CN103246131B - Utilization can control the focusing motor that camera lens tilts and realize the method for 3 dimension multi-region auto-focusing - Google Patents
Utilization can control the focusing motor that camera lens tilts and realize the method for 3 dimension multi-region auto-focusing Download PDFInfo
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- CN103246131B CN103246131B CN201310186953.7A CN201310186953A CN103246131B CN 103246131 B CN103246131 B CN 103246131B CN 201310186953 A CN201310186953 A CN 201310186953A CN 103246131 B CN103246131 B CN 103246131B
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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
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/28—Systems for automatic generation of focusing signals
- G02B7/36—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus 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
- G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
- G03B3/10—Power-operated focusing
-
- 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
-
- 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
- H04N23/673—Focus control based on electronic image sensor signals based on contrast or high frequency components of image signals, e.g. hill climbing method
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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
- G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
- G03B2205/0007—Movement of one or more optical elements for control of motion blur
- G03B2205/0023—Movement of one or more optical elements for control of motion blur by tilting or inclining one or more optical elements with respect to the optical axis
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Optics & Photonics (AREA)
- Studio Devices (AREA)
- Automatic Focus Adjustment (AREA)
- Focusing (AREA)
Abstract
The present invention discloses a kind of utilization and can control the focusing motor that camera lens tilts and realize the method for 3 dimension multi-region auto-focusing, and the method comprises the steps: A, carries out z-axis auto-focusing; B, carry out Rx axle auto-focusing or carry out Ry axle auto-focusing; C, carry out Ry axle auto-focusing or carry out Rx axle auto-focusing. The present invention is compared with tradition auto-focusing, it provides the dimension degree of more multi-control camera motion, by the inclination angle (the 2nd, 3 dimension degree) of the position (the 1st dimension degree) Yu two orthogonal directionss that effectively control camera lens, it is achieved 3 tie up multi-region auto-focusing. When target tilt to the depth of field fails to cover whole target simultaneously, the present invention then can realize full zone focusing automatically, it is not necessary to manually realizes, and has higher reliability, faster, more accurately, without the need to training etc. a little.
Description
Technical field
The focusing motor that the present invention open a kind of lens focusing method, particularly a kind of utilization can control camera lens inclination realizes the method for 3 dimension multi-region auto-focusing.
Background technology
Impact mobile phone market along with what smart mobile phone covered the sky and the earth, mobile phone is all smart mobile phone most likely, and camera function is almost the function of general intelligence mobile phone indispensability. At present, day by day universal in smart mobile phone of 5,000,000 or more high-pixel camera heads so that the quality of mobile phone photograph is more and more close to digital camera. But, high-pixel mobile phone camera of the prior art does not but contain some optics and the mechanical part of digital camera, disappearance on this kind of hardware, the effect of taking pictures of shooting mobile phone can be allowed undoubtedly poorer than digital camera, more specifically, current shooting mobile phone at most only an autofocus motor realize nearly burnt burnt transition function far away, to the control of camera lens be at the most Dan Weidu make camera lens near or away from image sensor. And large-scale camera arrangement, such as slr camera, there is the motion that more complicated mechanism control camera lens carries out various dimensions relative to image sensor, such as, utilize camera lens translation to realize optical anti-vibration dynamic (OIS), and utilize camera lens support with favored policy to realize moving axle photography etc.
In order to make the photographic effect with the mobile phone of camera function draw close to digital camera further, many internationally recognizable mobile phones focusing motor manufacturer all starts to research and develop three axle focusing motor, and has developed the optical anti-vibration focusing motor based on camera lens translation. But these motors produce the inclination relative to image sensor due to uncontrollable camera lens, therefore cannot adjust the angle of camera lens optical axis and image sensor equally. When the focal plane of camera lens is not parallel with image sensor plane (during such as camera lens focal plane deflection, or during object that simultaneously shooting distance is different), these motors then uncontrollable camera lens realize the focusing of the clear picture in whole areas imaging. In addition, the structure of these motors is very complicated, and volume and power consumption are relatively big, also fail to promote on smart mobile phone market to come.
On the other hand, although for large-scale camera arrangement, moving lens shaft and release for many years, but the weight and volume problem for fear of camera lens, up to the present, the mechanism of optical axis does not occur automatically changing, which has limited the possibility realizing automatic 3 dimension multi-region auto-focusing.
