CN210571042U - Calibration device for infrared and visible light camera collaborative calibration - Google Patents
Calibration device for infrared and visible light camera collaborative calibration Download PDFInfo
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- CN210571042U CN210571042U CN201921611344.0U CN201921611344U CN210571042U CN 210571042 U CN210571042 U CN 210571042U CN 201921611344 U CN201921611344 U CN 201921611344U CN 210571042 U CN210571042 U CN 210571042U
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- 238000010438 heat treatment Methods 0.000 claims abstract description 50
- 239000000758 substrate Substances 0.000 claims abstract description 13
- 239000005329 float glass Substances 0.000 claims abstract description 9
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000741 silica gel Substances 0.000 claims description 6
- 229910002027 silica gel Inorganic materials 0.000 claims description 6
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- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 2
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 2
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- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 4
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Abstract
The utility model discloses a calibration device that is used for infrared and visible light camera to mark in coordination. Because the calibration plate made of aluminum can be imaged in the infrared camera after being heated and has clear checkerboard angular point information, the calibration device adopts alumina to manufacture the checkerboard plate and is attached to a flat float glass substrate to form a checkerboard layer, the checkerboard layer can be heated by a heating layer, the heating layer is encapsulated in a shell of the calibration plate and is controlled by a temperature control display module, and the temperature control display module is used for setting and displaying the temperature of the checkerboard; the LED lamp tubes are arranged on the periphery of the front face of the calibration device and are covered by the arc-shaped lamp covers, so that when the calibration plate is used in a dark environment, the LED lamps can be turned on to condense light on the checkerboard, and the brightness and the contrast are increased; the control of the heating temperature is realized, the infrared and visible light camera cooperative calibration is realized, the universality is increased, and the calibration precision is obviously improved.
Description
Technical Field
The invention relates to a calibration device for infrared and visible camera collaborative calibration, and belongs to the field of image processing equipment.
Background
Infrared thermal imaging detection technology has been widely used in many fields as a simple, nondestructive, non-contact detection technology, and people are increasingly researching infrared thermal imaging technology. The calibration of the infrared camera and the visible light camera can not only correct the image distortion, but also obtain the position relation between the two cameras, has important significance for the registration and fusion of the infrared image and the visible light image, and is a key part in the infrared thermal imaging technology. However, the imaging principle of the infrared camera is to image the thermal radiation of an object, and the infrared image usually has the characteristics of low resolution and lack of detailed information, so that the infrared camera is difficult to acquire the texture and the angular points of a common checkerboard calibration plate, and cannot calibrate the infrared camera by using a common checkerboard.
Although the existing partial infrared calibration plate can achieve the purpose of calibration, the precision is not high, and the angular point extraction is not accurate enough; some infrared calibration plates are provided with a plurality of regular round holes, and calibration is performed through infrared coordinates of the round holes, so that the calibration method is poor in universality, and the calibration plates are not suitable for calibration of a visible light camera. Therefore, it is necessary to design a calibration board with strong versatility and high accuracy, which is suitable for both infrared calibration and visible light cooperative calibration.
SUMMERY OF THE UTILITY MODEL
The utility model provides a calibration device that is used for infrared and visible light camera to mark in coordination that can't realize infrared and visible light camera to mark in coordination and mark the precision and remain the not enough that improve for the adoption ordinary calibration board that exists among the solution prior art. In order to achieve the above purpose, the utility model adopts the following technical scheme:
a calibration device for infrared and visible camera collaborative calibration is characterized by comprising:
the heat-conducting type heat-conducting device comprises a shell, and a checkerboard, a heating layer and an intermediate heat-conducting layer which are packaged in the shell, wherein the shell is made of an insulating and heat-insulating material, and the checkerboard is made of metal aluminum; the checkerboard comprises a bottom surface and a checkerboard surface; the heating layer is the bottommost layer, one surface of the heating layer is attached to the inner bottom surface of the shell, the other surface of the heating layer is attached to one surface of the middle heat-conducting layer, and the other surface of the middle heat-conducting layer is attached to the bottom surface of the checkerboard;
a temperature control display module for controlling and displaying the temperature of the heating layer and a power supply module for supplying power are embedded in the side surface of the interior of the shell, and the temperature control display module is respectively connected with the heating layer and the power supply module; the LED lamp tube is arranged on the upper portion of the chessboard surface of the chessboard grid plate on the inner periphery of the shell, an arc-shaped lampshade is fixedly arranged on the outer periphery of the LED lamp tube on the shell, the opening direction of the arc-shaped lampshade faces the chessboard surface of the chessboard grid plate, an LED lamp tube switch module connected with the LED lamp tube is arranged on the inner side of the shell, and the LED lamp tube switch module is connected with the power module.
