CN210570529U - Calibration system for camera and projector - Google Patents
Calibration system for camera and projector Download PDFInfo
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- CN210570529U CN210570529U CN201920279903.6U CN201920279903U CN210570529U CN 210570529 U CN210570529 U CN 210570529U CN 201920279903 U CN201920279903 U CN 201920279903U CN 210570529 U CN210570529 U CN 210570529U
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Abstract
The utility model discloses a calibration system of a camera and a projector, which comprises a camera, a projector, a display screen for projection and a processor; the processor is respectively connected with the camera and the projector, and respectively sends trigger signals to the camera and the projector; the camera comprises a camera lens, the projector comprises a projection lens, and the shooting direction of the camera lens and the projection direction of the projection lens are both aligned with the display screen; the display screen displays a calibration pattern, and the color of the calibration pattern is variable; the projector projects a calibration image to the display screen; the camera transmits image signals to the processor. The utility model discloses a camera and projector's calibration system can acquire the demarcation relation between camera, the projector of projection grating modeling system, makes the precision of projection grating modeling higher, and the model of establishing is fidelity more.
Description
Technical Field
The utility model relates to a calibration system of camera and projecting apparatus.
Background
Three-dimensional reconstruction refers to the establishment of a mathematical model suitable for computer representation and processing of a three-dimensional object, is the basis for processing, operating and analyzing the properties of the three-dimensional object in a computer environment, and is also a key technology for establishing virtual reality expressing an objective world in a computer.
The three-dimensional reconstruction of the grating projection is a three-dimensional reconstruction mode, the grating is respectively projected to a reference plane and the surface of a measured object, and the reference grating projected to the reference plane is not deformed because the reference plane is a horizontal plane; when the grating is projected on the surface of the measured object, the grating can generate deformation of different degrees because the projected grating is modulated by the height of the surface of the measured object. The heights of the placed measured objects are different, the phase change degrees of the gratings are different, and the phase change of the two-dimensional plane deformation stripes carries three-dimensional shape information of the surfaces of the objects. Therefore, by obtaining the phase change value, the height of the object at the corresponding point can be obtained, and the contour shape of the three-dimensional object can be obtained.
The existing three-dimensional reconstruction by grating projection has the defects of serious image distortion and low accuracy of model establishment due to the inconvenience of camera and projector calibration.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to have in order to overcome prior art grating projection to mark inconveniently in carrying out the three-dimensional reconstruction, and the image distortion is serious, establishes the lower defect of precision of model, provides a can more accurately acquire the demarcation relation between camera, the projecting apparatus of projection grating modeling system, makes the precision of projection grating modeling higher, the camera of the model fidelity more of establishing and the calibration system of projecting apparatus.
The utility model discloses an above-mentioned technical problem is solved through following technical scheme:
a calibration system for a camera and a projector is characterized by comprising a camera, a projector, a display screen for projection and a processor;
the processor is respectively connected with the camera and the projector, and respectively sends trigger signals to the camera and the projector;
the camera comprises a camera lens, the projector comprises a projection lens, and the shooting direction of the camera lens and the projection direction of the projection lens are both aligned with the display screen;
the display screen displays a calibration pattern, and the color of the calibration pattern is variable;
the projector projects a calibration image to the display screen;
the camera transmits image signals to the processor.
Preferably, the display screen includes a power supply module and a display panel, the display panel is provided with an electrochromic dye, and the power supply module is connected with the electrochromic dye.
Preferably, the display screen comprises a translucent white board, the calibration pattern is printed on the front surface of the translucent white board, a plurality of LED lamps are arranged on the back surface of the translucent white board, and the illumination direction of the LED lamps is aligned with the translucent white board.
Preferably, the display screen is a liquid crystal display screen, the liquid crystal display screen displays a preset pattern, the shape of the preset pattern is the same as that of the calibration pattern, and the color of the preset pattern is changeable.
Preferably, the processor comprises a model DLP lightcraft 4500 development board, texas instruments, usa.
Preferably, the calibration system for the camera and the projector comprises a support frame, the support frame comprises two support rods, a holder is arranged at the top of each support rod, and the camera and the projector are respectively arranged on the holders.
Preferably, the support frame further comprises a transverse fixing rod connected with the display screen, the transverse fixing rod is perpendicular to the two support rods, and the length of the transverse fixing rod is adjustable.
On the basis of the common knowledge in the field, the above preferred conditions can be combined at will to obtain the preferred embodiments of the present invention.
The utility model discloses an actively advance the effect and lie in:
the utility model discloses a camera and projector's calibration system can acquire the image relation between camera, the projector of projection grating modeling system, conveniently acquires overexposure, the region of crossing dark, makes the precision of projection grating modeling higher, and the model of establishing is fidelity more.
