CN204287725U - Gridiron pattern is adopted to demarcate the device of visible ray and thermal infrared imager camera - Google Patents
Gridiron pattern is adopted to demarcate the device of visible ray and thermal infrared imager camera Download PDFInfo
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- CN204287725U CN204287725U CN201420686430.9U CN201420686430U CN204287725U CN 204287725 U CN204287725 U CN 204287725U CN 201420686430 U CN201420686430 U CN 201420686430U CN 204287725 U CN204287725 U CN 204287725U
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- infrared imager
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Abstract
The utility model discloses a kind of device adopting gridiron pattern to demarcate visible ray and thermal infrared imager camera, first the chessboard calibration plate be made up of optical glass is chosen, described chessboard calibration plate is provided with black square and white square on the surface, insulating moulding coating layer is scribbled in described black square region, choose heating material flitch and the intermediate connector of white, three is connected from top to bottom successively, heating material flitch is connected with heating arrangement; Secondly angle and the position of chessboard calibration plate is constantly converted, all keep static after each conversion, take caliberating device by Visible Light Camera and thermal infrared imager simultaneously, in visible images and infrared image, clearly can both extract the Corner Feature point picpointed coordinate in image accurately, utilize known point coordinate can complete combined calibrating fast, obtain the camera parameter of Visible Light Camera and thermal infrared imager.The utility model utilizes same set of caliberating device and scaling method to determine parameter that is infrared and Visible Light Camera simultaneously, very succinctly, efficiently.
Description
technical field:
The utility model relates to a kind of camera calibration device, particularly relates to a kind of device adopting gridiron pattern to demarcate visible ray and thermal infrared imager camera.
background technology:
In the application such as multispectral photography measurement, remote sensing and targeted surveillance, for comprehensively obtaining the Spectral Radiation Information of object, often take the method for multispectral combined measurement.Wherein, Visible Light Camera can obtain abundant texture information, and thermal infrared imager can obtain temperature information.Therefore, the combined measurement of current Visible Light Camera and infrared camera is applied widely.And when infrared camera and Visible Light Camera do not share same camera lens or same optical path, just strictly their camera intrinsic parameter and the relative position and attitude between them must be demarcated.Determine that three-dimensional geometry position of certain point of space object surface and the geometric model parameter of its mutual relationship in the picture between corresponding point are exactly camera parameter.Utilize caliberating device and scaling method to determine that the process of these parameters is just called camera calibration.In prior art, the method feature simple to operate with it, rapidly and efficiently utilizing gridiron pattern to carry out camera calibration has played vital role in actual photogrammetric engineering application, but traditional gridiron pattern scaling board is only effective to the demarcation of Visible Light Camera, is difficult to play a role in the demarcation of thermal infrared imager because common gridiron pattern scaling board does not have obvious temperature contrast.
utility model content:
Technical problem to be solved in the utility model is: overcome the deficiencies in the prior art, provides a kind of enforcement reasonable in design, easy, can demarcate the device that the employing gridiron pattern of two kinds of cameras demarcates visible ray and thermal infrared imager camera simultaneously.
The technical solution of the utility model is:
A kind of device adopting gridiron pattern to demarcate visible ray and thermal infrared imager camera, comprise chessboard calibration plate, the surface of described chessboard calibration plate is provided with the black square and white square that are arranged alternately with each other, described black square and white square are square, insulating moulding coating layer is scribbled in described black square region, described chessboard calibration plate is connected by the heating material flitch of intermediate connector with white, and described heating material flitch is connected with heating arrangement; Described chessboard calibration plate is made up of optical glass.
Described heating arrangement adopts Electric heating, and is controlled time and the temperature of described heating arrangement by controller.
The heating material flitch of described white adopts semiconductor chilling plate or ceramic infrared radiation electric hot plate to make, and described intermediate connector is made up of heat-barrier material, is column, is disposed between chessboard calibration plate and heating material flitch; But described optical glass adopts the material absorbing heat ability lower to make, and does not absorb heat through heat, can have an X-rayed the color of heating material plate, is convenient to demarcate.
The beneficial effects of the utility model are:
1, the utility model utilizes same set of caliberating device to determine parameter that is infrared and Visible Light Camera simultaneously, utilize the camera parameter that combined calibrating obtains, the space reference of thermal infrared imager and camera can be unified, for multispectral fusion and combined measurement set up basis, very succinct, efficiently.
2, the utility model utilizes gridiron pattern scaling board to make Visible Light Camera consistent, simple and easy to do with the flow process of carrying out separately Visible Light Camera demarcation with the flow process of thermal infrared imager combined calibrating; Utilize gridiron pattern standardization, in visible images and infrared image, clearly can both extract the Corner Feature point picpointed coordinate in image accurately, thus complete combined calibrating fast, obtain the camera parameter of Visible Light Camera and thermal infrared imager.
