CN108195398A - A kind of complex configuration into the in-orbit geometric calibration device of image sensor - Google Patents
A kind of complex configuration into the in-orbit geometric calibration device of image sensor Download PDFInfo
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- CN108195398A CN108195398A CN201711220697.3A CN201711220697A CN108195398A CN 108195398 A CN108195398 A CN 108195398A CN 201711220697 A CN201711220697 A CN 201711220697A CN 108195398 A CN108195398 A CN 108195398A
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- image sensor
- background board
- coding maker
- geometric calibration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
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- Radar, Positioning & Navigation (AREA)
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Abstract
A kind of complex configuration into the in-orbit geometric calibration device of image sensor, be related into the in-orbit geometric calibration technical field of image sensor；Including background board, common mark, coding maker and mechanical interface；Wherein background board is the agent structure of device, for providing antiradar reflectivity light echo background, and target is kept to stablize；Common mark and coding maker are distributed according to certain intervals on background board, with identifier space point position；Mechanical interface installation for device and fastening；The present invention provides a set of device being suitable for into the in-orbit geometric calibration of image sensor, the device can provide under the conditions of in-orbit certain amount, known to spatial information, high-visible, reliable and stable imageable target, considerably increase the available Given information of sensor on-orbit calibration so that the complexity of the on-orbit calibration process of sensor reduces, stated accuracy and reliability improve.
Description
Technical field
The present invention relates to a kind of into the in-orbit geometric calibration field of image sensor, the imaging sensitivity of particularly a kind of complex configuration
The in-orbit geometric calibration device of device.
Background technology
In-orbit geometric calibration device is into the key equipment of image sensor on-orbit calibration, size, material, target configuration,
The elements such as process of surface treatment and stability determine into the complexity of the in-orbit geometric calibration scheme of image sensor, stated accuracy
And reliability.
The in-orbit geometric calibration unit configuration used at present is simple, and target is single, and quantity is few, can only provide limited constraint
Information is used for into image sensor on-orbit calibration, and stability of the device under complicated power, thermal environment is poor so that the in-orbit mark of sensor
Determine complicated process, stated accuracy and reliability to be difficult to ensure that.
Invention content
It is an object of the invention to overcome the above-mentioned deficiency of the prior art, a kind of existing into image sensor for complex configuration is provided
Rail geometric calibration device, the imageable target for having higher stability, certain amount high-visible, uniform background, using just
Profit reduces the complexity of the in-orbit geometric calibration of sensor, ensure that stated accuracy and reliability.Device is simple, easy to process
And manufacture.
The above-mentioned purpose of the present invention is achieved by following technical solution：
A kind of complex configuration into the in-orbit geometric calibration device of image sensor, including background board, common mark, coding maker
And mechanical interface；Wherein, background board is circular plate structure；Common mark and coding maker are distributed in the entire back of the body at regular intervals
On scape plate, mechanical interface is located at background board edge.
In a kind of above-mentioned complex configuration into the in-orbit geometric calibration device of image sensor, the realization of background board size is being waited to mark
Determine to cover sensor visual field at the optimal imaging distance of image sensor；Common mark and coding maker are circular configuration, commonly
Mark and coding maker size realize it is to be calibrated into image sensor optimal imaging apart from upper spot diameter be 10 pixel~20
Pixel.
In a kind of above-mentioned complex configuration into the in-orbit geometric calibration device of image sensor, background board is with commonly indicating, compiling
Code mark is an integral structure, and background board, common mark, coding maker are aluminum alloy material.
In a kind of above-mentioned complex configuration into the in-orbit geometric calibration device of image sensor, except common mark, coding maker
Outside, background plate surface is handled for delustring, and absorptivity is not less than 90%；Common mark and coding maker surface spray white paint processing.
In a kind of above-mentioned complex configuration into the in-orbit geometric calibration device of image sensor, common mark and coding maker are each
5 times into spot diameter at image sensor optimal imaging distance to be calibrated are divided between point between point.
In a kind of above-mentioned complex configuration into the in-orbit geometric calibration device of image sensor, a diameter of 140- of background board
160mm。
In a kind of above-mentioned complex configuration into the in-orbit geometric calibration device of image sensor, the common mark is according to pros
Shape mode is evenly distributed on the surface of background board；The two neighboring spacing commonly indicated is 15-20mm.
