CN106773514A - A kind of parallel adjusting method of camera module optical axis and system - Google Patents

A kind of parallel adjusting method of camera module optical axis and system Download PDF

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Publication number
CN106773514A
CN106773514A CN201611192655.9A CN201611192655A CN106773514A CN 106773514 A CN106773514 A CN 106773514A CN 201611192655 A CN201611192655 A CN 201611192655A CN 106773514 A CN106773514 A CN 106773514A
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camera module
photosurface
calibration
angle
plane
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CN106773514B (en
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林挺
李建华
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Truly Opto Electronics Ltd
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Truly Opto Electronics Ltd
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    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B43/00Testing correct operation of photographic apparatus or parts thereof

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Abstract

The invention discloses a kind of parallel adjusting method of camera module optical axis and system, method includes:Same width calibration maps are shot with least two camera modules to be regulated, the calibration maps image that each camera module shoots is obtained, calibration maps are set towards at least two camera modules, and the photosurface of the camera module is vertical with its optical axis;According to the calibration maps image for obtaining, the photosurface of each camera module and the angle of plane where calibration maps are calculated respectively;Fix the first camera module, the corresponding angle of corresponding angle and another camera module according to the first camera module, obtain the photosurface of another camera module and the angle of the first camera module photosurface, angle according to both photosurfaces adjusts another camera module, parallel to reach both photosurfaces.Compared with the parallel method of optical axis between the existing regulation camera module based on camera module profile, the parallel adjusting method of camera module optical axis of the present invention and system, the optical axis that can more precisely adjust each camera module are parallel.

Description

A kind of parallel adjusting method of camera module optical axis and system
Technical field
The present invention relates to optical technical field, more particularly to a kind of parallel adjusting method of camera module optical axis and system.
Background technology
Using the mobile terminal device of double camera modules, it will be the development trend of future market.But for double shooting moulds Group is, it is necessary to make the optical axis of two camera modules parallel, the image that so shooting is obtained just can guarantee that and reach good imaging effect.
In the prior art, be positioned by camera module profile its optical axis and regulation make the optical axis between module parallel, show Right this method degree of regulation is not high, causes imaging effect poor.
The content of the invention
It is an object of the invention to provide a kind of parallel adjusting method of camera module optical axis and system, can more precisely adjust The optical axis for saving each camera module is parallel.
To achieve the above object, the present invention provides following technical scheme:
A kind of parallel adjusting method of camera module optical axis, including:
Same width calibration maps are shot with least two camera modules to be regulated, the mark that each camera module shoots is obtained Determine figure image, camera module setting, the photosurface of the camera module and its optical axis described in the calibration maps direction at least two Vertically;
According to the calibration maps image for obtaining, the photosurface that each camera module is calculated respectively is flat with where the calibration maps The angle in face;
The first camera module is fixed, according to the corresponding angle of first camera module, and another camera module Corresponding angle, obtain the photosurface of another camera module and the angle of the first camera module photosurface, root It is parallel to reach both photosurfaces according to described another camera module of angle regulation of both photosurfaces.
Alternatively, it is provided with calibration point in the calibration maps;
According to the calibration maps image for obtaining, the photosurface of the camera module and the folder of plane where the calibration maps are calculated Angle includes:
As origin, plane where with photosurface sets up three as xOy planes at any point with the camera module photosurface Rectangular coordinate system is tieed up, coordinate of the calibration point in the calibration maps in the three-dimensional cartesian coordinate system asks for the mark Plane equation of the plane in the three-dimensional cartesian coordinate system where fixed figure;
The angle of the calibration maps place plane and the camera module photosurface is calculated according to the plane equation.
