CN115690383B - Calibration parameter acquisition method of image acquisition device and borehole imaging method - Google Patents
Calibration parameter acquisition method of image acquisition device and borehole imaging method Download PDFInfo
- Publication number
- CN115690383B CN115690383B CN202211359836.1A CN202211359836A CN115690383B CN 115690383 B CN115690383 B CN 115690383B CN 202211359836 A CN202211359836 A CN 202211359836A CN 115690383 B CN115690383 B CN 115690383B
- Authority
- CN
- China
- Prior art keywords
- image acquisition
- supporting leg
- acquisition device
- sub
- calibration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000003384 imaging method Methods 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000005553 drilling Methods 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Abstract
The invention provides a calibration parameter acquisition method of an image acquisition device and a borehole imaging method. The calibration parameter acquisition method of the image acquisition device comprises the following steps: providing an image acquisition device; providing a calibration plate which is in the shape of an annular cylinder, wherein scales are arranged on the calibration plate; the image acquisition equipment is placed in the calibration plate, and the part, with the scales, of the calibration plate is imaged by using the image acquisition device; and obtaining calibration parameters of the image acquisition device based on the imaging result of the last step. According to the calibration parameter acquisition method of the image acquisition device, the auxiliary centering device in the image acquisition equipment can fix the image acquisition device at one end of the annular cylinder by arranging the annular cylinder and the plurality of supporting legs, so that the image acquisition device and the borehole can be centered when the image acquisition device is used for borehole imaging, accurate calibration parameters are acquired when the image acquisition device is calibrated, and further, the imaged image distortion can be avoided.
Description
Technical Field
The invention relates to the technical field of buildings, in particular to a calibration parameter acquisition method and a borehole imaging method of an image acquisition device.
Background
Drilling inspection is the most basic method for pile foundation detection in the civil construction field, pile foundation drilling imaging is a common pile foundation quality inspection method at present, and the drilling imaging is generally realized by adopting an image acquisition device. However, when the current image acquisition device is used for imaging a borehole, the problem that an imaged image has image distortion is common.
Disclosure of Invention
The invention aims to provide a calibration parameter acquisition method of an image acquisition device and a borehole imaging method, which are used for solving the problem that an imaged image is distorted when the image acquisition device images a borehole in the prior art.
In order to solve the problems in the prior art, in a first aspect, the present invention provides a calibration parameter acquiring method of an image acquisition device, where the calibration parameter acquiring method of the image acquisition device includes:
providing image acquisition equipment, wherein the image acquisition equipment comprises an auxiliary centering device and an image acquisition device; the auxiliary centering device comprises an annular column body, a plurality of supporting legs, a spring connecting ring and a plurality of springs; the support legs are positioned on the outer side of the annular cylinder and are distributed at intervals along the circumferential direction of the annular cylinder; each supporting leg comprises a first sub supporting leg and a second sub supporting leg, the first sub supporting leg is hinged with the second sub supporting leg, the first sub supporting leg and the second sub supporting leg comprise opposite first ends and second ends, the first ends of the first sub supporting leg and the second sub supporting leg are hinged on the outer wall of the annular column body, and the second ends of the first sub supporting leg and the second sub supporting leg are provided with idler wheels; the spring connecting ring is sleeved on the periphery of the annular cylinder, is spaced from the annular cylinder, and is positioned between the first supporting leg and the second supporting leg of each supporting leg; the spring is correspondingly arranged with the supporting legs, one end of the spring is fixed at the hinge point of the first supporting leg and the second supporting leg, and the other end of the spring is sleeved on the spring connecting ring through a lantern ring; the image acquisition device is fixed at one end of the annular cylinder;
providing a calibration plate, wherein the calibration plate is in an annular cylinder shape, and scales are arranged on the calibration plate;
placing the image acquisition equipment into a calibration plate, and imaging the part, with the scales, of the calibration plate by using the image acquisition device;
and obtaining the calibration parameters of the image acquisition device based on the imaging result of the previous step.
Optionally, the plurality of the supporting legs are uniformly distributed at intervals along the circumferential direction of the annular cylinder.