In a kind of above-mentioned complex configuration into the in-orbit geometric calibration device of image sensor, the coding maker quantity is many
In 4；One of coding maker is located at the center of background board；Other coding makers are to be located at background board center
Centered on coding maker, radiuses is waited uniformly to circularize distribution；Distance of other coding makers away from centre code mark is 45-
50mm。
The present invention has the following advantages that compared with prior art：
(1) in the present invention, using the aluminum alloy materials that density is small, yield strength is high, mechanical performance is good, by by background
Plate and common mark, coding maker carry out integrated design and processing, ensure that in-orbit geometric calibration device can answer on star
It is provided under miscellaneous power, thermal environment and stablizes constant target and be used as with reference to benchmark for being imaged sensor calibration, device is stable, can
It leans on, improves into the reliability of the in-orbit geometric calibration of image sensor；
(2) in the present invention, background board carries out delustring processing, and white paint is sprayed on common mark and coding maker surface so that the dress
Putting can coat, under conditions of imaging circumstances complexity in on-board equipment, provide uniform imaging background and clearly imageable target,
Good image quality ensure that into the Centroid accuracy that image sensor observation mark sets the goal, so as to ensure that its in-orbit geometric calibration
Precision；
(3) in the present invention, common mark, the size of coding maker and spaced design are fully considered so that device can be
Under conditions of resource is limited on star, multiple reflectance targets are provided and are used for into the in-orbit geometric calibration of image sensor, a large amount of index point
The complexity of on-orbit calibration process is reduced, ensure that into the in-orbit geometric calibration precision of image sensor；
(4) in the present invention, using coding point design, the data processing effect of the in-orbit geometric calibration of image sensor is improved into
Rate so that on-orbit calibration algorithm is easily achieved.
Description of the drawings
Fig. 1 is the in-orbit geometric calibration schematic device of the present invention.
Specific embodiment
The present invention is described in further detail in the following with reference to the drawings and specific embodiments：
The object of the present invention is to provide a kind of new complex configurations into the in-orbit geometric calibration device of image sensor, the device
Can provide under the conditions of in-orbit certain amount, known to spatial information, high-visible, reliable and stable imageable target, increase
The available Given information of sensor on-orbit calibration is added so that the complexity of the on-orbit calibration process of sensor reduces, calibration
Precision and reliability improve.
It is as shown in Figure 1 in-orbit geometric calibration schematic device, as seen from the figure, a kind of complex configuration exists into image sensor
Rail geometric calibration device includes background board 1, common mark 2, coding maker 3 and mechanical interface 4；Wherein, common mark 2 and coding
Mark 3 is distributed at regular intervals on entire background board, and mechanical interface is located at background board edge；1 a diameter of 140- of background board
160mm。。
Background board 1 is circular configuration, and size can ensure to cover at the optimal imaging distance to be calibrated into image sensor
Sensor visual field；Common mark 2 and coding maker 3 are circular configuration, size can ensure it is to be calibrated into image sensor best
Spot diameter on image-forming range is the pixel of 10 pixels~20.
Background board 1 is an integral structure with common mark 2, coding maker 3, background board 1, common mark 2, coding maker 3
For aluminum alloy material.
In addition to common mark 2, coding maker 3,1 surface of background board is handled for delustring, and absorptivity is not less than 90%；Common mark
Will 2 and 3 surface of coding maker spray white paint processing.
It is divided between point between common 3 each point of mark 2 and coding maker to be calibrated at image sensor optimal imaging distance
5 times of spot diameter.
Wherein, common mark 2 is evenly distributed on the surface of background board 1 according to square mode；Two neighboring common mark 2
Spacing be 15-20mm.
3 quantity of coding maker is no less than 4；One of coding maker 3 is located at the center of background board 1；Other volumes
Code mark 3 waits radiuses uniformly to circularize distribution centered on being located at the coding maker 3 of 1 center of background board；Other coding marks
Distance of the will 3 away from centre code mark is 45-50mm.
The content not being described in detail in description of the invention belongs to the known technology of those skilled in the art.
Claims (8)
1. a kind of complex configuration into the in-orbit geometric calibration device of image sensor, it is characterised in that：Including background board (1), commonly
Indicate (2), coding maker (3) and mechanical interface (4)；Wherein, background board (1) is circular plate structure；Common mark (2) and volume
Code mark (3) is distributed at regular intervals on entire background board (1), and mechanical interface (4) is positioned at background board (1) edge.
