Hyperspectral data acquisition box for flue-cured tobacco leaves

Abstract

The utility model discloses a flue-cured tobacco leaf hyperspectral data acquisition box which comprises an acquisition box body, a camera mounting rod is arranged on the top wall of an inner cavity of the acquisition box body, a plurality of mounting holes with different heights are formed in the camera mounting rod, and a hyperspectral camera is detachably mounted on any mounting hole in the camera mounting rod; a light source assembly is arranged on the bottom wall of the inner cavity of the collection box body and comprises a closed light source mounting frame, a plurality of light sources are arranged at the bottom of the light source mounting frame, the light sources are distributed around the bottom of the light source mounting frame by a circle at intervals and define an irradiation area, and the camera mounting rod and the hyperspectral camera are located above the irradiation area; the six wall faces of the inner cavity of the collection box body and the surface of the light source installation frame are each coated with a light absorption material layer. The utility model has the advantages that the stability of the light source and the consistency of the shooting range in the data acquisition process of the hyperspectral camera are ensured, and the later image processing difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of non-destructive collection devices for hyperspectral data of tobacco leaves, in particular to a hyperspectral data collection box for flue-cured tobacco leaves. Background Art

[0002] Hyperspectral technology refers to the technology that uses hundreds of continuous spectral channels to obtain information such as radiation, scattering, and reflection of electromagnetic waves by the target object. It has the advantages of high resolution, continuous spectrum, and high accuracy. In recent years, it has been widely used in many research fields such as tobacco plant growth identification, tobacco disease and pest identification, tobacco leaf maturity determination, and tobacco leaf intrinsic quality estimation.

[0003] In conventional hyperspectral data acquisition, there are many influencing factors in the external environment, such as the instability of the light source and the external environment, which may have an adverse effect on the hyperspectral data acquisition process. At the same time, during the data acquisition process, due to the large size of tobacco leaves and the different placement of tobacco leaves each time, the acquisition range of the collected hyperspectral images is different, and the difference is large, which requires a lot of effort to process the spectral images in the later stage. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art and provide a hyperspectral data acquisition box for flue-cured tobacco leaves to ensure the stability of the light source and the consistency of the shooting range during the data acquisition process of the hyperspectral camera, thereby reducing the difficulty of later image processing.

[0005] The utility model is realized by the following technical solutions:

[0006] A flue-cured tobacco leaf hyperspectral data collection box comprises a collection box body, a camera mounting rod is arranged on the top wall of the inner cavity of the collection box body, a plurality of mounting holes of different heights are opened on the camera mounting rod, and a hyperspectral camera can be detachably mounted on any mounting hole on the camera mounting rod; a light source assembly is arranged on the bottom wall of the inner cavity of the collection box body, and the light source assembly comprises a closed light source mounting frame, the bottom of the light source mounting frame is supported on the bottom wall of the inner cavity of the collection box body by a plurality of brackets, a plurality of light sources are arranged on the bottom of the light source mounting frame, and the plurality of light sources are spaced around the bottom of the light source mounting frame and form an irradiation area, and the camera mounting rod and the hyperspectral camera are located above the irradiation area; six wall surfaces of the inner cavity of the collection box body and the surface of the light source mounting frame are coated with a layer of light-absorbing material.

[0007] As a preferred solution of the above-mentioned collection box, the light source installation frame is a closed rectangular frame.

[0008] As a preferred solution of the above-mentioned collection box, six light sources are arranged at the bottom of a single long side of the light source installation frame, and three light sources are arranged at the bottom of a single short side of the light source installation frame.

[0009] As a preferred solution of the above-mentioned collection box, a black background cloth is provided on the bottom wall of the inner cavity of the collection box body within the range corresponding to the irradiation area.

[0010] As a preferred solution of the above-mentioned collection box, the light source is a halogen lamp, and the top of the halogen lamp is installed on the bottom of the light source installation frame through a lamp holder.

[0011] As a preferred solution of the above-mentioned collection box, a box door is provided on one side of the collection box body, and the bottom of the collection box body is supported on the ground by four legs.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] The utility model provides a hyperspectral data collection box for flue-cured tobacco leaves. A closed light source installation frame is arranged on the bottom wall of the inner cavity of the collection box body. A plurality of light sources are spaced around the bottom of the light source installation frame and surround an irradiation area. The installation height of the hyperspectral camera above can be adjusted. The hyperspectral camera can be adjusted to a suitable height so that its shooting range is just within the irradiation area surrounded by the plurality of light sources, so that the hyperspectral image collection area is easy to define, which is beneficial to the later processing of the hyperspectral image. At the same time, a layer of light-absorbing material is coated on the six wall surfaces of the inner cavity of the collection box body and the surface of the light source installation frame, which can reduce reflected light, ensure the stability of the light source in the inner cavity of the collection box body, avoid the adverse effect of the unstable light source on the hyperspectral data collection process, and improve the stability of the hyperspectral image collection quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view of the inner cavity of the collection box of the utility model.

[0015] Figure 2 It is a top view of the inner cavity of the collection box of the utility model.

[0016] Figure 3 It is a plan view of the long side of the light source installation frame of the utility model.

[0017] Numbers in the figure: 1 acquisition box; 2 box door; 3 legs; 4 internal cavity; 5 camera mounting rod; 6 mounting hole; 7 light source mounting frame; 8 bracket; 9 light source; 10 irradiation area; 11 halogen lamp; 12 lamp holder; 13 handle. DETAILED DESCRIPTION

[0018] The following is a detailed description of an embodiment of the utility model. This embodiment is implemented on the premise of the technical solution of the utility model, and a detailed implementation method and a specific operation process are given, but the protection scope of the utility model is not limited to the following embodiment.