Alternatively, described any point with the camera module photosurface is as origin, and plane is as xOy where with photosurface Plane sets up three-dimensional cartesian coordinate system, coordinate of the calibration point in the calibration maps in the three-dimensional cartesian coordinate system, Asking for plane equation of the plane in the three-dimensional cartesian coordinate system where the calibration maps includes:
As origin, plane where with photosurface sets up three-dimensional straight as xOy planes at center with the camera module photosurface Angular coordinate system M, at least sets three calibration points in the calibration maps, and the i-th calibration point is determined in the calibration maps image for shooting Picpointed coordinate be (xi', yi', 0);
The first calibration point is measured in the calibration maps to the camera module group lens surface apart from H, according to being calculated as below Formula calculates the coordinate (x for obtaining the first calibration point in coordinate system M1, y1, z1), specially:
Wherein, (Cx, Cy, 0) and the coordinate at the camera module photosurface center is represented, S represents that the picture point of the first calibration point is arrived The distance on the camera module group lens surface to be measured, meetsF represents the focal length of the camera module group lens;
X coordinate value and y-coordinate value of i-th calibration point in coordinate system M are calculated according to the formula that is calculated as below, specially:
Wherein, (xi, yi, zi) represent coordinate of i-th calibration point in coordinate system M, ziIt is unknown;
Built with the relation at angle according to arbitrary two other calibration point side triangle with first calibration point Vertical equation group, solves the z coordinate value of two other calibration point in coordinate system M;
According to first calibration point and at least coordinate of two other calibration point in coordinate system M, the mark is asked for Plane equation of the plane in coordinate system M where fixed figure.
Alternatively, first calibration point and described two other calibration point are followed successively by A points, B points and C points, 3 points of compositions Right angled triangle, the first calibration point A points are right angle electrical;
According toAndEquation group is set up, B points, the z coordinate value of C points is solved.
Alternatively, according to first calibration point and at least coordinate of two other calibration point in coordinate system M, use Least square fitting obtains plane equation of the plane in coordinate system M where the calibration maps, specially:
Coordinate (x of each calibration point in coordinate system M in the calibration mapsi, yi, zi), if plane where the calibration maps Plane equation is z=a*x+b*y+c;
OrderIt is minimum with S values, solve and obtain a, b, c.
Alternatively, plane and the camera module photosurface according to where the plane equation calculates the calibration maps Angle include:
The plane equation of plane is z=a*x+b*y+c where the calibration maps that solution is obtained, in the plane equation Arbitrarily take 3 points of (x01, y01, z01)、(x02, y02, z02) and (x03, y03, z03), it is flat according to where following calculating formula calculates calibration maps Face and the angle anglex and the angle angley with x-axis of y-axis:
Alternatively, the corresponding angle according to first camera module, and another camera module correspondence Angle, obtains the photosurface of another camera module and the angle of the first camera module photosurface, according to both Angle described another camera module of regulation of photosurface, with reach both photosurfaces it is parallel including:
According to the angle of plane where the calibration maps and the first camera module photosurface y-axis, and the calibration maps The angle of place plane and another camera module photosurface y-axis, obtain the first camera module photosurface y-axis with The angle of another camera module photosurface y-axis, according to the angle of both photosurface y-axis, regulation it is described another Camera module, it is parallel with the y-axis for reaching both photosurfaces;
According to the angle of plane where the calibration maps and the first camera module photosurface x-axis, and the calibration maps The angle of place plane and another camera module photosurface x-axis, obtain the first camera module photosurface x-axis with The angle of another camera module photosurface x-axis, according to the angle of both photosurface x-axis, regulation it is described another Camera module, it is parallel with the x-axis for reaching both photosurfaces.
A kind of parallel regulating system of camera module optical axis, including:
Control module is shot, for controlling to shoot same width calibration maps with least two camera modules to be regulated, is obtained The calibration maps image that each camera module shoots, the calibration maps are set towards camera module described at least two, described to take the photograph As the photosurface of module is vertical with its optical axis;
Computing module, for according to the calibration maps image for obtaining, photosurface and the institute of each camera module being calculated respectively State the angle of plane where calibration maps;
Adjustment module, for fixing the first camera module, according to the corresponding angle of first camera module, and in addition One corresponding angle of camera module, the photosurface for obtaining another camera module is photosensitive with first camera module The angle in face, according to both photosurfaces angle regulation described in another camera module, it is parallel to reach both photosurfaces.