Summary of the invention
Optical axis can not be automatically changed for the above-mentioned camera lens of the prior art mentioned, the shortcoming of automatic 3 dimension multi-region auto-focusing can not be realized, the focusing motor that the present invention provides a kind of utilization can control camera lens inclination realizes the method for 3 dimension multi-region auto-focusing, it passes through image analysis algorithm, find the optimization two dimension inclination angle of camera lens, so that captured image effect reaches optimum, solve due to the image corner fuzzy problem under camera lens focal plane and image sensing plane not parallel condition; Obtain the problem of clear focusing when solving several objects that shooting distance is different in a picture simultaneously, optimize the sharpness of whole picture.
The present invention solves the technical scheme that its technical problem adopts: a kind of utilization can control the focusing motor that camera lens tilts and realize the method for 3 dimension multi-region auto-focusing, and the method comprises the steps: A, carries out z-axis auto-focusing; B, carry out Rx axle auto-focusing or carry out Ry axle auto-focusing; C, carry out Ry axle auto-focusing or carry out Rx axle auto-focusing.
The technical scheme that the present invention solves the employing of its technical problem further comprises:
During described z-axis auto-focusing, concrete steps are as follows:
A-1, the stroke changing camera lens are to stroke 1;
A-2 until image stabilization position on image sensor, by waiting a regular time, or observes image and determines whether image is stablized;
A-3, picked-up image;
The sharp keen degree of the focusing district that A-4, calculating x-axis and y-axis are had a common boundary or whole district's focusing district, territory image;
A-5, change stroke are to next stroke 2, and repeating step A-2 to A-4, until stroke number is more than or equal to combined stroke number;
A-6, find out the stroke having maximum sharpness, it is determined that the trip is best stroke;
A-7, change camera lens stroke are best stroke.
During described Rx axle auto-focusing, concrete steps are as follows:
B-1, the pitch angle changed on camera lens Rx direction;
B-2 until image stabilization position on image sensor, by waiting a regular time, or observes image and determines whether image is stablized;
B-3, picked-up image;
The sharp keen degree of the focusing district image in B-4, the focusing district calculated in positive y-axis and negative y-axis;
B-5, the pitch angle changed on Rx direction are to next pitch angle, and repeating step B-2 to B-4, until stroke number is more than or equal to total Rx direction tilt angle number;
B-6, find out the Rx direction having maximum sharpness on pitch angle, it is determined that this pitch angle is the pitch angle on best Rx direction;
B-7, the pitch angle changed on camera lens Rx direction are the pitch angle on best Rx direction.
During described Ry axle auto-focusing, concrete steps are as follows:
C-1, the pitch angle changed on camera lens Ry direction;
C-2 until image stabilization position on image sensor, by waiting a regular time, or observes image and determines whether image is stablized;
C-3, picked-up image;
The sharp keen degree of the focusing district image in C-4, the focusing district calculated in positive x-axis and negative x-axis;
C-5, the pitch angle changed on Ry direction are to next pitch angle, and repeating step C-2 to C-4, until stroke number is more than or equal to total Ry direction tilt angle number;
C-6, find out the Ry direction having maximum sharpness on pitch angle, it is determined that this pitch angle is the pitch angle on best Ry direction;
C-7, the pitch angle changed on camera lens Ry direction are the pitch angle on best Ry direction.
The invention has the beneficial effects as follows: the present invention is compared with tradition auto-focusing, provide the dimension degree of more multi-control camera motion, by the inclination angle (the 2nd, 3 dimension degree) of the position (the 1st dimension degree) Yu two orthogonal directionss that effectively control camera lens, it is achieved 3 dimension multi-region auto-focusing.
In the past when target tilt to the depth of field fails to cover whole target simultaneously, can only manually carry out moving axle with family, realize full zone focusing. The present invention then can realize full zone focusing automatically, it is not necessary to manually realizes, and has higher reliability, faster, more accurately, without the need to training etc. a little.
In addition, the present invention can control the focusing motor that camera lens tilts, it is also possible to realize optical anti-vibration, the function that the high-end large-scale camera arrangements such as optical axis verticality compensation just possess.
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Accompanying drawing explanation
Fig. 1 is the cam stereo structural representation adopted in the present invention.
Fig. 2 is the camera cross-sectional view adopted in the present invention.
Fig. 3 is that the present invention adjusts front light path schematic diagram.
Fig. 4 is that the present invention adjusts rear light path schematic diagram.
Fig. 5 is focusing area partition structure schematic diagram of the present invention.
