CN114279464A - Tower crane calibration field for calibrating errors of aerial survey camera and POS (Point of sale) integrated system - Google Patents
Tower crane calibration field for calibrating errors of aerial survey camera and POS (Point of sale) integrated system Download PDFInfo
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- CN114279464A CN114279464A CN202111532149.0A CN202111532149A CN114279464A CN 114279464 A CN114279464 A CN 114279464A CN 202111532149 A CN202111532149 A CN 202111532149A CN 114279464 A CN114279464 A CN 114279464A
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- 229910000831 Steel Inorganic materials 0.000 claims description 28
- 239000010959 steel Substances 0.000 claims description 28
- 239000003973 paint Substances 0.000 claims description 6
- 239000011150 reinforced concrete Substances 0.000 claims description 6
- 239000004567 concrete Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 4
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Abstract
The invention provides a tower crane calibration field for calibrating errors of an aerial survey camera and a POS integrated system, which comprises a tower and GPS ground control points, wherein the purpose of establishing the tower crane calibration field is to simulate the actual flight attitude of an airplane and the aerial photography process on the ground, calibrate the errors of the camera and the POS, analyze and compensate various error items influencing the precision of the integrated system. Meanwhile, the calibration field can separately research all error items, so that the cost is saved while the test is facilitated. The tower crane checking field disclosed by the invention is less influenced by weather conditions, the operability is good, the number and the precision of GPS ground control points of the tower crane checking field can meet the use requirements, the cost is lower, a plurality of groups of repeated data can be supplied, the repeated tests can be carried out for an unlimited time, and better and more comprehensive data can be provided.
Description
Technical Field
The invention relates to the field of photogrammetry and remote sensing, in particular to a tower crane calibration field for calibrating system errors.
Background
Digital aerial remote sensing is one of important earth observation means, and has been widely applied to aspects such as national resource investigation, mapping, environmental disaster monitoring and the like. The integration of aerial survey camera and POS has become an indispensable mode for aerial photogrammetry, and since the camera and POS system have different space reference and time systems, the calibration of relative parameters between the camera and POS system is the most important link for system integration.
In the current digital aerial remote sensing industry, a calibration field for calibrating errors of an aerial survey camera and a POS integrated system is generally established as an air-to-ground calibration field, an aerial survey device is carried by an airplane, and actual flight calibration is carried out according to a certain route. Because the airplane needs to fly in real time and the limiting factors such as a matched flying field, airspace application, a pilot, high cost, safety and the like, the invention is urgently needed to provide the calibration field which can be widely applied to aerial survey calibration.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a tower crane calibration field for calibrating the errors of an aerial survey camera and a POS integrated system. A new tower crane calibration field is designed, is widely applied to calibrating errors of an aerial survey camera and a POS (point of sale) integrated system, and can replace the original open-air field calibration field.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a tower crane calibration field for calibrating errors of an aerial survey camera and a POS integrated system comprises a tower and GPS ground control points, aims to simulate the actual flight attitude and the aerial photography process of an airplane on the ground, calibrates the errors of the camera and the POS, analyzes error items influencing the precision of the integrated system, and compensates the errors. Meanwhile, the calibration field can separately research all error items, so that the cost is saved while the test is facilitated.
A tower crane calibration field for calibrating errors of an aerial survey camera and a POS integrated system comprises a tower and GPS ground control points, wherein the tower comprises a tower 1 and a tower 2, a steel wire 1 and a steel wire 2 are connected between the tower 1 and the tower 2, and the motor 1 and the motor 2 respectively pull the steel wire 1 and the steel wire 2 to do uniform reciprocating motion; the horizontal distance between steel wire 1 and steel wire 2 is greater than 3m, and aerial survey camera is hung to steel wire 1, and supporting power is hung to steel wire 2.
The GPS ground control points are 99 points in total, the 99 points adopt a five-point quincuncial point arrangement method, the distance between the transverse points of each GPS ground control point is 16 meters, the distance between the longitudinal points of each GPS ground control point is 8 meters, and the whole ground area shot by the aerial survey camera is covered;
each GPS control point adopts a fixed embedded pile to arrange permanent GPS measurement control points, long cylinders are used at the GPS control points, the long cylinders are reinforced concrete columns, the cross sections of the long cylinders are square, the upper surfaces of the long cylinders are parallel to the ground level, the long cylinders are embedded underground, and the height of the part higher than the ground is more than 10 cm.