As shown from the above technical solution, the parallel adjusting method of camera module optical axis provided by the present invention and system, to mark Determine figure to be set towards camera module, same width calibration maps are shot with least two camera modules to be regulated, obtain each shooting mould The calibration maps image that group shoots;Calibration maps image according to each camera module, calculates the photosurface and mark of each camera module respectively The angle of plane where fixed figure;The first camera module is fixed, according to the corresponding angle of the first camera module, and another is taken the photograph As the corresponding angle of module, the photosurface and the folder of the first camera module photosurface of another camera module to be regulated are obtained Angle, according to both photosurfaces angle regulation described in another camera module, it is parallel to reach both photosurfaces.Due to shooting The photosurface of module is vertical with its optical axis, therefore the photosurface of two camera modules is parallel, then optical axis is respective parallel.
Compared with the parallel method of optical axis between the existing regulation camera module based on camera module profile, camera module of the present invention The parallel adjusting method of optical axis and system, the optical axis that can more precisely adjust each camera module are parallel.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of flow chart of parallel adjusting method of camera module optical axis provided in an embodiment of the present invention;
Fig. 2 be in the embodiment of the present invention according to where calibration maps image calculates camera module photosurface and calibration maps plane The method flow diagram of angle;
Fig. 3 is the schematic diagram that plane included angle where camera module photosurface and calibration maps is asked in the embodiment of the present invention;
Fig. 4 is a kind of schematic diagram of parallel regulating system of camera module optical axis provided in an embodiment of the present invention.
Specific embodiment
In order that those skilled in the art more fully understand the technical scheme in the present invention, below in conjunction with of the invention real The accompanying drawing in example is applied, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described implementation Example is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, this area is common The every other embodiment that technical staff is obtained under the premise of creative work is not made, should all belong to protection of the present invention Scope.
Fig. 1 is refer to, the embodiment of the present invention provides a kind of parallel adjusting method of camera module optical axis, including step:
S10:Same width calibration maps are shot with least two camera modules to be regulated, each camera module is obtained and is shot Calibration maps image, the calibration maps set towards camera module described at least two, the photosurface of the camera module and its Optical axis is vertical.
For many camera modules, such as double camera modules, each camera module is arranged side by side.By calibration maps towards camera module Set, with each camera module to same calibration maps shooting image, obtain the calibration maps image that each camera module shoots.
S11:According to the calibration maps image for obtaining, the photosurface of each camera module and the calibration maps institute are calculated respectively In the angle of plane.
S12:The first camera module is fixed, according to the corresponding angle of first camera module, and another shooting The corresponding angle of module, obtains the photosurface of another camera module and the folder of the first camera module photosurface Angle, according to both photosurfaces angle regulation described in another camera module, it is parallel to reach both photosurfaces.
The first camera module is fixed to be adjusted other camera modules.Specifically, according to the first shooting mould for calculating The angle of plane where group photosurface and calibration maps, and another camera module photosurface to be regulated and plane where calibration maps Angle, obtain the angle of the first camera module photosurface and camera module photosurface to be regulated, the angle regulation according to both Camera module to be regulated, makes both photosurfaces parallel.Because the photosurface of camera module is vertical with its optical axis, therefore two shootings The photosurface of module is parallel, then optical axis is respective parallel.
Compared with the parallel method of optical axis between the existing regulation camera module based on camera module profile, the present embodiment shooting mould The group parallel adjusting method of optical axis, the optical axis that can more precisely adjust each camera module is parallel.
