flow sheet of the control method of embodiment of the present invention.
Fig. 2 is the high-level schematic functional block diagram controlling device of embodiment of the present invention.
Fig. 3 is the view of the control method of embodiment of the present invention.
Fig. 4 is the schematic flow sheet of the control method of some embodiment of the present invention.
Fig. 5 is the high-level schematic functional block diagram controlling device of some embodiment of the present invention.
Detailed description of the invention
Being described below in detail embodiments of the present invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of same or like function from start to finish. The embodiment described below with reference to accompanying drawing is illustrative of, and is only used for explaining embodiments of the present invention, and it is not intended that restriction to embodiments of the present invention.
Refer to Fig. 1, the control method of embodiment of the present invention, it is used for controlling imaging device focusing. Wherein imaging device includes laser ranging system, imaging lens and focusing motor.
Control method comprises the following steps:
According to the object distance value that laser ranging system obtains, S10, judges whether imaging device focuses to distant view;
S20, controls focusing motor and drives imaging lens to maximum position when distant view is focused by imaging device; And
S30, controls imaging lens and focuses at maximum position.
Referring to Fig. 2, the control device 100 of embodiment of the present invention includes judge module 10, drives module 20 and control module 30. As an example, the control method of embodiment of the present invention can be realized by the control device 100 of embodiment of the present invention, can be applicable to electronic installation 1000, and electronic installation 1000 can include controlling device 100 and imaging device 200. Imaging device 200 includes laser ranging system, imaging lens and focusing motor.
Wherein, the step S10 of the control method of embodiment of the present invention can be realized by judge module 10, and step S20 can be realized by driving module 20, and step S30 can be realized by controlling module 30. In other words, it is judged that for the object distance value obtained according to laser ranging system, module 10 judges whether imaging device 200 focuses to distant view. Drive module 20 for the control focusing motor driving imaging lens when distant view is focused by imaging device 200 to maximum position. And control module 30 and focus at maximum position for controlling imaging lens.
Imaging device 200 it is appreciated that owing to imaging device 200 includes laser ranging system, hence in so that can adopt laser focal modes to focus.
Laser focal modes is focused faster because of it speed, is increasingly widely applied in electronic installation. Laser focusing mainly utilizes the characteristic that infrared light centrality not easily spreads by force, emit from laser beam emitting device by recording infrared light, reflecting through target surface, the time difference finally received, image-signal processor calculates the target distance to imaging device. This distance is the object distance in focus process, further according to the corresponding relation of the object distance pre-set Yu focusing motor position, drives focusing motor to arrive focal position and completes focusing.
But for the consideration that the global design demand of electronic installation 1000, power consumption and infrared light are disturbed by other light, effective finding range of usual laser focal modes is generally arranged within the scope of certain distance, for instance 40 centimetres.When the object beyond this scope is found range, generally being obtained and record not high maybe cannot the completing of confidence distance value and find range, in other words, measured object distance value is not accurate enough to a certain extent.
Generally include slightly searching and carefully search two processes in focus process. Slightly the process of searching is to control focusing motor according to the object distance value slightly searching scope to a relatively accurate scope, imaging lens be that is to say scope of carefully searching with the driving of bigger stride. Imaging lens will be driven to find accurate focusing position with little stride carefully searching focusing motor in scope.
Referring to Fig. 3, the typical scene of the control method of embodiment of the present invention can be use laser focal modes that distant view is focused. Explanation as explained above, when distant view is focused, is typically due to acquired confidence distance degree not high, this distance value therefore will not be adopted to focus as object distance value. In order to improve the utilization rate of laser focal modes in such a scenario, when distant view is focused by imaging device 200, then control focusing motor directly to drive imaging lens to maximum position, that is to say maximum position as carefully searching scope, and control imaging lens and carefully searched focusing at maximum position place. Focusing cannot be completed owing to the confidence value of acquired object distance value is not high thus being prevented effectively from.