Optionally, the image acquisition device comprises a fisheye camera.
Optionally, the annular cylinder comprises an annular cylinder.
Optionally, the axial direction of the roller is perpendicular to the length direction of the first sub-supporting leg and the length direction of the second sub-supporting leg.
Optionally, obtaining the calibration parameter of the image acquisition device based on the imaging result of the previous step includes:
and obtaining the calibration parameters of the image acquisition device based on the coordinates of each imaging point.
In a second aspect, the present invention also provides a borehole imaging method, comprising:
obtaining calibration parameters of the image acquisition device by adopting the calibration parameter obtaining method of the image acquisition device according to any one of the first aspect;
placing the image acquisition equipment into a drill hole, and imaging the side wall of the drill hole by using the image acquisition device;
restoring the surface image of the side wall of the drill hole frame by frame according to the calibration parameters and the imaging result of the previous step;
and splicing the frame-by-frame surface images to obtain the side wall image of the drilling hole.
Optionally, after obtaining the sidewall image of the borehole, the method further includes:
and carrying out feature recognition on the side wall image.
As described above, the calibration parameter acquisition method and the borehole imaging method of the image acquisition device of the present invention have the following beneficial effects:
according to the calibration parameter acquisition method of the image acquisition device, the auxiliary centering device in the image acquisition equipment can fix the image acquisition device at one end of the annular cylinder by arranging the annular cylinder and the plurality of supporting legs, so that the image acquisition device and the borehole can be centered when the image acquisition device is used for borehole imaging, accurate calibration parameters are acquired when the image acquisition device is calibrated, and further, the imaged image distortion can be avoided.
According to the borehole imaging method, the accurate calibration parameters of the image acquisition device can be obtained by adopting the calibration parameter acquisition method of the image acquisition device, so that image distortion presented by the borehole imaging method can be avoided.
Drawings
Fig. 1 is a flowchart of a calibration parameter acquisition method of an image acquisition device according to the present invention.
Fig. 2 is a partial front view of an auxiliary centering device in the calibration parameter acquisition method of the image acquisition device of the present invention.
Fig. 3 is a top view of a leg of the auxiliary centering device in the calibration parameter acquisition method of the image acquisition device of the present invention.
Fig. 4 is a schematic connection diagram of springs in an auxiliary centering device in the calibration parameter acquisition method of the image acquisition device.
Fig. 5 is a schematic structural diagram of a calibration board in the calibration parameter acquisition method of the image acquisition device of the present invention.
Fig. 6 is a schematic diagram of an imaging point in a calibration plate in the calibration parameter acquisition method of the image acquisition device of the present invention.
Fig. 7 is a schematic diagram of an imaging point in an imaging plane acquired by the image acquisition device in the calibration parameter acquisition method of the image acquisition device of the present invention.
Fig. 8 is a flow chart of a borehole imaging method of the present invention.
Description of the reference numerals:
1. the device comprises an annular column body, 2, supporting legs, 21, first sub-supporting legs, 22, second sub-supporting legs, 3, idler wheels, 4, spring connecting rings, 5, springs, 6, hinge points, 7, lantern rings, 8, side wall hinge points, 9, calibration plates, 91, scales, 92, imaging points, 93 and an imaging plane.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present invention.
The drill hole is characterized by having a substantially uniform aperture and a cross-sectional shape close to a circle. When the characteristics of the side wall of the drill hole are identified, the spreading precision of the image is higher, so that the characteristics of cracks, material composition, diseases and the like can be found conveniently.
Drilling inspection is the most basic method for pile foundation detection in the civil construction field, pile foundation drilling imaging is a common pile foundation quality inspection method at present, and the drilling imaging is generally realized by adopting an image acquisition device. However, when the current image acquisition device is used for imaging a borehole, the problem that an imaged image has image distortion is common.