The present embodiment parallel adjusting method of camera module optical axis is described in further detail below.The present embodiment images mould The group parallel adjusting method of optical axis is comprised the following steps:
S10:Same width calibration maps are shot with least two camera modules to be regulated, each camera module is obtained and is shot Calibration maps image, the calibration maps set towards camera module described at least two, the photosurface of the camera module and its Optical axis is vertical.
Set towards camera module with calibration maps, the calibration maps can use chessboard trrellis diagram.
With each camera module to calibration maps shooting image, the calibration maps image that each camera module shoots is obtained.
S11:According to the calibration maps image for obtaining, the photosurface of each camera module and the calibration maps institute are calculated respectively In the angle of plane.
In this step, the photosurface of camera module and the folder of calibration maps place plane are calculated according to the calibration maps image for shooting Angle, can use following methods, and calibration point is provided with the calibration maps, refer to Fig. 2, including step;
S110:As origin, plane where with photosurface is built as xOy planes at any point with the camera module photosurface Three-dimensional cartesian coordinate system is found, coordinate of the calibration point in the calibration maps in the three-dimensional cartesian coordinate system asks for institute State plane equation of the plane in the three-dimensional cartesian coordinate system where calibration maps.
In specific this step, the plane equation of plane where calibration maps can be asked for using following methods, specifically included:
As origin, plane where with photosurface sets up three-dimensional straight as xOy planes at center with the camera module photosurface Angular coordinate system M, at least sets three calibration points in the calibration maps, and the i-th calibration point is determined in the calibration maps image for shooting Picpointed coordinate be (xi', yi', 0), refer to Fig. 3.
In the calibration maps image for shooting, image corresponds to the xOy planes of coordinate system M, and picture centre corresponds to photosurface Center, determines coordinate of the corresponding picture point of each calibration point in coordinate system M in calibration maps image, and the picture point of the i-th calibration point is sat It is designated as (xi', yi', 0).
The first calibration point is measured in the calibration maps to the camera module group lens surface apart from H, according to being calculated as below Formula calculates the coordinate (x for obtaining the first calibration point in coordinate system M1, y1, z1), specially:
Wherein, (Cx, Cy, 0) and the coordinate at the camera module photosurface center is represented, S represents that the picture point of the first calibration point is arrived The distance on the camera module group lens surface to be measured, meetsF represents the focal length of the camera module group lens.This Coordinate (x of the calibration point of sample first in coordinate system M1, y1, z1) determine it is known.
X coordinate value and y-coordinate value of i-th calibration point in coordinate system M are calculated according to the formula that is calculated as below, specially:
Wherein, (xi, yi, zi) represent coordinate of i-th calibration point in coordinate system M, ziIt is unknown.
Built with the relation at angle according to arbitrary two other calibration point side triangle with first calibration point Vertical equation group, solves the z coordinate value of two other calibration point in coordinate system M.Triangle is constituted according to there are three calibration points The side of shape and the trigonometric function relation at angle, equation group is set up using coordinate of each calibration point in coordinate system M, is asked by equation group Solve z coordinate value of two other calibration point in coordinate system M.More calibration points in calibration maps can be solved by the method Coordinate.
It is exemplary, refer to Fig. 3, the first calibration point is set in calibration maps and two other calibration point be followed successively by A points, B points and C points, 3 form right angle triangles, the first calibration point A points are right angle electrical.A point coordinates (x1, y1, z1), B point coordinates (x2, y2, z2), C point coordinates (x3, y3, z3)。
According toAndSet up equation group:
By above-mentioned solving equations B points, the z-axis coordinate value of C points, so as to solve obtain B points, the coordinate of C points.
Then, according to first calibration point and at least coordinate of two other calibration point in coordinate system M, institute is asked for State plane equation of the plane in coordinate system M where calibration maps.
