CN105021375A - Optical axis offset error compensation method and determination apparatus - Google Patents
Optical axis offset error compensation method and determination apparatus Download PDFInfo
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- CN105021375A CN105021375A CN201510454291.6A CN201510454291A CN105021375A CN 105021375 A CN105021375 A CN 105021375A CN 201510454291 A CN201510454291 A CN 201510454291A CN 105021375 A CN105021375 A CN 105021375A
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Abstract
The optical axis offset error compensation method of the present invention comprises the following steps: first, in the process of an optical imaging system changes from the longest focal length to the shortest focal length or from the shortest focal length to the longest focal length, several zooming positions are uniformly selected and the offset amount of a lower optical axis in the corresponding position is marked; then, the zooming position and the offset amount are stored as a compensation reference value; when using the compensation reference value, find the offset amount that should be compensated from the compensation reference value based on the current focal length value of the optical imaging system to compensate the optical imaging system. The determination apparatus of the present invention comprises an installation platform, a fixing device and a dividing indicator panel. According to the optical axis offset error compensation method and the determination apparatus, a holder servo-actuated system finds the corresponding offset amount from the compensation reference value based on the current focal length value to compensate the optical imaging system and to correct the instability of the optical axis of the optical imaging system. In this way, the center of the field of view is kept aligned with the object always, and the beneficial effect is substantial.
Description
Technical field
The present invention relates to a kind of light shaft offset error compensating method and determinator, in particular, particularly relate to a kind of side-play amount first measuring optical axis in optical imaging system zooming procedure, the light shaft offset error compensating method then utilizing the side-play amount measured in advance to compensate in use and determinator.
Background technology
Optical imaging system, has been widely used in all trades and professions of society at present.Due to the impact of optical design error and machining error, in zooming procedure, there is the shift phenomenon of optical axis instability in imaging system.Because the consistance of optical axis exists error, the accurate aligning to target cannot be realized, and then affect next step operation of personnel, even mislead operating personnel, bring bad consequence.
Summary of the invention
The present invention, in order to overcome the shortcoming of above-mentioned technical matters, provides a kind of light shaft offset error compensating method and determinator.
Light shaft offset error compensating method of the present invention, for compensating the light shaft offset error of optical imaging system, optical imaging system is arranged in The Cloud Terrace servomechanism; Its special feature is, compensation method realizes by the following method: first, at optical imaging system by longest focal length in shortest focal length or the process that changed to longest focal length by shortest focal length, evenly choose some zoom positions and the side-play amount of optical axis under calibrating relevant position, then zoom position and side-play amount are stored as compensation reference point; During use, the focal length value that The Cloud Terrace servomechanism is current according to optical imaging system, finds out the side-play amount that should compensate, compensates optical imaging system from compensation reference point, to ensure aiming at all the time of field of view center and target.
Light shaft offset error compensating method of the present invention, realizes especially by following steps: a). and equipment is fixed, and is first fixed on optical test bed by frock test block, is then fixed on frock test block by optical imaging system to be determined; B). choose reference plane, choose a plane in the front end of optical imaging system to be determined as reference plane, and 1 O chosen on reference plane is that initial point sets up rectangular coordinate system, if the centre coordinate of optical imaging system is P; C). setting graduation indicator board, is arranging graduation indicator board with reference plane apart from the position for D, and is ensureing that graduation indicator board is parallel with reference plane; D). on graduation indicator board, set up coordinate system, employing source of parallel light finds out the corresponding point of O point on graduation indicator board on reference plane, is set to O ˊ; According to the coordinate of P point relative to O point, graduation indicator board marks the P ˊ point corresponding to P point, and with P ˊ point for initial point sets up rectangular coordinate system; E). mark most focal length position, by video camera zoom to most focal length position, if zoom position is D1, by optical imaging system obtain the central point of picture in the enterprising row labels of graduation indicator board, if its coordinate is Q1 (X1, Y1); F). the mark of middle focal length position, in the process that optical imaging system is changed to shortest focal length by longest focal length, evenly choose several zoom positions, by optical imaging system obtain the central point of picture in the enterprising row labels of graduation indicator board; If zoom position be respectively D2, D3 ... D(n-1), the coordinate of its correspondence be respectively Q2 (X2, Y2), Q3 (X3, Y3) ..., Qn-1 (Xn-1, Yn-1); G). mark the shortest burnt position, by video camera zoom to the shortest burnt position, if zoom position is Dn, by optical imaging system obtain the central point of picture in the enterprising row labels of graduation indicator board, if its coordinate is Qn (Xn, Yn); H). calculate deviation angle, according to the distance D between reference plane and graduation indicator board, calculate the deviation angle of each zoom position optical axis, and the corresponding relation of deviation angle and zoom position is write in The Cloud Terrace servomechanism as compensating reference point; I). light shaft offset compensates, the focal length value that The Cloud Terrace servomechanism is current according to optical imaging system, finds out the side-play amount that should compensate, compensate optical imaging system from compensation reference point, to ensure aiming at all the time of field of view center and target.