In sum, the control method of embodiment of the present invention, control device 100 and electronic installation 1000, judge whether imaging device 200 is in remote burnt shooting according to the object distance value that laser focal modes obtains, and directly motor driving is carefully searched to farthest again when remote burnt shooting, effectively improve the laser focal modes Consumer's Experience when remote burnt shooting.
Refer to Fig. 4, in some embodiments, further comprise the steps of: before step S10
S00, controls laser ranging system and repeatedly launches laser to object; And
S01, processes the laser of the return that laser ranging system receives to obtain the object distance value of multiple object.
Refer to Fig. 5, in some embodiments, control device 100 and also include processing module 40. Step S00 and step S01 can be realized by processing module 40. In other words, processing module 40 repeatedly launches the laser laser to object the return processing laser ranging system reception to obtain the object distance value of this object multiple for controlling laser ranging system.
It is appreciated that owing to when distant view is focused, the confidence value of the object distance value of acquisition is not high, if therefore judging whether it is that vista shot is to a certain extent by not accurate enough only with the object distance value once obtained. Additionally, it is also possible to there is situation about being disturbed by other light and make the confidence value of object distance value that obtains not high when time range finding, therefore to judge that this object need to repeatedly be found range by the producing cause of the object distance value that this confidence value is not high.
In some embodiments, according to multiple object distance values, step S10 judges whether imaging device 200 focuses to distant view.
Further, in such embodiment, when step S10 is of substantially equal in multiple object distance values or difference is respectively less than distance threshold less than predetermined difference value and multiple object distance values of obtaining, judge that distant view is focused by imaging device 200.
It is appreciated that imaging device 200 would generally be set with distance threshold and predetermined difference value when dispatching from the factory. When the object distance value obtained is less than distance threshold it is believed that imaging device can complete focusing according to the object distance value obtained, and when actual object distance value is more than this distance threshold, then possibly cannot return object distance value, in other words, when the laser of secondary transmitting not through object reflection thus return laser light range unit.Such as when distance threshold is 40 centimetres, all cannot return object distance value beyond this scope. Accordingly, it would be desirable to the object distance value repeatedly returned is respectively less than distance threshold. And the object distance value obtained should level off to distance threshold. When the object distance value obtained differs relatively big (object distance is less) with distance threshold, focusing can be made directly. Such as, if the object distance value obtained is 20 centimetres, this object distance value differs relatively big with distance threshold, then it is believed that the confidence value of this object distance value is higher, it is possible to be made directly focusing.
While it is noted that, it should require that the difference between acquired multiple object distance values is less than predetermined difference value, to avoid single range finding to there is the possibility of error.
The part that the control device 100 of embodiment of the present invention, electronic installation 1000 are not deployed, can join the corresponding part of the control method of embodiment of above, no longer be developed in details at this.
In the description of embodiments of the present invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", " outward ", " clockwise ", orientation or the position relationship of the instruction such as " counterclockwise " are based on orientation shown in the drawings or position relationship, it is for only for ease of description embodiments of the present invention and simplifies description, rather than the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that restriction to embodiments of the present invention.
Additionally, term " first ", " second " are only for descriptive purposes, and it is not intended that indicate or imply relative importance or the implicit quantity indicating indicated technical characteristic. Thus, define " first ", the feature of " second " can express or implicitly include one or more described features. In the description of embodiments of the present invention, " multiple " are meant that two or more, unless otherwise expressly limited specifically.
In the description of embodiments of the present invention, it is necessary to explanation, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, for instance, it is possible to it is fixing connection, can also be removably connect, or connect integratedly; Can be mechanically connected, it is also possible to be electrical connection or can communication mutually; Can be joined directly together, it is also possible to be indirectly connected to by intermediary, it is possible to be connection or the interaction relationship of two elements of two element internals. For the ordinary skill in the art, it is possible to understand above-mentioned term concrete meaning in embodiments of the present invention as the case may be.
