WO2015149781A1 - Vorrichtung zur kalibrierung eines kamerasystems - Google Patents
Vorrichtung zur kalibrierung eines kamerasystems Download PDFInfo
- Publication number
- WO2015149781A1 WO2015149781A1 PCT/DE2015/200165 DE2015200165W WO2015149781A1 WO 2015149781 A1 WO2015149781 A1 WO 2015149781A1 DE 2015200165 W DE2015200165 W DE 2015200165W WO 2015149781 A1 WO2015149781 A1 WO 2015149781A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- webs
- calibration
- lines
- vehicle
- air
- 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.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/04—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
- G01B21/042—Calibration or calibration artifacts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates
Definitions
- the invention relates to a device for calibrating a camera system, in particular a surround view camera ⁇ system of a vehicle.
- the camera systems it may be, in particular so-called all-round view camera systems act, are in which acquires image data by means of a plurality of arranged on the vehicle cameras of differing ⁇ chen region of the vehicle environment and assembled in an image processing process to form an overall image of the driving ⁇ imaging environment, in particular to an all-round visibility - Or to a so-called top view presentation, ie to a representation of the vehicle environment from a bird's eye view.
- Such camera systems are also referred to as surround view or top view systems.
- the calibration of the camera systems is performed automatic ⁇ table generally and, for example, the tape-end SUC ⁇ gen, that is one of the last process steps in the manufacture of vehicle (end of line calibration).
- the calibration takes place independently of the vehicle production after mounting the camera system.
- Calibration pattern are known for example from DE 10 2005 035 678 and DE 10 2007 021 106.
- the object of the invention is therefore to provide an improved Vorrich ⁇ device for calibrating a camera system, in particular for a surround view system.
- An essential concept of the invention is to provide a device for calibrating a camera system of a vehicle which is designed to be mobile, i. as light and portable as possible, while allowing a sufficiently precise calibration.
- the device according to the invention serves to calibrate a camera system of a vehicle, in particular a road, air or water vehicle, which comprises a camera system.
- the camera system is preferably a surround view system.
- the device comprises a plurality of elongated webs, preferably of fabric or of a fabric, in ⁇ example of textile or plastic or of a plastic fabric.
- the apparatus is further particular ⁇ art designed such that they can be arranged on any surface.
- the device is particularly so formed from ⁇ that these can be arranged on a surface below or around the vehicle, preferably on a flat bottom surface or on a water surface. If If the vehicle is a road vehicle, it may be provided that the device according to the invention is first arranged on the surface and the vehicle is subsequently moved over the device and placed over it.
- Significant advantages of the device according to the invention are that it can be made particularly lightweight and robust, and is easy to transport.
- the webs of the device according to the invention are designed such that they form a calibration pattern on the surface together after the arrangement.
- the device can be both one-piece, i. in particular with interconnected webs, or even in several parts, i. with separate webs, be formed.
- the device can be configured either with webs that are firmly connected to one another or with webs that can be transported and arranged separately.
- the calibration pattern is preferably a grid pattern.
- the grid pattern comprises in particular a plurality of parallel lines which extend at right angles to one another and extend in at least two spatial directions.
- the lines can be integrally ⁇ assigns, for example, also in pairs.
- the distance between individual lines or line pairs is preferably at least 1500 mm and, for example, up to 2000 mm.
- the elongated paths of the device itself can form the calibration pattern, ie, for example, the lines of a grid pattern.
- additional lines are formed or applied on the webs, for example by means of ink or printing technology, in which case the lines of the plurality of webs together form the calibration pattern.
- the webs of the device according to the invention are furthermore preferably designed as thin fabric webs, in particular with a thickness or height of less than 5 mm. As a result, the device has no significant height relative to the ground, which is particularly advantageous for the calibration of camera systems.
- the webs are formed from an air-impermeable plastic material and have air chambers for the inlet and outlet of air.
- This embodiment has the main advantages that the apparatus on the water and thus can be used for calibration of a camera system of a water ⁇ vehicle. Unevenness of the floor can be compensated and the device or webs can align themselves when the air is admitted.
- the webs can either be designed such that they are individually fillable with closeable valves with air or ⁇ style , especially if the webs are connected to each other, that air chambers are also connected to each other and can be filled via a common closable valve with air.
- the lines of the grid pattern preferably have a width between 50 and 100 mm.
- a width of in particular 50 mm has proved to be advantageous for larger vehicles, wherein ⁇ play, in the calibration of a camera system of a truck, a width of preferably 100 mm.