Example 1
Referring to fig. 1, the present invention provides a calibration parameter obtaining method of an image acquisition device, including:
s11: providing image acquisition equipment, wherein the image acquisition equipment comprises an auxiliary centering device and an image acquisition device; the auxiliary centering device comprises an annular column body, a plurality of supporting legs, a spring connecting ring and a plurality of springs; the support legs are positioned on the outer side of the annular cylinder and are distributed at intervals along the circumferential direction of the annular cylinder; each supporting leg comprises a first sub supporting leg and a second sub supporting leg, the first sub supporting leg is hinged with the second sub supporting leg, the first sub supporting leg and the second sub supporting leg comprise opposite first ends and second ends, the first ends of the first sub supporting leg and the second sub supporting leg are hinged on the outer wall of the annular column body, and the second ends of the first sub supporting leg and the second sub supporting leg are provided with idler wheels; the spring connecting ring is sleeved on the periphery of the annular cylinder, has a space with the annular cylinder and is positioned between the first supporting leg and the second supporting leg of each supporting leg; the spring is arranged corresponding to the supporting legs, one end of the spring is fixed at the hinge point of the first supporting leg and the second supporting leg, and the other end of the spring is sleeved on the spring connecting ring through a lantern ring; the image acquisition device is fixed at one end of the annular cylinder;
s12: providing a calibration plate, wherein the calibration plate is in an annular cylinder shape, and scales are arranged on the calibration plate;
s13: placing the image acquisition equipment into a calibration plate, and imaging the part, with the scales, of the calibration plate by using the image acquisition device;
s14: and obtaining the calibration parameters of the image acquisition device based on the imaging result of the previous step.
According to the calibration parameter acquisition method of the image acquisition device, the auxiliary centering device in the image acquisition equipment can fix the image acquisition device at one end of the annular cylinder by arranging the annular cylinder and the plurality of supporting legs, so that the image acquisition device and the drill hole can be centered when the image acquisition device is used for imaging the drill hole, accurate calibration parameters can be acquired when the image acquisition device is calibrated, and further, image distortion after imaging can be avoided. According to the auxiliary centering device, the plurality of springs are arranged corresponding to the supporting legs, one ends of the springs are fixed at the hinge points of the first sub-supporting legs and the second sub-supporting legs, the other ends of the springs are sleeved on the spring connecting rings through the lantern rings, and the supporting legs are uniformly stressed, so that the supporting legs can be synchronously retracted and extended.
Specifically, referring to fig. 2 to 4 in conjunction with fig. 1, in step S11, an image capturing apparatus is provided, where the image capturing apparatus includes an auxiliary centering device and an image capturing device; the auxiliary centering device comprises an annular column body 1, a plurality of supporting legs 2, a spring connecting ring 4 and a plurality of springs 5; the plurality of support legs 2 are positioned on the outer side of the annular cylinder 1 and are distributed at intervals along the circumferential direction of the annular cylinder 1; each supporting leg 2 comprises a first sub-supporting leg 21 and a second sub-supporting leg 22, the first sub-supporting leg 21 is hinged with the second sub-supporting leg 22, the first sub-supporting leg 21 and the second sub-supporting leg 22 comprise opposite first ends and second ends, the first ends of the first sub-supporting leg 21 and the second sub-supporting leg 22 are hinged on the outer wall of the annular column 1, and the second ends of the first sub-supporting leg 21 and the second sub-supporting leg 22 are provided with rollers 3; the spring connecting ring 4 is sleeved on the periphery of the annular cylinder 1, the spring connecting ring 4 is spaced from the annular cylinder 1, and is positioned between the first supporting leg 21 and the second supporting leg 22 of each supporting leg 2; the spring 5 is arranged corresponding to the supporting leg 2, one end of the spring 5 is fixed at the hinge point of the first supporting leg 21 and the second supporting leg 22, and the other end of the spring 5 is sleeved on the spring connecting ring 4 through a lantern ring; the image pickup device (not shown) is fixed to one end of the annular cylinder.
As an example, a plurality of the legs 2 may be arranged at regular intervals in the circumferential direction of the annular cylinder 1.
As an example, a plurality of the springs 5 may be provided in one-to-one correspondence with a plurality of the legs 2, that is, one of the springs 5 corresponds to one of the legs 2.