3, the utility model white heating material flitch can use the material such as semiconductor chilling plate or ceramic infrared radiation electric hot plate to make, the heating process of these materials and add heat energising can be utilized accurately to control, good integrity, Heat stability is good, temperature is also relatively more even, is applicable to becoming good infrared origin.
4, the utility model intermediate connector adopts heat-barrier material to make, can prevent the heat of heating material flitch from conducting to optical flat by middle connecting piece, its similar, in support, makes heating material flitch and optical flat maintain a certain distance, good heat-insulation effect.
5, the utility model adopts the chessboard calibration plate of optical glass producing to be the checkerboard fashion that black and white is alternately arranged, no matter black square or white square all sized by identical square, and the black lattice region on optical flat surface scribbles insulating moulding coating, also adiathermance of neither absorbing heat; But optical flat adopts and absorbs the lower material of heat ability, does not absorb heat through heat, can have an X-rayed the color of heating material plate, is convenient to demarcate.
6, the utility model enforcement reasonable in design, easy, can demarcate two kinds of cameras, its applied range, is easy to promotion and implementation, has good economic benefit simultaneously.
accompanying drawing illustrates:
Fig. 1 is the structural representation adopting gridiron pattern to demarcate the device of visible ray and thermal infrared imager camera;
Fig. 2 is the distribution plan of intermediate connector in Fig. 1.
embodiment:
Embodiment: see Fig. 1-Fig. 2, in figure, 1-chessboard calibration plate, 2-intermediate connector, 3-heating material flitch.
Gridiron pattern is adopted to demarcate the device of visible ray and thermal infrared imager camera, comprise chessboard calibration plate 1, the surface of chessboard calibration plate 1 is provided with the black square be arranged alternately with each other and white square, black square and white square are square, wherein: in black square region, scribble insulating moulding coating layer, chessboard calibration plate 1 is connected by the heating material flitch 3 of intermediate connector 2 with white, and heating material flitch 3 is connected with heating arrangement (not shown in FIG.); Chessboard calibration plate 1 is made up of optical glass.
Heating arrangement adopts Electric heating, and is controlled time and the temperature of heating arrangement by controller.The heating material flitch 3 of white adopts semiconductor chilling plate or ceramic infrared radiation electric hot plate to make, good integrity, Heat stability is good, temperature is also relatively more even, is applicable to becoming good infrared origin.Intermediate connector 2 is made up of heat-barrier material, for column, be disposed between chessboard calibration plate 1 and heating material flitch 3, solar radiation absorbility factor and the coefficient of heat conductivity of these materials are lower, conduct to optical flat to prevent the heat of exothermic material plate by middle connecting piece.But optical glass adopts the material absorbing heat ability lower to make, and does not absorb heat through heat, can have an X-rayed the color of heating material plate, is convenient to demarcate.
Carry out timing signal, take chessboard calibration plate by Visible Light Camera and thermal infrared imager simultaneously, the image that Visible Light Camera photographs is chequered with black and white gridiron pattern pattern, and the image of infrared camera shooting is consistent with visible images.
The angle of continuous conversion chessboard calibration plate and position, all keep static after each conversion, take caliberating device by Visible Light Camera and thermal infrared imager simultaneously, take abundant photo, in visible images and infrared image, clearly can both extract the Corner Feature point picpointed coordinate in image accurately, utilize known point coordinate, recycle current camera calibration method and can complete combined calibrating fast, obtain the camera parameter of Visible Light Camera and thermal infrared imager.
Similar under the image obtained under the condition that the gridiron pattern scaling board that the utility model provides is taken at thermal infrared imager and visible light conditions, is in white and black cross-hatch pattern picture, therefore, it is possible to realize the combined calibrating of thermal infrared imager and Visible Light Camera.Utilize this chessboard calibration plate, make Visible Light Camera consistent with the flow process of carrying out separately Visible Light Camera demarcation with the flow process of thermal infrared imager (infrared camera) combined calibrating.Utilize gridiron pattern standardization, in visible images and infrared image, clearly can both extract the Corner Feature point picpointed coordinate in image accurately, thus complete combined calibrating fast, obtain the camera parameter of Visible Light Camera and thermal infrared imager.