The utility model adopts aluminum to make checkerboard, the aluminum has about 95% reflectivity to far infrared ray, the calibration board made of aluminum material can be identified by infrared camera, the angle point is clear, the utility model discloses the device heats the calibration board, and realizes the accurate control to the heating temperature through the temperature control display module, makes the checkerboard contrast stronger, the effect is obvious, the calibration is accurate; simultaneously the utility model discloses set up the LED fluorescent tube and make the calibration plate be used for the visible light mark of weather darkness regularly, can increase the visibility of checkerboard. The utility model discloses both can realize infrared or the monocular of visible light and mark, also can realize infrared and visible light demarcation in coordination.
Further, the heating layer comprises an insulating double-helix heating wire, and the insulating double-helix heating wire is wrapped in the heat-insulating non-woven fabric.
Further, power module is including the interface that charges and the battery compartment that is used for connecting and fixed battery, the power input end of battery compartment is connected and is seted up the interface that charges of casing side, the casing side is located battery compartment outside fixed mounting and has openable or closed battery compartment lid, the lid closes outside the battery compartment after the battery compartment lid is closed. Through setting up the battery compartment and the interface that charges, can use stand-by battery in inconvenient place that provides external power supply, make the device more portable practical.
Still further, the interface that charges has can cover and close the shield on the interface that charges, has prevented that the interface that charges from getting into the dust and arousing the trouble of charging.
Still further, the shield with the outside flexonics of casing, can say when needing that the shield covers, can say when charging that the shield takes off, it still keeps being connected through being connected with the outside flexonics of casing this moment, prevents that the shield from losing.
Further, the temperature control display module comprises a display screen and three control buttons, the display screen is used for displaying the current temperature of the calibration plate or the adjusted expected temperature, and the three control buttons are respectively a heating switch button, a temperature adding button and a temperature subtracting button which are fixedly arranged on the outer side of the shell. Contain display screen and three control button through setting up temperature control display module and realize calibration device and can realize accurate accuse temperature, the temperature is different, and the formation of image of calibration board in infrared camera is also different, and the best imaging state of calibration board in infrared camera is look for to adjustable temperature.
Further, the heat-conducting layer is a silica gel heat-conducting strip.
Furthermore, the calibration device also comprises a substrate, the substrate is embedded in the shell, the surface of the checkerboard is attached to the lower part of the substrate, and the substrate is float glass. The base plate makes the check laminating more level and more smooth.
Further, handles are arranged on two sides of the outer back surface of the shell, and a quick-mounting plate used for connecting an external support is arranged in the center of the outer back surface of the shell.
Further, the power supply module is connected with an external power supply to supply power and/or a built-in rechargeable battery to supply power.
The utility model discloses the beneficial technological effect who reaches:
the utility model relates to a calibration device that is used for infrared and visible light camera to mark in coordination, can be general in the demarcation of infrared and visible light, and the calibration board is conventional checkerboard, owing to adopt special material, and through the heating, can demonstrate clear angular point information in infrared image, have the demarcation instrument based on Zhang's demarcation in the matlab, also integrate in the opencv and have the flat camera calibration algorithm based on Zhang Zhengyou, the camera is through the multi-angle picture of shooting this calibration device, can use current instrument to carry out angular point detection and demarcation, need not develop on purpose and examine some detection or demarcation algorithm, therefore, the clothes hanger is strong in practicability. The calibration device can be used as a common calibration plate and also can be used as a calibration plate of an infrared camera, and the universality is strong.
