Measuring equipment for underwater RGB attenuation

Abstract

The utility model relates to the field of underwater image processing, in particular to measuring equipment for underwater RGB attenuation, which comprises a first sealed cabin plug, a first three-color laser sealed cabin, a second three-color laser sealed cabin, an RGB three-color laser, a first transparent window, a protective cover, a second transparent window, an illumination measuring device and a second sealed cabin plug. The installation opening and the first transparent window are provided with first O-shaped sealing rings, the second sealing cabin plug is fixedly connected to a second sealing flange, the second sealing flange is installed on a second three-color laser sealing cabin body, the second three-color laser sealing cabin body is fixedly connected with an illumination device support, and the illumination device support is fixedly connected with an illumination device. The second transparent window is installed on the second three-color laser sealed cabin, and a second O-shaped sealing ring is arranged between the second transparent window and the second three-color laser sealed cabin. According to the utility model, the problems that the effect in turbid water is not ideal and physical suspended matters cannot be processed by changing the value of an RGB channel when an underwater image is enhanced are solved.

Description

Technical Field

[0001] The utility model relates to the field of underwater image processing, in particular to a measuring device for underwater RGB attenuation. Background Art

[0002] In the field of underwater image processing, most tasks are accomplished by suppressing or enhancing the RGB channel values ​​of the image itself. This solution has certain effects, but cannot meet the needs of a considerable number of application scenarios. The present invention detects and calculates the laser RGB attenuation value and attenuation ratio, and applies the content of the marine optics field to enhance the image.

[0003] Water contains a variety of minerals, which causes the unevenness of water, making the energy attenuation of light in water more serious than in the atmosphere. At present, for a certain wavelength, its attenuation coefficient is considered to be a constant. For a wavelength of 532nm, its value is 0.04-0.05 / m. Studies have found that the attenuation of lasers in water is closely related to the minerals contained in the water. This is because the attenuation of light in impure water mainly comes from two different processes: absorption and scattering. Absorption is the process in which light energy is converted into other forms of energy when it encounters particles with absorption during transmission; scattering is the process in which light collides with other particles during transmission and diverges, causing the light energy in the transmission direction to continue to decrease. This causes the attenuation of light in water to change dramatically. At this time, the attenuation coefficient of lasers in impure water is no longer a constant, but varies with the different components in the water.

[0004] At present, underwater image enhancement is mainly performed by changing the RGB channel values ​​of the captured underwater image, but this method has great limitations. The effect is not ideal in turbid water, and physical suspended matter cannot be processed by changing the RGB channel values. There is no method that uses underwater RGB laser attenuation technology to assist underwater image enhancement.

[0005] In order to solve the above technical problems, the utility model designs a measuring device for underwater RGB attenuation. Utility Model Content

[0006] The utility model provides a measuring device for underwater RGB attenuation, which aims to solve the problem that when underwater image enhancement is performed, the effect in turbid water is not ideal and physical suspended matter cannot be processed by changing the value of RGB channels. The technical solution is as follows:

[0007] A device for measuring underwater RGB attenuation: comprising a first sealed cabin plug, a first three-color laser sealed cabin body, a second three-color laser sealed cabin body, an RGB three-color laser, a first transparent window, a protective cover, a second transparent window, an illumination measuring device, and a second sealed cabin plug;

[0008] The first sealed cabin plug is fixedly connected to the first sealing flange, and the first sealing flange is connected to the first three-color laser sealed cabin body by fixing bolts. The two ends of the protective cover are respectively connected to the first three-color laser sealed cabin body and the second three-color laser sealed cabin body. The first three-color laser sealed cabin body is provided with an installation port, and the RGB three-color laser is clamped in the first three-color laser sealed cabin body. The first transparent window is installed on the installation port, and the installation port and the first transparent window are provided with a first O-ring. The second sealed cabin plug is fixedly connected to the second sealing flange, and the second sealing flange is installed on the second three-color laser sealed cabin body. The second three-color laser sealed cabin body is fixedly connected to an illumination device bracket, and the illumination device bracket is detachably connected to an illumination measuring device. The second transparent window is installed on the second three-color laser sealed cabin body, and a second O-ring is provided between the second transparent window and the second three-color laser sealed cabin body.

[0009] Based on the above technical solution, a third O-ring is arranged between the first sealing flange and the first three-color laser sealing chamber.