The surface of the target is painted by adopting black and white double-color field grid interval paint, the lower right white area of the target is a point location number marking area, 99 points are uniformly and sequentially numbered, the point location number is 3, the front part of the point location number is in a P shape, P represents point and is the abbreviation of a control point, namely the point location number marking content is Pxxx, the point location number marking is painted or sprayed by adopting red paint, the overall size of the Pxxx marked by the point location number is 15cm multiplied by 8cm, the target is a square, and the side length is consistent with the length and width of the long column.
The area of the upper surface of the long column body except the cross-shaped measuring mark nail is provided with a target, a measuring point of the target is located at a position of a center point which is alternate between black and white, when the reinforced concrete column is manufactured, the measuring point is embedded into the cross-shaped measuring mark nail, a screw rod of the cross-shaped measuring mark nail is embedded into the concrete column, only a screw cap is exposed, the screw cap of the cross-shaped measuring mark nail is in a cross-shaped wire type, the size of the screw cap is 3cm, and the 3cm size is enlarged so that a camera picture can be observed more easily.
The invention has the beneficial effects that:
(1) in terms of operability, the tower crane calibration field is less affected by weather conditions, and the operability is good.
(2) From the calibration effect, the flight calibration field can not provide enough GPS ground control points with sufficient quantity and accuracy, and the quantity and the accuracy of the GPS ground control points of the tower crane calibration field can meet the use requirements.
(3) In the aspect of cost, the tower crane calibration has lower cost obviously, and can supply a plurality of groups of repeated data. The test can be repeated for an unlimited number of times, providing better and more comprehensive data.
Drawings
FIG. 1 is a schematic diagram of a tower crane calibration field of the invention.
FIG. 2 is a schematic diagram of a target of a tower crane calibration field GPS control point of the present invention.
Wherein, 1-cross measuring mark nail, 2-point location number marking area.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
As shown in figure 1, the tower crane calibration field for calibrating the errors of the aerial survey camera and the POS integrated system is characterized in that the aerial survey camera is hung on a steel wire 1, matched power supplies and other equipment are hung on a steel wire 2, the steel wire a and the steel wire b are synchronously pulled to move by the motor 1 and the motor 2 at the same time, the aerial survey camera takes pictures of ground control points, corresponding POS data are recorded, and the errors of the integrated system are calibrated among the obtained pictures, the POS data and the ground control points.
A tower crane calibration field for calibrating errors of an aerial survey camera and a POS integrated system comprises a tower and GPS ground control points, wherein the tower comprises a tower 1 and a tower 2, a steel wire 1 and a steel wire 2 are connected between the tower 1 and the tower 2, and the motor 1 and the motor 2 respectively pull the steel wire 1 and the steel wire 2 to do uniform reciprocating motion; the distance between the tower 1 and the tower 2 is 70m, and the height is 50 m; the horizontal distance between the steel wire 1 and the steel wire 2 is 3m, the ground distance is 40m, and the load is 40 kg; the aerial survey camera is hung on the steel wire 1, and the matched power supply is hung on the steel wire 2.
The GPS ground control point is designed as follows:
the GPS ground control points count 99 points, the 99 points adopt a five-point quincuncial point arrangement method, the distance between the transverse points of each GPS ground control point is 16 meters, the distance between the longitudinal points of each GPS ground control point is 8 meters, and the whole ground area shot by the aerial survey camera is covered;
permanent GPS measurement control points are distributed at each GPS control point by adopting a fixed embedded pile, a long column reinforced concrete upright is used at the GPS control point, the cross section of the long column is square, the upper surface of the long column is parallel to the ground level, the long column is embedded underground, and the height of the part higher than the ground is more than 10 cm;
the surface of the target is painted by adopting black and white double-color field grid interval paint, the lower right white area of the target is a point position number marking area, 99 points are uniformly and sequentially numbered, the point number is 3, the front part of the point number is marked by a P character (P represents point, namely shorthand of a control point), namely P x, the point number is painted or sprayed by adopting red paint, the integral size of the P x is 15cm x 8cm, the target is a square, and the side length is consistent with the length and width of the long column body;
a target measuring point is positioned at a black-white alternate center point, a specially-made cross measuring mark nail is embedded in the target measuring point, when the reinforced concrete column is manufactured, the measuring point is embedded in the cross measuring mark nail, a screw rod of the cross measuring mark nail is embedded in the concrete column, only a screw cap is exposed, the screw cap of the cross measuring mark nail is in a cross wire type, and the size of the screw cap is 3cm (the size of the 3cm is enlarged so that a camera picture can be observed more easily); the area of the upper surface of the long column body except the cross measuring mark nail is provided with a target.