The utility model discloses when demarcating the picture and taking under the environment of dark, can open the LED fluorescent tube on the calibration device and throw light on to the calibration board, improve the luminance of calibration board, increase contrast, be favorable to the drawing of angle point when the calibration. The calibration device can realize accurate temperature control through the temperature control display module, the temperature is different, and the imaging of the calibration plate in the infrared camera is also different.
The temperature control display module comprises a display screen and three control buttons, so that the optimal imaging state of the calibration plate in the infrared camera can be found by adjusting the temperature, the temperature is up to 48 ℃, and a user is prevented from being scalded during calibration; can fill the convenient constant temperature that supplies power for the calibration board of formula battery that fills, keep the calibration board, be equipped with the multisection battery and can take the open air to mark, maintain the constant temperature state of calibration board, consequently the utility model discloses the precision that makes the demarcation obviously improves.
The handle and the fast-assembling board are installed at the rear portion of the calibration board, the use is convenient, the fast-assembling board can be fixed through an external support, the shaking of the calibration board can be reduced by fixed shooting when necessary, and further imaging is clearer.
Drawings
FIG. 1 is a schematic view of an appearance structure of an embodiment of the present invention;
FIG. 2 is a schematic diagram of the internal structure of an embodiment of the present invention;
FIG. 3 is a side enlarged view of the schematic diagram of the internal structure of the embodiment of the present invention;
fig. 4 is a back view of an appearance structure diagram of an embodiment of the present invention;
FIG. 5 is an analytic view of a part of the internal structure of the embodiment of the present invention;
the designations in the drawings have the following meanings: 1, a shell; 1-1 shell side; 1-2 back of the shell; 2, checkerboard; 3, LED lamp tubes; 4, arc lampshade; 5, a temperature control display module; 5-1, adding a button at the temperature; 5-2, a temperature reduction button; 5-3 heating the switch button; 5-4 small display screen; 6, a charging interface; 7 charging port dust-proof cover; 8, covering the battery compartment; 9LED lamp switch buttons; 10 rechargeable batteries; 11 a handle; 12, fast mounting a plate; 13 a float glass substrate; 14 silica gel heat conducting fins; 15 insulating double helix heating wire; 16 heat preservation non-woven fabrics.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model provides a calibration device that is used for infrared and visible light camera to mark in coordination, this calibration device have the heating function, and the calibration board after the heating can realize the demarcation to infrared camera, also can realize infrared and visible light in coordination to mark, under the environment that light is more weak, opens the LED lamp on the calibration board, can improve the luminance and the contrast of calibration board, increases the precision that visible light was markd.
Specific embodiments are described in detail below:
a calibration device (as shown in figure 1) for infrared and visible light camera cooperative calibration comprises a shell 1 and a checkerboard 2 matched with the shell, wherein the checkerboard 2 is upward in checkerboard, the shell 1 is made of insulating and heat-insulating materials and prevents users from being scalded; the checkerboard surface of the checkerboard 2 is composed of checkerboard layers of chess formed by a 12 x 9 black-white square grid array, the material is aluminum oxide, white squares are primary colors of the aluminum oxide, and special wear-resistant coatings (such as chromium oxide or tungsten carbide) are painted on the black squares in a smooth mode so as to achieve different heat absorption effects and display clear checkerboards in infrared images.
Four edges of the front face 1-2 of the shell are respectively provided with an LED lamp tube 3, the lamp tubes 3 are covered by arc-shaped lamp shades 4, and the opening directions of the lamp shades face the checkerboard, so that the calibration board is used for timing a visible light mark in dark weather, and the visibility and the contrast of the checkerboard can be increased. An LED lamp tube switch module is arranged in the shell, and an LED lamp tube switch button 9 in the LED lamp tube switch module controls the on-off state of the LED lamp tube 3. The side surface 1-1 of the shell is embedded with a temperature control display module 5 with a calibrated plate surface, a power supply module 6 and an LED lamp tube switch button 10. In a specific embodiment, the arc lampshade 4 is separately fixedly arranged inside the housing, and can also be made into a part of the structure of the edge of the housing.