Fig. 6 is schema of the present invention.
Fig. 7 is z-axis auto-focusing schema in the present invention.
Fig. 8 is Rx axle auto-focusing schema in the present invention.
Fig. 9 is Ry axle auto-focusing schema in the present invention.
In figure, 101-camera lens, 102-motor, 103-image sensor, 201-target, the mono-convex lens camera lens of 202-, 204-imaging, the mono-convex lens lens direction of 212-, the new imaging of 214-, the focusing district that 301-x axle and y-axis are had a common boundary, focusing district in the positive x-axis of 302-, the focusing district in the positive y-axis of 303-, the focusing district in the negative x-axis of 304-, focusing district in the negative y-axis of 305-, focusing district, territory of the 306-whole district.
Embodiment
The present embodiment is the preferred embodiment for the present invention, and other its principles all are identical with the present embodiment or approximate with basic structure, all within protection domain of the present invention.
Please refer to accompanying drawing 1 and accompanying drawing 2, the motor adopted in the present invention is the focusing motor that can control camera lens inclination, in the present invention adopt camera mainly comprise camera lens 101, camera lens 101 can be controlled tilt focusing motor 102 and image sensor 103, camera lens 101 is under the control of motor 102, degree of freedom is at least three-dimensional, and comprising Z axle translation direction, Rx direction of principal axis rotates and Ry direction of principal axis rotates, and described camera lens 101 can be made up of one or more eyeglass.
The camera structure of the employing in the present invention specifically utilizes and of the prior art controls focusing motor (the such as patent No. is the United States Patent (USP) of US2009/0237517 and the patent No. is the Chinese patent of 200810090504.1) that camera lens tilts or other actuating devices realize 3 dimension multi-region focus function. Owing to the moving element of described motor is comparatively light and handy, the size of actuation element and power consumption can allow general small sized flow device (such as mobile phone) accept.
The present invention is mainly a kind of utilization to control the focusing motor that camera lens tilts and realize the method for 3 dimension multi-region auto-focusing, incorporated by reference to referring to accompanying drawing 3 and accompanying drawing 4, in accompanying drawing 3, when target 201 tilts, when single convex lens camera lens 202 does not tilt, imaging 204 may exceed the depth of field because of image and cannot zone focusing entirely. In the present embodiment, described target can be made up of one or more object.
Single convex lens camera lens 202 in present method is equal to the camera lens 101 in single-lens system. Referring to accompanying drawing 4, by motor 102, adjustment camera lens 202 pitch angle, according to husky nurse law (Scheimpflugprinciple, see GBPatentNo.1139), reaches new single convex lens lens direction 212, and new imaging 214, reaches full zone focusing.
Incorporated by reference to referring to accompanying drawing 5, in the present embodiment, adopting multi-region focusing to realize in full zone focusing process, in the present embodiment, multi-region focusing comprises five districts, it is respectively positive x-axis Shang 304 district, negative x-axis Shang 302 district, positive y-axis Shang 303 district, negative y-axis Shang 305 district, and in 301st district that x-axis and y-axis are had a common boundary, or 306 whole district territories (being namely whole image). The present invention in the specific implementation, is not limited to five districts, it is possible to be three districts or more, and the position of the position in district, x-axis and y-axis and direction are also without hard and fast rule.
Please refer to accompanying drawing 6, the method of 3 dimension five district's auto-focusing in the present invention, concrete steps are as follows: first, for 301st district or 306 district's images, carry out z-axis auto-focusing, this is the auto-focusing of approximate tradition 1 dimension, then, for 303 Qu Huo 305 district images, carry out Rx axle auto-focusing, finally, for 302 or 304 district's images, carry out Ry axle auto-focusing.
Incorporated by reference to referring to accompanying drawing 7, in the present embodiment, the method for z-axis auto-focusing is realized by image analysis algorithm, specific as follows:
One, the stroke changing camera lens is to stroke 1. Stroke in the present embodiment is defined as the relative position of camera lens in z-axis, and the reference position of stroke can be image sensor 103 or the position of camera lens when not having motor not to be energized.
Two, until the image stabilization position on image sensor 103, can by waiting a regular time, or observation image determines whether image is stablized, due to when camera lens 202 position is not fixed, the sharpness of image cannot settle out, usually, camera lens 202 is when moving to rapidly certain position, due to factors such as inertia, camera lens 202 also can swing for some time in front and back near this position, image now also cannot be focused clear, it is thus desirable to wait for a period of time, until image is clear, the concrete waiting time is relevant with multiple parameters and the lens performance of whole system, it is approximately tens to about up to a hundred milliseconds, in a word, more short more good.
