CN112396665B - Calibration system of AR HUD imaging calibration plate and use method thereof - Google Patents
Calibration system of AR HUD imaging calibration plate and use method thereof Download PDFInfo
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- CN112396665B CN112396665B CN202011409246.6A CN202011409246A CN112396665B CN 112396665 B CN112396665 B CN 112396665B CN 202011409246 A CN202011409246 A CN 202011409246A CN 112396665 B CN112396665 B CN 112396665B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/80—Analysis of captured images to determine intrinsic or extrinsic camera parameters, i.e. camera calibration
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30244—Camera pose
Abstract
The invention discloses a calibration system of an AR HUD imaging calibration plate and a using method thereof, and belongs to the technical field of illumination systems. It includes: a detection bench; two laser range finders arranged on the detection rack; the calibration vehicle is opposite to the detection rack; the light-transmitting pore plate is arranged on the calibration vehicle, and one side end surface of the light-transmitting pore plate is opposite to the two laser range finders; the laser calibration plate is arranged on the calibration vehicle and is opposite to the end face of the other side of the light-transmitting pore plate; the position adjusting device is arranged on the calibration vehicle and used for adjusting the position of the calibration vehicle; and the camera position calibration plate is arranged on the calibration vehicle and used for installing the industrial camera. The invention further provides a use method of the calibration system of the AR HUD imaging calibration board. Therefore, compared with the prior art, the method has the advantages of high calibration efficiency and simple and convenient operation.
Description
Technical Field
The invention relates to the technical field of lighting systems, in particular to a calibration system of an AR HUD imaging calibration board and a using method thereof.
Background
The detection of ARHUD plays an extremely important role for glass manufacturers and HUD manufacturers of whole vehicles. Because of ARHUD's formation of image distance is far away, whole car glass merchant and HUD producer all simulate ARHUD formation of image position on producing the line at present and mark, simulate whole car gesture, reach certain requirement. In order to obtain accurate calibration data, a certain point of the AR imaging optical path close to the bench is intercepted or a calibration trolley is directly placed for measurement.
If the change adjustment of the vehicle model or the ARHUD light path design change is involved, the whole vehicle glass manufacturer can only change the calibration plate tool or reposition the position of the movable trolley, the early-stage cost is large, the period is long, and the positioning precision is not high.
The conventional ARHUD calibration technical mode can only calibrate a single model vehicle type, and once a plurality of vehicle types are calibrated, a calibration plate tool designed in a matching way needs to be replaced for a fixed calibration plate; the method needs to measure and position again or roughly determine the position in a moving trolley mode, is long in time consumption, occupies a field, is not flexible to use, and is low in precision.
In conclusion, the existing positioning technology has the problems of low calibration efficiency and complex operation. Therefore, a new technical solution is needed.
Disclosure of Invention
The invention provides a calibration system of an AR HUD imaging calibration plate and a use method thereof, and solves the problems of low calibration efficiency and complex operation in the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows: calibration system of AR HUD formation of image calibration board includes:
a detection bench;
the two laser range finders are arranged on the detection rack;
the calibration vehicle is opposite to the detection rack;
the light-transmitting pore plate is arranged on the calibration vehicle, and one side end surface of the light-transmitting pore plate is opposite to the two laser range finders;
the laser calibration plate is arranged on the calibration vehicle and is opposite to the end face of the other side of the light-transmitting pore plate;
the position adjusting device is arranged on the calibration vehicle and used for adjusting the position of the calibration vehicle; and
and the camera position calibration plate is arranged on the calibration vehicle and used for installing the industrial camera.
Preferably, the position adjusting device comprises an X-axis adjusting mechanism, a Y-axis adjusting mechanism and a Z-axis adjusting mechanism, and the X-axis adjusting mechanism, the Y-axis adjusting mechanism and the Z-axis adjusting mechanism are mutually independent and do not interfere with each other.
Preferably, the X-axis adjusting mechanism, the Y-axis adjusting mechanism and the Z-axis adjusting mechanism respectively include a ball screw guide rail, a locking device and a driving handle for driving the ball screw to rotate.
Preferably, the drive handle is a knob or wheel.
The invention also provides a use method of the calibration system of the AR HUD imaging calibration plate, which comprises the following steps:
1) Firstly, the calibration vehicle moves to an approximate position, is opposite to the laser range finder, and starts the laser range finder;
2) Observing a light-transmitting hole plate on the calibration vehicle at the moment, looking up the position of a light beam of the laser range finder at the moment, shifting the position adjusting device if the two laser beams are not in the circular hole range of the laser calibration plate, ensuring that the two laser beams pass through the light-transmitting hole plate to irradiate the circular hole of the rear laser calibration plate, and ensuring that the position calibration of the calibration vehicle is finished when the two laser beams are in the circular hole range of the laser calibration plate;
3) And finally, the industrial camera can be opened to calibrate the shooting position of the camera, and after the calibration of the camera position is completed, a series of AR HUD optical items can be tested.
Compared with the prior art, the invention has the following advantages: according to the calibration system of the AR HUD imaging calibration plate, the light transmitting hole plate on the calibration vehicle is observed, the position of the light beam of the laser range finder is checked at the moment, and the position of the calibration vehicle is adjusted through the position adjusting device until the two laser beams are all in the range of the circular holes of the laser calibration plate, so that the calibration efficiency is high, and the operation is simple and convenient. The invention also provides a use method of the calibration system of the ARHUD imaging calibration plate. Therefore, compared with the prior art, the method has the advantages of high calibration efficiency and simplicity and convenience in operation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view structure diagram of a calibration system of the AR HUD imaging calibration plate according to the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a schematic view of another perspective structure of the calibration system of the AR HUD imaging calibration plate proposed by the present invention;
fig. 4 is a partially enlarged view of fig. 3.