Specifically, the number of the supporting legs 2 may be set according to actual needs, and in fig. 2, the number of the supporting legs 2 is three as an example, and at this time, an included angle of 120 ° is formed between the adjacent supporting legs 2. Of course, in other examples, the number of legs 2 may also be four, five, six, seven, eight or more.
As an example, the annular cylinder 1 may comprise an annular cylinder.
Further, the springs 5 are strung together through the spring connection rings 4, and meanwhile, a certain free sliding space exists between the spring connection rings 4 and the annular cylinder 1.
In one example, the force of the spring 5 is substantially uniform when the auxiliary centering device is placed in a borehole, so that the annular cylinder 1 of the auxiliary centering device is relatively stable centered.
The springs 5 are correspondingly arranged with the support legs 2, one ends of the springs 5 are fixed at the hinge points 6 of the first sub-support legs 21 and the second sub-support legs 22, and the other ends of the springs 5 are sleeved on the spring connecting rings 4 through the lantern rings 7, so that the support legs 2 are uniformly stressed, and the support legs 2 are synchronously retracted and released; therefore, the center of the auxiliary centering device can be ensured to be always maintained at the center of the drilling hole, and when the image acquisition device is arranged at one end of the annular cylinder 1, the subsequent trouble to image processing caused by the eccentricity of the image acquisition device can be avoided.
As an example, the outer wall of the annular column 1 is provided with a plurality of side wall hinge points 8, and the first ends of the first sub-supporting leg 21 and the second sub-supporting leg 22 are respectively hinged to the outer wall of the annular column 1 via different side wall hinge points 8.
As an example, the center of the first sub-leg 21 may be hinged with the center of the second sub-leg 22.
As an example, the axial direction of the roller 3 is perpendicular to the longitudinal direction of the first sub-leg 21 and the longitudinal direction of the second sub-leg 22.
As an example, the image capture device may include, but is not limited to, a fisheye camera. The fisheye camera can shoot the surrounding environment at a wide angle, and one camera can finish the observation of the surrounding. The fish-eye lens is similar to a sphere in imaging, has obvious difference with the actual habit of human eyes on an object, and needs to be corrected in application.
The auxiliary centering device can be matched with a fisheye camera, namely the fisheye camera is fixed at one end of the annular cylinder 1, and the auxiliary centering device and the fisheye camera sink together and enter the calibration plate 9. The auxiliary centering device has the functions of stabilizing the fisheye camera and reducing camera rotation shake, so that the fisheye camera is centered at the center of the calibration plate 9, and the accuracy of the acquired calibration parameters in the fisheye camera calibration process is ensured.
Specifically, referring to fig. 5 in conjunction with fig. 1, in step S12, a calibration plate 9 is provided, the calibration plate 9 is in the shape of an annular cylinder, and the calibration plate 9 is provided with scales 91.
Specifically, referring to fig. 6 to 7 in conjunction with fig. 1, in step S13, the image capturing device is placed in the calibration board 9, and the portion of the calibration board 9 having the scale 91 is imaged by using the image capturing device.
Specifically, referring to fig. 6 to 7 in conjunction with fig. 1, in step S14, calibration parameters of the image capturing device are obtained based on the imaging result of the previous step.
Specifically, in step S14, obtaining the calibration parameters of the image acquisition device based on the imaging result of the previous step may include:
calibration parameters of the image acquisition device are derived based on the coordinates of each imaging point 92.
Specifically, please continueReferring to fig. 6 and 7, the imaging point 92 on the cylindrical surface of the calibration plate 9 can be expressed as a function of W as follows h，θ Where h is the distance from the imaging point 92 to the top surface of the calibration plate 9, and θ is the angle between the orthographic projection of the imaging point 92 on the top surface of the calibration plate 9 and the abscissa in the rectangular coordinate system.
The imaging point 92 imaged by the image acquisition device is located on a sector plane of the circular imaging plane 93 and can be represented by a polar coordinate as W' r，θ Where r is the radius of the circular imaging plane 93, and θ is the angle between the abscissa of the imaged point 92 imaged by the image acquisition device and the polar coordinate system.