The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, every above embodiment is done according to technical spirit of the present utility model any simple modification, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (3)
1. the device adopting gridiron pattern to demarcate visible ray and thermal infrared imager camera, comprise chessboard calibration plate, the surface of described chessboard calibration plate is provided with the black square and white square that are arranged alternately with each other, described black square and white square are square, it is characterized in that: in described black square region, scribble insulating moulding coating layer, described chessboard calibration plate is connected by the heating material flitch of intermediate connector with white, and described heating material flitch is connected with heating arrangement; Described chessboard calibration plate is made up of optical glass.
2. employing gridiron pattern according to claim 1 demarcates the device of visible ray and thermal infrared imager camera, it is characterized in that: described heating arrangement adopts Electric heating, and is controlled time and the temperature of described heating arrangement by controller.
3. employing gridiron pattern according to claim 1 demarcates the device of visible ray and thermal infrared imager camera, it is characterized in that: the heating material flitch of described white adopts semiconductor chilling plate or ceramic infrared radiation electric hot plate to make, described intermediate connector is made up of heat-barrier material, for column, be disposed between chessboard calibration plate and heating material flitch; But described optical glass does not absorb heat through heat, can have an X-rayed the color of heating material plate, is convenient to demarcate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420686430.9U CN204287725U (en) | 2014-11-17 | 2014-11-17 | Gridiron pattern is adopted to demarcate the device of visible ray and thermal infrared imager camera |
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| CN201420686430.9U CN204287725U (en) | 2014-11-17 | 2014-11-17 | Gridiron pattern is adopted to demarcate the device of visible ray and thermal infrared imager camera |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107067442A (en) * | 2017-06-07 | 2017-08-18 | 云南师范大学 | A kind of infrared scaling board synchronous with visible ray dual camera |
| CN107884073A (en) * | 2017-10-19 | 2018-04-06 | 中车青岛四方机车车辆股份有限公司 | Gridiron pattern calibration facility |
| RU2672466C1 (en) * | 2017-12-22 | 2018-11-14 | Акционерное общество "Государственный Рязанский приборный завод" | Test pattern for calibration of video sensors of multispectral vision system |
| RU2719429C1 (en) * | 2019-06-13 | 2020-04-17 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Рязанский государственный радиотехнический университет" | Test object for simultaneous calibration of television and infrared video cameras with different fields of view |
| CN112465919A (en) * | 2020-12-04 | 2021-03-09 | 中国科学院重庆绿色智能技术研究院 | Infrared thermal imaging camera calibration device |
| RU204909U1 (en) * | 2020-12-14 | 2021-06-17 | Федеральное государственное автономное образовательное учреждение высшего образования "Санкт-Петербургский государственный электротехнический университет "ЛЭТИ" им. В.И. Ульянова (Ленина)" | Test object |
| CN116416319A (en) * | 2022-11-17 | 2023-07-11 | 南京理工大学 | Intelligent driving multi-type sensor calibration-oriented one-time combined calibration method |
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2014
- 2014-11-17 CN CN201420686430.9U patent/CN204287725U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107067442A (en) * | 2017-06-07 | 2017-08-18 | 云南师范大学 | A kind of infrared scaling board synchronous with visible ray dual camera |
| CN107067442B (en) * | 2017-06-07 | 2023-08-15 | 云南师范大学 | Infrared and visible light double-camera synchronous calibration plate |
| CN107884073A (en) * | 2017-10-19 | 2018-04-06 | 中车青岛四方机车车辆股份有限公司 | Gridiron pattern calibration facility |
| RU2672466C1 (en) * | 2017-12-22 | 2018-11-14 | Акционерное общество "Государственный Рязанский приборный завод" | Test pattern for calibration of video sensors of multispectral vision system |
| RU2719429C1 (en) * | 2019-06-13 | 2020-04-17 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Рязанский государственный радиотехнический университет" | Test object for simultaneous calibration of television and infrared video cameras with different fields of view |
| CN112465919A (en) * | 2020-12-04 | 2021-03-09 | 中国科学院重庆绿色智能技术研究院 | Infrared thermal imaging camera calibration device |
| CN112465919B (en) * | 2020-12-04 | 2024-02-23 | 中国科学院重庆绿色智能技术研究院 | Infrared thermal imaging camera calibration device |
| RU204909U1 (en) * | 2020-12-14 | 2021-06-17 | Федеральное государственное автономное образовательное учреждение высшего образования "Санкт-Петербургский государственный электротехнический университет "ЛЭТИ" им. В.И. Ульянова (Ленина)" | Test object |
| CN116416319A (en) * | 2022-11-17 | 2023-07-11 | 南京理工大学 | Intelligent driving multi-type sensor calibration-oriented one-time combined calibration method |
| CN116416319B (en) * | 2022-11-17 | 2023-11-24 | 南京理工大学 | Intelligent driving multi-type sensor calibration-oriented one-time combined calibration method |
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