Plane equation of the calibration maps place plane in coordinate system M can be tried to achieve in principle according to three calibration points.But it is Reduction error, can solve multiple calibration points in acquisition calibration maps, and the calibration maps institute is obtained using least square fitting In plane equation of the plane in coordinate system M, specially:
Coordinate (x of each calibration point in coordinate system M in the calibration mapsi, yi, zi), if plane where the calibration maps Plane equation is z=a*x+b*y+c;Order
It is minimum with S values, solve and obtain a, b, c, so as to solve calibration maps institute In the plane equation of plane.
S111:The folder of the calibration maps place plane and the camera module photosurface is calculated according to the plane equation Angle.
After plane equation of the plane in coordinate system M where upper step tries to achieve the calibration maps, in putting down that solution is obtained Arbitrarily take at 3 points in the equation of face, you can try to achieve xOy planes (the camera module sense i.e. to be measured of plane where calibration maps and coordinate system M Smooth surface) angle.
Exemplary, arbitrarily can take 3 points of (x in the plane equation for obtaining is solved01, y01, z01)、(x02, y02, z02) (x03, y03, z03), the angle anglex and the angle with x-axis of plane and y-axis according to where following calculating formula calculates calibration maps angley:
In next step S12:The first camera module is fixed, according to the corresponding angle of first camera module, and The corresponding angle of another camera module, obtains the photosurface and first camera module of another camera module The angle of photosurface, angle described another camera module of regulation according to both photosurfaces is flat to reach both photosurfaces OK, can specifically be adjusted by the following method:
Can be according to the angle of plane where the calibration maps and the first camera module photosurface y-axis, and the mark Plane where fixed figure and the angle of another camera module photosurface y-axis, obtain the first camera module photosurface y The angle of axle and another camera module photosurface y-axis, according to the angle of both photosurface y-axis, adjust it is described in addition One camera module, it is parallel with the y-axis for reaching both photosurfaces.
Can be according to the angle of plane where the calibration maps and the first camera module photosurface x-axis, and the demarcation Plane where figure and the angle of another camera module photosurface x-axis, obtain the first camera module photosurface x-axis With the angle of another camera module photosurface x-axis, according to the angle of both photosurface x-axis, described other one is adjusted Individual camera module, it is parallel with the x-axis for reaching both photosurfaces.
The parallel adjusting method of the present embodiment camera module optical axis, the optical axis that can be applied to adjust many camera modules is parallel, can Double camera modules are applied particularly to, the optical axis that can more accurately adjust each camera module is parallel, reaches many camera modules Good imaging effect.
Accordingly, Fig. 4 is refer to, the embodiment of the present invention also provides a kind of parallel regulating system of camera module optical axis, including:
Control module 20 is shot, for controlling to shoot same width calibration maps with least two camera modules to be regulated, is obtained The calibration maps image that each camera module shoots is obtained, the calibration maps are set towards camera module described at least two, described The photosurface of camera module is vertical with its optical axis;
Computing module 21, for according to the calibration maps image for obtaining, calculate respectively the photosurface of each camera module with The angle of plane where the calibration maps;
Adjustment module 22, for fixing the first camera module, according to the corresponding angle of first camera module, Yi Jiling The corresponding angle of an outer camera module, obtains the photosurface of another camera module and the first camera module sense The angle of smooth surface, according to both photosurfaces angle regulation described in another camera module, it is parallel to reach both photosurfaces.
The parallel regulating system of the present embodiment camera module optical axis, is set, with to be regulated with calibration maps towards camera module At least two camera modules shoot same width calibration maps, obtain the calibration maps image that each camera module shoots;According to each shooting mould The calibration maps image of group, calculates the photosurface of each camera module and the angle of plane where calibration maps respectively;Fix the first shooting Module, according to the corresponding angle of the first camera module, and another camera module corresponding angle, obtain to be regulated another The photosurface of an outer camera module and the angle of the first camera module photosurface, according to both photosurfaces angle regulation described in Another camera module, it is parallel to reach both photosurfaces.Because the photosurface of camera module is vertical with its optical axis, therefore two The photosurface of individual camera module is parallel, then optical axis is respective parallel.