The shell is mainly internally packaged with three layers, wherein the bottommost layer is a heating layer, the middle layer is a heat conduction layer, and the uppermost layer is a checkerboard layer; the bottom is the zone of heating, and the one side laminating of zone of heating the inner bottom surface of casing, the another side laminating of zone of heating the one side of middle heat-conducting layer the another side laminating of middle heat-conducting layer the bottom surface of checkerboard.
On the basis of the above embodiments, the specific embodiment further includes: the checkerboard surface of the checkerboard 2 is attached to the substrate, the checkerboard surface of the checkerboard is located on the front face of the shell, the substrate is embedded in the packaging shell 1, the substrate 13 is made of float glass, the float glass is smoother than tempered glass, the checkerboard can be attached to be smooth, and the calibration precision is improved.
On the basis of the above embodiments, the specific embodiment further includes: the temperature control display module comprises a small display screen 5-4 and three control buttons, wherein the three control buttons are a heating switch button 5-3, a temperature adding button 5-1 and a temperature subtracting button 5-2 respectively; the small display screen 5-4 displays the current temperature or the adjusted expected temperature of the calibration board, when the temperature is adjusted, the display screen displays the preset temperature, the current temperature of the calibration board is displayed after a plurality of seconds, and if the preset temperature is reached, the temperature on the display screen keeps balanced, the embodiment is such as a temperature display module of an air conditioner or a temperature display module of an electric blanket, the calibration boards with different temperatures have different effects in an infrared camera, the temperature is adjusted according to the effect in the infrared camera, the fact that angular points can be detected during calibration is guaranteed, calibration is accurate, the highest temperature of the calibration board is 48 degrees, a user is prevented from being scalded due to overhigh temperature, and a better-imaged picture can be found within 48 degrees.
On the basis of the above embodiment, the power supply module is connected with an external power supply to supply power and/or a built-in rechargeable battery to supply power.
On the basis of the above embodiments, the specific embodiment further includes: the power module comprises a charging interface 6, a chargeable and dischargeable battery 10, a battery bin and a battery bin cover 8, wherein the charging interface 6 is provided with a dustproof cover 7, the dustproof cover 7 is flexibly connected with the charging interface 6, the dustproof cover can be covered when needed, the dustproof cover can be taken down when charging is carried out, and the dustproof cover is still kept connected with the outer portion of the shell through flexible connection at the moment, so that the dustproof cover is prevented from being lost. The rechargeable battery 10 is installed in a battery compartment in the shell and is installed through a battery compartment installation port, the battery compartment installation port is arranged on the shell, the installation port is covered by a battery compartment cover 8, and the charging fault caused by the fact that dust enters the charging port is prevented. The chargeable and dischargeable battery 10 supplies power to the electric equipment of the whole heating plate, and the chargeable and dischargeable battery can be connected with an external power supply for charging through the charging interface 6 in the calibration plate, so that the battery can be pulled out and charged through other special charging equipment.
On the basis of the above embodiment, the heating layer comprises an insulating double-helix heating wire 15, and the insulating double-helix heating wire is wrapped in the heat-insulating non-woven fabric 15 in an S shape; preferably, the insulated double-helix heating wire 15 is a common double-helix heating wire of the existing electric blanket, the heating layer is implemented as the structure of the electric blanket, the periphery of the heating layer is wrapped, and a connecting port of an electric heating wire is leaked and connected with the temperature control display module 5.
On the basis of the above embodiment, the heat conducting layer is a layer of thin silica gel heat conducting sheet 15, the thin silica gel heat conducting sheet can evenly conduct the heat of the heating wire to the float glass 13, and the checkerboard 2 is attached to the recurrence glass and can be evenly heated.
On the basis of the above embodiment, the housing back 1-2 is provided with two handles 11 and a quick-mounting plate 12, the handles 11 are positioned at two sides of the housing back 1-2, and the quick-mounting plate 12 is attached to the center of the housing back 1-2.
