CN117555196A - Device and method for realizing 3D color high-precision imaging based on mode of changing metal curvature - Google Patents
Device and method for realizing 3D color high-precision imaging based on mode of changing metal curvature Download PDFInfo
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- CN117555196A CN117555196A CN202311401432.9A CN202311401432A CN117555196A CN 117555196 A CN117555196 A CN 117555196A CN 202311401432 A CN202311401432 A CN 202311401432A CN 117555196 A CN117555196 A CN 117555196A
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- 238000003384 imaging method Methods 0.000 title claims abstract description 29
- 239000002184 metal Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims abstract description 43
- 230000008859 change Effects 0.000 claims abstract description 8
- 239000000919 ceramic Substances 0.000 claims description 28
- 230000009471 action Effects 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract description 3
- 101700004678 SLIT3 Proteins 0.000 description 10
- 102100027339 Slit homolog 3 protein Human genes 0.000 description 10
- 230000006872 improvement Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B35/00—Stereoscopic photography
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
- G02B26/0825—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements the reflecting element being a flexible sheet or membrane, e.g. for varying the focus
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
Abstract
The invention relates to a 3D color high-precision imaging device based on a mode of changing metal curvature, wherein a light source, a slit and a high-speed camera are respectively arranged on the corresponding side of a beam splitter prism, an elastic sheet with a reflecting surface coated with a reflecting film is arranged on the light emergent side of the slit, a curvature adjusting mechanism for changing the focus of light converged by the elastic sheet is fixed on a scanning angle adjusting mechanism, and the scanning angle adjusting mechanism is used for changing the angles of the curvature adjusting mechanism and the elastic sheet so as to change the position of the focus of light. The beneficial effects are as follows: the angle of the curvature adjusting mechanism and the angle of the elastic sheet are changed through the scanning angle adjusting mechanism, and the curvature of the elastic sheet are changed through the curvature adjusting mechanism, so that light is converged at different positions on the surface of an object and forms light spots, the light intensities of reflected light at the different positions are obtained, point cloud data at the different positions are determined, a 3D point cloud image of the object is reconstructed, the color 3D image of the object is collected rapidly, the object does not need to move in the detection process, measurement errors can be reduced, and high-precision imaging is realized.
Description
Technical Field
The invention relates to the field of 3D imaging, in particular to a device and a method for realizing 3D color high-precision imaging based on a mode of changing metal curvature.
Background
Most of the current 3D imaging uses a speckle light source or an LED light source to image, but the traditional light source imaging technology cannot rapidly acquire the color 3D image of the object, and the object is required to be moved during the imaging process, so that measurement errors exist.
Disclosure of Invention
The invention aims to provide a device and a method for realizing 3D color high-precision imaging based on a mode of changing metal curvature, so as to overcome the defects in the prior art.
The technical scheme for solving the technical problems is as follows: a method for implementing 3D color high precision imaging equipment based on changing metal curvature, comprising: the device comprises a beam splitting prism and a scanning angle adjusting mechanism, wherein a light source is arranged on the light inlet side of the beam splitting prism, a slit is arranged on the light transmission and light outlet side of the beam splitting prism, a high-speed camera is arranged on the light reflection and light outlet side of the beam splitting prism, an elastic sheet with a reflecting surface coated with a reflecting film is arranged on the light outlet side of the slit, the scanning angle adjusting mechanism is fixedly provided with a curvature adjusting mechanism for changing the converging light focus of the elastic sheet, and the scanning angle adjusting mechanism is used for changing the angles of the curvature adjusting mechanism and the elastic sheet so as to change the position of the light focus.
On the basis of the technical scheme, the invention can be improved as follows.
Further, the curvature adjusting mechanism includes: the piezoelectric ceramic driver and the two piezoelectric ceramic stacks are arranged at two ends of the elastic sheet and fixed on the scanning angle adjusting mechanism; the piezoelectric ceramic driver is respectively and electrically connected with the two piezoelectric ceramic stacks and used for driving the two piezoelectric ceramic stacks to enable the two piezoelectric ceramic stacks to generate displacement, and finally the elastic sheet is extruded to enable the curvature of the elastic sheet to change.
Still further, the scanning angle adjusting mechanism includes: the device comprises a fixing device and a scanning motor, wherein a main shaft of the scanning motor is fixed with the fixing device, and two piezoelectric ceramic stacks are fixed on the fixing device.
Further, a focusing lens is arranged between the light entrance side of the beam splitter prism and the light source.
Further, the elastic sheet is a metal sheet.
Further, the light source adopts a white light source.
Further, the reflecting surface of the elastic sheet is a cylindrical surface.