Compared with the parallel method of optical axis between the existing regulation camera module based on camera module profile, camera module of the present invention The parallel regulating system of optical axis, the optical axis that can more precisely adjust each camera module is parallel.
A kind of parallel adjusting method of camera module optical axis provided by the present invention and system are described in detail above. Specific case used herein is set forth to principle of the invention and implementation method, and the explanation of above example is use Understand the method for the present invention and its core concept in help.It should be pointed out that for those skilled in the art, Under the premise without departing from the principles of the invention, some improvement and modification can also be carried out to the present invention, these improve and modify Fall into the protection domain of the claims in the present invention.

Claims (8)

1. a kind of parallel adjusting method of camera module optical axis, it is characterised in that including:
Same width calibration maps are shot with least two camera modules to be regulated, the calibration maps that each camera module shoots are obtained Image, the calibration maps are set towards camera module described at least two, and the photosurface of the camera module is vertical with its optical axis;
According to the calibration maps image for obtaining, the photosurface and plane where the calibration maps of each camera module are calculated respectively Angle;
The first camera module is fixed, according to the corresponding angle of first camera module, and another camera module is right Angle is answered, the photosurface of another camera module and the angle of the first camera module photosurface is obtained, according to two Described another camera module of angle regulation of person's photosurface, it is parallel to reach both photosurfaces.
2. the parallel adjusting method of camera module optical axis according to claim 1, it is characterised in that set in the calibration maps There is calibration point;
According to the calibration maps image for obtaining, the photosurface of the camera module and the angle bag of plane where the calibration maps are calculated Include:
As origin, plane where with photosurface sets up three-dimensional straight as xOy planes at any point with the camera module photosurface Angular coordinate system, the coordinate of calibration point in the calibration maps in the three-dimensional cartesian coordinate system, asks for the calibration maps Plane equation of the place plane in the three-dimensional cartesian coordinate system;
The angle of the calibration maps place plane and the camera module photosurface is calculated according to the plane equation.
3. the parallel adjusting method of camera module optical axis according to claim 2, it is characterised in that described with the shooting mould Any point of group photosurface is origin, and plane where with photosurface sets up three-dimensional cartesian coordinate system as xOy planes, according to described The coordinate of calibration point in calibration maps in the three-dimensional cartesian coordinate system, plane is in the three-dimensional where asking for the calibration maps Plane equation in rectangular coordinate system includes:
As origin, plane where with photosurface is set up three-dimensional right angle and is sat as xOy planes at center with the camera module photosurface Mark system M, at least sets three calibration points in the calibration maps, and the picture of the i-th calibration point is determined in the calibration maps image for shooting Point coordinates is (xi', yi', 0);
The first calibration point is measured in the calibration maps to the camera module group lens surface apart from H, according to formula meter is calculated as below Calculate the coordinate (x for obtaining the first calibration point in coordinate system M1, y1, z1), specially:
x 1 = ( x 1 ′ - C x ) - z 1 * ( x 1 ′ - C x ) / S y 1 = ( y 1 ′ - C y ) - z 1 * ( y 1 ′ - C y ) / S z 1 = H + S ;
Wherein, (Cx, Cy, 0) and the coordinate at the camera module photosurface center is represented, S represents the picture point of the first calibration point described in The distance on camera module group lens surface to be measured, meetsF represents the focal length of the camera module group lens;
X coordinate value and y-coordinate value of i-th calibration point in coordinate system M are calculated according to the formula that is calculated as below, specially:
x i = ( x i ′ - C x ) - z i * ( x i ′ - C x ) / S y i = ( y i ′ - C y ) - z i * ( y i ′ - C y ) / S ;
Wherein, (xi, yi, zi) represent coordinate of i-th calibration point in coordinate system M, ziIt is unknown;
According to arbitrary two other calibration point side triangle with first calibration point and the relation foundation side at angle Journey group, solves the z coordinate value of two other calibration point in coordinate system M;
According to first calibration point and at least coordinate of two other calibration point in coordinate system M, the calibration maps are asked for Plane equation of the place plane in coordinate system M.