In embodiments of the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can include the first and second features and directly contact, it is also possible to include the first and second features and be not directly contact but by the other characterisation contact between them. And, fisrt feature second feature " on ", " top " and " above " include fisrt feature directly over second feature and oblique upper, or be merely representative of fisrt feature level height higher than second feature. Fisrt feature second feature " under ", " lower section " and " below " include fisrt feature directly over second feature and oblique upper, or be merely representative of fisrt feature level height less than second feature.
Above disclosure provides many different embodiments or example for realizing the different structure of embodiments of the present invention.In order to simplify disclosing of embodiments of the present invention, above parts and setting to specific examples are described. Certainly, they are only merely illustrative, and are not intended to the restriction present invention. Additionally, embodiments of the present invention can in different examples repeat reference numerals and/or reference letter, this repetition is for purposes of simplicity and clarity, the relation between itself not indicating discussed various embodiment and/or arranging. Additionally, the example of the various specific technique that provides of embodiments of the present invention and material, but those of ordinary skill in the art are it can be appreciated that the use of the application of other techniques and/or other materials.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " exemplary embodiment ", " example ", " concrete example " or " some examples " etc. means in conjunction with described embodiment or example describe are contained at least one embodiment or the example of the present invention. In this manual, the schematic representation of above-mentioned term is not necessarily referring to identical embodiment or example. And, the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiments or example.
Describe in flow chart or in this any process described otherwise above or method and be construed as, represent and include the module of code of executable instruction of one or more step for realizing specific logical function or process, fragment or part, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not press order that is shown or that discuss, including according to involved function by basic mode simultaneously or in the opposite order, performing function, this should be understood by embodiments of the invention person of ordinary skill in the field.
Represent in flow charts or in this logic described otherwise above and/or step, such as, it is considered the sequencing list of executable instruction for realizing logic function, may be embodied in any computer-readable medium, use for instruction execution system, device or equipment (such as computer based system, including the system of processing module or other can from instruction execution system, device or equipment instruction fetch the system performing instruction), or use in conjunction with these instruction execution systems, device or equipment. For the purpose of this specification, " computer-readable medium " can be any can comprise, store, communicate, propagate or transmission procedure is for instruction execution system, device or equipment or the device that uses in conjunction with these instruction execution systems, device or equipment. The example more specifically (non-exhaustive list) of computer-readable medium includes following: have the electrical connection section (electronic installation) of one or more wiring, portable computer diskette box (magnetic device), random access memory (RAM), read only memory (ROM), erasable edit read only memory (EPROM or flash memory), fiber device, and portable optic disk read only memory (CDROM). Additionally, computer-readable medium can even is that the paper that can print described program thereon or other suitable media, because can such as by paper or other media be carried out optical scanning, then carry out editing, interpreting or be processed to electronically obtain described program with other suitable methods if desired, be then stored in computer storage.
Should be appreciated that each several part of embodiments of the present invention can realize with hardware, software, firmware or their combination.In the above-described embodiment, multiple steps or method can realize with the storage software or firmware in memory and by suitable instruction execution system execution. Such as, if realized with hardware, the same in another embodiment, can realize by any one in following technology well known in the art or their combination: there is the discrete logic of logic gates for data signal realizes logic function, there is the special IC of suitable combination logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc.
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries can be by the hardware that program carrys out instruction relevant and complete, described program can be stored in a kind of computer-readable recording medium, this program upon execution, including the step one or a combination set of of embodiment of the method.
Additionally, each functional unit in various embodiments of the present invention can be integrated in a processing module, it is also possible to be that unit is individually physically present, it is also possible to two or more unit are integrated in a module. Above-mentioned integrated module both can adopt the form of hardware to realize, it would however also be possible to employ the form of software function module realizes. If described integrated module is using the form realization of software function module and as independent production marketing or use, it is also possible to be stored in a computer read/write memory medium.
Storage medium mentioned above can be read only memory, disk or CD etc.
Although above it has been shown and described that embodiments of the invention, it is understandable that, above-described embodiment is illustrative of, it is impossible to be interpreted as limitation of the present invention, and above-described embodiment can be changed, revises, replace and modification by those of ordinary skill in the art within the scope of the invention.
Claims (10)
1. a control method, is used for controlling imaging device, and described imaging device includes laser ranging system, imaging lens and focusing motor, it is characterised in that described control method includes:
Judge step, judge whether described imaging device focuses to distant view according to the object distance value that described laser ranging system obtains;
Actuation step, controls described focusing motor and drives described imaging lens to maximum position when described distant view is focused by described imaging device; And
Rate-determining steps, controls described imaging lens and focuses at described maximum position.
2. control method as claimed in claim 1, it is characterised in that described control method includes before described judgement step:
Control described laser ranging system and repeatedly launch laser to object; And
Process the described laser of the return that described laser ranging system receives to obtain the object distance value of multiple described object.
3. control method as claimed in claim 2, it is characterised in that described judge according to the plurality of object distance value, step judges whether described imaging device focuses to described distant view.
4. control method as claimed in claim 3, it is characterised in that described judgement step judges that described distant view focused by described imaging device less than predetermined difference value and the plurality of object distance value when being respectively less than distance threshold in the difference of the plurality of object distance value.
5. controlling a device, be used for controlling imaging device, described imaging device includes laser ranging system, imaging lens and focusing motor, it is characterised in that described control device includes:
Judge module, for the object distance value obtained according to described laser ranging system, described judge module judges whether described imaging device focuses to distant view;
Driving module, described driving module drives described imaging lens to maximum position for controlling described focusing motor when described distant view is focused by described imaging device; And
Controlling module, described control module is used for controlling described imaging lens and focuses at described maximum position.
6. control device as claimed in claim 5, it is characterised in that described control device includes:
Processing module, described processing module repeatedly launches the laser described laser to object the return processing the reception of described laser ranging system to obtain the object distance value of multiple described object for controlling described laser ranging system.
7. control device as claimed in claim 6, it is characterised in that according to the plurality of object distance value, described judge module is for judging whether described imaging device focuses to described distant view.
8. control device as claimed in claim 7, it is characterised in that described judge module judges that described distant view focused by described imaging device less than predetermined difference value and the plurality of object distance value when being respectively less than distance threshold for the difference in the plurality of object distance value.
9. an electronic installation, it is characterised in that include imaging device and the control device as described in any one of claim 5-8.
10. electronic installation as claimed in claim 9, it is characterised in that described electronic installation includes mobile phone or panel computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610116211.0A CN105657279A (en) | 2016-02-29 | 2016-02-29 | Control method, control device and electronic device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610116211.0A CN105657279A (en) | 2016-02-29 | 2016-02-29 | Control method, control device and electronic device |
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| CN105657279A true CN105657279A (en) | 2016-06-08 |
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| CN106054495A (en) * | 2016-07-29 | 2016-10-26 | 广东欧珀移动通信有限公司 | Focusing method, focusing device and electronic equipment |
| CN106210509A (en) * | 2016-06-28 | 2016-12-07 | 珠海市魅族科技有限公司 | A kind of focusing control method and photographing device |
| CN110708463A (en) * | 2019-10-09 | 2020-01-17 | Oppo广东移动通信有限公司 | Focusing method, focusing device, storage medium and electronic equipment |
| CN112136310A (en) * | 2019-08-30 | 2020-12-25 | 深圳市大疆创新科技有限公司 | Focusing method and assembly of imaging device, imaging device and movable object |
| CN112648973A (en) * | 2020-12-22 | 2021-04-13 | 重庆迪马工业有限责任公司 | Fire source identification and positioning device and method for fire-fighting robot |
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| CN112648973A (en) * | 2020-12-22 | 2021-04-13 | 重庆迪马工业有限责任公司 | Fire source identification and positioning device and method for fire-fighting robot |
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Application publication date: 20160608 |