Based on the technical scheme, the invention also provides a method for realizing 3D color high-precision imaging based on the mode of changing the metal curvature, which adopts the mode of changing the metal curvature to realize 3D color high-precision imaging equipment and comprises the following steps:
s100, starting a light source, enabling light emitted by the light source to enter a beam splitting prism, transmitting the light from the beam splitting prism to a slit, and transmitting the light from the slit to a reflecting film of the elastic sheet;
s200, the reflecting film gathers the light irradiated on the reflecting film on the surface of the object and forms light spots, the reflected light on the surface of the object is reflected back to the reflecting film, and the reflected light on the reflecting film is shot to the reflecting surface of the beam splitter prism through the slit;
s300, the high-speed camera collects reflected light on the beam splitting prism, reads the light intensity, and then determines point cloud data of the point according to the light intensity of the position;
s400, firstly, changing the angles of the curvature adjusting mechanism and the elastic sheet through the scanning angle adjusting mechanism, then changing the curvature of the elastic sheet through the curvature adjusting mechanism so that light is converged at the next position on the surface of the object and forms a light spot, and then repeating the action, and acquiring the light intensities of reflected light at different positions to determine point cloud data at different positions;
s500, reconstructing a 3D point cloud image of the object according to a plurality of groups of different point cloud data.
Further, the light emitted by the light source is focused by the focusing lens and then enters the beam splitting prism.
The beneficial effects of the invention are as follows: the light source is started, light emitted by the light source enters the beam splitting prism, then is transmitted to the slit from the beam splitting prism, and is emitted to the reflecting film of the elastic sheet through the slit, the reflecting film can enable the light irradiated on the reflecting film to be converged on the surface of an object and form light spots, then the reflected light on the surface of the object is reflected back to the reflecting film, finally the reflected light on the reflecting film is emitted to the reflecting surface of the beam splitting prism through the slit, the high-speed camera collects the reflected light on the beam splitting prism and reads the light intensity, then the point cloud data of the point is determined according to the light intensity of the position, the curvature of the elastic sheet is changed through the curvature adjusting mechanism, so that the light is converged at different positions on the surface of the object and forms light spots, the action is repeated, the light intensity of the reflected light is obtained at different positions, the point cloud data of the different positions are determined, the light focus is scanned in space, the 3D point cloud image of the object is reconstructed according to the point cloud data of a plurality of groups of different positions, the object color 3D image is collected rapidly, the object does not move in the detection process, measurement error can be reduced, and high-precision imaging is achieved.
Drawings
FIG. 1 is a block diagram of a 3D color high-precision imaging device implemented based on a manner of changing metal curvature in the present invention;
fig. 2 is a structural view of an elastic sheet.
In the drawings, the list of components represented by the various numbers is as follows:
1. the device comprises a beam splitting prism, 2, a light source, 3, a slit, 4, a high-speed camera, 5, an elastic sheet, 6, a piezoelectric ceramic driver, 7, a piezoelectric ceramic stack, 8, a fixing device, 9, a scanning motor, 10 and a focusing lens.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
Example 1
As shown in fig. 1, a method for realizing 3D color high-precision imaging based on changing metal curvature includes: a beam splitting prism 1 and a scanning angle adjusting mechanism;
a light source 2 is arranged on the light-in side of the beam-splitting prism 1, a slit 3 is arranged on the light-transmitting side of the beam-splitting prism 1, and light emitted by the light source 2 enters the beam-splitting prism 1 and then is transmitted to the slit 3;
the high-speed camera 4 is arranged on the light-emitting side of the light-splitting prism 1, and the elastic sheet 5 with a reflecting surface coated with a reflecting film is arranged on the light-emitting side of the slit 3;
the scanning angle adjusting mechanism is fixed on the scanning angle adjusting mechanism and is used for changing the angle between the curvature adjusting mechanism and the elastic sheet 5 so as to change the position of the light focus;
the working principle is as follows:
the light source 2 is started, light emitted by the light source 2 enters the beam-splitting prism 1, then is transmitted to the slit 3 from the beam-splitting prism 1, and is emitted to the reflecting film of the elastic sheet 5 from the slit 3;
the reflecting film can enable the light irradiated on the reflecting film to be converged on the surface of the object and form light spots, then the reflected light on the surface of the object is reflected back to the reflecting film, and finally the reflected light on the reflecting film is emitted to the reflecting surface of the beam splitting prism 1 through the slit 3;
the high-speed camera 4 collects reflected light on the beam splitter prism 1, reads the light intensity, and then determines point cloud data P (x, y, z) of the point according to the light intensity of the position;
if the point cloud data of the next position is to be determined, the angle of the curvature adjusting mechanism and the angle of the elastic sheet 5 are changed through the scanning angle adjusting mechanism, then the curvature of the elastic sheet 5 is changed through the curvature adjusting mechanism, so that light is converged at the next position on the surface of the object and forms light spots, the action is repeated, the light intensities of reflected light at different positions are obtained, the point cloud data of different positions are determined, scanning of the light focus in space is realized, the 3D point cloud image of the object is reconstructed according to a plurality of groups of point cloud data of different positions, the color 3D image of the object is acquired quickly, the object does not move in the detection process, the measurement error can be reduced, and high-precision imaging is realized.