- the lines of the grid pattern are preferably formed as white or at least bright lines, that is, for example, the webs of egg ⁇ nem bright or white plastic to be formed or it can white or bright lines are applied to the tracks.
- the webs of the device according to the invention can in particular also be formed of a black or at least dark material and the lines of the grating pattern as white or at least bright Li ⁇ lines be applied to the tracks, and vice versa.
- Figure 1 shows an embodiment of the device according to the invention with black plastic sheets and white lines for calibration of a camera system of a road vehicle.
- Figure 2 shows an embodiment of the device according to the invention with white plastic sheets and black lines for calibration of a camera system of a watercraft.
- 1 shows an advantageous embodiment of the inventive device for calibrating a camera system of a vehicle 1 is shown.
- the vehicle 1 in this case is a truck with a tractor and a trailer.
- the camera system can be, for example, a so-called surround view system in which a plurality of individual cameras are arranged on or in the vehicle 1, which capture image data from different areas of the surroundings of the vehicle 1.
- these image data are then usually processed by means of suitable image processing means such that an overall image of the vehicle environment is generated from the image data, which is indicated to the driver and / or can be further processed for various driver assistance functions.
- model parameters of the camera system are known. These model parameters are, for example, a position, an installation position or a mechanical or optical structure of one or more cameras of the camera system. These model parameters are determined in the calibration process.
- the model parameters distinguish between extrinsic and intrinsic parameters. Extrinsic parameters are in particular all parameters which describe the installation position and position of the cameras of a camera system. Intrinsic parameters describe system-internal parameters of camera imaging systems. For example, the main point of a camera is such an intrinsic parameter and represents a center of optical imaging on the imager or imager of the camera.
- the Inventive ⁇ contemporary apparatus for calibration of a camera system of a vehicle 1 a plurality of elongated tracks 3, which can be arranged on a top ⁇ surface 2, that is which can be arranged on a preferably planar surface under the vehicle 1, for example on a road or road surface or generally on a level and solid ground on which or on which the vehicle 1 can be moved and parked.
- the plurality of elongate webs 3 are arranged in pairs in the illustrated example and, during or after their arrangement on the surface 2, form a calibration pattern for the calibration of the camera system of the vehicle 1 which is known per se and has been described above.
- the elongate webs 3 may be, for example, thin, ie flat, fabric or plastic webs, for example with a width of about 20 cm and a thickness of less than 5 mm.
- white lines 4 are applied to the webs 3.
- the lines 4 may be printed on the webs 3 or applied in any other suitable manner.
- the lines 4 extend preferably over virtually the entire length of the tracks 3 and preferably have a constant width, which is sufficient for the calibration of the anglesys ⁇ tems of the vehicle 1.
- the webs 3 may also be formed with a smaller width and without printed lines 4 and in particular themselves form the lines 4 of the calibration pattern.
- the calibration pattern is a grid pattern which forms the webs 3 or the lines 4 applied thereon in the arranged state, with parallel lines 4 in two spatial directions at right angles to one another.
- the inventive device can be designed either Purtei ⁇ lig thereby, ie, that is integrally connected or disconnected separately vonei ⁇ Nander formed lanes 3, webs or fixed to each other.
- the individual webs 3 must consequently be aligned parallel or at right angles to one another when they are arranged on the surface 2.
- suitable devices may be provided at the nodes 5, which serve as reference marks for the alignment and / or as fixing means for connecting the webs 3 together, for example push buttons, Velcro strips or other connecting means.
- the webs 3 for example, made of a single piece of fabric or plastic ⁇ fabric and / or configured firmly connected to each other, in particular with a permanent connection of the webs 3 at the nodes 5 of the calibration, for example by gluing or welding ,
- the webs 3 of the device formed of an air-impermeable plastic material and have along their length each air chambers for the intake and exhaust of air. This has the significant advantage that when you let air into the air chambers, an independent orientation of the webs 3 and thus the
- the device can be used on a water surface, insbeson ⁇ particular for calibrating a camera system of a water ride ⁇ zeugs.
- the device according to the invention can also be designed both in several parts or in one piece.
- the tracks 3 may in particular be formed so that these individual over ver ⁇ closable valves with air or with another gasför ⁇ -shaped medium, filled and before or after the intake of air preferably via suitable connection means at the nodes 5 of the Sampling pattern are connected.
- these are preferably at the node points of the calibration pattern 5 permanently MITEI ⁇ Nander connected.
- the air ⁇ chambers are also connected to each other, so that they form a common closed air chamber, which can be filled with air via a common closable valve.
- the connection of the webs 3 and the air chambers can be realized for example by means of welding or adhesive connection.