Drawings
Fig. 1 is a schematic structural diagram of a calibration system of a camera and a projector according to embodiment 1 of the present invention.
Detailed Description
The present invention is further illustrated by way of the following examples, which are not intended to limit the scope of the invention.
Example 1
Referring to fig. 1, the present embodiment provides a calibration system for a camera and a projector.
The calibration system comprises a camera 11, a projector 12, a display screen 13 for projection and a processor;
the processor is respectively connected with the camera and the projector, and respectively sends trigger signals to the camera and the projector;
the camera comprises a camera lens, the projector comprises a projection lens, and the shooting direction of the camera lens and the projection direction of the projection lens are both aligned with the display screen;
the display screen displays a calibration pattern, and the color of the calibration pattern is variable;
the projector projects a calibration image to the display screen;
the camera transmits image signals to the processor.
The display screen comprises a power supply module and a display panel, wherein the display panel is provided with electrochromic dye, and the power supply module is connected with the electrochromic dye.
The calibration pattern of the embodiment is made of electrochromic dye, and the color of the calibration pattern can be changed by changing the color of the electrochromic dye after the electrochromic dye is electrified.
The processor includes a development board model DLP lightcraft 4500, available from texas instruments, usa.
The calibration system of the camera and the projector comprises a support frame and a base 14, the support frame comprises two support rods 15, a holder 16 is arranged at the top of each support rod, and the camera and the projector are respectively arranged on the holders.
The support frame further comprises a transverse fixing rod 17 connected with the display screen, the transverse fixing rod is perpendicular to the two support rods, and the length of the transverse fixing rod is adjustable.
Example 2
This embodiment is substantially the same as embodiment 1 except that:
the display screen comprises a semitransparent white board, the calibration patterns are printed on the front surface of the semitransparent white board, a plurality of LED lamps are arranged on the back surface of the semitransparent white board, and the illumination directions of the LED lamps are aligned to the semitransparent white board.
The color of the calibration pattern can be changed by changing the color depth of the pattern on the semitransparent white board after the LED lamp is electrified.
Example 3
This embodiment is substantially the same as embodiment 1 except that:
the display screen is a liquid crystal display screen, the liquid crystal display screen displays a preset pattern, the shape of the preset pattern is the same as that of the calibration pattern, and the color of the preset pattern is changeable.
The color of the calibration pattern can be changed by displaying the calibration pattern with different colors through the liquid crystal display screen.
Although particular embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are examples only and that the scope of the present invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (7)
1. A calibration system for a camera and a projector is characterized by comprising a camera, a projector, a display screen for projection and a processor;
the processor is respectively connected with the camera and the projector, and respectively sends trigger signals to the camera and the projector;
the camera comprises a camera lens, the projector comprises a projection lens, and the shooting direction of the camera lens and the projection direction of the projection lens are both aligned with the display screen;
the display screen displays a calibration pattern, and the color of the calibration pattern is variable;
the projector projects a calibration image to the display screen;
the camera transmits image signals to the processor.
2. The calibration system as recited in claim 1, wherein the display screen comprises a power supply module and a display panel, the display panel is provided with electrochromic dye, and the power supply module is connected with the electrochromic dye.
3. The calibration system according to claim 1, wherein the display screen comprises a translucent white board, the calibration pattern is printed on the front surface of the translucent white board, and a plurality of LED lamps are arranged on the back surface of the translucent white board, and the illumination directions of the LED lamps are aligned with the translucent white board.
4. The calibration system as claimed in claim 1, wherein the display screen is a liquid crystal display screen, the liquid crystal display screen displays a predetermined pattern, the predetermined pattern has a shape identical to that of the calibration pattern, and the color of the predetermined pattern is changeable.
5. The calibration system of claim 1, wherein the processor comprises a model DLP lightcraft 4500 development board, texas instruments, usa.
6. The calibration system as claimed in claim 1, wherein the calibration system for the camera and the projector comprises a support frame, the support frame comprises two support rods, a holder is disposed on the top of each support rod, and the camera and the projector are respectively disposed on the holders.
7. The calibration system as claimed in claim 6, wherein the supporting frame further comprises a transverse fixing rod connected to the display screen, the transverse fixing rod is perpendicular to the two supporting rods, and the length of the transverse fixing rod is adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920279903.6U CN210570529U (en) | 2019-03-05 | 2019-03-05 | Calibration system for camera and projector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920279903.6U CN210570529U (en) | 2019-03-05 | 2019-03-05 | Calibration system for camera and projector |
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| CN210570529U true CN210570529U (en) | 2020-05-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111811432A (en) * | 2020-06-16 | 2020-10-23 | 中国民用航空飞行学院 | Three-dimensional imaging system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111811432A (en) * | 2020-06-16 | 2020-10-23 | 中国民用航空飞行学院 | Three-dimensional imaging system and method |
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