Three, image is absorbed.
Four, the sharp keen degree (sh) of 301st district or 306 district's images is calculated.
Five, changing stroke to next stroke 2, in the present embodiment, a stroke of common camera lens 202 is generally tens microns, and conventional selects 30 ~ 80 microns, repeating step two to four, until stroke number is more than or equal to combined stroke number (nh).
Six, the stroke having maximum sharpness (sh) is found out, it is determined that the trip is best stroke.
Seven, changing stroke is best stroke.
Incorporated by reference to referring to accompanying drawing 8, the method for the Rx axle auto-focusing in the present embodiment, the method for Rx axle auto-focusing is close with the method for z-axis auto-focusing, and concrete steps are as follows:
One, the pitch angle on camera lens Rx direction is changed.
Two, wait that a regular time is until image stabilization.
Three, image is absorbed.
Four, the sharp keen degree (ui) of 303rd district and 305 district's images is calculated.
Five, the pitch angle on Rx direction is changed to next pitch angle, in the present embodiment, a pitch angle of common camera lens 202 can select 3 ~ 10 ��, repeating step two to four, until the pitch angle number on Rx direction is more than or equal to total Rx direction tilt angle number (ni).
Six, finding out the pitch angle on the Rx direction having maximum sharpness (ui), this pitch angle is the pitch angle on best Rx direction.
Seven, the stroke changing camera lens is the pitch angle on best Rx direction.
Incorporated by reference to referring to accompanying drawing 9, closely, concrete steps are as follows for the method for the Ry axle auto-focusing in the present embodiment, the method for Ry axle auto-focusing and the method for Rx axle auto-focusing:
One, the pitch angle on Ry direction is changed.
Two, wait that a regular time is until image stabilization.
Three, image is absorbed.
Four, 302nd district and (vj) of 304 district's images is calculated.
Five, the pitch angle on Ry direction is changed to next pitch angle, in the present embodiment, a pitch angle of common camera lens 202 can select 3 ~ 10 ��, repeating step two to four, until the pitch angle number on Ry direction is more than or equal to the pitch angle number (nj) on total Ry direction.
Six, finding out the pitch angle on the Ry direction having maximum sharpness (vj), this pitch angle is the pitch angle on best Ry direction.
Seven, changing stroke is the pitch angle on best Ry direction.
Above-mentioned flow process is a specific embodiment of the present invention, but when specifically implementing, detailed process and step can be changed, such as the precedence of Rx axle auto-focusing and Ry axle auto-focusing.
The present invention is compared with tradition auto-focusing, it provides the dimension degree of more multi-control camera motion, by the inclination angle (the 2nd, 3 dimension degree) of the position (the 1st dimension degree) Yu two orthogonal directionss that effectively control camera lens, it is achieved 3 tie up multi-region auto-focusing.
In the past when target tilt to the depth of field fails to cover whole target simultaneously, can only manually carry out moving axle with family, realize full zone focusing. The present invention then can realize full zone focusing automatically, it is not necessary to manually realizes, have higher reliability, faster, more accurately, without the need to advantages such as training.
In addition, the present invention can control the focusing motor that camera lens tilts, it is also possible to realize optical anti-vibration, the function that the high-end large-scale camera arrangements such as optical axis verticality compensation just possess.