Light shaft offset error compensating method of the present invention, step c) in distance D between graduation indicator board and reference plane be chosen between 10 ~ 30m, step e), f) and g) in the number of zoom position that marks be more than 6 or 6.
The determinator of light shaft offset error compensation of the present invention, is characterized in that: comprise mounting platform, stationary installation and graduation indicator board, described mounting platform is fixed on optical test bed, and stationary installation is fixed on mounting platform; Optical imaging system to be determined is fixed in stationary installation, and the plane crossing center, optical imaging system front end is reference plane, and graduation indicator board is positioned at the front end of reference plane and parallels with it.
The invention has the beneficial effects as follows: light shaft offset error compensating method of the present invention and determinator, on some zoom positions of optical imaging system, calibrate the light shaft offset error of optical imaging system, and focal position and light shaft offset error are stored as compensation reference point; During compensation, the focal length value that The Cloud Terrace servomechanism is current according to optical imaging system, the side-play amount that should compensate is found out from compensation reference point, optical imaging system is compensated, the optical axis instability of optical imaging system is made to obtain correction, ensure that aiming at all the time of field of view center and target, beneficial effect is remarkable.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of light shaft offset error determine device of the present invention;
Fig. 2 is the A direction view in Fig. 1;
Fig. 3 is the B direction view in Fig. 1.
In figure: 1 mounting platform, 2 stationary installations, 3 graduation indicator boards, 4 reference planes, 5 optical imaging systems.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As shown in Figure 1, give the structure principle chart of light shaft offset error determine device of the present invention, shown mounting platform 1 and stationary installation 2 constitute frock test block, mounting platform 1 is fixed on optical test bed, stationary installation 2 and mounting platform 1 fix, and optical imaging system 5 is arranged in stationary installation 2.The front end face choosing optical imaging system 5 is reference plane 4, as shown in Figure 2, gives the direction view of the A in Fig. 1, and the center point P in initial point O and optical imaging system is all arranged in reference plane 4.Shown graduation indicator board 3 is positioned at the front end of reference plane 4, and to be advisable at a distance of 10 ~ 30m, graduation indicator board 3 parallels with reference plane 4.The corresponding point O ˊ of initial point 0 on graduation indicator board 3 on reference plane 4 can be found out by source of parallel light, and then obtain the corresponding point P ˊ of P point.
Light shaft offset error compensating method concrete steps of the present invention are as follows:
1) test site is as shown in Figure 1 put up.The scope of suggestion chosen distance D is between 10 meters to 30 meters.With screw, frock test block is fixed on optical bench, then will the optical imaging system screw of test is needed to be arranged on frock test block;
1) with the distance D between tape measure metope and camera window;
2) find the O ˊ on graduation indicator board by source of parallel light, and indicate its position.
3), after the position of O ˊ is found out, according to the coordinate information of P point in Fig. 2, the position of P ˊ can be marked.