On the basis of the above embodiment, the following specific implementation process is explained:
as shown in the embodiments of fig. 1, 2, and 3, the checkerboard surface of the checkerboard of the present embodiment is located on the front surface of the package housing, the periphery of the front surface of the housing is respectively provided with one LED lamp tube, the lamp tube is covered by the arc lampshade, the LED lamp tube switch button is located on the side surface of the housing, the LED lamp tube switch button is turned on, and after the LED lamp is turned on, the light is converged on the checkerboard, so that the visible light camera can conveniently shoot and calibrate in a dark environment; the checkerboard is made of aluminum oxide, white squares on the checkerboard surface are in the primary color of the aluminum oxide, a layer of special material is painted on black squares, and after the calibration board is heated, clear checkerboard angular points can be displayed in the infrared camera. There are control by temperature change display module and power module calibration board side, when using, put into the battery compartment with the sufficient battery of electric quantity, external power source can be connected when the battery electric quantity is not enough and charge, open the heating switch before the shooting of calibration picture, with temperature regulation to the temperature that reaches in advance, treat that the temperature reaches the back, carry out calibration board multi-angle and shoot, if the formation of image effect in infrared camera is not good, can continue to adjust calibration board temperature, shoot again after finding the best effect of being imaged of calibration board.
According to the embodiment shown in the figures 2, 3 and 5, the calibration plate is heated by the S-shaped insulating double-helix heating wires, the S-shaped insulating double-helix heating wires are wrapped in the heat-insulation non-woven fabric, heating is made to be uniform as far as possible, the heat is transmitted to the checkerboard layer more uniformly, the checkerboard layer is heated uniformly, a silica gel heat conduction layer is arranged between the checkerboard layer and the heating layer, the checkerboard layer is attached to the float glass for the checkerboard surface, the float glass is very flat, and subsequent calibration precision can be improved. When the calibration device is used for outdoor calibration, a plurality of batteries can be prepared, and the problem that the calibration plate cannot maintain a constant temperature state after the batteries are not electrified to influence the image imaging effect is prevented; when the temperature of the calibration device is not adjusted, the small display screen displays the current temperature of the calibration plate, when the temperature of the calibration device is adjusted, the small display screen displays the pre-adjusted temperature, and the current temperature of the calibration device is continuously displayed for a plurality of seconds after the pre-adjustment is finished.
As the embodiment shown in figure 4, the handle at the back of the shell of the calibration device is convenient to carry, when the calibration picture is shot, the handheld calibration plate is easy to shake, the shot picture is easy to ghost, the shooting progress is influenced, the calibration device can be fixed on an external support through a quick-mounting plate and then shot, the angle of the calibration plate is artificially adjusted, multi-angle shooting is completed, the stability is good, and the interference of the temperature of a human body to the calibration device when the handheld calibration device is shot is also avoided.
When the calibration picture is used for calibration, the infrared image and the visible light image can be placed into a matlab calibration tool or a calibration APP for calibration and correction. The calibration device can be used for infrared camera calibration and infrared and visible light camera cooperative calibration, can also be used for binocular and multi-target calibration shooting of the visible light camera and the visible light camera, and can be used as a common calibration plate and an infrared calibration plate.
The utility model aims at providing a calibration device for infrared and visible light camera collaborative calibration, the calibration device has a heating function, the calibration panel after heating can realize the calibration of the infrared camera, the practicability is strong, and the infrared and visible light collaborative calibration can also be realized; the checkerboard in the infrared image collected by the calibration device is clear, and the accuracy is high.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.