When in calibration, the image acquisition device is hung in the middle of the calibration plate 9, and imaging is shot.
The imaged plane 93 is restored to a point on the cylinder, since the image acquisition device is also an axisymmetric system, the θ value is unchanged, and the h-coordinate and r-coordinate need to be transformed.
And for the scale marks and points on the calibration plate 9, the scale marks with equal intervals are converted into scale marks with variable density in the same radial direction through the image collection and packaging device under the same theta. The fitting calibration formula for establishing cylindrical surface scale points and imaging surface scale points is as follows:
h i,θ ＝f(r i,θ )＝α 1 r i,θ 3 +α 2 r i,θ 2 +α 3 r i,θ 3 +α 4
wherein h is i,θ For the height of the scale i on the cylindrical surface of the calibration plate 9 at the angle theta point, r i,θ Is the radial length of the point on the imaging plane 93 corresponding to the angle theta point of the scale i on the cylindrical surface of the calibration plate 9.
Through the corresponding h i,θ ，r i,θ Can be fitted to the coefficient alpha 1 、α 2 、α 3 Alpha and alpha 4 The method comprises the steps of carrying out a first treatment on the surface of the Coefficient alpha 1 、α 2 、α 3 Alpha and alpha 4 And the calibration parameters are obtained.
Example two
Referring to fig. 8 in conjunction with fig. 1 to 7, a borehole imaging method is further provided in the present embodiment, where the borehole imaging method includes:
s21: obtaining calibration parameters of the image acquisition device by adopting the calibration parameter obtaining method of the image acquisition device in the first embodiment;
s22: placing the image acquisition equipment into a drill hole, and imaging the side wall of the drill hole by using the image acquisition device;
s23: restoring the surface image of the side wall of the drill hole frame by frame according to the calibration parameters and the imaging result of the previous step;
s24: and splicing the frame-by-frame surface images to obtain the side wall image of the drilling hole.
In the borehole imaging method, the accurate calibration parameters of the image acquisition device can be obtained by adopting the calibration parameter acquisition method of the image acquisition device in the first embodiment, so that the image distortion presented by the borehole imaging method can be avoided.
As an example, after obtaining the sidewall image of the borehole, the method further includes:
s25: and carrying out feature recognition on the side wall image.
During testing, the image acquisition device is used for imaging the points on the video, and the points are transformed from a circular plane (namely the imaging plane 93) to a cylindrical plane according to the fitting mode. The cylindrical plane can be unfolded into a rectangular plan view under the rectangular coordinates of hθ.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (8)
1. The method for acquiring the calibration parameters of the image acquisition device is characterized by comprising the following steps of:
providing image acquisition equipment, wherein the image acquisition equipment comprises an auxiliary centering device and an image acquisition device; the auxiliary centering device comprises an annular column body, a plurality of supporting legs, a spring connecting ring and a plurality of springs; the support legs are positioned on the outer side of the annular cylinder and are distributed at intervals along the circumferential direction of the annular cylinder; each supporting leg comprises a first sub supporting leg and a second sub supporting leg, the first sub supporting leg is hinged with the second sub supporting leg, the first sub supporting leg and the second sub supporting leg comprise opposite first ends and second ends, the first ends of the first sub supporting leg and the second sub supporting leg are hinged on the outer wall of the annular column body, and the second ends of the first sub supporting leg and the second sub supporting leg are provided with idler wheels; the spring connecting ring is sleeved on the periphery of the annular cylinder, is spaced from the annular cylinder, and is positioned between the first sub-supporting leg and the second sub-supporting leg of each supporting leg; the spring is correspondingly arranged with the supporting legs, one end of the spring is fixed at the hinge point of the first sub-supporting leg and the second sub-supporting leg, and the other end of the spring is sleeved on the spring connecting ring through a lantern ring; the image acquisition device is fixed at one end of the annular cylinder;
providing a calibration device, wherein the calibration device is in the shape of an annular cylinder, and scales are arranged on the calibration device;
placing the image acquisition equipment into a calibration device, and imaging a part, with scales, of the calibration device by using the image acquisition device;
and obtaining the calibration parameters of the image acquisition device based on the imaging result of the previous step.