4) centered by P ˊ, coordinate system is set up.
5) optical system is powered on, video camera is zoomed to most focal length XW position, to the spider position shown in computer in the enterprising row labels of graduation indicator board, and record its coordinate Q1 (X1, Y1).
6) video camera is zoomed to EW position, to the spider position shown in computer in the enterprising row labels of graduation indicator board, and record its coordinate Q2 (X2, Y2).
7) video camera is zoomed to W position, to the spider position shown in computer in the enterprising row labels of graduation indicator board, and record its coordinate Q3 (X3, Y3).
8) video camera is zoomed to M position, to the spider position shown in computer in the enterprising row labels of graduation indicator board, and record its coordinate Q4 (X4, Y4).
9) video camera is zoomed to N position, to the spider position shown in computer in the enterprising row labels of graduation indicator board, and record its coordinate Q5 (X5, Y5).
10) video camera is zoomed to the shortest position of EN, to the spider position shown in computer in the enterprising row labels of graduation indicator board, and record its coordinate Q6 (X6, Y6).
By above measurement, can record at each zoom position, the side-play amount of optical axis, and deviation angle, the corresponding relation of this deviation angle information and zoom position is write in the storer of The Cloud Terrace servomechanism, The Cloud Terrace servomechanism can when optical system carries out zoom operation again, auto-compensation light shaft offset amount, guarantees aiming at all the time of field of view center and target.
Claims (4)
1. a light shaft offset error compensating method, for compensating the light shaft offset error of optical imaging system, optical imaging system is arranged in The Cloud Terrace servomechanism; It is characterized in that, compensation method realizes by the following method: first, at optical imaging system by longest focal length in shortest focal length or the process that changed to longest focal length by shortest focal length, evenly choose some zoom positions and the side-play amount of optical axis under calibrating relevant position, then zoom position and side-play amount are stored as compensation reference point; During use, the focal length value that The Cloud Terrace servomechanism is current according to optical imaging system, finds out the side-play amount that should compensate, compensates optical imaging system from compensation reference point, to ensure aiming at all the time of field of view center and target.
2. light shaft offset error compensating method according to claim 1, is characterized in that, realizes especially by following steps:
A). equipment is fixed, and is first fixed on optical test bed by frock test block, is then fixed on frock test block by optical imaging system to be determined;
B). choose reference plane, choose a plane in the front end of optical imaging system to be determined as reference plane, and 1 O chosen on reference plane is that initial point sets up rectangular coordinate system, if the centre coordinate of optical imaging system is P;
C). setting graduation indicator board, is arranging graduation indicator board with reference plane apart from the position for D, and is ensureing that graduation indicator board is parallel with reference plane;
D). on graduation indicator board, set up coordinate system, employing source of parallel light finds out the corresponding point of O point on graduation indicator board on reference plane, is set to O ˊ; According to the coordinate of P point relative to O point, graduation indicator board marks the P ˊ point corresponding to P point, and with P ˊ point for initial point sets up rectangular coordinate system;
E). mark most focal length position, by video camera zoom to most focal length position, if zoom position is D1, by optical imaging system obtain the central point of picture in the enterprising row labels of graduation indicator board, if its coordinate is Q1 (X1, Y1);
F). the mark of middle focal length position, in the process that optical imaging system is changed to shortest focal length by longest focal length, evenly choose several zoom positions, by optical imaging system obtain the central point of picture in the enterprising row labels of graduation indicator board; If zoom position be respectively D2, D3 ... D(n-1), the coordinate of its correspondence be respectively Q2 (X2, Y2), Q3 (X3, Y3) ..., Qn-1 (Xn-1, Yn-1);
G). mark the shortest burnt position, by video camera zoom to the shortest burnt position, if zoom position is Dn, by optical imaging system obtain the central point of picture in the enterprising row labels of graduation indicator board, if its coordinate is Qn (Xn, Yn);
H). calculate deviation angle, according to the distance D between reference plane and graduation indicator board, calculate the deviation angle of each zoom position optical axis, and the corresponding relation of deviation angle and zoom position is write in The Cloud Terrace servomechanism as compensating reference point;
I). light shaft offset compensates, the focal length value that The Cloud Terrace servomechanism is current according to optical imaging system, finds out the side-play amount that should compensate, compensate optical imaging system from compensation reference point, to ensure aiming at all the time of field of view center and target.