Claims (5)
1. The utility model provides a tower crane calibration field for demarcating aerial survey camera and POS integrated system error, includes tower and GPS ground control point, its characterized in that:
in the tower crane calibration field for calibrating the errors of the aerial survey camera and the POS integrated system, the tower comprises a tower 1 and a tower 2, a steel wire 1 and a steel wire 2 are connected between the tower 1 and the tower 2, and the motor 1 and the motor 2 respectively drag the steel wire 1 and the steel wire 2 to do uniform reciprocating motion; the horizontal distance between steel wire 1 and steel wire 2 is greater than 3m, and aerial survey camera is hung to steel wire 1, and supporting power is hung to steel wire 2.
2. The tower crane calibration field used for calibrating the errors of the aerial survey camera and the POS integrated system according to claim 1, which is characterized in that:
the GPS ground control points are 99 points in total, the 99 points adopt a five-point quincuncial point arrangement method, the distance between the transverse points of each GPS ground control point is 16 meters, the distance between the longitudinal points of each GPS ground control point is 8 meters, and the whole ground area shot by the aerial survey camera is covered.
3. The tower crane calibration field used for calibrating the errors of the aerial survey camera and the POS integrated system according to claim 1, which is characterized in that:
each GPS control point adopts a fixed embedded pile to arrange permanent GPS measurement control points, long cylinders are used at the GPS control points, the long cylinders are reinforced concrete columns, the cross sections of the long cylinders are square, the upper surfaces of the long cylinders are parallel to the ground level, the long cylinders are embedded underground, and the height of the part higher than the ground is more than 10 cm.
4. The tower crane calibration field used for calibrating the errors of the aerial survey camera and the POS integrated system according to claim 1, which is characterized in that:
the surface of the target is painted by adopting black and white double-color field grid interval paint, the lower right white area of the target is a point location number marking area, 99 points are uniformly and sequentially numbered, the point location number is 3, the front part of the point location number is in a P shape, P represents point and is the abbreviation of a control point, namely the point location number marking content is Pxxx, the point location number marking is painted or sprayed by adopting red paint, the overall size of the Pxxx marked by the point location number is 15cm multiplied by 8cm, the target is a square, and the side length is consistent with the length and width of the long column.
5. The tower crane calibration field used for calibrating the errors of the aerial survey camera and the POS integrated system according to claim 1, which is characterized in that:
the area of the upper surface of the long column body except the cross-shaped measuring mark nail is provided with a target, a measuring point of the target is located at a position of a center point which is alternate between black and white, when the reinforced concrete column is manufactured, the measuring point is embedded into the cross-shaped measuring mark nail, a screw rod of the cross-shaped measuring mark nail is embedded into the concrete column, only a screw cap is exposed, the screw cap of the cross-shaped measuring mark nail is in a cross-shaped wire type, the size of the screw cap is 3cm, and the 3cm size is enlarged so that a camera picture can be observed more easily.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111532149.0A CN114279464A (en) | 2021-12-14 | 2021-12-14 | Tower crane calibration field for calibrating errors of aerial survey camera and POS (Point of sale) integrated system |
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| CN202111532149.0A CN114279464A (en) | 2021-12-14 | 2021-12-14 | Tower crane calibration field for calibrating errors of aerial survey camera and POS (Point of sale) integrated system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114803866A (en) * | 2022-06-27 | 2022-07-29 | 杭州未名信科科技有限公司 | Staged optimization control method and device for lifting motion state of intelligent tower crane |
| KR102559042B1 (en) * | 2022-12-23 | 2023-07-25 | 한국건설기술연구원 | the improved image modeling system with matching ground control point and the image modeling method using the same, and the computer program thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108279024A (en) * | 2016-07-21 | 2018-07-13 | 河南城建学院 | A kind of method of calibration and device based on POS terminal and digital aviation measuring camera |
-
2021
- 2021-12-14 CN CN202111532149.0A patent/CN114279464A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108279024A (en) * | 2016-07-21 | 2018-07-13 | 河南城建学院 | A kind of method of calibration and device based on POS terminal and digital aviation measuring camera |
Non-Patent Citations (3)
| Title |
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| 姚继锋: "多传感器集成检校的理论方法与实践" * |
| 李军杰: "SWDC-4A数字航测系统的关键技术与应用" * |
| 程庆敏: "POS辅助图像定位" * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114803866A (en) * | 2022-06-27 | 2022-07-29 | 杭州未名信科科技有限公司 | Staged optimization control method and device for lifting motion state of intelligent tower crane |
| KR102559042B1 (en) * | 2022-12-23 | 2023-07-25 | 한국건설기술연구원 | the improved image modeling system with matching ground control point and the image modeling method using the same, and the computer program thereof |
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