Example 2
As shown in fig. 1, this embodiment is a further improvement of embodiment 1, specifically as follows:
the curvature adjusting mechanism includes: the piezoelectric ceramic driver 6 and two piezoelectric ceramic stacks 7, the two piezoelectric ceramic stacks 7 are arranged at two ends of the elastic sheet 5, and the two piezoelectric ceramic stacks 7 are fixed on the scanning angle adjusting mechanism; the piezoelectric ceramic drivers 6 are electrically connected to the two piezoelectric ceramic stacks 7, respectively, and the piezoelectric ceramic drivers 6 are configured to drive the two piezoelectric ceramic stacks 7, so that the two piezoelectric ceramic stacks 7 displace (stretch) and finally press the elastic sheet 5 to change the curvature of the elastic sheet 5.
In the practical application process, the curvature adjusting mechanism with other structures is not excluded, and the structure is enough to change the curvature of the elastic sheet 5.
Example 3
As shown in fig. 1, this embodiment is a further improvement of the embodiment 1 or 2, and is specifically as follows:
the scanning angle adjusting mechanism includes: the device comprises a fixing device 8 and a scanning motor 9, wherein a main shaft of the scanning motor 9 is fixed with the fixing device 8, and two piezoelectric ceramic stacks 7 are fixed on the fixing device 8; the scanning motor 9 is started, the scanning motor 9 drives the fixing device 8 to rotate, so that the two piezoelectric ceramic stacks 7 and the elastic piece 5 rotate along with the fixing device 8, the angle is changed, and finally light is converged at different positions on the surface of an object to form light spots.
Example 4
As shown in fig. 1, this embodiment is a further improvement of any of embodiments 1 to 3, and specifically includes the following:
a focusing lens 10 is arranged between the light incident side of the beam splitter prism 1 and the light source 2, the focusing lens 10 can focus the light emitted by the light source 2, and the focused light enters the beam splitter prism 1.
Example 5
As shown in fig. 1, this embodiment is a further improvement of any of embodiments 1 to 4, and is specifically as follows:
the elastic sheet 5 is preferably a metal sheet, has good elasticity and is beneficial to adjusting the curvature.
Example 6
As shown in fig. 1, this embodiment is a further improvement of any of embodiments 1 to 5, and specifically includes the following:
the light source 2 is preferably a white light source.
Example 7
As shown in fig. 2, this embodiment is a further improvement of any of embodiments 1 to 6, and is specifically as follows:
the reflecting surface of the elastic sheet 5 is a cylindrical surface, so that light can be well reflected and received.
Example 8
A method for realizing 3D color high-precision imaging based on a mode of changing metal curvature adopts the mode of changing metal curvature to realize 3D color high-precision imaging equipment, which comprises the following steps:
s100, the light source 2 is started, light emitted by the light source 2 enters the beam-splitting prism 1, then is transmitted to the slit 3 from the beam-splitting prism 1, and is emitted to the reflecting film of the elastic sheet 5 from the slit 3;
s200, the reflection film gathers the light irradiated on the reflection film on the surface of the object and forms light spots, the reflected light on the surface of the object is reflected back to the reflection film, and the reflected light on the reflection film is emitted to the reflection surface of the beam splitter prism 1 through the slit 3;
s300, the high-speed camera 4 reads the light intensity of the reflected light on the beam-splitting prism 1, and determines point cloud data P (x 1, y1, z 1) of the point according to the light intensity of the position;
s400, firstly, changing the angles of the curvature adjusting mechanism and the elastic sheet 5 through the scanning angle adjusting mechanism, then changing the curvature of the elastic sheet 5 through the curvature adjusting mechanism so that light is converged at the next position on the surface of the object and forms light spots, reflecting light on the surface of the object back to the reflecting film, directing the reflected light on the reflecting film to the reflecting surface of the beam splitting prism 1 through the slit 3, reading the light intensity of the reflected light on the beam splitting prism 1 through the high-speed camera 4, and determining point cloud data P (x 2, y2, z 2) of the point according to the light intensity of the position;
s500, repeating the step S400 to obtain a plurality of groups of different point cloud data, and reconstructing a 3D point cloud image of the object according to the plurality of groups of different point cloud data.
For the solution with the focusing lens 10, the light emitted by the light source 2 in S100 is focused by the focusing lens 10 and then enters the beam splitting prism 1.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (9)
1. A method for implementing 3D color high-precision imaging equipment based on changing metal curvature, comprising: the light source (2) is arranged on the light incident side of the light splitting prism (1), the slit (3) is arranged on the light transmitting and emitting side of the light splitting prism (1), the high-speed camera (4) is arranged on the light reflecting and emitting side of the light splitting prism (1), the reflecting surface of the slit (3) is provided with the elastic sheet (5) coated with the reflecting film, the curvature adjusting mechanism for changing the converging light focus of the elastic sheet (5) is fixed on the scanning angle adjusting mechanism, and the scanning angle adjusting mechanism is used for changing the angles of the curvature adjusting mechanism and the elastic sheet (5) so as to change the position of the light focus.
2. The apparatus for realizing 3D color high-precision imaging based on a manner of changing metal curvature according to claim 1, wherein the curvature adjusting mechanism comprises: the piezoelectric ceramic driver (6) and two piezoelectric ceramic stacks (7), wherein the two piezoelectric ceramic stacks (7) are arranged at two ends of the elastic sheet (5) and are fixed on the scanning angle adjusting mechanism; the piezoelectric ceramic driver (6) is respectively and electrically connected with the two piezoelectric ceramic stacks (7) and is used for driving the two piezoelectric ceramic stacks (7) to enable the two piezoelectric ceramic stacks (7) to generate displacement, and finally the elastic sheet (5) is extruded to enable the curvature of the elastic sheet (5) to change.
3. A 3D color high precision imaging apparatus according to claim 1 or 2, wherein said scanning angle adjusting mechanism comprises: the device comprises a fixing device (8) and a scanning motor (9), wherein a main shaft of the scanning motor (9) is fixed with the fixing device (8), and two piezoelectric ceramic stacks (7) are fixed on the fixing device (8).
4. A device for realizing 3D color high precision imaging based on a way of changing metal curvature according to claim 1, characterized in that a focusing lens (10) is arranged between the light entrance side of the beam splitting prism (1) and the light source (2).
5. A device for realizing 3D color high precision imaging based on a way of changing metal curvature according to claim 1, characterized in that the elastic sheet (5) is a metal sheet.
6. A device for realizing 3D color high precision imaging based on a way of changing metal curvature according to claim 1, characterized in that the light source (2) is a white light source.
7. The device for realizing 3D color high-precision imaging based on the way of changing metal curvature according to any one of claims 1-6, characterized in that the reflecting surface of the elastic sheet (5) is a cylindrical surface.
8. A method for realizing 3D color high-precision imaging based on a mode of changing metal curvature, characterized in that the method for realizing 3D color high-precision imaging based on a mode of changing metal curvature according to any one of claims 1 to 7 is adopted, comprising the steps of:
s100, the light source (2) is started, light emitted by the light source (2) enters the beam-splitting prism (1), then is transmitted to the slit (3) from the beam-splitting prism (1), and is emitted to the reflecting film of the elastic sheet (5) from the slit (3);
s200, the reflection film gathers the light irradiated on the reflection film on the surface of the object and forms light spots, the reflected light on the surface of the object is reflected back to the reflection film, and the reflected light on the reflection film is irradiated to the reflection surface of the beam-splitting prism (1) through the slit (3);
s300, a high-speed camera (4) collects reflected light on a beam splitting prism (1) and reads the light intensity, and then the point cloud data of the point is determined according to the light intensity of the position;
s400, firstly, changing the angles of the curvature adjusting mechanism and the elastic sheet (5) through the scanning angle adjusting mechanism, then changing the curvature of the elastic sheet (5) through the curvature adjusting mechanism so that light is converged at the next position on the surface of an object and forms light spots, and then repeating the action, and acquiring the light intensities of reflected light at different positions to determine point cloud data at different positions;
s500, reconstructing a 3D point cloud image of the object according to a plurality of groups of different point cloud data.
9. The method for realizing 3D color high-precision imaging based on the mode of changing metal curvature according to claim 8, wherein the light emitted by the light source (2) is focused by the focusing lens (10) before entering the beam splitting prism (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311401432.9A CN117555196A (en) | 2023-10-26 | 2023-10-26 | Device and method for realizing 3D color high-precision imaging based on mode of changing metal curvature |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311401432.9A CN117555196A (en) | 2023-10-26 | 2023-10-26 | Device and method for realizing 3D color high-precision imaging based on mode of changing metal curvature |
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| CN117555196A true CN117555196A (en) | 2024-02-13 |
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| CN202311401432.9A Pending CN117555196A (en) | 2023-10-26 | 2023-10-26 | Device and method for realizing 3D color high-precision imaging based on mode of changing metal curvature |
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| CN (1) | CN117555196A (en) |
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- 2023-10-26 CN CN202311401432.9A patent/CN117555196A/en active Pending
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