3. light shaft offset error compensating method according to claim 2, it is characterized in that: step c) in distance D between graduation indicator board and reference plane be chosen between 10 ~ 30m, step e), f) and g) in the number of zoom position that marks be more than 6 or 6.
4. a determinator for light shaft offset error compensation, is characterized in that: comprise mounting platform (1), stationary installation (2) and graduation indicator board (3), described mounting platform is fixed on optical test bed, and stationary installation is fixed on mounting platform; Optical imaging system (5) to be determined is fixed in stationary installation, and the plane crossing center, optical imaging system front end is reference plane (4), and graduation indicator board is positioned at the front end of reference plane and parallels with it.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105430377A (en) * | 2015-11-17 | 2016-03-23 | 高新兴科技集团股份有限公司 | Automatic deviation correction method and system for optical axis of machine core of camera |
| CN106124170B (en) * | 2016-08-26 | 2018-10-16 | 上海航天控制技术研究所 | A kind of camera optical axis direction computational methods based on high-precision attitude information |
| CN108960202A (en) * | 2018-08-01 | 2018-12-07 | 京东方科技集团股份有限公司 | A kind of intelligent commodity shelf, judges the method that commodity stack at system |
| CN110770669A (en) * | 2018-08-28 | 2020-02-07 | 深圳市大疆创新科技有限公司 | Target position marking method of holder, holder and shooting device |
| CN110858872A (en) * | 2018-08-23 | 2020-03-03 | 浙江宇视科技有限公司 | Optical axis offset compensation method and device |
| CN110995998A (en) * | 2019-12-12 | 2020-04-10 | 浙江大华技术股份有限公司 | Optical axis deviation calibration method and device |
| CN111045220A (en) * | 2019-12-17 | 2020-04-21 | 天津津航技术物理研究所 | Method for aligning optical axis and visual axis of zoom optical system |
| CN113970424A (en) * | 2021-10-22 | 2022-01-25 | 济南和普威视光电技术有限公司 | Lens zooming consistency dynamic deviation rectifying method and system under automatic tracking mode |
| TWI780676B (en) * | 2021-04-23 | 2022-10-11 | 梭特科技股份有限公司 | Compensating method of varying-focus image deviation of an image capturing device |
| CN117970637A (en) * | 2024-03-28 | 2024-05-03 | 南京埃米仪器科技有限公司 | Imaging module optical axis position deviation compensation method in focusing process |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008286548A (en) * | 2007-05-15 | 2008-11-27 | Konica Minolta Holdings Inc | Calibration method |
| CN101464142A (en) * | 2009-01-13 | 2009-06-24 | 洛阳汉腾光电有限公司 | Detection apparatus and detection method for plain shaft precision of camera |
| CN102082905A (en) * | 2010-12-31 | 2011-06-01 | 天津市亚安科技电子有限公司 | Method for detecting position of camera optic axis |
| CN102854000A (en) * | 2012-09-10 | 2013-01-02 | 广东工业大学 | Optical path detector for high-brightness LEDs and detection method of optical axis deviation in high-brightness LEDs |
| CN103018015A (en) * | 2012-12-26 | 2013-04-03 | 青岛歌尔声学科技有限公司 | Device and method for detecting optical-axis offset of lens in equipment |
| CN104301715A (en) * | 2014-10-15 | 2015-01-21 | 天津市亚安科技股份有限公司 | Method and device for achieving 3D preset accurate linkage between camera and pan-tilt |
| CN204788904U (en) * | 2015-07-29 | 2015-11-18 | 山东神戎电子股份有限公司 | Optical axis offset error survey device |