2. The method for acquiring calibration parameters of an image acquisition device according to claim 1, wherein a plurality of the legs are arranged at uniform intervals along the circumferential direction of the annular cylinder.
3. The method of claim 1, wherein the image capture device comprises a fisheye camera.
4. The method of claim 1, wherein the annular cylinder comprises an annular cylinder.
5. The method for obtaining calibration parameters of an image capturing device according to claim 1, wherein an axial direction of the roller is perpendicular to a length direction of the first sub-leg and a length direction of the second sub-leg.
6. The method according to any one of claims 1 to 5, wherein obtaining the calibration parameters of the image capturing device based on the imaging result of the previous step includes:
and obtaining the calibration parameters of the image acquisition device based on the coordinates of each imaging point.
7. A borehole imaging method, comprising:
obtaining calibration parameters of the image acquisition device by adopting the calibration parameter obtaining method of the image acquisition device according to any one of claims 1 to 6;
placing the image acquisition equipment into a drill hole, and imaging the side wall of the drill hole by using the image acquisition device;
restoring the surface image of the side wall of the drill hole frame by frame according to the calibration parameters and the imaging result of the previous step;
and splicing the frame-by-frame surface images to obtain the side wall image of the drilling hole.
8. The borehole imaging method as recited in claim 7, further comprising, after obtaining the sidewall image of the borehole:
and carrying out feature recognition on the side wall image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211359836.1A CN115690383B (en) | 2022-11-02 | 2022-11-02 | Calibration parameter acquisition method of image acquisition device and borehole imaging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211359836.1A CN115690383B (en) | 2022-11-02 | 2022-11-02 | Calibration parameter acquisition method of image acquisition device and borehole imaging method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115690383A CN115690383A (en) | 2023-02-03 |
| CN115690383B true CN115690383B (en) | 2023-12-05 |
Family
ID=85047196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211359836.1A Active CN115690383B (en) | 2022-11-02 | 2022-11-02 | Calibration parameter acquisition method of image acquisition device and borehole imaging method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115690383B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101216287A (en) * | 2008-01-11 | 2008-07-09 | 天津大学 | Spring concentricity and verticality measuring meter and its measurement method |
| EP2091689A2 (en) * | 2006-12-20 | 2009-08-26 | Essilor International (Compagnie Générale D'Optique) | Device for determining the position and/or transverse dimension of a drill hole in a lens for the presentation of spectacles with a rimless frame |
| CN108564630A (en) * | 2018-05-02 | 2018-09-21 | 吉林大学 | The caliberating device and its scaling method merged based on laser radar and camera camera |
| CN209417640U (en) * | 2019-03-21 | 2019-09-20 | 湖南安全技术职业学院（长沙煤矿安全技术培训中心） | Separable camera assembly for notebook computer |
| US10460473B1 (en) * | 2018-12-14 | 2019-10-29 | Zoox, Inc. | Camera calibration system |
| CN210293108U (en) * | 2019-02-27 | 2020-04-10 | 浙江树人学院（浙江树人大学） | Three-dimensional scanning calibration plate |
| CN211374000U (en) * | 2020-01-10 | 2020-08-28 | 上海微晁自动化科技有限公司 | Human eye tracking calibration device |
| CN111998786A (en) * | 2020-07-30 | 2020-11-27 | 南京城市地下空间工程研究院有限公司 | High-precision shield tail clearance measuring device and method |
| CN114923410A (en) * | 2022-05-09 | 2022-08-19 | 一汽解放汽车有限公司 | Longitudinal beam hole site online detection method and device |
| CN114998334A (en) * | 2022-08-02 | 2022-09-02 | 苏州华兴源创科技股份有限公司 | Workpiece through hole position calibration method and detection device |
| CN115046499A (en) * | 2022-06-17 | 2022-09-13 | 中国地质大学（武汉） | Circular laser pipeline detection system and method based on triangulation principle |
-
2022
