CN105657274A - Control method, control device and electronic device - Google Patents
Control method, control device and electronic device Download PDFInfo
- Publication number
- CN105657274A CN105657274A CN201610114383.4A CN201610114383A CN105657274A CN 105657274 A CN105657274 A CN 105657274A CN 201610114383 A CN201610114383 A CN 201610114383A CN 105657274 A CN105657274 A CN 105657274A
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- Prior art keywords
- imaging device
- control method
- image
- imageing sensor
- focusing
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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
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- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Studio Devices (AREA)
Abstract
The invention discloses a control method. The control method is used for controlling an imaging device to focus. The imaging device comprises a focusing lens, an image sensor and a display. The control method includes the steps that a smallest picture dimension is determined according to the focusing range of the focusing lens, the size of the image sensor and object distance information; an image output by the image sensor in the focusing process of the imaging device is processed to cut out a part corresponding to the smallest picture dimension to serve as a previewing image; the display is driven to display the previewing image. The invention further discloses a control device and an electronic device. According to the control method, the control device and the electronic device, the smallest picture dimension is determined according to the relative parameters of the focusing lens, the image output by the image sensor is processed, the image of the part corresponding to the smallest picture dimension is invariably displayed through the display to serve as the previewing image accordingly, and visual experiences of a user are 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
In focus process, owing to promoting camera lens to move, causing that the angle of visual field changes, thus causing that the scene of preview screen changes, preview screen stretches back and forth, 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 focusing, and described imaging device includes focus lens, imageing sensor and display, and described control method includes:
Focusing range according to described focus lens, the size of described imageing sensor and object distance information determine minimum picture;
Process image that described imageing sensor exports in described imaging device focus process with cut out described minimum picture corresponding partly as preview image; And
Described display is driven to show described preview image.
The control device of embodiment of the present invention, is used for controlling imaging device focusing, and described imaging device includes focus lens, imageing sensor and display, and described control device includes:
Determine module, described determine that module determines minimum picture for the focusing range according to described focus lens, the size of described imageing sensor and object distance information;
Processing module, described processing module for process image that described imageing sensor exports in described imaging device focus process with cut out described minimum picture corresponding partly as preview image; And
Driving module, described driving module is used for driving described display to show described preview image.
The electronic installation of embodiment of the present invention, including imaging device and control device as above.
The control method of embodiment of the present invention, control device and electronic installation, relevant parameter according to imaging lens determines minimum picture, and processed so that display is showing that the image of minimum picture corresponding part is as preview image, improves user's visual experience all the time by the image that imageing sensor is exported.
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.
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 from start to finish or has the element of same or like function.
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 focus lens and display.
Control method comprises the following steps:
S10: determine minimum picture according to the focusing range of focus lens, the size of imageing sensor and object distance information.
S20: process the image that exports in imaging device focus process of imageing sensor with cut out minimum picture corresponding partly as preview image; And
S30: drive display display preview image.
Referring to Fig. 2, the control device 100 of embodiment of the present invention includes determining module 10, processing module 20 and driving 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, and can be applicable to electronic installation 1000, and electronic installation 1000 can include controlling device 100 and imaging device 200.
Wherein, the step S10 of the control method of embodiment of the present invention can by determining that module 10 realizes, and step S20 can be realized by processing module 20, and step S30 can by driving module 30 to realize. In other words, it is determined that module 10 is for determining minimum picture according to the focusing range of focus lens, the size of imageing sensor and object distance information. The image that processing module 20 exports in imaging device 200 focus process for processing imageing sensor with cut out minimum picture corresponding partly as preview image. And drive module 30 for driving display display preview image.
Focusing range that is to say that imaging device can the scope of blur-free imaging. In focus process, owing to promoting camera lens, the change of the angle of visual field can be caused, thus causing that the scene of preview screen changes. The control method of embodiment of the present invention is determined by minimum picture, then using minimum picture, the image of imageing sensor output is cut out appropriate section and is supplied to user as preview image and carries out preview.
Referring to Fig. 3, in focus process, when object distance one timing, focus lens obtains suitable image distance by movement and completes focusing. Movement along with camera lens, the angle of visual field will change, can determining according to the distance of image sensor size and focus lens and imageing sensor of its size, when object distance one timing, the distance between the size of the angle of visual field and focus lens and imageing sensor is inversely proportional to. As shown, in a certain focusing scene, the extreme position of focus lens respectively P1 and P2, and the corresponding maximum field of view angle �� 1 and minimum angle of visual field �� 2 of difference, generally when imaging, according to the size of imageing sensor and the angle of visual field, imageing sensor with full-scale output image, therefore can know that present image sensor can the scene domain of imaging.Obviously, when other positions between P1 and P2 of camera lens, imageing sensor will between scene domain S1 to S2 with the scene changes of the preview image of full-scale output. The imaging size A1 of the imageing sensor of scene domain S1 correspondence maximum field of view angle �� 1 is minimum picture. In other words, when scene domain changes between S1 to S2, the picture of corresponding imageing sensor imaging also will change between full-scale and minimum picture A1. Therefore, carry out cutting with the minimum picture A1 image that imageing sensor was exported in focusing and display all the time, then the picture that user's preview is arrived will be constant all the time.
In sum, the control method of embodiment of the present invention, control device 100 and electronic installation 1000, relevant parameter according to imaging lens determines minimum picture, and processed so that display is showing that the image of minimum picture corresponding part is as preview image, improves user's visual experience all the time by the image that imageing sensor is exported.
In some embodiments, electronic installation 1000 can be the electric terminal that mobile phone or panel computer etc. have camera function. And imaging device 200 includes preposition and/or rearmounted camera.
It is appreciated that electronic installation 1000 includes but not limited to the example of present embodiment.
In some embodiments, control method includes:
Controlling imaging device 200 adopts contrast formula focusing mode, phase place focusing mode or laser focusing mode to focus.
Being appreciated that and no matter adopt which kind of focusing mode, the movement all requiring over focus lens realizes focusing, therefore, all can produce owing to the angle of visual field changes the change of the scene domain caused in focus process.
In some embodiments, imaging device 200 includes laser ranging system, and laser ranging system is used for obtaining object distance information.
Accordingly for phase place focal modes, then the detecting phase pixel that can pass through imageing sensor obtains left and right pixel waveforms, and the phase contrast according to left and right pixel waveforms obtains object distance information.
Referring to Fig. 3, in some embodiments, minimum picture is determined by following conditional:
H=2*f1*tan (��/2);
Wherein, W is described minimum picture, and f1 is the minimum imaging object distance of described imaging lens, and �� is current field angle.
As shown, when focus lens is positioned at P1 position, the distance of focus lens and imageing sensor is f1, and corresponding angle of visual field �� 1=2arctan (H/f1), wherein H is the half of image sensor diagonal length. Correspondingly, when focus lens is positioned at P2 position, the distance of zoom lens and imageing sensor is f2, corresponding angle of visual field �� 2=2arctan (H/f2).
It is hereby achieved that H '=F1*tan (�� 1/2), h '=F2*tan (�� 2/2).
Angle of visual field ��=the 2arctan of minimum picture A1 (h '/F1).
Cornerwise half h=2*f1*tan (��/2) of minimum picture A1.
When the preview image that imageing sensor is exported carries out cutting, the catercorner length of minimum picture and the size of imageing sensor according to obtaining carry out cutting. The image cut out so is shown in former ratio.
Embodiment of the present invention control device 100 and not deployed other parts of electronic installation 1000, the corresponding part of the control method of embodiment of above can be joined, be no longer 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 (11)
1. a control method, is used for controlling imaging device focusing, it is characterised in that described imaging device includes focus lens, imageing sensor and display, and described control method includes:
Focusing range according to described focus lens, the size of described imageing sensor and object distance information determine minimum picture;
Process image that described imageing sensor exports in described imaging device focus process with cut out described minimum picture corresponding partly as preview image; And
Described display is driven to show described preview image.
2. control method as claimed in claim 1, it is characterised in that described control method includes:
Controlling described imaging device adopts contrast formula focusing mode, phase place focusing mode or laser focusing mode to focus.
3. control method as claimed in claim 1, it is characterised in that described minimum picture is determined by following conditional:
H=2*f1*tan (��/2);
Wherein, h is described minimum picture, and f1 is the minimum imaging object distance of described imaging lens, and �� is current field angle.
4. control method as claimed in claim 1, it is characterised in that described imaging device includes laser ranging system, and described laser ranging system is used for obtaining described object distance information.
5. control a device, be used for controlling imaging device focusing, it is characterised in that described imaging device includes focus lens, imageing sensor and display, and described control device includes:
Determine module, described determine that module determines minimum picture for the focusing range according to described focus lens, the size of described imageing sensor and object distance information;
Processing module, described processing module for process image that described imageing sensor exports in described imaging device focus process with cut out described minimum picture corresponding partly as preview image; And
Driving module, described driving module is used for driving described display to show described preview image.
6. control device as claimed in claim 5, it is characterised in that described control device is used for controlling described imaging device and adopts contrast formula focusing mode, phase place focusing mode or laser focusing mode to focus.
7. control device as claimed in claim 5, it is characterised in that described determine that module is for determining described minimum picture by following conditional:
H=2*f1*tan (��/2);
Wherein, h is described minimum picture, and f1 is the minimum image-forming range of described imaging lens, and �� is the angle of visual field that minimum picture is corresponding.
8. controlling device as claimed in claim 5, it is characterised in that described imaging device includes laser ranging system, described laser ranging system is used for obtaining described object distance information.
9. an electronic installation, it is characterised in that include described imaging device and the control device as described in claim 5-8 any one.
10. electronic installation as claimed in claim 9, it is characterised in that described electronic installation includes mobile phone or panel computer.
11. electronic installation as claimed in claim 9, it is characterised in that described imaging device includes Front camera and/or rearmounted camera.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610114383.4A CN105657274B (en) | 2016-02-29 | 2016-02-29 | Control method, control device and electronic device |
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| CN201610114383.4A CN105657274B (en) | 2016-02-29 | 2016-02-29 | Control method, control device and electronic device |
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| CN105657274A true CN105657274A (en) | 2016-06-08 |
| CN105657274B CN105657274B (en) | 2019-05-10 |
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| CN109417598A (en) * | 2016-06-20 | 2019-03-01 | 麦克赛尔株式会社 | Photographic device, display device and camera shooting display system |
| CN109565543A (en) * | 2016-09-01 | 2019-04-02 | 松下知识产权经营株式会社 | Photographic device |
| CN110086987A (en) * | 2019-04-22 | 2019-08-02 | 惠州Tcl移动通信有限公司 | A kind of camera visual angle method of cutting out, device and storage medium |
| CN113840083A (en) * | 2021-08-19 | 2021-12-24 | 珠海视熙科技有限公司 | Camera control method, device and storage medium |
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