[0010] Based on the above technical solution, a fourth O-ring is arranged between the second sealing flange and the second three-color laser sealing chamber.

[0011] Preferably, a circular hole is provided on the protective cover.

[0012] Based on the above technical solution, the first three-color laser sealed cabin includes a first connecting cabin and a second connecting cabin, the first connecting cabin and the second connecting cabin are snap-connected, and a special-shaped hole is opened at the end of the first connecting cabin, and the shape of the special-shaped hole is consistent with the shape of the RGB three-color laser.

[0013] Preferably, a movable cavity is provided in the first connecting cabin, and the length of the movable cavity is greater than the length of the RGB three-color laser.

[0014] Beneficial Effects

[0015] Compared with the prior art, the beneficial effects of the utility model are: on the one hand, the attenuation value and attenuation coefficient of the RGB three-color laser in the current water area are used as reference values ​​to provide water environment parameters to the underwater camera equipment outside the system, and the real-time underwater image is enhanced through the algorithm. The device is easy to install and the numerical feedback is accurate. On the one hand, the distance between the RGB three-color laser and the illumination measurement device is adjustable, which is suitable for measuring different distances. On the other hand, multiple O-rings are set to seal the device to ensure its stable operation underwater. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only one embodiment of the utility model. For ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0017] Figure 1 : A schematic diagram of the structure of the utility model;

[0018] Figure 2 : A side view of the utility model;

[0019] Figure 3 : Figure 2 Cross-sectional view of the middle BB;

[0020] Figure 4 : A schematic diagram of the structure of the first three-color laser sealed cabin of the utility model;

[0021] Figure 5 : A schematic diagram of the structure of the first connecting cabin of the utility model;

[0022] Figure 6 : A left view of the first connecting cabin of the present invention. DETAILED DESCRIPTION

[0023] The utility model is further described below with reference to the accompanying drawings and examples:

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] like Figures 1 to 3 As shown, a device for measuring underwater RGB attenuation is characterized by comprising a first sealed cabin plug 1, a first three-color laser sealed cabin body 51, a second three-color laser sealed cabin body 52, an RGB three-color laser 6, a first transparent window 8, a protective cover 9, a second transparent window 10, an illumination measuring device 12, and a second sealed cabin plug 16;

[0028] The first sealed cabin plug 1 is fixedly connected to the first sealing flange 31, and the first sealing flange 31 is connected to the first three-color laser sealed cabin body 51 through the fixing bolts 2. The two ends of the protective cover 9 are respectively connected to the first three-color laser sealed cabin body 51 and the second three-color laser sealed cabin body 52. ​​The first three-color laser sealed cabin body 51 is provided with a mounting port, and the RGB three-color laser 6 is clamped in the first three-color laser sealed cabin body 51. The first transparent window 8 is installed on the mounting port, and the mounting port and the first transparent window 8 are provided with a first O-ring 7. The second sealed cabin plug 16 is fixedly connected to the second sealing flange 32, and the second sealing flange 32 is installed on the second three-color laser sealed cabin body 52. ​​The second three-color laser sealed cabin body 52 is fixedly connected to the illumination device bracket 13, and the illumination device bracket 13 is detachably connected to the illumination measuring device 12. The second transparent window 10 is installed on the second three-color laser sealed cabin body 52, and a second O-ring 11 is provided between the second transparent window 10 and the second three-color laser sealed cabin body 52.

[0029] A third O-ring 4 is disposed between the first sealing flange 31 and the first three-color laser sealing chamber 51 .

[0030] A fourth O-ring 14 is disposed between the second sealing flange 32 and the second three-color laser sealing chamber 52 .

[0031] The first O-ring 7 , the second O-ring 11 , the third O-ring 4 , and the fourth O-ring 14 can all solve the sealing problem of the RGB three-color laser 6 and the illumination measuring device 12 .

[0032] The protective cover 9 is provided with a circular hole.

[0033] like Figures 4 to 6As shown, the first three-color laser sealed chamber 51 includes a first connection chamber 511 and a second connection chamber 512, the first connection chamber 511 and the second connection chamber 512 are clamped, and a special-shaped hole 513 is formed at the end of the first connection chamber 511, and the shape of the special-shaped hole 513 is consistent with the shape of the RGB three-color laser 6. The RGB three-color laser 6 can be clamped on the installation port.