4. the parallel adjusting method of camera module optical axis according to claim 3, it is characterised in that first calibration point and Described two other calibration point is followed successively by A points, B points and C points, 3 form right angle triangles, and the first calibration point A points are straight Angle point;
According toAndEquation group is set up, B points, the z coordinate value of C points is solved.
5. the parallel adjusting method of camera module optical axis according to claim 3, it is characterised in that demarcated according to described first Point and at least coordinate of two other calibration point in coordinate system M, the calibration maps institute is obtained using least square fitting In plane equation of the plane in coordinate system M, specially:
Coordinate (x of each calibration point in coordinate system M in the calibration mapsi, yi, zi), if the plane of plane where the calibration maps Equation is z=a*x+b*y+c;
OrderIt is minimum with S values, solve and obtain a, b, c.
6. the parallel adjusting method of camera module optical axis according to claim any one of 2-5, it is characterised in that the basis Plane where the plane equation calculates the calibration maps includes with the angle of the camera module photosurface:
The plane equation of plane is z=a*x+b*y+c where the calibration maps that solution is obtained, any in the plane equation Take 3 points of (x01, y01, z01)、(x02, y02, z02) and (x03, y03, z03), according to following calculating formula calculate calibration maps where plane with The angle anglex of the y-axis and angle angley with x-axis:
a n g l e x = a s i n ( z 02 - z 01 y 02 - y 01 ) ;
a n g l e y = a s i n ( z 03 - z 02 x 03 - x 02 ) .
7. the parallel adjusting method of camera module optical axis according to claim 6, it is characterised in that described according to described first The corresponding angle of camera module, and another camera module corresponding angle, obtain another camera module The angle of photosurface and the first camera module photosurface, angle regulation according to both photosurfaces it is described another image Module, with reach both photosurfaces it is parallel including:
According to the angle of plane where the calibration maps and the first camera module photosurface y-axis, and where the calibration maps The angle of plane and another camera module photosurface y-axis, obtain the first camera module photosurface y-axis with it is described The angle of another camera module photosurface y-axis, according to the angle of both photosurface y-axis, described another shooting of regulation Module, it is parallel with the y-axis for reaching both photosurfaces;
According to the angle of plane where the calibration maps and the first camera module photosurface x-axis, and where the calibration maps The angle of plane and another camera module photosurface x-axis, obtain the first camera module photosurface x-axis with it is described The angle of another camera module photosurface x-axis, according to the angle of both photosurface x-axis, described another shooting of regulation Module, it is parallel with the x-axis for reaching both photosurfaces.
8. a kind of parallel regulating system of camera module optical axis, it is characterised in that including:
Control module is shot, for controlling to shoot same width calibration maps with least two camera modules to be regulated, each institute is obtained The calibration maps image of camera module shooting is stated, the calibration maps are set towards camera module described at least two, the shooting mould The photosurface of group is vertical with its optical axis;
Computing module, for according to the calibration maps image for obtaining, the photosurface and the mark of each camera module being calculated respectively The angle of plane where fixed figure;
Adjustment module, for fixing the first camera module, according to the corresponding angle of first camera module, and another The corresponding angle of camera module, obtains the photosurface and the first camera module photosurface of another camera module Angle, according to both photosurfaces angle regulation described in another camera module, it is parallel to reach both photosurfaces.
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CN108683831A (en) * 2018-06-13 2018-10-19 信利光电股份有限公司 A kind of method and dual camera module raising section dual camera optical axis in terminal cover board
CN108848288A (en) * 2018-06-13 2018-11-20 信利光电股份有限公司 A kind of method and dual camera mould group adjusting dual camera optical axis on terminal display screen
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