In the figure: the method comprises the following steps of 1-detecting a rack, 2-laser range finder, 3-calibrating vehicle, 4-light-transmitting pore plate, 5-laser calibrating plate, 6-position adjusting device and 7-camera position calibrating plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art based on the embodiments of the present invention without inventive step, are within the scope of the present invention.
As shown in fig. 1-4, fig. 1 is a schematic view structure diagram of a calibration system of the AR HUD imaging calibration plate according to the present invention; FIG. 2 is an enlarged view of a portion of FIG. 1; FIG. 3 is another schematic view structure diagram of the calibration system of the AR HUD imaging calibration plate provided by the invention; fig. 4 is a partially enlarged view of fig. 3.
The invention provides a calibration system of an AR HUD imaging calibration plate, which comprises:
a detection stage 1;
two laser range finders 2 arranged on the detection bench 1;
a calibration vehicle 3 opposite to the detection stage 1;
the light-transmitting pore plate 4 is arranged on the calibration vehicle 3, and one side end surface of the light-transmitting pore plate is opposite to the two laser range finders;
the laser calibration plate 5 is arranged on the calibration vehicle 3 and is opposite to the end face of the other side of the light-transmitting pore plate 4;
the position adjusting device 6 is arranged on the calibration vehicle 3 and used for adjusting the position of the calibration vehicle; and
and the camera position calibration plate 7 is arranged on the calibration vehicle 3 and used for installing an industrial camera.
The position adjusting device 6 may be various, in this embodiment, the position adjusting device includes an X-axis adjusting mechanism (not shown), a Y-axis adjusting mechanism (not shown), and a Z-axis adjusting mechanism (not shown), and the X-axis adjusting mechanism, the Y-axis adjusting mechanism, and the Z-axis adjusting mechanism are independent from each other and do not interfere with each other.
The X-axis adjusting mechanism, the Y-axis adjusting mechanism and the Z-axis adjusting mechanism respectively comprise a ball screw guide rail, a locking device and a driving handle for driving the ball screw to rotate. After the calibration trolley is adjusted independently in one direction, the position of the calibration trolley in the direction can be locked through the locking device. In this embodiment, the driving handle is a knob or a wheel. In particular, the drive handle is a knob.
The invention also provides a use method of the calibration system of the AR HUD imaging calibration plate, which comprises the following steps:
1) Firstly, the calibration vehicle 3 moves to an approximate position, is opposite to the laser range finder 2, and starts the laser range finder 2;
2) Then, observing a light-transmitting hole plate 4 on the calibration vehicle 3, looking up the light beam position of the laser range finder at the moment, and shifting the position adjusting device 6 if the two laser beams are not in the circular hole range of the laser calibration plate, so as to ensure that the two laser beams pass through the light-transmitting hole plate 4 and irradiate at the circular hole of the rear laser calibration plate 5, and when the two laser beams are in the circular hole range of the laser calibration plate, the position calibration of the calibration vehicle can be ensured to be completed;
3) And finally, the industrial camera can be opened to calibrate the shooting position of the camera, and after the calibration of the camera position is completed, a series of AR HUD optical item tests can be carried out.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
- Calibration system of AR HUD formation of image calibration board, its characterized in that includes:a detection bench;the two laser range finders are arranged on the detection rack;the calibration vehicle is opposite to the detection rack;the light-transmitting pore plate is arranged on the calibration vehicle, and one side end surface of the light-transmitting pore plate is opposite to the two laser range finders;the laser calibration plate is arranged on the calibration vehicle and is opposite to the end face of the other side of the light-transmitting pore plate;the position adjusting device is arranged on the calibration vehicle and used for adjusting the position of the calibration vehicle; andthe camera position calibration plate is arranged on the calibration vehicle and used for mounting an industrial camera;the position adjusting device comprises an X-axis adjusting mechanism, a Y-axis adjusting mechanism and a Z-axis adjusting mechanism, and the X-axis adjusting mechanism, the Y-axis adjusting mechanism and the Z-axis adjusting mechanism are mutually independent and do not interfere with each other.
- 2. The system of claim 1, wherein the X-axis adjustment mechanism, the Y-axis adjustment mechanism, and the Z-axis adjustment mechanism each comprise a ball screw guide, a locking device, and a driving handle for driving the ball screw to rotate.
- 3. The calibration system for an AR HUD imaging calibration plate according to claim 2, wherein said driving handle is a knob or wheel.
- The use method of the calibration system of the AR HUD imaging calibration plate is characterized by comprising the following steps:1) Firstly, the calibration vehicle moves to an approximate position, is opposite to the laser range finder, and starts the laser range finder;2) Observing a light-transmitting pore plate on the calibration vehicle at the moment, looking up the light beam position of the laser range finder at the moment, and shifting the position adjusting device if the two laser beams are not in the circular hole range of the laser calibration plate, so as to ensure that the two laser beams pass through the light-transmitting pore plate to irradiate the circular hole position of the rear laser calibration plate, and ensure that the calibration of the position of the calibration vehicle is completed when the two laser beams are in the circular hole range of the laser calibration plate;3) Finally, the industrial camera can be opened to calibrate the shooting position of the camera, and after the calibration of the camera position is completed, a series of AR HUD optical item tests can be performed;the position adjusting device comprises an X-axis adjusting mechanism, a Y-axis adjusting mechanism and a Z-axis adjusting mechanism, and the X-axis adjusting mechanism, the Y-axis adjusting mechanism and the Z-axis adjusting mechanism are mutually independent and do not interfere with each other.
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