[0019] See also Figures 1 to 3 The present embodiment discloses a flue-cured tobacco leaf hyperspectral data collection box, comprising a collection box body 1, a box door 2 with a handle 13 is provided on one side of the collection box body 1, and the bottom of the collection box body 1 is supported on the ground by four legs 3. A camera mounting rod 5 is provided on the top wall of the internal cavity 4 of the collection box 1, and a plurality of mounting holes 6 of different heights are opened on the camera mounting rod 5, and the hyperspectral camera can be detachably mounted on any mounting hole 6 on the camera mounting rod 5; a light source assembly is provided on the bottom wall of the internal cavity 4 of the collection box 1, and the light source assembly includes a closed light source mounting frame 7, and the bottom of the light source mounting frame 7 is supported on the bottom wall of the internal cavity 4 of the collection box 1 by a plurality of brackets 8, and a plurality of light sources 9 are provided at the bottom of the light source mounting frame 7, and the plurality of light sources 9 are distributed around the bottom of the light source mounting frame 7 at intervals and form an irradiation area 10, and the camera mounting rod 5 and the hyperspectral camera are located above the irradiation area 10; the six wall surfaces of the internal cavity 4 of the collection box 1 and the surface of the light source mounting frame 7 are coated with a layer of light-absorbing material, which can reduce reflected light and ensure the stability of the light source 9 in the collection box 1.

[0020] In this embodiment, the light source mounting frame 7 is a closed rectangular frame, six light sources 9 are arranged at the bottom of a single long side of the light source mounting frame 7, and three light sources 9 are arranged at the bottom of a single short side of the light source mounting frame 7. The light source 9 is a halogen lamp 11, and the top of the halogen lamp 11 is mounted on the bottom of the light source mounting frame 7 through a lamp holder 12.

[0021] A black background cloth is provided on the bottom wall of the cavity 4 inside the collection box 1 within the range corresponding to the irradiation area 10. The black background cloth can absorb light of most wavelengths and has a high contrast with other colors, so as to highlight the subject photographed by the hyperspectral camera, that is, the tobacco leaves.

[0022] When in use, the experimenter opens the box door 2, spreads the black background cloth on the bottom wall of the cavity 4 inside the collection box and places it within the irradiation range, turns on the light source assembly, and installs the hyperspectral camera on the mounting hole 6 at a suitable height, so that the hyperspectral camera's shooting range is exactly within the irradiation area 10 surrounded by multiple light sources 9. Then place the flue-cured tobacco leaf sample flat on the black background cloth, close the box door 2, and the hyperspectral camera can collect the hyperspectral data of the flue-cured tobacco leaves.

[0023] The flue-cured tobacco leaf hyperspectral data collection box provided in this embodiment completes the hyperspectral data collection of the flue-cured tobacco leaf in the collection box 1, realizes the control of the collection environment conditions, ensures the stability of the light source 9, avoids the interference of the external environment and the unstable light source 9 on the collection process, reduces the noise of the collected hyperspectral data, and improves the accuracy and reliability of the data. The shooting range of the hyperspectral camera is exactly the range of the irradiation area 10, which makes it easy to define the hyperspectral image collection area, facilitates the later hyperspectral image preprocessing, and reduces the difficulty of later image data analysis.

[0024] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A flue-cured tobacco leaf hyperspectral data collection box, comprising a collection box body, characterized in that: A camera mounting rod is provided on the top wall of the internal cavity of the acquisition box, and a plurality of mounting holes of different heights are opened on the camera mounting rod, and the hyperspectral camera can be detachably mounted on any mounting hole on the camera mounting rod; a light source assembly is provided on the bottom wall of the internal cavity of the acquisition box, and the light source assembly includes a closed light source mounting frame, and the bottom of the light source mounting frame is supported on the bottom wall of the internal cavity of the acquisition box by a plurality of brackets, and a plurality of light sources are provided at the bottom of the light source mounting frame, and the plurality of light sources are spaced around the bottom of the light source mounting frame and form an irradiation area, and the camera mounting rod and the hyperspectral camera are located above the irradiation area; the six wall surfaces of the internal cavity of the acquisition box and the surface of the light source mounting frame are coated with a layer of light-absorbing material.

2. The hyperspectral data collection box for flue-cured tobacco leaves according to claim 1, characterized in that: The light source installation frame is a closed rectangular frame.

3. The hyperspectral data collection box for flue-cured tobacco leaves according to claim 2, characterized in that: Six light sources are arranged at the bottom of a single long side of the light source installation frame, and three light sources are arranged at the bottom of a single short side of the light source installation frame.

4. The hyperspectral data collection box for flue-cured tobacco leaves according to claim 1, characterized in that: A black background cloth is provided on the bottom wall of the inner cavity of the collection box body within the range corresponding to the irradiation area.

5. The hyperspectral data collection box for flue-cured tobacco leaves according to claim 1, characterized in that: The light source is a halogen lamp, and the top of the halogen lamp is installed at the bottom of the light source installation frame through a lamp holder.

6. The hyperspectral data collection box for flue-cured tobacco leaves according to claim 1, characterized in that: A box door is arranged on one side of the collection box body, and the bottom of the collection box body is supported on the ground by four legs.

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