-
2015
- 2015-07-29 CN CN201510454291.6A patent/CN105021375A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008286548A (en) * | 2007-05-15 | 2008-11-27 | Konica Minolta Holdings Inc | Calibration method |
| CN101464142A (en) * | 2009-01-13 | 2009-06-24 | 洛阳汉腾光电有限公司 | Detection apparatus and detection method for plain shaft precision of camera |
| CN102082905A (en) * | 2010-12-31 | 2011-06-01 | 天津市亚安科技电子有限公司 | Method for detecting position of camera optic axis |
| CN102854000A (en) * | 2012-09-10 | 2013-01-02 | 广东工业大学 | Optical path detector for high-brightness LEDs and detection method of optical axis deviation in high-brightness LEDs |
| CN103018015A (en) * | 2012-12-26 | 2013-04-03 | 青岛歌尔声学科技有限公司 | Device and method for detecting optical-axis offset of lens in equipment |
| CN104301715A (en) * | 2014-10-15 | 2015-01-21 | 天津市亚安科技股份有限公司 | Method and device for achieving 3D preset accurate linkage between camera and pan-tilt |
| CN204788904U (en) * | 2015-07-29 | 2015-11-18 | 山东神戎电子股份有限公司 | Optical axis offset error survey device |
Non-Patent Citations (1)
| Title |
|---|
| 李丽平等: "实现跟踪***精确定位的动态补偿技术", 《微计算机信息》 * |
Cited By (14)
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| CN105430377A (en) * | 2015-11-17 | 2016-03-23 | 高新兴科技集团股份有限公司 | Automatic deviation correction method and system for optical axis of machine core of camera |
| CN106124170B (en) * | 2016-08-26 | 2018-10-16 | 上海航天控制技术研究所 | A kind of camera optical axis direction computational methods based on high-precision attitude information |
| CN108960202B (en) * | 2018-08-01 | 2022-05-10 | 京东方科技集团股份有限公司 | Intelligent goods shelf, system and method for judging goods stacking |
| CN108960202A (en) * | 2018-08-01 | 2018-12-07 | 京东方科技集团股份有限公司 | A kind of intelligent commodity shelf, judges the method that commodity stack at system |
| US11189044B2 (en) | 2018-08-01 | 2021-11-30 | Boe Technology Group Co., Ltd. | Method and device for detecting object stacking state and intelligent shelf |
| CN110858872A (en) * | 2018-08-23 | 2020-03-03 | 浙江宇视科技有限公司 | Optical axis offset compensation method and device |
| CN110770669A (en) * | 2018-08-28 | 2020-02-07 | 深圳市大疆创新科技有限公司 | Target position marking method of holder, holder and shooting device |
| CN110995998A (en) * | 2019-12-12 | 2020-04-10 | 浙江大华技术股份有限公司 | Optical axis deviation calibration method and device |
| CN110995998B (en) * | 2019-12-12 | 2021-06-18 | 浙江大华技术股份有限公司 | Optical axis deviation calibration method and device |
| CN111045220A (en) * | 2019-12-17 | 2020-04-21 | 天津津航技术物理研究所 | Method for aligning optical axis and visual axis of zoom optical system |
| TWI780676B (en) * | 2021-04-23 | 2022-10-11 | 梭特科技股份有限公司 | Compensating method of varying-focus image deviation of an image capturing device |
| CN113970424A (en) * | 2021-10-22 | 2022-01-25 | 济南和普威视光电技术有限公司 | Lens zooming consistency dynamic deviation rectifying method and system under automatic tracking mode |
| CN117970637A (en) * | 2024-03-28 | 2024-05-03 | 南京埃米仪器科技有限公司 | Imaging module optical axis position deviation compensation method in focusing process |
| CN117970637B (en) * | 2024-03-28 | 2024-06-18 | 南京埃米仪器科技有限公司 | Imaging module optical axis position deviation compensation method in focusing process |
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Application publication date: 20151104 |