- the webs 3 are made of a black or dark material or with black or dark coloring.
- Kalibriermusters are preferably formed white or bright in the case.
- FIG. 2 shows a second advantageous embodiment of the inventive apparatus for calibration of a camera system of a vehicle 1 is shown, wherein the device is formed as at ⁇ in large parts corresponding to the description of FIG. 1
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Studio Devices (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112015001605.8T DE112015001605A5 (de) | 2014-04-01 | 2015-03-17 | Vorrichtung zur Kalibrierung eines Kamerasystems |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014206200.4A DE102014206200A1 (de) | 2014-04-01 | 2014-04-01 | Vorrichtung zur Kalibrierung eines Kamerasystems |
| DE102014206200.4 | 2014-04-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015149781A1 true WO2015149781A1 (de) | 2015-10-08 |
Family
ID=53274326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2015/200165 Ceased WO2015149781A1 (de) | 2014-04-01 | 2015-03-17 | Vorrichtung zur kalibrierung eines kamerasystems |
Country Status (2)
| Country | Link |
|---|---|
| DE (2) | DE102014206200A1 (de) |
| WO (1) | WO2015149781A1 (de) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005035678A1 (de) | 2005-07-27 | 2007-02-01 | Adc Automotive Distance Control Systems Gmbh | Vorrichtung zur Kalibrierung einer Kamera |
| DE102007021106A1 (de) | 2007-05-03 | 2008-11-06 | Adc Automotive Distance Control Systems Gmbh | Verfahren und Vorrichtung zum Kalibrieren eines Kamerasystems |
| US20100157569A1 (en) * | 2008-12-22 | 2010-06-24 | Anthony Vietro | Method of imaging a subject using a light diffusion balloon |
| WO2013074604A2 (en) * | 2011-11-15 | 2013-05-23 | Magna Electronics, Inc. | Calibration system and method for vehicular surround vision system |
| CN103593836A (zh) * | 2012-08-14 | 2014-02-19 | 无锡维森智能传感技术有限公司 | 一种摄像头参数计算方法及相机确定车体姿态的方法 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060023782A1 (en) * | 2004-07-27 | 2006-02-02 | Microsoft Corporation | System and method for off-line multi-view video compression |
| DE102006036933B4 (de) * | 2006-08-08 | 2024-01-11 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zur Erzeugung eines Gesamtbilds aus überlappenden Einzelbildern |
| JP4555876B2 (ja) * | 2008-05-30 | 2010-10-06 | 株式会社日本自動車部品総合研究所 | 車載カメラのキャリブレーション方法 |
| JP5491235B2 (ja) * | 2010-03-02 | 2014-05-14 | 東芝アルパイン・オートモティブテクノロジー株式会社 | カメラキャリブレーション装置 |
| US9491450B2 (en) * | 2011-08-01 | 2016-11-08 | Magna Electronic Inc. | Vehicle camera alignment system |
-
2014
- 2014-04-01 DE DE102014206200.4A patent/DE102014206200A1/de not_active Withdrawn
-
2015
- 2015-03-17 DE DE112015001605.8T patent/DE112015001605A5/de active Pending
- 2015-03-17 WO PCT/DE2015/200165 patent/WO2015149781A1/de not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005035678A1 (de) | 2005-07-27 | 2007-02-01 | Adc Automotive Distance Control Systems Gmbh | Vorrichtung zur Kalibrierung einer Kamera |
| DE102007021106A1 (de) | 2007-05-03 | 2008-11-06 | Adc Automotive Distance Control Systems Gmbh | Verfahren und Vorrichtung zum Kalibrieren eines Kamerasystems |
| US20100157569A1 (en) * | 2008-12-22 | 2010-06-24 | Anthony Vietro | Method of imaging a subject using a light diffusion balloon |
| WO2013074604A2 (en) * | 2011-11-15 | 2013-05-23 | Magna Electronics, Inc. | Calibration system and method for vehicular surround vision system |
| CN103593836A (zh) * | 2012-08-14 | 2014-02-19 | 无锡维森智能传感技术有限公司 | 一种摄像头参数计算方法及相机确定车体姿态的方法 |
Non-Patent Citations (1)
| Title |
|---|
| ROGER Y. TSAI: "An Efficient and Accurate Camera Calibration Technique for 3D Machine Vision", PROCEEDINGS OF IEEE.CONFERENCE ON COMPUTER VISION AND PATTERN RECOGNITION, 1986, pages 364 - 374 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102014206200A1 (de) | 2015-10-01 |
| DE112015001605A5 (de) | 2017-01-12 |
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