- 2022-11-02 CN CN202211359836.1A patent/CN115690383B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2091689A2 (en) * | 2006-12-20 | 2009-08-26 | Essilor International (Compagnie Générale D'Optique) | Device for determining the position and/or transverse dimension of a drill hole in a lens for the presentation of spectacles with a rimless frame |
| CN101216287A (en) * | 2008-01-11 | 2008-07-09 | 天津大学 | Spring concentricity and verticality measuring meter and its measurement method |
| CN108564630A (en) * | 2018-05-02 | 2018-09-21 | 吉林大学 | The caliberating device and its scaling method merged based on laser radar and camera camera |
| US10460473B1 (en) * | 2018-12-14 | 2019-10-29 | Zoox, Inc. | Camera calibration system |
| CN210293108U (en) * | 2019-02-27 | 2020-04-10 | 浙江树人学院（浙江树人大学） | Three-dimensional scanning calibration plate |
| CN209417640U (en) * | 2019-03-21 | 2019-09-20 | 湖南安全技术职业学院（长沙煤矿安全技术培训中心） | Separable camera assembly for notebook computer |
| CN211374000U (en) * | 2020-01-10 | 2020-08-28 | 上海微晁自动化科技有限公司 | Human eye tracking calibration device |
| CN111998786A (en) * | 2020-07-30 | 2020-11-27 | 南京城市地下空间工程研究院有限公司 | High-precision shield tail clearance measuring device and method |
| CN114923410A (en) * | 2022-05-09 | 2022-08-19 | 一汽解放汽车有限公司 | Longitudinal beam hole site online detection method and device |
| CN115046499A (en) * | 2022-06-17 | 2022-09-13 | 中国地质大学（武汉） | Circular laser pipeline detection system and method based on triangulation principle |
| CN114998334A (en) * | 2022-08-02 | 2022-09-02 | 苏州华兴源创科技股份有限公司 | Workpiece through hole position calibration method and detection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115690383A (en) | 2023-02-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Genovese et al. | A 360-deg digital image correlation system for materials testing | |
| CN111351446A (en) | Light field camera calibration method for three-dimensional topography measurement | |
| WO2020244464A1 (en) | Tripod stand used for 3d modeling and camera image capture posture recognition method | |
| CN108871230B (en) | Experiment system and method of three-dimensional laser scanner for indoor simulation test | |
| CN203849004U (en) | Projection target surface used for detecting resolution of ultra-wide angle fish-eye lens and detection device applying same | |
| CN111586401B (en) | Optical center testing method, device and equipment | |
| CN110501026B (en) | Camera internal orientation element calibration device and method based on array star points | |
| CN107941153A (en) | A kind of vision system of laser ranging optimization calibration | |
| CN115690383B (en) | Calibration parameter acquisition method of image acquisition device and borehole imaging method | |
| CN110068313B (en) | Digital zenith instrument orientation method based on projection transformation | |
| CN111376254B (en) | Plane ranging method and system and plane adjusting method and system for mechanical arm | |
| CN112509060A (en) | CT secondary scanning positioning method and system based on image depth learning and computer readable storage medium | |
| CN110060625B (en) | LED display screen acquisition vignetting compensation method | |
| CN103606155B (en) | Camera field of view scaling method and device | |
| CN109104606B (en) | System and method for rapidly measuring inclination angle and field angle of camera | |
| CN209861061U (en) | Device for measuring wide-range horizontal field angle of camera | |
| CN108898585B (en) | Shaft part detection method and device | |
| JP3705592B2 (en) | Method and apparatus for correcting vertical distortion when annular image is expanded to panoramic image | |
| CN113658270B (en) | Method, device, medium and system for multi-vision calibration based on workpiece hole center | |
| CN116071433A (en) | Camera calibration method and system, and computer-readable storage medium | |
| CN112468800B (en) | Testing method and testing system of wide-angle camera module | |
| CN218208716U (en) | Auxiliary centering device and image acquisition equipment | |
| CN109363687B (en) | Cervical vertebra mobility detection device and method | |
| CN110650331B (en) | Array camera module testing method and target device thereof | |
| CN211042092U (en) | Calibration device of small-hole inner and outer wall vision measurement system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |