CN215835442U - Laser watermark projection device and camera equipment - Google Patents
Laser watermark projection device and camera equipment Download PDFInfo
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- CN215835442U CN215835442U CN202121559336.3U CN202121559336U CN215835442U CN 215835442 U CN215835442 U CN 215835442U CN 202121559336 U CN202121559336 U CN 202121559336U CN 215835442 U CN215835442 U CN 215835442U
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Abstract
The embodiment of the specification provides a laser watermark projection device and an image pickup device. Wherein, laser watermark projection arrangement includes: the laser generator is in communication connection with the laser dynamic adjuster; the laser generator emits laser to a monitoring area of the camera so as to form a laser watermark in the monitoring area; the laser dynamic adjuster dynamically adjusts the laser emitted by the laser generator so that the laser watermark dynamically changes in the monitored area.
Description
Technical Field
The embodiment of the specification relates to the technical field of laser, in particular to a laser watermark projecting device and an image pickup device.
Background
The laser is a device capable of emitting laser, the laser is a photon beam generated by induction, photon optical characteristics in the photon beam of the laser are highly consistent, and compared with a common light source, the laser has better monochromaticity and directivity and higher brightness. Based on this characteristic, lasers are widely used, such as laser marking, laser welding, laser cutting, laser radar, and the like.
Laser marking is a marking method in which a workpiece is irradiated locally with high-energy-density laser light to vaporize a surface layer material or to undergo a chemical reaction of color change, thereby leaving a permanent mark. The current laser marking technology is directed to the formed objects, such as machines, pictures, etc. However, such post-formed laser marks can be damaged or tampered with.
SUMMERY OF THE UTILITY MODEL
In view of the foregoing, embodiments of the present specification provide a laser watermark projecting device and an image pickup apparatus. According to the technical scheme provided by the embodiment of the specification, the dynamically-changed laser watermark is added in the monitoring area of the camera, so that each frame of the image data shot by the camera carries the laser watermark, the image data is prevented from being tampered, and the authenticity of the image data is ensured.
According to an aspect of embodiments herein, there is provided a laser watermark projecting apparatus including: the laser generator is in communication connection with the laser dynamic regulator; the laser generator emits laser to a monitoring area of the camera so as to form a laser watermark in the monitoring area; the laser dynamic adjuster dynamically adjusts the laser emitted by the laser generator so that the laser watermark dynamically changes in the monitored area.
According to another aspect of the embodiments of the present specification, there is also provided an image pickup apparatus including a camera and the laser watermark projecting device described in any one of the above.
Drawings
A further understanding of the nature and advantages of the contents of the embodiments of the present specification may be realized by reference to the following drawings.
Fig. 1 is a schematic diagram illustrating an example of a laser watermark projecting device configured in a camera head projecting a laser watermark according to an embodiment of the present specification.
Fig. 2 shows a block diagram of one example of an image pickup apparatus according to an embodiment of the present specification.
Fig. 3 shows a block diagram of an example of a laser watermark projecting device according to an embodiment of the present description.
Fig. 4 shows a schematic diagram of another example of a laser watermark projecting device according to an embodiment of the present description.
Fig. 5 shows a schematic diagram of another example of a laser watermark projecting device according to an embodiment of the present description.
Detailed Description
The subject matter described herein will be discussed with reference to example embodiments.
The embodiment of the specification provides a laser watermark projection device and an image pickup device. The laser watermark projection device that this specification embodiment provided includes: the laser generator is in communication connection with the laser dynamic adjuster; the laser generator is used for emitting laser to a monitoring area of the camera so as to form a laser watermark in the monitoring area; the laser dynamic adjuster is used for dynamically adjusting the laser emitted by the laser generator so as to enable the laser watermark to dynamically change in the monitored area. According to the technical scheme provided by the embodiment of the specification, the dynamically-changed laser watermark is added in the monitoring area of the camera, so that each frame of the image data shot by the camera carries the laser watermark, the image data is prevented from being tampered, and the authenticity of the image data is ensured.
The laser watermark projecting device and the image pickup apparatus will be described in detail below with reference to the accompanying drawings.
The laser watermark projection apparatus 100 in the embodiment of the present description may be used in cooperation with the camera 200, the camera 200 may be used to collect image data in a monitoring area, and the laser watermark projection apparatus 100 may be used to project a laser watermark in the monitoring area of the camera 200.
In one example, the laser watermark projection apparatus 100 and the camera 200 may belong to two independent devices, respectively, and the laser watermark projection apparatus 100 may be in communication connection with the camera 200, or may not be in communication connection with the camera 200.
When the laser watermark projection apparatus 100 is in communication connection with the camera 200, the camera 200 may send the monitoring area information to the laser watermark projection apparatus 100, and the laser watermark projection apparatus 100 may emit laser according to the received monitoring area information, so as to form a laser watermark in the monitoring area.
When the laser watermark projection apparatus 100 is not in communication connection with the camera 200, the laser watermark projection apparatus 100 may set a projection area of laser in a customized manner, where the set projection area is in a monitoring area of the camera 200. The projection area of the laser watermark projecting apparatus 100 may be set according to the monitoring area of the camera 200, and after the projection area is set, the laser watermark projecting apparatus 100 may emit laser light according to the projection area to form a laser watermark in the projection area.
In another example, the laser watermark projecting device 100 may be configured as one component in the camera 200, in which case the laser watermark projecting device 100 and the camera 200 may exist as one device. The laser watermark projection apparatus 100 may be in communication connection with other components in the camera 200, so that the laser watermark projection apparatus 100 may acquire information such as a monitoring area of the camera 200, and then emit laser according to the information of the monitoring area to form a laser watermark in the projection area.
Fig. 1 shows a schematic diagram of an example of a laser watermark projecting apparatus 100 configured in a camera 200 projecting a laser watermark according to an embodiment of the present specification. As shown in fig. 1, the laser watermark projecting device 100 is configured in the camera 200, and the laser watermark projecting device 100 emits laser light to form a laser watermark in the monitored area of the camera 200.
In another example, the laser watermark projecting device 100 and the camera 200 may be integrated in one camera device 30. Fig. 2 shows a block diagram of an example of the image pickup apparatus 30 according to an embodiment of the present specification, and as shown in fig. 2, the image pickup apparatus 30 may include a laser watermark projecting device 100 and a camera 200. In the image pickup apparatus 30, the laser watermark projecting device 100 may be communicatively connected to the camera 200.
Fig. 3 shows a block diagram of an example of a laser watermark projecting device 100 according to an embodiment of the present description.
As shown in fig. 3, the laser watermark projecting apparatus 100 includes a laser generator 110 and a laser dynamic adjuster 120, and the laser generator 110 may be communicatively connected to the laser dynamic adjuster 120.
In this embodiment, the laser generator 110 may emit laser, the laser emitted by the laser generator 110 is projected into a monitoring area of the camera 200, the projected laser may be displayed in the monitoring area of a real scene, and the displayed laser is formed as a laser watermark, so as to form a laser watermark in the monitoring area. The laser watermark may be collected by the camera 200 as a part of the real environment, so that each frame of image collected by the camera 200 includes the laser watermark. The laser watermark can be used as a watermark in each frame image to avoid the frame image being tampered.
In the embodiments of the present description, the laser used to form the laser watermark is part of the real environment captured by the camera 200. In a real environment, the laser light is integrated with the surrounding environment and interacts with the surrounding environment. For example, air, light, etc. in the surrounding environment may affect the laser in the environment, and when the laser watermark appears in the image, the periphery of the laser watermark forms tiny light, and the tiny light formed is random.
When the camera 200 is in a dark environment, for example, at night, the camera 200 may collect image data by emitting infrared rays. In this case, the infrared ray interacts with the laser, the laser affects the diffuse reflection of the infrared ray, the infrared ray affects the luminescence of the laser, and minute light can be formed around the laser watermark, which is also captured by the camera 200 and displayed in the image frame.
In the embodiment of the present specification, the laser watermark is collected into the image frame as a part of the real environment, and the tiny light formed by the interaction between the laser and the surrounding environment can be presented in the image frame, which makes the laser watermark in the image frame non-reproducible, so that the image frame collected by the camera 200 can be prevented from being tampered.
In an embodiment of the present disclosure, the laser dynamic adjuster 120 may be used to dynamically adjust the laser light emitted by the laser generator 110. The laser dynamic adjuster 120 may adjust an emission angle of the laser, a brightness of the laser, and the like.
The adjustment of the emission angle of the laser may include the dynamic laser adjuster 120 controlling the emission angle of the laser generator 110. The emission angles of the lasers are different, resulting in different positions of the formed laser watermark in the monitored area.
The adjusting of the brightness of the laser may include the laser dynamic adjuster 120 adjusting the power supply of the laser generator 110. The different power supplies of the laser generator 110 result in different brightness levels of the laser light emitted by the laser generator 110, and thus different brightness levels of the laser watermark projected into the monitored area.
In one example of the embodiments herein, the laser dynamic adjuster 120 may include a laser projection angle adjustment unit 121, and the laser projection angle adjustment unit 121 may be communicatively connected with the laser generator 110. As shown in fig. 4, fig. 4 is a schematic diagram illustrating another example of a laser watermark projecting apparatus according to an embodiment of the present specification.
The laser projection angle adjusting unit 121 may be configured to dynamically adjust a laser emission angle of the laser generator 110, where the laser emission angle is different, and then the position of the laser watermark formed by the laser in the monitoring area is different. The position of the laser watermark changes along with the change of the projection angle of the laser, and the position of the laser watermark and the projection angle of the laser can change simultaneously.
For example, if the laser projection angle adjustment unit 121 adjusts the laser emission angle of the laser generator 110 to gradually increase with respect to a downward vertical plane (i.e., the laser emitted by the laser generator 110 moves from bottom to top), the position of the laser watermark gradually moves away from the laser generator 110 when the laser watermark is projected onto a horizontal plane in the monitored area; when the laser watermark is projected on the vertical plane in the monitoring area, the position of the laser watermark gradually moves from bottom to top.
In one example, the laser generator 110 includes a body and a laser emission port, which constitute one complete laser generator 110. The body of the laser generator 110 is used for power supply, signal conversion, laser generation, and the like, and the laser generated by the body of the laser generator 110 is emitted to the outside through the laser emission port. The laser emitting port is rotatably connected with the body of the laser generator 110, and the laser emitting port can adjust the emitting angle of laser by rotating through a rotatable connection mode. In this example, the laser projection angle adjustment unit 121 may be communicatively connected with the laser transmitter to control the orientation of the laser transmission port, thereby controlling the transmission angle of the laser.
Further, in one example, the body of the laser generator 110 and the laser emission port may be connected together by a rotation connection portion, and the laser emission port may be rotated along with the rotation of the rotation connection portion, so that the orientation of the laser emission port may be controlled by controlling the rotation connection portion. Furthermore, the rotational connection can be controlled. In this example, the laser projection angle adjustment unit 121 may be communicatively connected to the rotation connection portion, and control the orientation of the laser emission port by controlling the rotation of the rotation connection portion, thereby controlling the emission angle of the laser.
In another example, the laser generator 110 can have a base for securing a body of the laser generator 110, and the body of the laser generator 110 can be rotatably coupled to the base, for example, the base can be a rotating table. In this example, the laser projection angle adjustment unit 121 may be communicatively connected to the base, and the laser projection angle adjustment unit 121 controls the orientation of the body of the laser generator 110 by controlling the rotation of the base, thereby controlling the angle at which the laser generator 110 emits laser light.
In one example, the adjustment manner of the laser projection angle adjustment unit 121 may include: randomly and/or according to a planned route.
The random adjustment mode is limited to random adjustment in the monitoring area, and the laser watermark is kept moving in the monitoring area. When the laser projection angle adjusting unit 121 randomly adjusts, the moving route of the laser watermark in the monitored area is also random. When the laser projection angle adjustment unit 121 adjusts the laser generator 110 in a random adjustment manner, the laser projection angle adjustment unit 121 may record the adjusted route in real time, so that the authenticity of the image data may be verified through the recorded adjusted route in the following.
Specifically, the positions of the laser watermarks in the frames of images included in the image data to be verified may be combined to form a movement track of the laser watermarks, and then the movement track is compared with the recorded adjustment route, and when the comparison is inconsistent, for example, the movement track is interrupted, and the movement track is inconsistent with the recorded adjustment route, it may be determined that the image data is tampered.
In the manner of adjustment according to the planned route, the planned route can be customized, and the planned route can ensure that the laser watermark is kept in the monitoring area. For example, the planned route is a circle in the monitoring area, and when the laser projection angle adjustment unit 121 adjusts the laser emission angle according to the planned route, the laser watermark dynamically moves according to the path of the circle.
In one example, the adjustment of the laser projection angle adjustment unit 121 may have continuity, and when the adjustment of the laser projection angle adjustment unit 121 is continuous, the laser watermark in the monitored area also keeps continuously moving.
In this example, the laser generator 110 continuously keeps emitting laser light during shooting by the camera, so that the laser watermark is kept in the monitored area at all times. Meanwhile, the laser projection angle adjusting unit 121 continuously adjusts the laser emission angle of the laser generator 110 so that the laser watermark in the monitored area is also continuously moved. Therefore, the positions of the laser watermarks in the continuous image frames shot by the camera are different, and the positions of the laser watermarks in the continuous image frames are kept continuous, so that whether the image data are falsified or not is verified through the continuous laser watermark positions, and the falsified image data are prevented from being used.
In one example of an embodiment herein, the laser dynamic adjuster 120 may include a power supply adjustment unit 122, and the power supply adjustment unit 122 may be communicatively coupled to the laser generator 110. For example, as shown in fig. 4.
The power supply adjustment unit 122 may be used to supply power to the laser generator 110 and may also be used to dynamically adjust the power supply of the laser generator 110. The power supply adjustment unit 122 adjusts the power supply, and the power supply received by the laser generator 110 is adjusted accordingly. The power supplied to the laser generator 110 may affect the brightness of the laser light generated by the laser generator 110. The larger the power supply is, the brighter the emitted laser is; the smaller the power supply, the brighter and darker the laser light emitted.
In this example, the adjustment of the supply power adjusting unit 122 may have a continuity, i.e. the supply power adjusting unit 122 may continuously adjust the supply power, e.g. continuously increase the supply power and continuously decrease the supply power. The adjustment of the power supply adjustment unit 122 has continuity, and accordingly, the change in the brightness of the laser watermark also has continuity. For example, when the power supply is continuously increased, the brightness of the laser watermark is continuously increased; when the power supply is continuously reduced, the brightness of the laser watermark is continuously reduced.
Through the continuous adjustment of the power supply adjusting unit 122, the brightness of the laser watermark also changes continuously, so that the brightness of the laser watermark in each continuous image frame captured by the camera is different, and the change of the brightness of the laser watermark in each continuous image frame is kept continuous, for example, the brightness is gradually increased, or the brightness is gradually increased. Therefore, whether the image data is falsified or not can be verified conveniently through the brightness of the continuous laser watermarks, and the falsified image data is prevented from being used.
In one example of the embodiments of the present specification, the laser dynamic adjuster 120 may include both the laser projection angle adjustment unit 121 and the power supply power adjustment unit 122, as shown in fig. 4.
In this example, during the process of emitting laser light by the laser generator 110, the laser projection angle adjustment unit 121 and the power supply power adjustment unit 122 simultaneously adjust the laser generator 110, so that the angle of the laser light emitted by the laser generator 110 changes, and the brightness of the emitted laser light changes, which in turn causes the position and brightness of the laser watermark in the monitoring area to change.
Further, in another example, the laser dynamic adjuster 120 may include a laser projection angle adjusting unit 121 or a power supply adjusting unit 122.
In one example of an embodiment of the present specification, the laser watermark projecting device 100 may further include a watermark pattern template 130. As shown in fig. 5, fig. 5 is a schematic view showing another example of a laser watermark projecting apparatus according to an embodiment of the present specification.
In this example, the pattern on the watermark pattern template 130 may be customized, for example, the pattern may be logo, text, etc. The watermark pattern template 130 may be a hollow structure, and the hollow part is formed as a watermark pattern.
The watermark pattern template 130 may be positioned at a location where the laser light generator 110 emits laser light such that the laser watermark in the monitored area appears as a pattern on the watermark pattern template. When the laser generated by the laser generator 110 reaches the watermark pattern template 130, a part of the laser is shielded by the non-hollow part of the watermark pattern template 130, and the part of the laser cannot be projected into the monitoring area. The other part of the laser can penetrate through the hollow part of the watermark pattern template 130 and project into the monitoring area to form the laser watermark. The pattern of the laser watermark formed by the laser penetrating the hollowed-out portion of the watermark pattern template 130 is the pattern in the watermark pattern template 130.
In one example, the watermark pattern template 130 may be disposed proximate to the laser emission port of the laser generator 110. In another example, the watermark pattern template 130 may be disposed at a distance from the laser emission port of the laser generator 110.
Alternative embodiments of the present specification are described in detail above with reference to the drawings.
Claims (10)
1. A laser watermark projection apparatus, comprising: the laser generator is in communication connection with the laser dynamic regulator;
the laser generator emits laser to a monitoring area of the camera so as to form a laser watermark in the monitoring area;
the laser dynamic adjuster dynamically adjusts the laser emitted by the laser generator so that the laser watermark dynamically changes in the monitored area.
2. The laser watermark projecting apparatus according to claim 1, wherein said laser dynamic adjuster comprises a laser projection angle adjusting unit, said laser projection angle adjusting unit being communicatively connected to said laser generator;
and the laser projection angle adjusting unit dynamically adjusts the laser emission angle of the laser generator so as to dynamically change the position of the laser watermark in the monitoring area.
3. A laser watermark projecting apparatus according to claim 2, wherein the laser generator comprises a body and a laser emitting port, the body being rotatably connected to the laser emitting port,
the laser projection angle adjusting unit is in communication connection with the laser emitting port.
4. The laser watermark projecting apparatus of claim 3, wherein the body is connected to the laser emitting port through a rotation connection portion, and the laser projection angle adjusting unit is in communication connection with the rotation connection portion.
5. A laser watermark projection apparatus as claimed in claim 2, wherein the laser generator comprises a body and a base, the body being rotatably connected to the base, the laser projection angle adjustment unit being in communication with the base.
6. The laser watermark projecting apparatus of claim 1, wherein said laser dynamic adjuster comprises a power supply adjustment unit, said power supply adjustment unit being communicatively connected to said laser generator;
the power supply power adjusting unit dynamically adjusts the power supply power of the laser generator so as to enable the brightness of laser light emitted by the laser generator to be dynamically changed.
7. The laser watermark projecting apparatus according to claim 1, wherein said laser dynamic adjuster includes a laser projection angle adjusting unit and a power supply power adjusting unit.
8. The laser watermark projecting device of claim 1, wherein said laser watermark projecting device further comprises a watermark pattern template, said watermark pattern template being disposed at a position where said laser generator emits laser light.
9. The laser watermark projecting device of claim 1, wherein said laser watermark projecting device is configured in said camera.
10. An image pickup apparatus comprising a camera and the laser watermark projecting device of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121559336.3U CN215835442U (en) | 2021-07-09 | 2021-07-09 | Laser watermark projection device and camera equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121559336.3U CN215835442U (en) | 2021-07-09 | 2021-07-09 | Laser watermark projection device and camera equipment |
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| Publication Number | Publication Date |
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| CN215835442U true CN215835442U (en) | 2022-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121559336.3U Active CN215835442U (en) | 2021-07-09 | 2021-07-09 | Laser watermark projection device and camera equipment |
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| CN (1) | CN215835442U (en) |
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- 2021-07-09 CN CN202121559336.3U patent/CN215835442U/en active Active
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