2. a kind of complex configuration according to claim 1 into the in-orbit geometric calibration device of image sensor, it is characterised in that：
Background board (1) size is realized covers sensor visual field at the optimal imaging distance to be calibrated into image sensor；Common mark (2)
Be circular configuration with coding maker (3), it is common indicate the realization of (2) and coding maker (3) size it is to be calibrated into image sensor most
Spot diameter on good image-forming range is the pixel of 10 pixels~20.
3. a kind of complex configuration according to claim 1 into the in-orbit geometric calibration device of image sensor, it is characterised in that：
Background board (1) is an integral structure with common mark (2), coding maker (3), background board (1), common mark (2), coding maker
(3) it is aluminum alloy material.
4. a kind of complex configuration according to claim 1 into the in-orbit geometric calibration device of image sensor, it is characterised in that：
In addition to commonly mark (2), coding maker (3), background board (1) surface is handled for delustring, and absorptivity is not less than 90%；Common mark
(2) it is handled with coding maker (3) surface spray white paint.
5. a kind of complex configuration according to claim 1 into the in-orbit geometric calibration device of image sensor, it is characterised in that：
It is divided between point between common mark (2) and coding maker (3) each point to be calibrated into hot spot at image sensor optimal imaging distance
5 times of diameter.
6. a kind of complex configuration according to claim 1 into the in-orbit geometric calibration device of image sensor, it is characterised in that：
Background board (1) a diameter of 140-160mm.
7. a kind of complex configuration according to claim 1 into the in-orbit geometric calibration device of image sensor, it is characterised in that：
The common mark (2) is evenly distributed on the surface of background board (1) according to square mode；Two neighboring common mark (2)
Spacing is 15-20mm.
8. a kind of complex configuration according to claim 1 into the in-orbit geometric calibration device of image sensor, it is characterised in that：
Coding maker (3) quantity is no less than 4；One of coding maker (3) is positioned at the center of background board (1)；It is other
Coding maker (3) waits radiuses uniformly to circularize distribution centered on being located at the coding maker (3) of background board (1) center；Its
Its distance of coding maker (3) away from centre code mark is 45-50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711220697.3A CN108195398B (en) | 2017-11-29 | 2017-11-29 | Imaging sensor in-orbit geometric calibration device with complex configuration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711220697.3A CN108195398B (en) | 2017-11-29 | 2017-11-29 | Imaging sensor in-orbit geometric calibration device with complex configuration |
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| CN108195398A true CN108195398A (en) | 2018-06-22 |
| CN108195398B CN108195398B (en) | 2020-06-09 |
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| CN101727670A (en) * | 2009-11-10 | 2010-06-09 | 西安交通大学 | Flexible calibrating method and device for variable-format multiple-camera system |
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| US20120327214A1 (en) * | 2011-06-21 | 2012-12-27 | HNJ Solutions, Inc. | System and method for image calibration |
| CN104217429A (en) * | 2014-08-25 | 2014-12-17 | 太仓中科信息技术研究院 | Design and detection method of camera calibration board |
| CN104851104A (en) * | 2015-05-29 | 2015-08-19 | 大连理工大学 | Flexible-target-based close-range large-field-of-view calibrate method of high-speed camera |
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2017
- 2017-11-29 CN CN201711220697.3A patent/CN108195398B/en active Active
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| CN101876555A (en) * | 2009-11-04 | 2010-11-03 | 北京控制工程研究所 | Lunar rover binocular vision navigation system calibration method |
| CN101727670A (en) * | 2009-11-10 | 2010-06-09 | 西安交通大学 | Flexible calibrating method and device for variable-format multiple-camera system |
| CN201803731U (en) * | 2010-09-26 | 2011-04-20 | 郑州辰维科技股份有限公司 | Star sensor calibration equipment |
| US20120327214A1 (en) * | 2011-06-21 | 2012-12-27 | HNJ Solutions, Inc. | System and method for image calibration |
| CN104217429A (en) * | 2014-08-25 | 2014-12-17 | 太仓中科信息技术研究院 | Design and detection method of camera calibration board |
| CN104851104A (en) * | 2015-05-29 | 2015-08-19 | 大连理工大学 | Flexible-target-based close-range large-field-of-view calibrate method of high-speed camera |
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