Claims (1)
1. utilization can control the focusing motor that camera lens tilts and realizes the methods of 3 dimension multi-region auto-focusing, it is characterized in that: described method comprises the steps:
A, carrying out z-axis auto-focusing, during described z-axis auto-focusing, concrete steps are as follows:
A-1, the stroke changing camera lens are to stroke 1;
A-2 until image stabilization position on image sensor, by waiting a regular time, or observes image and determines whether image is stablized;
A-3, picked-up image;
The sharp keen degree of the focusing district that A-4, calculating x-axis and y-axis are had a common boundary or whole district's focusing district, territory image;
A-5, change stroke are to next stroke 2, and repeating step A-2 to A-4, until stroke number is more than or equal to combined stroke number;
A-6, find out the stroke having maximum sharpness, it is determined that the trip is best stroke;
A-7, change camera lens stroke are best stroke;
B, carrying out Rx axle auto-focusing or carry out Ry axle auto-focusing, concrete steps are as follows:
B-1, the pitch angle changed on camera lens Rx direction;
B-2 until image stabilization position on image sensor, by waiting a regular time, or observes image and determines whether image is stablized;
B-3, picked-up image;
The sharp keen degree of the focusing district image in B-4, the focusing district calculated in positive y-axis and negative y-axis;
B-5, the pitch angle changed on Rx direction are to next pitch angle, and repeating step B-2 to B-4, until stroke number is more than or equal to total Rx direction tilt angle number;
B-6, find out the Rx direction having maximum sharpness on pitch angle, it is determined that this pitch angle is the pitch angle on best Rx direction;
B-7, the pitch angle changed on camera lens Rx direction are the pitch angle on best Rx direction;
C, carrying out Ry axle auto-focusing or carry out Rx axle auto-focusing, concrete steps are as follows:
C-1, the pitch angle changed on camera lens Ry direction;
C-2 until image stabilization position on image sensor, by waiting a regular time, or observes image and determines whether image is stablized;
C-3, picked-up image;
The sharp keen degree of the focusing district image in C-4, the focusing district calculated in positive x-axis and negative x-axis;
C-5, the pitch angle changed on Ry direction are to next pitch angle, and repeating step C-2 to C-4, until stroke number is more than or equal to total Ry direction tilt angle number;
C-6, find out the Ry direction having maximum sharpness on pitch angle, it is determined that this pitch angle is the pitch angle on best Ry direction;
C-7, the pitch angle changed on camera lens Ry direction are the pitch angle on best Ry direction.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310186953.7A CN103246131B (en) | 2013-05-20 | 2013-05-20 | Utilization can control the focusing motor that camera lens tilts and realize the method for 3 dimension multi-region auto-focusing |
| PCT/CN2014/073328 WO2014187187A1 (en) | 2013-05-20 | 2014-03-12 | Method for realizing tilt-shift photography and three-dimensional multi-area auto-focus via touch screen operation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310186953.7A CN103246131B (en) | 2013-05-20 | 2013-05-20 | Utilization can control the focusing motor that camera lens tilts and realize the method for 3 dimension multi-region auto-focusing |
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| CN103246131A CN103246131A (en) | 2013-08-14 |
| CN103246131B true CN103246131B (en) | 2016-06-01 |
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| WO (1) | WO2014187187A1 (en) |
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| CN103246131B (en) * | 2013-05-20 | 2016-06-01 | 爱佩仪光电技术（深圳）有限公司 | Utilization can control the focusing motor that camera lens tilts and realize the method for 3 dimension multi-region auto-focusing |
| CN103813104A (en) * | 2014-03-12 | 2014-05-21 | 爱佩仪光电技术（深圳）有限公司 | Method for realizing shift photography and three-dimensional multi-region automatic focusing through touch screen operation |
| WO2015180148A1 (en) * | 2014-05-30 | 2015-12-03 | 爱佩仪光电技术（深圳）有限公司 | Debugging and application method for tilt compensation control of lens of auto-focus camera module |
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| CN104853105B (en) * | 2015-06-15 | 2019-04-23 | 爱佩仪光电技术有限公司 | The fast automatic focusing method of three-dimensional based on the inclined photographic device of controllable camera lens |
| WO2016201592A1 (en) * | 2015-06-15 | 2016-12-22 | 爱佩仪光电技术有限公司 | Three-dimensional rapid automatic focusing method based on photographing device capable of controlling the inclination of lens |
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| CN107277363A (en) * | 2017-07-21 | 2017-10-20 | 深圳市泰衡诺科技有限公司上海分公司 | Image processing method, image processing apparatus and electronic equipment |
| CN109510938A (en) * | 2017-09-15 | 2019-03-22 | 致伸科技股份有限公司 | The video capturing device and electronic device of image focusing method and application this method |
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| CN114236745B (en) * | 2021-07-13 | 2024-04-05 | 广东弘景光电科技股份有限公司 | Lens core adjusting method based on triaxial movement |
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| EP3644598A1 (en) * | 2018-10-22 | 2020-04-29 | Canon Kabushiki Kaisha | Control apparatus, imaging apparatus, control method, and program |
| KR102510704B1 (en) * | 2018-10-30 | 2023-03-16 | 캐논 가부시끼가이샤 | Imaging apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103246131A (en) | 2013-08-14 |
| WO2014187187A1 (en) | 2014-11-27 |
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