[0034] A movable cavity 514 is provided in the first connection cabin 511, and the length of the movable cavity 514 is greater than the length of the RGB three-color laser 6. The RGB three-color laser 6 can move left and right in the movable cavity 514 to fine-tune the distance between the RGB three-color laser 6 and the illumination measuring device 12.

[0035] The whole set of equipment can be used underwater, and the usable depth is 100 meters underwater. The laser emitted by the RGB three-color laser 6 is composed of red, green and blue lasers, with a power of 1mW. The laser of the RGB three-color laser 6 is emitted from the first transparent window 8, and hits the underwater illumination measuring device 12 through the protective cover 9. The illumination measuring device 12 can calculate the illumination reading and feed it back to the system through the cable to provide a basis for image processing. The function of the protective cover 9 is to prevent the equipment from being immersed in seawater for a long time. The transparent glass produces biological attachment. The specific implementation is that when the equipment leaves the factory, the illumination value of the RGB three-color laser is measured in the air, and this value is used as the reference value; when working in water, the difference and ratio between the illumination value measured by the equipment and the reference value are used as the attenuation value and attenuation ratio.

[0036] When the distance between the RGB three-color laser 6 and the illumination measuring device 12 needs to be changed, the first three-color laser sealed cabin 51 and the second three-color laser sealed cabin 52 can be disassembled and protective covers of different lengths can be replaced.

[0037] The present invention is described above by way of examples, but the present invention is not limited to the above specific embodiments, and any changes or modifications based on the present invention belong to the scope of protection required by the present invention.

Claims

1. A device for measuring underwater RGB attenuation, characterized in that: It comprises a first sealed cabin plug (1), a first three-color laser sealed cabin body (51), a second three-color laser sealed cabin body (52), an RGB three-color laser (6), a first transparent window (8), a protective cover (9), a second transparent window (10), an illumination measuring device (12) and a second sealed cabin plug (16); The first sealed cabin plug (1) is fixedly connected to the first sealed flange (31); the first sealed flange (31) is connected to the first three-color laser sealed cabin body (51) via fixing bolts (2); the two ends of the protective cover (9) are detachably connected to the first three-color laser sealed cabin body (51) and the second three-color laser sealed cabin body (52); the first three-color laser sealed cabin body (51) is provided with a mounting opening; the RGB three-color laser (6) is snap-fitted into the first three-color laser sealed cabin body (51); the first transparent window (8) is mounted on the mounting opening; the mounting opening and the first transparent window (8) are provided with A first O-ring (7) is disposed, the second sealed cabin plug (16) is fixedly connected to the second sealing flange (32), the second sealing flange (32) is mounted on the second three-color laser sealed cabin body (52), an illumination device bracket (13) is fixedly connected to the second three-color laser sealed cabin body (52), an illumination measuring device (12) is detachably connected to the illumination device bracket (13), the second transparent window (10) is mounted on the second three-color laser sealed cabin body (52), and a second O-ring (11) is disposed between the second transparent window (10) and the second three-color laser sealed cabin body (52).

2. The underwater RGB attenuation measuring device according to claim 1, characterized in that: A third O-shaped sealing ring (4) is provided between the first sealing flange (31) and the first three-color laser sealing chamber (51).

3. The underwater RGB attenuation measuring device according to claim 1, characterized in that: A fourth O-ring (14) is provided between the second sealing flange (32) and the second three-color laser sealing chamber (52).

4. The device for measuring underwater RGB attenuation according to claim 1, characterized in that: The protective cover (9) is provided with a circular hole.

5. The device for measuring underwater RGB attenuation according to claim 1, characterized in that: The first three-color laser sealed cabin (51) comprises a first connecting cabin (511) and a second connecting cabin (512); the first connecting cabin (511) and the second connecting cabin (512) are snap-connected; an irregularly shaped hole (513) is provided at the end of the first connecting cabin (511); the shape of the irregularly shaped hole (513) is consistent with the shape of the RGB three-color laser (6).

6. The device for measuring underwater RGB attenuation according to claim 5, characterized in that: A movable cavity (514) is provided in the first connecting cabin (511), and the length of the movable cavity (514) is greater than the length of the RGB three-color laser (6).

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