Claims (10)
1. A calibration device for infrared and visible camera collaborative calibration is characterized by comprising: the heat-conducting type heat-conducting device comprises a shell, and a checkerboard, a heating layer and an intermediate heat-conducting layer which are packaged in the shell, wherein the shell is made of an insulating and heat-insulating material, and the checkerboard is made of metal aluminum; the checkerboard comprises a bottom surface and a checkerboard surface; the heating layer is the bottommost layer, one surface of the heating layer is attached to the inner bottom surface of the shell, the other surface of the heating layer is attached to one surface of the middle heat-conducting layer, and the other surface of the middle heat-conducting layer is attached to the bottom surface of the checkerboard;
a temperature control display module for controlling and displaying the temperature of the heating layer and a power supply module for supplying power are embedded in the side surface of the interior of the shell, and the temperature control display module is respectively connected with the heating layer and the power supply module; the LED lamp tube is arranged on the upper portion of the chessboard surface of the chessboard grid plate on the inner periphery of the shell, an arc-shaped lampshade is fixedly arranged on the outer periphery of the LED lamp tube on the shell, the opening direction of the arc-shaped lampshade faces the chessboard surface of the chessboard grid plate, an LED lamp tube switch module connected with the LED lamp tube is arranged on the inner side of the shell, and the LED lamp tube switch module is connected with the power module.
2. The calibration device for infrared and visible light camera collaborative calibration according to claim 1, wherein the heating layer comprises an insulated double-helix heating wire wrapped in a heat-insulating non-woven fabric.
3. The calibration device for infrared and visible light camera collaborative calibration according to claim 1, wherein the power module includes a charging interface and a battery compartment for connecting and fixing a battery, a power input end of the battery compartment is connected with the charging interface provided at a side surface of the housing, a battery compartment cover which can be opened or closed is fixedly installed at a side surface of the housing, which is located at an outer side of the battery compartment, and the battery compartment cover is closed and then closed at an outer side of the battery compartment.
4. The calibration device for infrared and visible camera collaborative calibration according to claim 3, wherein a dust cover is flexibly connected with the outside of the housing, and the dust cover can cover the charging interface.
5. The calibration device of claim 1, wherein the temperature control display module comprises a display screen and three control buttons, the display screen is used for displaying the current temperature of the heating layer or the adjusted expected temperature, and the three control buttons are a heating switch button, a temperature adding button and a temperature subtracting button which are fixedly arranged at the outer side of the housing.
6. The calibration device for infrared and visible camera cooperative calibration according to claim 1, wherein: the heat conducting layer is a silica gel heat conducting sheet.
7. The calibration device for infrared and visible camera cooperative calibration according to claim 1, wherein: the calibration device further comprises a substrate, the substrate is embedded in the shell, the surface of the checkerboard is attached to the lower portion of the substrate, and the substrate is made of float glass.
8. A calibration arrangement for infrared and visible light camera co-calibration as claimed in claim 1, wherein the housing is provided with handles on both sides of its outer back surface and a snap-in plate for attachment to an external bracket is provided in the center of the outer back surface of the housing.
9. The calibration device for infrared and visible camera collaborative calibration according to claim 1, wherein the power module is connected with an external power supply and/or a built-in rechargeable battery for power supply.
10. The calibration device for infrared and visible camera collaborative calibration as recited in claim 1, wherein white squares on the checkerboard surface of the checkerboard are in the primary color of alumina, black squares are in the form of a photoplotting special wear-resistant coating, and the special wear-resistant coating comprises chromium oxide or tungsten carbide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921611344.0U CN210571042U (en) | 2019-09-25 | 2019-09-25 | Calibration device for infrared and visible light camera collaborative calibration |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921611344.0U CN210571042U (en) | 2019-09-25 | 2019-09-25 | Calibration device for infrared and visible light camera collaborative calibration |
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| CN210571042U true CN210571042U (en) | 2020-05-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111793953A (en) * | 2020-06-18 | 2020-10-20 | 杭州法尼亚科技有限公司 | Travel underwear stoving package |
| CN114323307A (en) * | 2021-12-17 | 2022-04-12 | 东莞先导先进科技有限公司 | Infrared calibration device and test equipment |
-
2019
- 2019-09-25 CN CN201921611344.0U patent/CN210571042U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111793953A (en) * | 2020-06-18 | 2020-10-20 | 杭州法尼亚科技有限公司 | Travel underwear stoving package |
| CN114323307A (en) * | 2021-12-17 | 2022-04-12 | 东莞先导先进科技有限公司 | Infrared calibration device and test equipment |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20200519 |