CN212658242U - Calibration device for optical photogrammetry tracker - Google Patents
Calibration device for optical photogrammetry tracker Download PDFInfo
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- CN212658242U CN212658242U CN202021185995.0U CN202021185995U CN212658242U CN 212658242 U CN212658242 U CN 212658242U CN 202021185995 U CN202021185995 U CN 202021185995U CN 212658242 U CN212658242 U CN 212658242U
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- connecting rod
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- 230000003287 optical effect Effects 0.000 title claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 12
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000011324 bead Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 238000002834 transmittance Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model relates to a calibration device for an optical photogrammetry tracker, which comprises a connecting rod and two metal pieces, wherein the two metal pieces are respectively connected with the two ends of the connecting rod; the two metal pieces are provided with a first calibration surface and a second calibration surface; the two first calibration surfaces are parallel to each other, and neither of the two first calibration surfaces is parallel to the axis of the connecting rod; the two second calibration surfaces are parallel to each other, and are both parallel to the axis of the connecting rod; each first calibration surface and each second calibration surface are respectively provided with a plurality of reflective calibration points; the utility model has compact structure and convenient use and transportation; and the utility model discloses a mark point arranges at 4 faces, and two angles can adapt to the demarcation of a plurality of distances, a plurality of angles in the tracker field of vision scope.
Description
Technical Field
The utility model relates to a technical field of optical photogrammetry tracker especially relates to a calibrating device for optical photogrammetry tracker.
Background
The optical photogrammetry tracker is mainly used in combination with a handheld scanning device or a detector, and can obtain a high-precision measurement result without labeling points on a measured workpiece. The tracking accuracy of the tracker has a direct influence on the final measurement. The relative position and angle of two cameras of the tracker may slightly change under the influence of external environmental factors, so a device with known accurate size is needed to periodically calibrate the internal and external parameters of the tracker camera, so that the tracker keeps high precision.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the technical problem who exists among the prior art, provide a calibrating device for optics photogrammetry tracker for mark inside and outside parameter of tracker camera.
The utility model provides an above-mentioned technical problem's technical scheme as follows: a calibration device for an optical photogrammetry tracker comprises a connecting rod and two metal pieces, wherein the two metal pieces are respectively connected to two ends of the connecting rod; the two metal pieces are provided with a first calibration surface and a second calibration surface;
the two first calibration surfaces are parallel to each other, and neither of the two first calibration surfaces is parallel to the axis of the connecting rod;
the two second calibration surfaces are parallel to each other, and are both parallel to the axis of the connecting rod;
each first calibration surface with all be provided with a plurality of reflection of light calibration point on the second calibration surface.
The utility model has the advantages that: the structure is compact, and the use and the transportation are convenient; and the utility model discloses a mark point arranges at 4 faces, and two angles can adapt to the demarcation of a plurality of distances, a plurality of angles in the tracker field of vision scope.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Further, the included angle between the two first calibration surfaces and the axis of the connecting rod is 45 degrees.
Furthermore, a plurality of supporting legs are respectively installed on the two second calibration surfaces.
The beneficial effect of adopting the further scheme is that: is convenient to place when not in use.
Further, the length of the connecting rod is 1 m.
The beneficial effect of adopting the further scheme is that: the calibration of various distances within the field of view of the tracker can be accommodated.
Further, the connecting rod is made of carbon fiber materials.
The beneficial effect of adopting the further scheme is that: the carbon fiber material has light weight, high strength and small longitudinal thermal expansion coefficient, and can well keep the specific stability of the mark points at the two ends.
Furthermore, the reflective index point is made by spraying reflective paper on glass beads and covering high-transmittance quartz glass on the surface.
Drawings
Fig. 1 is a schematic structural diagram of a calibration device for an optical photogrammetry tracker according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. connecting rod, 2, metalwork, 3, first calibration face, 4, second calibration face, 5, reflection of light calibration point, 6, supporting leg.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1, a calibration device for an optical photogrammetry tracker includes a connecting rod 1 and two metal pieces 2, wherein the two metal pieces 2 are respectively connected to two ends of the connecting rod 1. Both metal pieces 2 have a first calibration face 3 and a second calibration face 4. Two first calibration face 3 are parallel to each other to two first calibration face 3 are all 45 with the contained angle of the axis of connecting rod 1 all not parallel with the axis of connecting rod 1, in this embodiment, two first calibration face 3. The two second calibration faces 4 are parallel to each other, and both the two second calibration faces 4 are parallel to the axis of the connecting rod 1. Each of the first and second calibration surfaces 3 and 4 is provided with a plurality of reflective calibration points 5.
The length of the connecting rod 1 is 1m, so that the connecting rod can adapt to the calibration of various distances in the field of view of the tracker. And connecting rod 1 adopts the carbon fiber material to make, and the quality is light, and intensity is high, and the longitudinal thermal expansion coefficient is little, can be good keep the concrete stability of both ends mark. The reflective index point 5 is made by spraying reflective paper on glass beads and covering high-transmittance quartz glass on the surface.
A plurality of supporting legs 6 are respectively installed on two second calibration surfaces 4, so that the embodiment can be conveniently placed when the device is not used, and the embodiment can be stably placed.
Keeping the tracker camera still, sequentially obtaining the coordinate values of each light-placing calibration point, and calculating to obtain the internal and external parameters of the tracker camera to finish the calibration of the tracker camera.
The embodiment has compact structure and is convenient to use and transport. The marking points of the embodiment are arranged on 4 surfaces, and the marking points are arranged at two angles, so that the marking points can be suitable for calibrating a plurality of distances and a plurality of angles in the view field of the tracker.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (6)
1. A calibration device for an optical photogrammetry tracker is characterized by comprising a connecting rod (1) and two metal pieces (2), wherein the two metal pieces (2) are respectively connected to two ends of the connecting rod (1); the two metal pieces (2) are provided with a first calibration surface (3) and a second calibration surface (4);
the two first calibration surfaces (3) are parallel to each other, and neither of the two first calibration surfaces (3) is parallel to the axis of the connecting rod (1);
the two second calibration surfaces (4) are parallel to each other, and the two second calibration surfaces (4) are both parallel to the axis of the connecting rod (1);
each first calibration surface (3) and the second calibration surface (4) are provided with a plurality of reflective calibration points (5).
2. Calibration device for an optical photogrammetric tracker according to claim 1, characterized in that the two first calibration faces (3) are both at an angle of 45 ° to the axis of the connecting rod (1).
3. Calibration device for an optical photogrammetric tracker according to claim 1, characterized in that a plurality of support legs (6) are mounted on each of the two second calibration surfaces (4).
4. Calibration device for an optical photogrammetric tracker according to claim 1, characterized in that the length of the connecting rod (1) is 1 m.
5. Calibration device for an optical photogrammetric tracker according to claim 1, characterized in that said connecting rod (1) is made of carbon fiber.
6. The calibrating device for the optical photogrammetric tracker according to claim 1, characterized in that the reflective index points (5) are made of glass beads coated with reflective paper, and the surface of the reflective index points is covered with high-transmittance quartz glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021185995.0U CN212658242U (en) | 2020-06-22 | 2020-06-22 | Calibration device for optical photogrammetry tracker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021185995.0U CN212658242U (en) | 2020-06-22 | 2020-06-22 | Calibration device for optical photogrammetry tracker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212658242U true CN212658242U (en) | 2021-03-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021185995.0U Active CN212658242U (en) | 2020-06-22 | 2020-06-22 | Calibration device for optical photogrammetry tracker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212658242U (en) |
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2020
- 2020-06-22 CN CN202021185995.0U patent/CN212658242U/en active Active
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